PCI: Prevent out of bounds access in numa_node override
authorSasha Levin <sasha.levin@oracle.com>
Wed, 7 Oct 2015 16:03:28 +0000 (11:03 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 7 Oct 2015 16:03:28 +0000 (11:03 -0500)
commit1266963170f576d4d08e6310b6963e26d3ff9d1e
treef7f1b34cd29a898d802a0730eefe4f7c8aa7fcf6
parentde24c18c0faca5ebd618e1cb87f5489745e40475
PCI: Prevent out of bounds access in numa_node override

63692df103e9 ("PCI: Allow numa_node override via sysfs") didn't check that
the numa node provided by userspace is valid.  Passing a node number too
high would attempt to access invalid memory and trigger a kernel panic.

Fixes: 63692df103e9 ("PCI: Allow numa_node override via sysfs")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.19+
drivers/pci/pci-sysfs.c