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04bbe86324
linux/drivers/pci
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Dexuan Cui 04bbe86324 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/20230816175939.21566-1-decui@microsoft.com
Fixes: dc2b453290 ("PCI: hv: Rework MSI handling")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: sathyanarayanan.kuppuswamy@linux.intel.com
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: stable@vger.kernel.org
2023-08-22 15:03:11 +02:00
..
controller PCI: hv: Fix a crash in hv_pci_restore_msi_msg() during hibernation 2023-08-22 15:03:11 +02:00
endpoint Fixes for pci_clean_master, error handling in driver inits, and various 2023-07-09 09:35:51 -07:00
hotplug Merge branch 'pci/hotplug' 2023-06-26 12:59:56 -05:00
msi PCI/MSI: Remove over-zealous hardware size check in pci_msix_validate_entries() 2023-04-16 14:11:51 +02:00
pcie Merge branch 'pci/enumeration' 2023-06-26 12:59:56 -05:00
switch driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
access.c PCI: Access Link 2 registers only for devices with Links 2022-11-04 10:38:11 -05:00
ats.c PCI: Enable PASID only when ACS RR & UF enabled on upstream path 2022-11-03 15:47:47 +01:00
bus.c pci-v6.4-changes 2023-04-27 10:45:30 -07:00
doe.c PCI/DOE: Relax restrictions on request and response size 2023-04-18 10:36:58 -07:00
ecam.c
host-bridge.c
iov.c PCI/IOV: Enlarge virtfn sysfs name buffer 2023-01-18 10:54:41 -06:00
irq.c PCI: Check for alloc failure in pci_request_irq() 2022-11-21 16:55:18 -06:00
Kconfig scatterlist: add dedicated config for DMA flags 2023-06-19 16:19:22 -07:00
Makefile PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
mmap.c PCI: Remove pci_mmap_page_range() wrapper 2022-07-29 12:08:44 -05:00
of.c PCI: of: Propagate firmware node by calling device_set_node() 2023-06-06 17:15:45 -05:00
p2pdma.c PCI/P2PDMA: Fix pci_p2pmem_find_many() kernel-doc 2023-04-06 16:37:51 -05:00
pci-acpi.c PCI/ACPI: Call _REG when transitioning D-states 2023-06-23 12:28:08 -05:00
pci-bridge-emul.c PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value 2022-08-25 12:07:56 +02:00
pci-bridge-emul.h PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value 2022-08-25 12:07:56 +02:00
pci-driver.c PCI/PM: Drop pci_bridge_wait_for_secondary_bus() timeout parameter 2023-04-11 17:35:06 -05:00
pci-label.c
pci-mid.c
pci-pf-stub.c
pci-stub.c PCI: pci_stub: Set driver_managed_dma 2022-04-28 15:32:20 +02:00
pci-sysfs.c driver core: bus: mark the struct bus_type for sysfs callbacks as constant 2023-03-23 13:20:40 +01:00
pci.c Merge branch 'pci/pm' 2023-06-26 12:59:56 -05:00
pci.h Merge branch 'pci/pm' 2023-06-26 12:59:56 -05:00
probe.c Merge branch 'pci/resource' 2023-06-26 12:59:57 -05:00
proc.c PCI: Remove pci_mmap_page_range() wrapper 2022-07-29 12:08:44 -05:00
quirks.c pci-v6.5-changes 2023-06-30 15:06:45 -07:00
remove.c cxl for v6.4 2023-04-30 11:51:51 -07:00
rom.c
search.c
setup-bus.c PCI: Make pci_bus_for_each_resource() index optional 2023-04-05 15:10:09 -05:00
setup-irq.c
setup-res.c PCI: Introduce pci_dev_for_each_resource() 2023-04-04 10:43:52 -05:00
slot.c PCI/sysfs: Constify struct kobj_type pci_slot_ktype 2023-02-16 12:00:25 -06:00
syscall.c
vc.c
vgaarb.c PCI: Introduce pci_dev_for_each_resource() 2023-04-04 10:43:52 -05:00
vpd.c
xen-pcifront.c PCI: Introduce pci_dev_for_each_resource() 2023-04-04 10:43:52 -05:00