-- Host with -proposed kernel --
ubuntu@anuchin:~$ virsh nodedev-detach pci_0002_01_00_1
Device pci_0002_01_00_1 detached
ubuntu@anuchin:~$
ubuntu@anuchin:~$ readlink /sys/bus/pci/devices/0002\:01\:00.1/driver
../../../../../../../bus/pci/drivers/vfio-pci
ubuntu@anuchin:~$
-- Bionic Guest --
ubuntu@ubuntu-pcitest:~$ lspci -k
00:00.0 Host bridge: Red Hat, Inc. QEMU PCIe Host bridge
Subsystem: Red Hat, Inc QEMU PCIe Host bridge
00:01.0 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
00:01.1 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
00:01.2 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
00:01.3 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
00:01.4 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
00:01.5 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
Kernel driver in use: pcieport
Kernel modules: shpchp
01:00.0 Ethernet controller: Red Hat, Inc Virtio network device (rev 01)
Subsystem: Red Hat, Inc Virtio network device
Kernel driver in use: virtio-pci
02:00.0 Communication controller: Red Hat, Inc Virtio console (rev 01)
Subsystem: Red Hat, Inc Virtio console
Kernel driver in use: virtio-pci
03:00.0 SCSI storage controller: Red Hat, Inc Virtio block device (rev 01)
Subsystem: Red Hat, Inc Virtio block device
Kernel driver in use: virtio-pci
04:00.0 SCSI storage controller: Red Hat, Inc Virtio block device (rev 01)
Subsystem: Red Hat, Inc Virtio block device
Kernel driver in use: virtio-pci
05:00.0 Ethernet controller: Cavium, Inc. THUNDERX Network Interface Controller
virtual function (rev 08)
Subsystem: Cavium, Inc. THUNDERX Network Interface Controller virtual
function
Kernel modules: nicvf
ubuntu@ubuntu-pcitest:~$
** Tags removed: verification-needed-artful
** Tags added: verification-done-artful
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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/1770254
Title:
[SRU][Artful] using vfio-pci on a combination of cn8xxx and some PCI
devices results in a kernel panic.
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
Fix Committed
Bug description:
[Impact]
Using vfio-pci on a combination of cn8xxx and some PCI devices results in a
kernel panic. This is triggered by issuing a bus or a slot reset on the PCI
device.
[Fix]
The following patches checks indicate that the reset is not possible
preventing the kernel panic.
357027786f35 PCI: Avoid bus reset if bridge itself is broken
822155100e58 PCI: Mark Cavium CN8xxx to avoid bus reset
33ba90aa4d44 PCI: Avoid slot reset if bridge itself is broken
These patches are already in Bionic, we need these patches in Artful
so that xenial linux-hwe also has the fix. The platforms of interest
were certified with Xenial and linux-hwe, so we are interested in
fixing this only in Artful.
[Test]
- Artful Host with Artful/bionic guests
- Pass though PCI device (vfio-pci) from Artful to bionic and make sure its
usable.
- The device should pass through and not cause a kernel panic.
A test kernel is available in ppa:manjo/lp1770254
[Regression Potential]
None.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1770254/+subscriptions
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