[Kernel-packages] [Bug 1971164] Re: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection
This bug was fixed in the package linux-azure-cvm - 5.4.0-1080.83+cvm1 --- linux-azure-cvm (5.4.0-1080.83+cvm1) focal; urgency=medium * focal/linux-azure-cvm: 5.4.0-1080.83+cvm1 -proposed tracker (LP: #1973948) * [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection (LP: #1971164) - SAUCE: hv/bounce buffer: Fix a race that can fail disk detection [ Ubuntu: 5.4.0-1080.83 ] * focal/linux-azure: 5.4.0-1080.83 -proposed tracker (LP: #1973952) * focal/linux: 5.4.0-113.127 -proposed tracker (LP: #1973980) * CVE-2022-29581 - net/sched: cls_u32: fix netns refcount changes in u32_change() * CVE-2022-1116 - io_uring: fix fs->users overflow * ext4: limit length to bitmap_maxbytes (LP: #1972281) - ext4: limit length to bitmap_maxbytes - blocksize in punch_hole * Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (LP: #1972740) - ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE -- Marcelo Henrique Cerri Mon, 23 May 2022 18:06:01 -0300 ** Changed in: linux-azure-cvm (Ubuntu Focal) Status: Fix Committed => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-1116 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-29581 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure-cvm in Ubuntu. https://bugs.launchpad.net/bugs/1971164 Title: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection Status in linux-azure-cvm package in Ubuntu: Invalid Status in linux-azure-cvm source package in Focal: Fix Released Bug description: SRU Justification [Impact] The linux-azure-cvm kernel (e.g. Ubuntu-azure-cvm-5.4.0-1078.81+cvm1) has a race condition bug in the Linux vmbus bounce buffer code (drivers/hv/hv_bounce.c), and as a result somtimes the kenrel fails to detect some of the SCSI disks, and the Linux dmesg log may show one of the 2 messages: #1: [ 2.995732] sd 3:0:0:3: [sdd] Sector size 0 reported, assuming 512. #2: [ 3.651293] scsi host3: scsi scan: INQUIRY result too short (5), using 36 Sometimes I see a strange call-trace (the 'order's is 18, if I print it) 2022-04-26T20:10:18,398144+00:00 kmalloc_order_trace+0x1e/0x80 2022-04-26T20:10:18,398147+00:00 __kmalloc+0x3ae/0x4c0 2022-04-26T20:10:18,398150+00:00 __scsi_scan_target+0x283/0x590 2022-04-26T20:10:18,398155+00:00 scsi_scan_channel.part.16+0x62/0x80 2022-04-26T20:10:18,398158+00:00 scsi_scan_host_selected+0xd5/0x150 2022-04-26T20:10:18,398160+00:00 store_scan+0xc8/0xe0 (This is very strange because 'order 18' means (1 << 18) * 4096 bytes = 1GBytes.) After some investigation, we eventually got the root cause and made a fix: https://github.com/dcui/linux-azure-cvm/commit/ddde4dc33242794000e1d9667a5f9cfa31c15fdf With the fix, we no longer see the above strange symptoms. Please include the fix into the next release of the v5.4 linux-azure-cvm kernel. Thanks! [Test case] Microsoft tested [Where things could go wrong] Some SCSI drives may continue to go undetected. [Other Info] SF: #00335631 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure-cvm/+bug/1971164/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1971164] Re: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection
MSFT tested. Marking verification-done-focal ** Tags removed: verification-needed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure-cvm in Ubuntu. https://bugs.launchpad.net/bugs/1971164 Title: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection Status in linux-azure-cvm package in Ubuntu: Invalid Status in linux-azure-cvm source package in Focal: Fix Committed Bug description: SRU Justification [Impact] The linux-azure-cvm kernel (e.g. Ubuntu-azure-cvm-5.4.0-1078.81+cvm1) has a race condition bug in the Linux vmbus bounce buffer code (drivers/hv/hv_bounce.c), and as a result somtimes the kenrel fails to detect some of the SCSI disks, and the Linux dmesg log may show one of the 2 messages: #1: [ 2.995732] sd 3:0:0:3: [sdd] Sector size 0 reported, assuming 512. #2: [ 3.651293] scsi host3: scsi scan: INQUIRY result too short (5), using 36 Sometimes I see a strange call-trace (the 'order's is 18, if I print it) 2022-04-26T20:10:18,398144+00:00 kmalloc_order_trace+0x1e/0x80 2022-04-26T20:10:18,398147+00:00 __kmalloc+0x3ae/0x4c0 2022-04-26T20:10:18,398150+00:00 __scsi_scan_target+0x283/0x590 2022-04-26T20:10:18,398155+00:00 scsi_scan_channel.part.16+0x62/0x80 2022-04-26T20:10:18,398158+00:00 scsi_scan_host_selected+0xd5/0x150 2022-04-26T20:10:18,398160+00:00 store_scan+0xc8/0xe0 (This is very strange because 'order 18' means (1 << 18) * 4096 bytes = 1GBytes.) After some investigation, we eventually got the root cause and made a fix: https://github.com/dcui/linux-azure-cvm/commit/ddde4dc33242794000e1d9667a5f9cfa31c15fdf With the fix, we no longer see the above strange symptoms. Please include the fix into the next release of the v5.4 linux-azure-cvm kernel. Thanks! [Test case] Microsoft tested [Where things could go wrong] Some SCSI drives may continue to go undetected. [Other Info] SF: #00335631 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure-cvm/+bug/1971164/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1971164] Re: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection
This bug is awaiting verification that the linux-azure- cvm/5.4.0-1080.83+cvm1 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' to 'verification- done-focal'. If the problem still exists, change the tag 'verification- needed-focal' to 'verification-failed-focal'. 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: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure-cvm in Ubuntu. https://bugs.launchpad.net/bugs/1971164 Title: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection Status in linux-azure-cvm package in Ubuntu: Invalid Status in linux-azure-cvm source package in Focal: Fix Committed Bug description: SRU Justification [Impact] The linux-azure-cvm kernel (e.g. Ubuntu-azure-cvm-5.4.0-1078.81+cvm1) has a race condition bug in the Linux vmbus bounce buffer code (drivers/hv/hv_bounce.c), and as a result somtimes the kenrel fails to detect some of the SCSI disks, and the Linux dmesg log may show one of the 2 messages: #1: [ 2.995732] sd 3:0:0:3: [sdd] Sector size 0 reported, assuming 512. #2: [ 3.651293] scsi host3: scsi scan: INQUIRY result too short (5), using 36 Sometimes I see a strange call-trace (the 'order's is 18, if I print it) 2022-04-26T20:10:18,398144+00:00 kmalloc_order_trace+0x1e/0x80 2022-04-26T20:10:18,398147+00:00 __kmalloc+0x3ae/0x4c0 2022-04-26T20:10:18,398150+00:00 __scsi_scan_target+0x283/0x590 2022-04-26T20:10:18,398155+00:00 scsi_scan_channel.part.16+0x62/0x80 2022-04-26T20:10:18,398158+00:00 scsi_scan_host_selected+0xd5/0x150 2022-04-26T20:10:18,398160+00:00 store_scan+0xc8/0xe0 (This is very strange because 'order 18' means (1 << 18) * 4096 bytes = 1GBytes.) After some investigation, we eventually got the root cause and made a fix: https://github.com/dcui/linux-azure-cvm/commit/ddde4dc33242794000e1d9667a5f9cfa31c15fdf With the fix, we no longer see the above strange symptoms. Please include the fix into the next release of the v5.4 linux-azure-cvm kernel. Thanks! [Test case] Microsoft tested [Where things could go wrong] Some SCSI drives may continue to go undetected. [Other Info] SF: #00335631 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure-cvm/+bug/1971164/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1971164] Re: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection
** Changed in: linux-azure-cvm (Ubuntu Focal) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure-cvm in Ubuntu. https://bugs.launchpad.net/bugs/1971164 Title: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection Status in linux-azure-cvm package in Ubuntu: Invalid Status in linux-azure-cvm source package in Focal: Fix Committed Bug description: SRU Justification [Impact] The linux-azure-cvm kernel (e.g. Ubuntu-azure-cvm-5.4.0-1078.81+cvm1) has a race condition bug in the Linux vmbus bounce buffer code (drivers/hv/hv_bounce.c), and as a result somtimes the kenrel fails to detect some of the SCSI disks, and the Linux dmesg log may show one of the 2 messages: #1: [ 2.995732] sd 3:0:0:3: [sdd] Sector size 0 reported, assuming 512. #2: [ 3.651293] scsi host3: scsi scan: INQUIRY result too short (5), using 36 Sometimes I see a strange call-trace (the 'order's is 18, if I print it) 2022-04-26T20:10:18,398144+00:00 kmalloc_order_trace+0x1e/0x80 2022-04-26T20:10:18,398147+00:00 __kmalloc+0x3ae/0x4c0 2022-04-26T20:10:18,398150+00:00 __scsi_scan_target+0x283/0x590 2022-04-26T20:10:18,398155+00:00 scsi_scan_channel.part.16+0x62/0x80 2022-04-26T20:10:18,398158+00:00 scsi_scan_host_selected+0xd5/0x150 2022-04-26T20:10:18,398160+00:00 store_scan+0xc8/0xe0 (This is very strange because 'order 18' means (1 << 18) * 4096 bytes = 1GBytes.) After some investigation, we eventually got the root cause and made a fix: https://github.com/dcui/linux-azure-cvm/commit/ddde4dc33242794000e1d9667a5f9cfa31c15fdf With the fix, we no longer see the above strange symptoms. Please include the fix into the next release of the v5.4 linux-azure-cvm kernel. Thanks! [Test case] Microsoft tested [Where things could go wrong] Some SCSI drives may continue to go undetected. [Other Info] SF: #00335631 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure-cvm/+bug/1971164/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1971164] Re: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection
Patch submitted: https://lists.ubuntu.com/archives/kernel- team/2022-May/129853.html ** Also affects: linux-azure-cvm (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: linux-azure-cvm (Ubuntu) Status: In Progress => Invalid ** Changed in: linux-azure-cvm (Ubuntu) Importance: Medium => Undecided ** Changed in: linux-azure-cvm (Ubuntu) Assignee: Tim Gardner (timg-tpi) => (unassigned) ** Changed in: linux-azure-cvm (Ubuntu Focal) Importance: Undecided => Medium ** Changed in: linux-azure-cvm (Ubuntu Focal) Status: New => In Progress ** Changed in: linux-azure-cvm (Ubuntu Focal) Assignee: (unassigned) => Tim Gardner (timg-tpi) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure-cvm in Ubuntu. https://bugs.launchpad.net/bugs/1971164 Title: [Azure][CVM] hv/bounce buffer: Fix a race that can fail disk detection Status in linux-azure-cvm package in Ubuntu: Invalid Status in linux-azure-cvm source package in Focal: In Progress Bug description: SRU Justification [Impact] The linux-azure-cvm kernel (e.g. Ubuntu-azure-cvm-5.4.0-1078.81+cvm1) has a race condition bug in the Linux vmbus bounce buffer code (drivers/hv/hv_bounce.c), and as a result somtimes the kenrel fails to detect some of the SCSI disks, and the Linux dmesg log may show one of the 2 messages: #1: [ 2.995732] sd 3:0:0:3: [sdd] Sector size 0 reported, assuming 512. #2: [ 3.651293] scsi host3: scsi scan: INQUIRY result too short (5), using 36 Sometimes I see a strange call-trace (the 'order's is 18, if I print it) 2022-04-26T20:10:18,398144+00:00 kmalloc_order_trace+0x1e/0x80 2022-04-26T20:10:18,398147+00:00 __kmalloc+0x3ae/0x4c0 2022-04-26T20:10:18,398150+00:00 __scsi_scan_target+0x283/0x590 2022-04-26T20:10:18,398155+00:00 scsi_scan_channel.part.16+0x62/0x80 2022-04-26T20:10:18,398158+00:00 scsi_scan_host_selected+0xd5/0x150 2022-04-26T20:10:18,398160+00:00 store_scan+0xc8/0xe0 (This is very strange because 'order 18' means (1 << 18) * 4096 bytes = 1GBytes.) After some investigation, we eventually got the root cause and made a fix: https://github.com/dcui/linux-azure-cvm/commit/ddde4dc33242794000e1d9667a5f9cfa31c15fdf With the fix, we no longer see the above strange symptoms. Please include the fix into the next release of the v5.4 linux-azure-cvm kernel. Thanks! [Test case] Microsoft tested [Where things could go wrong] Some SCSI drives may continue to go undetected. [Other Info] SF: #00335631 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure-cvm/+bug/1971164/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
