Commit bcbe3730 authored Sep 12, 2018 by Sam Bobroff Committed by Michael Ellerman Oct 13, 2018

powerpc/eeh: Fix null deref for devices removed during EEH



If a device is removed during EEH processing (either by a driver's
handler or as part of recovery), it can lead to a null dereference
in eeh_pe_report_edev().

To handle this, skip devices that have been removed.

Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent f9bc28ae

arch/powerpc/kernel/eeh_driver.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -281,6 +281,10 @@ static void eeh_pe_report_edev(struct eeh_dev *edev, eeh_report_fn fn,
		struct pci_driver *driver;
		enum pci_ers_result new_result;

		if (!edev->pdev) {
		eeh_edev_info(edev, "no device");
		return;
		}
		device_lock(&edev->pdev->dev);
		if (eeh_edev_actionable(edev)) {
		driver = eeh_pcid_get(edev->pdev);