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| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-03-20 10:34:00 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-21 16:17:24 +0100 |
| commit | b125130b22d67f249beba10b71a254558b5279d0 (patch) | |
| tree | f42f4f732a2d7920009f34d798d1803def38ea44 /kernel/Makefile | |
| parent | cd649b8bb830d65c57c3c8b98d57b5402256d8bd (diff) | |
blktrace: avoid accessing NULL bdev->bd_disk
bdev->bd_disk can be NULL, if the block device is not opened.
Try this against an unmounted partition, and you'll see NULL dereference:
# echo 1 > /sys/block/sda/sda5/enable
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <49C30098.6080107@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/Makefile')
0 files changed, 0 insertions, 0 deletions