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| author | Tejun Heo <tj@kernel.org> | 2011-06-01 08:27:41 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-06-01 08:28:47 +0200 |
| commit | 4c49ff3fe128ca68dabd07537415c419ad7f82f9 (patch) | |
| tree | 58898648d2b9d896804fa98fce9eecb2724e2a75 /block/cfq-iosched.c | |
| parent | 4495a7d41dbda03841c2a1c2a5ce7135a45131ba (diff) | |
| download | linux-4c49ff3fe128ca68dabd07537415c419ad7f82f9.tar.bz2 | |
block: blkdev_get() should access ->bd_disk only after success
d4dc210f69 (block: don't block events on excl write for non-optical
devices) added dereferencing of bdev->bd_disk to test
GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE; however, bdev->bd_disk can be
%NULL if open failed which can lead to an oops.
Test the flag after testing open was successful, not before.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: David Miller <davem@davemloft.net>
Tested-by: David Miller <davem@davemloft.net>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/cfq-iosched.c')
0 files changed, 0 insertions, 0 deletions