diff options
| author | Dexuan Cui <decui@microsoft.com> | 2019-08-03 01:50:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-01 09:26:09 +0300 |
| commit | 08fdaee2d97bdd55e03308b563783b2612670e8b (patch) | |
| tree | 8d786db091ee750769a4f128f823aff170e3f281 /drivers/pci | |
| parent | ef2baa03b7f04236c29cd679e356136031df5606 (diff) | |
| download | linux-08fdaee2d97bdd55e03308b563783b2612670e8b.tar.xz | |
PCI: hv: Avoid use of hv_pci_dev->pci_slot after freeing it
[ Upstream commit 533ca1feed98b0bf024779a14760694c7cb4d431 ]
The slot must be removed before the pci_dev is removed, otherwise a panic
can happen due to use-after-free.
Fixes: 15becc2b56c6 ("PCI: hv: Add hv_pci_remove_slots() when we unload the driver")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index 5dadc964ad3b..5c2849846641 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -2706,8 +2706,8 @@ static int hv_pci_remove(struct hv_device *hdev) /* Remove the bus from PCI's point of view. */ pci_lock_rescan_remove(); pci_stop_root_bus(hbus->pci_bus); - pci_remove_root_bus(hbus->pci_bus); hv_pci_remove_slots(hbus); + pci_remove_root_bus(hbus->pci_bus); pci_unlock_rescan_remove(); hbus->state = hv_pcibus_removed; } |