[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
Microsoft tested. Marking verification done. ** Tags removed: verification-needed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
This bug is awaiting verification that the linux-azure/5.4.0-1081.84 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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
** Changed in: linux-azure (Ubuntu Focal) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
I checked with Matthew and found Matthew only applied the first patch [1]; after I applied the second patch [2], I'm no longer seeing any crash or memory corruption issue in Matthew's VM. BTW, the Windows Server 2019 host running Matthew's VM doesn't work with NIC SR-IOV correctly: when SR-IOV is enabled, the host offers an Intel VF NIC to the VM, then immediately removes/rescinds the VF (this causes hv_pci_probe() to fail and the bug on its error handling path is triggered), and never re-offers the VF, i.e. NIC SR-IOV doesn't work on this host, but that's a host bug and the host team needs to investigate that. [0] https://lists.ubuntu.com/archives/kernel-team/2022-May/130378.html [1] https://lists.ubuntu.com/archives/kernel-team/2022-May/130379.html [2] https://lists.ubuntu.com/archives/kernel-team/2022-May/130380.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
I don't this this fix is correct, I am able to reproduce the crash in a
hyper-v VM and this generates a different KASAN bad free with the repro
case.
If you want to test (and have an environment with an SRIOV interface), you can
toggle SRIOV rapidly with this powershell snippet:
$vmname= 'name of vm'
while (1){
Set-VMNetworkAdapter -VMName $vmname -IovWeight 100
Set-VMNetworkAdapter -VMName $vmname -IovWeight 0
}
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Title:
Azure: Mellanox VF NIC crashes when removed
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[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
Dexuan - see https://bugs.launchpad.net/bugs/1973758 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1973758] Re: Azure: Mellanox VF NIC crashes when removed
Disregard the previous comment. Wrong bug. Patch submitted: https://lists.ubuntu.com/archives/kernel- team/2022-May/130376.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973758 Title: Azure: Mellanox VF NIC crashes when removed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1973758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
