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Commit 533ca1fe authored by Dexuan Cui's avatar Dexuan Cui Committed by Lorenzo Pieralisi
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PCI: hv: Avoid use of hv_pci_dev->pci_slot after freeing it 



The slot must be removed before the pci_dev is removed, otherwise a panic
can happen due to use-after-free.

Fixes: 15becc2b ("PCI: hv: Add hv_pci_remove_slots() when we unload the driver")
Signed-off-by: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
parent 5f9e832c

drivers/pci/controller/pci-hyperv.c

+1 −1
Original line number Diff line number Diff line
@@ -2701,8 +2701,8 @@ 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;

	}