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| author | Dexuan Cui <[email protected]> | 2023-08-16 17:59:39 +0000 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2023-08-22 13:03:11 +0000 |
| commit | 04bbe863241a9be7d57fb4cf217ee4a72f480e70 (patch) | |
| tree | 780200d11f0efebe8a6b94b1e479dc7dc7d87c78 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | Linux 6.5-rc1 (diff) | |
| download | kernel-04bbe863241a9be7d57fb4cf217ee4a72f480e70.tar.gz kernel-04bbe863241a9be7d57fb4cf217ee4a72f480e70.zip | |
PCI: hv: Fix a crash in hv_pci_restore_msi_msg() during hibernation
When a Linux VM with an assigned PCI device runs on Hyper-V, if the PCI
device driver is not loaded yet (i.e. MSI-X/MSI is not enabled on the
device yet), doing a VM hibernation triggers a panic in
hv_pci_restore_msi_msg() -> msi_lock_descs(&pdev->dev), because
pdev->dev.msi.data is still NULL.
Avoid the panic by checking if MSI-X/MSI is enabled.
Link: https://lore.kernel.org/r/[email protected]
Fixes: dc2b453290c4 ("PCI: hv: Rework MSI handling")
Signed-off-by: Dexuan Cui <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: [email protected]
Reviewed-by: Michael Kelley <[email protected]>
Cc: [email protected]
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions