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pci-v4.18-fixes-4 

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Merge tag 'pci-v4.18-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Fix a use-after-free error in fatal error recovery (Thomas Tai)"

* tag 'pci-v4.18-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/AER: Work around use-after-free in pcie_do_fatal_recovery()
This commit is contained in:
Linus Torvalds 2018-07-27 10:28:51 -07:00
parent 6284c99cf1 bd91b56cb3
commit 1a3d8691fd
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/pcie/err.c
View File

@ -295,6 +295,7 @@ void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service)
parent = udev->subordinate;
pci_lock_rescan_remove();
pci_dev_get(dev);
list_for_each_entry_safe_reverse(pdev, temp, &parent->devices,
bus_list) {
pci_dev_get(pdev);
@ -328,6 +329,7 @@ void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service)
pci_info(dev, "Device recovery from fatal error failed\n");
}
pci_dev_put(dev);
pci_unlock_rescan_remove();
}