| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 044/191] md: raid1: check rdev before reference in raid1_sync_request func | Date | Tue, 7 Jan 2020 21:52:44 +0100 |
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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 --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); -- 2.20.1
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