linux/drivers/pci/host
Geert Uytterhoeven 0c31f1d7be PCI: rcar: Fix use-after-free in probe error path
If CONFIG_DEBUG_SLAB=y, and no PCIe card is inserted, the kernel crashes
during probe on r8a7791/koelsch:

  rcar-pcie fe000000.pcie: PCIe link down
  Unable to handle kernel paging request at virtual address 6b6b6b6b

(seeing this message requires earlycon and keep_bootcon).

Indeed, pci_free_host_bridge() frees the PCI host bridge, including the
embedded rcar_pcie object, so pci_free_resource_list() must not be called
afterwards.

To fix this, move the call to pci_free_resource_list() up, and update the
label name accordingly.

Fixes: ddd535f1ea ("PCI: rcar: Fix memory leak when no PCIe card is inserted")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2017-12-12 11:01:47 -06:00
..
Kconfig
Makefile pci-v4.15-changes 2017-11-15 15:01:28 -08:00
pci-aardvark.c
pci-ftpci100.c pci-v4.15-changes 2017-11-15 15:01:28 -08:00
pci-host-common.c
pci-host-generic.c
pci-hyperv.c
pci-mvebu.c
pci-rcar-gen2.c
pci-tegra.c pci-v4.15-changes 2017-11-15 15:01:28 -08:00
pci-thunder-ecam.c
pci-thunder-pem.c
pci-v3-semi.c
pci-versatile.c
pci-xgene-msi.c
pci-xgene.c Merge branch 'pci/host-xgene' into next 2017-11-14 12:11:37 -06:00
pcie-altera-msi.c
pcie-altera.c
pcie-iproc-bcma.c
pcie-iproc-msi.c
pcie-iproc-platform.c
pcie-iproc.c
pcie-iproc.h
pcie-mediatek.c
pcie-rcar.c PCI: rcar: Fix use-after-free in probe error path 2017-12-12 11:01:47 -06:00
pcie-rockchip.c
pcie-tango.c pci-v4.15-changes 2017-11-15 15:01:28 -08:00
pcie-xilinx-nwl.c
pcie-xilinx.c
vmd.c