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| author | Coly Li <colyli@suse.de> | 2019-06-28 19:59:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-26 09:14:21 +0200 |
| commit | f11ba9df8eed1abce9c5d7306711e32b657694eb (patch) | |
| tree | 85ea31588d9f7c625a2318cccc5f31d4d19caa84 /drivers/md | |
| parent | 2ab14861d2eb33b8471c73a8089d1a64e846d289 (diff) | |
| download | linux-stable-f11ba9df8eed1abce9c5d7306711e32b657694eb.tar.gz linux-stable-f11ba9df8eed1abce9c5d7306711e32b657694eb.tar.bz2 linux-stable-f11ba9df8eed1abce9c5d7306711e32b657694eb.zip | |
bcache: destroy dc->writeback_write_wq if failed to create dc->writeback_thread
commit f54d801dda14942dbefa00541d10603015b7859c upstream.
Commit 9baf30972b55 ("bcache: fix for gc and write-back race") added a
new work queue dc->writeback_write_wq, but forgot to destroy it in the
error condition when creating dc->writeback_thread failed.
This patch destroys dc->writeback_write_wq if kthread_create() returns
error pointer to dc->writeback_thread, then a memory leak is avoided.
Fixes: 9baf30972b55 ("bcache: fix for gc and write-back race")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bcache/writeback.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 6e72bb6c00f2..ba5395fd386d 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -807,6 +807,7 @@ int bch_cached_dev_writeback_start(struct cached_dev *dc) "bcache_writeback"); if (IS_ERR(dc->writeback_thread)) { cached_dev_put(dc); + destroy_workqueue(dc->writeback_write_wq); return PTR_ERR(dc->writeback_thread); } |