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| author | Jiri Slaby <[email protected]> | 2010-06-09 20:31:13 +0000 |
|---|---|---|
| committer | Jesse Barnes <[email protected]> | 2010-06-11 20:10:21 +0000 |
| commit | a7ef7d1f5e898984c479e8c41ca702141bbadc78 (patch) | |
| tree | fa742fbb39071799d02652cf5cbbca3f25af5724 /fs/proc/array.c | |
| parent | Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/" (diff) | |
| download | kernel-a7ef7d1f5e898984c479e8c41ca702141bbadc78.tar.gz kernel-a7ef7d1f5e898984c479e8c41ca702141bbadc78.zip | |
PCI: hotplug/cpqphp, fix NULL dereference
There are devices out there which are PCI Hot-plug controllers with
compaq PCI IDs, but are not bridges, hence have pdev->subordinate
NULL. But cpqphp expects the pointer to be non-NULL.
Add a check to the probe function to avoid oopses like:
BUG: unable to handle kernel NULL pointer dereference at 00000050
IP: [<f82e3c41>] cpqhpc_probe+0x951/0x1120 [cpqphp]
*pdpt = 0000000033779001 *pde = 0000000000000000
...
The device here was:
00:0b.0 PCI Hot-plug controller [0804]: Compaq Computer Corporation PCI Hotplug Controller [0e11:a0f7] (rev 11)
Subsystem: Compaq Computer Corporation Device [0e11:a2f8]
Signed-off-by: Jiri Slaby <[email protected]>
Cc: Greg KH <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions