From 34ab847d906944ecd1976ad6f49870563bb0b322 Mon Sep 17 00:00:00 2001 From: Zhiqiang Liu Date: Tue, 10 Dec 2019 10:42:25 +0800 Subject: [PATCH] md: raid1: check rdev before reference in raid1_sync_request func [ Upstream commit 028288df635f5a9addd48ac4677b720192747944 ] In raid1_sync_request func, rdev should be checked before reference. Signed-off-by: Zhiqiang Liu Signed-off-by: Song Liu Signed-off-by: Sasha Levin --- drivers/md/raid1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index f46ac9db9edb..0a9d623b13c2 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2749,7 +2749,7 @@ 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); -- 2.20.1