Commit ec322d98 authored Dec 10, 2019 by Zhiqiang Liu Committed by Greg Kroah-Hartman Jan 09, 2020

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 <liuzhiqiang26@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 281c1b30

drivers/md/raid1.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2756,7 +2756,7 @@ 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);