From: Sven Van Asbroeck <thesven73@xxxxxxxxx> [ Upstream commit 7cf58b79b3072029af127ae865ffc6f00f34b1f8 ] In remove(), ensure that the PME work cannot run after kfree() is called. Otherwise, this could result in a use-after-free. This issue was detected with the help of Coccinelle. Signed-off-by: Sven Van Asbroeck <TheSven73@xxxxxxxxx> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Cc: Sinan Kaya <okaya@xxxxxxxxxx> Cc: Frederick Lawler <fred@xxxxxxxxxxxx> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Cc: Keith Busch <keith.busch@xxxxxxxxx> Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/pci/pcie/pme.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index c2e6e3d1073f8..5500660bbb104 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -441,6 +441,7 @@ static void pcie_pme_remove(struct pcie_device *srv) pcie_pme_disable_interrupt(srv->port, data); free_irq(srv->irq, srv); + cancel_work_sync(&data->work); kfree(data); } -- 2.20.1
