diff options
| author | Bart Van Assche <bart.vanassche@wdc.com> | 2018-04-10 17:02:40 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-04-10 17:46:40 -0600 |
| commit | 37f9579f4c31a6d698dbf3016d7bf132f9288d30 (patch) | |
| tree | 3b3add4672c9e0391bead53a764718e92d131983 /include | |
| parent | a93f00b3762026dd8231f473fae9346bda07db03 (diff) | |
blk-mq: Avoid that submitting a bio concurrently with device removal triggers a crash
Because blkcg_exit_queue() is now called from inside blk_cleanup_queue()
it is no longer safe to access cgroup information during or after the
blk_cleanup_queue() call. Hence protect the generic_make_request_checks()
call with blk_queue_enter() / blk_queue_exit().
Reported-by: Ming Lei <ming.lei@redhat.com>
Fixes: a063057d7c73 ("block: Fix a race between request queue removal and the block cgroup controller")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions