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| author | Omar Sandoval <osandov@fb.com> | 2018-04-06 09:57:03 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-04-10 08:38:46 -0600 |
| commit | bdac616db9bbadb90b7d6a406144571015e138f7 (patch) | |
| tree | d883f14fdc2dc308c13aae0cf80042deec2ffd6b /kernel/sysctl_binary.c | |
| parent | 1e047eaab3bb5564f25b41e9cd3a053009f4e789 (diff) | |
| download | talos-obmc-linux-bdac616db9bbadb90b7d6a406144571015e138f7.tar.gz talos-obmc-linux-bdac616db9bbadb90b7d6a406144571015e138f7.zip | |
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>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions
