tree 268a5f789769b258ecae3d85ab8f2b8f23b273f8
parent 64609eaab242d36e3e3b7cb81d31a028719feb74
author Colin Ian King <colin.king@canonical.com> 1451694421 +0000
committer Bjorn Helgaas <bhelgaas@google.com> 1452276753 -0600

PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot

ibm_slot_from_id() can return null if the des header signature is not
"aPCI" or if the kmalloc() for the return ACPI descriptor fails, causing
potential null pointer dereferences on the return null descriptor.

Handle the null case with appropriate check and error return.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>