diff options
| author | Zlatko Calusic <[email protected]> | 2012-12-28 03:16:38 +0100 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-12-28 08:42:39 -0800 |
| commit | ecccd1248d6e6986130ffcc3b0d003cb46a485c0 (patch) | |
| tree | bc9fdf3caf32e846776f13985f837c89455cbb39 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 101e5c7470eb7f77ae87f966b9155f0dbb5b4698 (diff) | |
mm: fix null pointer dereference in wait_iff_congested()
An unintended consequence of commit 4ae0a48b5efc ("mm: modify
pgdat_balanced() so that it also handles order-0") is that
wait_iff_congested() can now be called with NULL 'struct zone *'
producing kernel oops like this:
BUG: unable to handle kernel NULL pointer dereference
IP: [<ffffffff811542d9>] wait_iff_congested+0x59/0x140
This trivial patch fixes it.
Reported-by: Zhouping Liu <[email protected]>
Reported-and-tested-by: Sedat Dilek <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Zlatko Calusic <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions