4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aditya Pakki <pakki...@umn.edu>
commit e406f12dde1a8375d77ea02d91f313fb1a9c6aec upstream.
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: sta...@vger.kernel.org # v3.16+
Acked-by: Guoqing Jiang <gqji...@suse.com>
Signed-off-by: Aditya Pakki <pakki...@umn.edu>
Signed-off-by: Song Liu <songliubrav...@fb.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/md/raid10.c | 2 ++
drivers/md/raid5.c | 2 ++
2 files changed, 4 insertions(+)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3821,6 +3821,8 @@ static int raid10_run(struct mddev *mdde
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto out_free_conf;
}
return 0;
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7370,6 +7370,8 @@ static int raid5_run(struct mddev *mddev
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto abort;
}
/* Ok, everything is just fine now */
