Commit 7f053a6a authored by Shaohua Li's avatar Shaohua Li
Browse files

MD: fix a null dereference 



rdev->mddev could be null in start time.

Reported-by: default avatarMing Lei <ming.lei@redhat.com>
Fix: 5a85071c(md: use a separate bio_set for synchronous IO.)
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent 5a85071c

drivers/md/md.c

+1 −1
Original line number Diff line number Diff line
@@ -205,7 +205,7 @@ EXPORT_SYMBOL_GPL(bio_alloc_mddev); 


static struct bio *md_bio_alloc_sync(struct mddev *mddev)

{

	if (!mddev->sync_set)

	if (!mddev || !mddev->sync_set)

		return bio_alloc(GFP_NOIO, 1);



	return bio_alloc_bioset(GFP_NOIO, 1, mddev->sync_set);