Omar Sandoval bdac616db9 loop: fix LOOP_GET_STATUS lock imbalance
Commit 2d1d4c1e591f made loop_get_status() drop lo_ctx_mutex before
returning, but the loop_get_status_old(), loop_get_status64(), and
loop_get_status_compat() wrappers don't call loop_get_status() if the
passed argument is NULL. The callers expect that the lock is dropped, so
make sure we drop it in that case, too.

Reported-by: syzbot+31e8daa8b3fc129e75f2@syzkaller.appspotmail.com
Fixes: 2d1d4c1e591f ("loop: don't call into filesystem while holding lo_ctl_mutex")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-04-10 08:38:46 -06:00
..
2018-01-17 08:41:07 -07:00
2018-02-06 09:59:40 -08:00
2017-09-26 07:41:22 -06:00
2018-03-01 08:41:27 -07:00
2017-02-20 12:16:15 +01:00
2017-08-18 08:45:29 -06:00
2018-04-05 14:27:02 -07:00