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| author |  Jan Kara <jack@suse.cz>
| 2017-03-08 17:48:33 +0100 |
|---|---|---|
| committer |  Jens Axboe <axboe@fb.com>
| 2017-03-08 10:55:17 -0700 |
| commit | 90f16fddcc2802726142b8386c65ccb89f044613 (patch) | |
| tree | da1c8d56ab62dd362dc94fab542ba43a5144f67d /include | |
| parent | bdi: Fix use-after-free in wb_congested_put() (diff) | |
| download | linux-90f16fddcc2802726142b8386c65ccb89f044613.tar.gz linux-90f16fddcc2802726142b8386c65ccb89f044613.tar.bz2 linux-90f16fddcc2802726142b8386c65ccb89f044613.zip | |
block: Make del_gendisk() safer for disks without queues
Commit 165a5e22fafb "block: Move bdi_unregister() to del_gendisk()"
added disk->queue dereference to del_gendisk(). Although del_gendisk()
is not supposed to be called without disk->queue valid and
blk_unregister_queue() warns in that case, this change will make it oops
instead. Return to the old more robust behavior of just warning when
del_gendisk() gets called for gendisk with disk->queue being NULL.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Tested-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions