| commit | 08fc1ab6d748ab1a690fd483f41e2938984ce353 | [log] [tgz] |
|---|---|---|
| author | Christoph Hellwig <hch@lst.de> | Tue Sep 01 11:59:41 2020 +0200 |
| committer | Jens Axboe <axboe@kernel.dk> | Tue Sep 01 08:35:35 2020 -0600 |
| tree | 7e141849aad3fc830215030bb9cf0cbe081a80f1 | |
| parent | cafe01ef8fcb248583038e1be071383530fe355a [diff] |
block: fix locking in bdev_del_partition
We need to hold the whole device bd_mutex to protect against
other thread concurrently deleting out partition before we get
to it, and thus causing a use after free.
Fixes: cddae808aeb7 ("block: pass a hd_struct to delete_partition")
Reported-by: syzbot+6448f3c229bc52b82f69@syzkaller.appspotmail.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>