[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-azure/5.15.0-1064.73 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-azure' to 'verification-done-jammy- linux-azure'. If the problem still exists, change the tag 'verification- needed-jammy-linux-azure' to 'verification-failed-jammy-linux-azure'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-azure-v2 verification-needed-jammy-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-xilinx- zynqmp/5.4.0-1042.46 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-xilinx-zynqmp' to 'verification-done-focal-linux-xilinx-zynqmp'. If the problem still exists, change the tag 'verification-needed-focal-linux-xilinx-zynqmp' to 'verification-failed-focal-linux-xilinx-zynqmp'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-xilinx-zynqmp-v2 verification-needed-focal-linux-xilinx-zynqmp -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
** Tags removed: verification-needed-focal-linux-iot verification-needed-focal-linux-kvm verification-needed-focal-linux-oracle verification-needed-focal-linux-raspi verification-needed-jammy-linux ** Tags added: verification-done-focal-linux-iot verification-done-focal-linux-kvm verification-done-focal-linux-oracle verification-done-focal-linux-raspi verification-done-jammy-linux ** Tags removed: verification-needed-focal-linux-bluefield verification-needed-focal-linux-fips verification-needed-focal-linux-gcp verification-needed-focal-linux-gkeop verification-needed-focal-linux-ibm ** Tags added: verification-done-focal-linux-bluefield verification-done-focal-linux-fips verification-done-focal-linux-gcp verification-done-focal-linux-gkeop verification-done-focal-linux-ibm ** Tags removed: verification-needed-bionic-linux-hwe-5.4 verification-needed-focal-linux-aws verification-needed-focal-linux-azure ** Tags added: verification-done-bionic-linux-hwe-5.4 verification-done-focal-linux-aws verification-done-focal-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-iot/5.4.0-1035.36 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-iot' to 'verification-done-focal- linux-iot'. If the problem still exists, change the tag 'verification- needed-focal-linux-iot' to 'verification-failed-focal-linux-iot'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-iot-v2 verification-needed-focal-linux-iot -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-bluefield/5.4.0-1083.90 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-bluefield' to 'verification-done- focal-linux-bluefield'. If the problem still exists, change the tag 'verification-needed-focal-linux-bluefield' to 'verification-failed- focal-linux-bluefield'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-bluefield-v2 verification-needed-focal-linux-bluefield -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid.
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux/5.15.0-104.114 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux' to 'verification-done-jammy-linux'. If the problem still exists, change the tag 'verification-needed-jammy- linux' to 'verification-failed-jammy-linux'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-v2 verification-needed-jammy-linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-fips/5.4.0-1097.107 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-fips' to 'verification-done-focal- linux-fips'. If the problem still exists, change the tag 'verification- needed-focal-linux-fips' to 'verification-failed-focal-linux-fips'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-fips-v2 verification-needed-focal-linux-fips -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-kvm/5.4.0-.118 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-kvm' to 'verification-done-focal- linux-kvm'. If the problem still exists, change the tag 'verification- needed-focal-linux-kvm' to 'verification-failed-focal-linux-kvm'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-ibm-v2 verification-needed-focal-linux-ibm -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-ibm/5.4.0-1070.75 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-ibm' to 'verification-done-focal- linux-ibm'. If the problem still exists, change the tag 'verification- needed-focal-linux-ibm' to 'verification-failed-focal-linux-ibm'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem Description---
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-kvm/5.4.0-.118 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-kvm' to 'verification-done-focal- linux-kvm'. If the problem still exists, change the tag 'verification- needed-focal-linux-kvm' to 'verification-failed-focal-linux-kvm'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-kvm-v2 verification-needed-focal-linux-kvm -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-aws/5.4.0-1123.133 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-aws' to 'verification-done-focal- linux-aws'. If the problem still exists, change the tag 'verification- needed-focal-linux-aws' to 'verification-failed-focal-linux-aws'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-aws-v2 verification-needed-focal-linux-aws -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux- hwe-5.4/5.4.0-177.197~18.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic-linux- hwe-5.4' to 'verification-done-bionic-linux-hwe-5.4'. If the problem still exists, change the tag 'verification-needed-bionic-linux-hwe-5.4' to 'verification-failed-bionic-linux-hwe-5.4'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-bionic-linux-hwe-5.4-v2 verification-needed-bionic-linux-hwe-5.4 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid.
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-oracle/5.4.0-1122.131 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-oracle' to 'verification-done- focal-linux-oracle'. If the problem still exists, change the tag 'verification-needed-focal-linux-oracle' to 'verification-failed-focal- linux-oracle'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-oracle-v2 verification-needed-focal-linux-oracle -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-azure/5.4.0-1128.135 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-azure' to 'verification-done-focal- linux-azure'. If the problem still exists, change the tag 'verification- needed-focal-linux-azure' to 'verification-failed-focal-linux-azure'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-azure-v2 verification-needed-focal-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-azure/5.4.0-1128.135 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-azure' to 'verification-done-focal- linux-azure'. If the problem still exists, change the tag 'verification- needed-focal-linux-azure' to 'verification-failed-focal-linux-azure'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-gkeop/5.4.0-1090.94 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-gkeop' to 'verification-done-focal- linux-gkeop'. If the problem still exists, change the tag 'verification- needed-focal-linux-gkeop' to 'verification-failed-focal-linux-gkeop'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-gkeop-v2 verification-needed-focal-linux-gkeop -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-gcp/5.4.0-1127.136 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-gcp' to 'verification-done-focal- linux-gcp'. If the problem still exists, change the tag 'verification- needed-focal-linux-gcp' to 'verification-failed-focal-linux-gcp'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-gcp-v2 verification-needed-focal-linux-gcp -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux-raspi/5.4.0-1107.119 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-raspi' to 'verification-done-focal- linux-raspi'. If the problem still exists, change the tag 'verification- needed-focal-linux-raspi' to 'verification-failed-focal-linux-raspi'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-raspi-v2 verification-needed-focal-linux-raspi -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug was fixed in the package linux - 5.4.0-176.196 --- linux (5.4.0-176.196) focal; urgency=medium * focal/linux: 5.4.0-176.196 -proposed tracker (LP: #2058756) * Problems with HVCS and hotplugging (LP: #2056373) - powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry - powerpc/pseries: Fix of_read_drc_info_cell() to point at next record - hvcs: Fix hvcs port reference counting - hvcs: Use dev_groups to manage hvcs device attributes - hvcs: Use driver groups to manage driver attributes - hvcs: Get reference to tty in remove - hvcs: Use vhangup in hotplug remove - hvcs: Synchronize hotplug remove with port free linux (5.4.0-175.195) focal; urgency=medium * focal/linux: 5.4.0-175.195 -proposed tracker (LP: #2055684) * Packaging resync (LP: #1786013) - [Packaging] drop ABI data - [Packaging] update annotations scripts - debian.master/dkms-versions -- update from kernel-versions (main/2024.03.04) * Drop ABI checks from kernel build (LP: #2055686) - [Packaging] Remove in-tree abi checks - [Packaging] Bring back install- prerequisite for checks- - [Packaging] Remove abi-check from final-checks * Cranky update-dkms-versions rollout (LP: #2055685) - [Packaging] remove update-dkms-versions - Move debian/dkms-versions to debian.master/dkms-versions - [Packaging] Replace debian/dkms-versions with $(DEBIAN)/dkms-versions - [Packaging] remove update-version-dkms * linux-tools-common: man page of usbip[d] is misplaced (LP: #2054094) - [Packaging] rules: Put usbip manpages in the correct directory * CVE-2024-23851 - dm ioctl: log an error if the ioctl structure is corrupted - dm: limit the number of targets and parameter size area * Focal update: v5.4.268 upstream stable release (LP: #2055075) - f2fs: explicitly null-terminate the xattr list - pinctrl: lochnagar: Don't build on MIPS - ALSA: hda - Fix speaker and headset mic pin config for CHUWI CoreBook XPro - ASoC: Intel: Skylake: Fix mem leak in few functions - ASoC: nau8822: Fix incorrect type in assignment and cast to restricted __be16 - ASoC: Intel: Skylake: mem leak in skl register function - ASoC: cs43130: Fix the position of const qualifier - ASoC: cs43130: Fix incorrect frame delay configuration - ASoC: rt5650: add mutex to avoid the jack detection failure - nouveau/tu102: flush all pdbs on vmm flush - net/tg3: fix race condition in tg3_reset_task() - ASoC: da7219: Support low DC impedance headset - nvme: introduce helper function to get ctrl state - drm/exynos: fix a potential error pointer dereference - drm/exynos: fix a wrong error checking - clk: rockchip: rk3128: Fix HCLK_OTG gate register - jbd2: correct the printing of write_flags in jbd2_write_superblock() - drm/crtc: Fix uninit-value bug in drm_mode_setcrtc - neighbour: Don't let neigh_forced_gc() disable preemption for long - tracing: Have large events show up as '[LINE TOO BIG]' instead of nothing - tracing: Add size check when printing trace_marker output - ring-buffer: Do not record in NMI if the arch does not support cmpxchg in NMI - reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning - Input: atkbd - skip ATKBD_CMD_GETID in translated mode - Input: i8042 - add nomux quirk for Acer P459-G2-M - s390/scm: fix virtual vs physical address confusion - ARC: fix spare error - Input: xpad - add Razer Wolverine V2 support - ARM: sun9i: smp: fix return code check of of_property_match_string - drm/crtc: fix uninitialized variable use - ACPI: resource: Add another DMI match for the TongFang GMxXGxx - binder: use EPOLLERR from eventpoll.h - binder: fix trivial typo of binder_free_buf_locked() - binder: fix comment on binder_alloc_new_buf() return value - uio: Fix use-after-free in uio_open - parport: parport_serial: Add Brainboxes BAR details - parport: parport_serial: Add Brainboxes device IDs and geometry - coresight: etm4x: Fix width of CCITMIN field - x86/lib: Fix overflow when counting digits - EDAC/thunderx: Fix possible out-of-bounds string access - powerpc: add crtsavres.o to always-y instead of extra-y - powerpc/44x: select I2C for CURRITUCK - powerpc/pseries/memhotplug: Quieten some DLPAR operations - powerpc/pseries/memhp: Fix access beyond end of drmem array - selftests/powerpc: Fix error handling in FPU/VMX preemption tests - powerpc/powernv: Add a null pointer check to scom_debug_init_one() - powerpc/powernv: Add a null pointer check in opal_event_init() - powerpc/powernv: Add a null pointer check in opal_powercap_init() - powerpc/imc-pmu: Add a null pointer check in update_events_in_group() - mtd: rawnand: Increment IFC_TIMEOUT_MSECS for nand controller response - ACPI: video: check for error while searching for backlight
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
Based on this, I'll set the tag to done. Thanks for testing it ** Tags removed: verification-needed-focal-linux ** Tags added: verification-done-focal-linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
This bug is awaiting verification that the linux/5.4.0-176.196 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux' to 'verification-done-focal-linux'. If the problem still exists, change the tag 'verification-needed-focal- linux' to 'verification-failed-focal-linux'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-v2 verification-needed-focal-linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
** Changed in: ubuntu-power-systems Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. This leads to HVCS never having probe() called. In
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
** Changed in: linux (Ubuntu Focal) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Jammy) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot,
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
SRU request submitted to the Ubuntu kernel team mailing list for mantic, lunar and jammy. https://lists.ubuntu.com/archives/kernel-team/2024-March/thread.html#149437 Changing status to 'In Progress' for jammy and focal. ** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: linux (Ubuntu Jammy) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: SRU Justification: == [Impact] * HVCS (Hypervisor Virtual Console Server) is broken because the virtual terminal mkvterm fails, caused by pvmutil failing. * When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. * This leads to HVCS never having probe() called. * In addition, HVCS is missing patches/fixes, and is broken without them. [Fix] * Fix one and two is required for focal only, all other for focal and jammy: * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 "powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa "powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc "hvcs: Fix hvcs port reference counting" * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 "hvcs: Use dev_groups to manage hvcs device attributes" * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a "hvcs: Use driver groups to manage driver attributes" * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 "hvcs: Get reference to tty in remove" * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 "hvcs: Use vhangup in hotplug remove" * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f "hvcs: Synchronize hotplug remove with port free" [Test Plan] * The high level test plan is to run mkvterm with an id. * mkvterm will fail because /dev/hvcs* device nodes are missing. * Details see https://bugs.launchpad.net/bugs/2023243 for more information. Especially the script provided by IBM (see original bug description: `---Steps to Reproduce---`). * IBM will (stress) test the updated kernel(s) provided in -proposed. [Where problems could occur] * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c and are needed to fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. In case of issues here hotplugging with drmgr might break. * The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). * The remaning 6 commits are needed for HVCS, that is essentially broken without them. Overall, issues they fix are race conditions, hotplug remove issues, as well as memory leaks. * Please notice that this is entirely ppc64el architecture-specifc. [Other Info] * All the commits listed above are included in mantic and noble. Hence these are set to Invalid. * Meanwhile these requested commits have been added to other kernels and distros. __ ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
** Description changed: + SRU Justification: + == + + [Impact] + + * HVCS (Hypervisor Virtual Console Server) is broken because the +virtual terminal mkvterm fails, caused by pvmutil failing. + + * When mkvterm is ran, it ultimately fails because it calls pvmutil +which fails. +pvmutil calls drmgr, and drmgr is adding a slot correctly. +However, when drmgr writes the slot information to ?/add_slot, +the return is -ENODEV. + + * This leads to HVCS never having probe() called. + + * In addition, HVCS is missing patches/fixes, and is broken without + them. + + [Fix] + + * Fix one and two is required for focal only, all other for focal and + jammy: + + * 57409d4fb12c 57409d4fb12c185b2c0689e0496878c8f6bb5b58 +"powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry" + + * c5e76fa05b2d c5e76fa05b2df519b9f08571cc57e623c1569faa +"powerpc/pseries: Fix of_read_drc_info_cell() to point at next record" + + * 6a9a733edd46 6a9a733edd46732e906d976dc21a42dd361e53cc +"hvcs: Fix hvcs port reference counting" + + * 760aa5e81f33 760aa5e81f33e0da82512c4288489739a6d1c556 +"hvcs: Use dev_groups to manage hvcs device attributes" + + * 503a90dd619d 503a90dd619d52dcac2cc68bd742aa914c7cd47a +"hvcs: Use driver groups to manage driver attributes" + + * 3a8d3b366ce4 3a8d3b366ce47024bf274eac783f8af5df2780f5 +"hvcs: Get reference to tty in remove" + + * d432228bc7b1 d432228bc7b1b3f0ed06510278ff5a77b3749fe6 +"hvcs: Use vhangup in hotplug remove" + + * 28d49f8cbe9c 28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f +"hvcs: Synchronize hotplug remove with port free" + + [Test Plan] + + * The high level test plan is to run mkvterm with an id. + + * mkvterm will fail because /dev/hvcs* device nodes are missing. + + * Details see https://bugs.launchpad.net/bugs/2023243 for more information. +Especially the script provided by IBM +(see original bug description: `---Steps to Reproduce---`). + + * IBM will (stress) test the updated kernel(s) provided in -proposed. + + [Where problems could occur] + + * The first two commits affect arch/powerpc/platforms/pseries/of_helpers.c +and are needed to fix the hotplugging issue seen when drmgr goes to write +the slot information to /sys/bus/pci/slots/control/add_slot. +In case of issues here hotplugging with drmgr might break. + + * The issue lies in rpadlpar_io and rpaphp calling an of helper function +of_read_drc_info_cell(). Without these commits, the value stored +drc_index_start is incorrect. +This ultimately results in the entire SLOT string being incorrect, +and rpaphp never finding the newly added slot by drmgr. +rpadlpar then returns -ENODEV. +Therefore, HVCS is never probed, and the device nodes are never created. + + * HVCS, rpadlpar_io, and rpaphp should ideally not even need to be loaded +prior to drmgr adding a vio slot. +If rpadlpar_io and rpaphp are not loaded, drmgr will load them. +In addition, if rpadlpar_io and rpaphp register the new slot correctly, +rpadlpar_io will call dlpar_add_vio_slot(), +which calls vio_register_device_node() with the device node. +This is what tells the driver core to init and probe HVCS +(which is needed to create the device nodes). + + * The remaning 6 commits are needed for HVCS, that is essentially +broken without them. +Overall, issues they fix are race conditions, hotplug remove issues, +as well as memory leaks. + + * Please notice that this is entirely ppc64el architecture-specifc. + + [Other Info] + + * All the commits listed above are included in mantic and noble. +Hence these are set to Invalid. + + * Meanwhile these requested commits have been added to other +kernels and distros. + __ + ---Problem Description--- - Issues with HVCS and hotplugging issues. + Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. - When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. This leads to HVCS never having probe() called. In addition, HVCS is missing patches, and is broken without them. 8 kernel patches have been identified to fix these issues. - + When mkvterm is ran, it ultimately fails because it calls pvmutil which + fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. + However, when drmgr writes the slot information to ?/add_slot, the + return is -ENODEV. This leads to HVCS never having probe() called. In + addition, HVCS is missing patches, and is broken without them. 8 kernel + patches have been
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
Currently test kernels are being build for focal/20.04 and jammy/22.04 in this PPA: https://launchpad.net/~fheimes/+archive/ubuntu/lp2056373 ** Changed in: linux (Ubuntu Focal) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Jammy) Status: Triaged => In Progress ** Changed in: ubuntu-power-systems Status: Triaged => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. This leads to HVCS never having probe() called. In addition, HVCS is missing patches, and is broken without them. 8 kernel patches have been identified to fix these issues. ---uname output--- Linux neop91.pok.stglabs.ibm.com 5.4.0-173-generic #191-Ubuntu SMP Fri Feb 2 13:54:35 UTC 2024 ppc64le ppc64le ppc64le GNU/Linux ---Steps to Reproduce--- Run mkvterm with an id. mkvterm will fail because /dev/hvcs* device nodes are missing. See https://bugs.launchpad.net/ubuntu/+source/powerpc-utils/+bug/2023243 for more information. 2 commits made to arch/powerpc/platforms/pseries/of_helpers.c are needed. These commits fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. This is also why the HVCS device nodes were not being created, as mentioned in the previous bug. The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. Ideally - HVCS, rpadlpar_io, and rpaphp should not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). In addition to the 2 commits mentioned above, 6 HVCS commits are needed. HVCS is essentially broken without them. Issues include race conditions, hotplug remove issues, as well as memory leaks. These commits have been added to other distros after multiple issues were seen. Without these commits, 20.04 will experience the same issues. IBM plans on stress testing these changes after an updated kernel is provided in focal-proposed. --- 2 commits that make changes to arch/powerpc/platforms/pseries/of_helpers.c: powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=57409d4fb12c185b2c0689e0496878c8f6bb5b58 powerpc/pseries: Fix of_read_drc_info_cell() to point at next record https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5e76fa05b2df519b9f08571cc57e623c1569faa HVCS commits: hvcs: Fix hvcs port reference counting https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a9a733edd46732e906d976dc21a42dd361e53cc hvcs: Use dev_groups to manage hvcs device attributes https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=760aa5e81f33e0da82512c4288489739a6d1c556 hvcs: Use driver groups to manage driver attributes https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=503a90dd619d52dcac2cc68bd742aa914c7cd47a hvcs: Get reference to tty in remove https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a8d3b366ce47024bf274eac783f8af5df2780f5 hvcs: Use vhangup in hotplug remove
[Kernel-packages] [Bug 2056373] Re: Problems with HVCS and hotplugging
** Summary changed: - Multiple issues found on Ubuntu 20.04 against HVCS + Problems with HVCS and hotplugging -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056373 Title: Problems with HVCS and hotplugging Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Triaged Status in linux source package in Jammy: Triaged Status in linux source package in Mantic: Invalid Status in linux source package in Noble: Invalid Bug description: ---Problem Description--- Issues with HVCS and hotplugging issues. When working on Canonical bug 2023243, it was discovered that mkvterm was not working for multiple reasons. This bug will cover the issues found in HVCS, and hotplugging issues found when drmgr writes the slot information to .../add_slot. When mkvterm is ran, it ultimately fails because it calls pvmutil which fails. pvmutil calls drmgr, and drmgr is adding a slot correctly. However, when drmgr writes the slot information to ?/add_slot, the return is -ENODEV. This leads to HVCS never having probe() called. In addition, HVCS is missing patches, and is broken without them. 8 kernel patches have been identified to fix these issues. ---uname output--- Linux neop91.pok.stglabs.ibm.com 5.4.0-173-generic #191-Ubuntu SMP Fri Feb 2 13:54:35 UTC 2024 ppc64le ppc64le ppc64le GNU/Linux ---Steps to Reproduce--- Run mkvterm with an id. mkvterm will fail because /dev/hvcs* device nodes are missing. See https://bugs.launchpad.net/ubuntu/+source/powerpc-utils/+bug/2023243 for more information. 2 commits made to arch/powerpc/platforms/pseries/of_helpers.c are needed. These commits fix the hotplugging issue seen when drmgr goes to write the slot information to /sys/bus/pci/slots/control/add_slot. This is also why the HVCS device nodes were not being created, as mentioned in the previous bug. The issue lies in rpadlpar_io and rpaphp calling an of helper function of_read_drc_info_cell(). Without these commits, the value stored drc_index_start is incorrect. This ultimately results in the entire SLOT string being incorrect, and rpaphp never finding the newly added slot by drmgr. rpadlpar then returns -ENODEV. Therefore, HVCS is never probed, and the device nodes are never created. Ideally - HVCS, rpadlpar_io, and rpaphp should not even need to be loaded prior to drmgr adding a vio slot. If rpadlpar_io and rpaphp are not loaded, drmgr will load them. In addition, if rpadlpar_io and rpaphp register the new slot correctly, rpadlpar_io will call dlpar_add_vio_slot(), which calls vio_register_device_node() with the device node. This is what tells the driver core to init and probe HVCS (which is needed to create the device nodes). In addition to the 2 commits mentioned above, 6 HVCS commits are needed. HVCS is essentially broken without them. Issues include race conditions, hotplug remove issues, as well as memory leaks. These commits have been added to other distros after multiple issues were seen. Without these commits, 20.04 will experience the same issues. IBM plans on stress testing these changes after an updated kernel is provided in focal-proposed. --- 2 commits that make changes to arch/powerpc/platforms/pseries/of_helpers.c: powerpc/pseries: Fix bad drc_index_start value parsing of drc-info entry https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=57409d4fb12c185b2c0689e0496878c8f6bb5b58 powerpc/pseries: Fix of_read_drc_info_cell() to point at next record https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5e76fa05b2df519b9f08571cc57e623c1569faa HVCS commits: hvcs: Fix hvcs port reference counting https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a9a733edd46732e906d976dc21a42dd361e53cc hvcs: Use dev_groups to manage hvcs device attributes https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=760aa5e81f33e0da82512c4288489739a6d1c556 hvcs: Use driver groups to manage driver attributes https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=503a90dd619d52dcac2cc68bd742aa914c7cd47a hvcs: Get reference to tty in remove https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a8d3b366ce47024bf274eac783f8af5df2780f5 hvcs: Use vhangup in hotplug remove https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d432228bc7b1b3f0ed06510278ff5a77b3749fe6 hvcs: Synchronize hotplug remove with port free https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=28d49f8cbe9c7966f91ee1b5ec2f997f6e55bf9f To manage notifications about this bug go to:
