diff mbox series

[5.4,044/191] md: raid1: check rdev before reference in raid1_sync_request func

Message ID 20200107205335.350334571@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Jan. 7, 2020, 8:52 p.m. UTC 
From: Zhiqiang Liu <liuzhiqiang26@huawei.com>

[ Upstream commit 028288df635f5a9addd48ac4677b720192747944 ]

In raid1_sync_request func, rdev should be checked before reference.

Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/md/raid1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index bb29aeefcbd0..c7137f50bd1d 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2781,7 +2781,7 @@  static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
 				write_targets++;
 			}
 		}
-		if (bio->bi_end_io) {
+		if (rdev && bio->bi_end_io) {
 			atomic_inc(&rdev->nr_pending);
 			bio->bi_iter.bi_sector = sector_nr + rdev->data_offset;
 			bio_set_dev(bio, rdev->bdev);