md: Fix failed allocation of md_register_thread
authorAditya Pakki <pakki001@umn.edu>
Mon, 4 Mar 2019 22:48:54 +0000 (16:48 -0600)
committerSong Liu <songliubraving@fb.com>
Tue, 12 Mar 2019 17:15:18 +0000 (10:15 -0700)
commite406f12dde1a8375d77ea02d91f313fb1a9c6aec
treeb11f0208ee191c21233ebc8a6c318d35daae1f5e
parentb761dcf1217760a42f7897c31dcb649f59b2333e
md: Fix failed allocation of md_register_thread

mddev->sync_thread can be set to NULL on kzalloc failure downstream.
The patch checks for such a scenario and frees allocated resources.

Committer node:

Added similar fix to raid5.c, as suggested by Guoqing.

Cc: stable@vger.kernel.org # v3.16+
Acked-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Song Liu <songliubraving@fb.com>
drivers/md/raid10.c
drivers/md/raid5.c