md: raid1: check rdev before reference in raid1_sync_request func
[ Upstream commit 028288df63
]
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>
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@ -2781,7 +2781,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
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write_targets++;
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}
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}
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if (bio->bi_end_io) {
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if (rdev && bio->bi_end_io) {
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atomic_inc(&rdev->nr_pending);
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bio->bi_iter.bi_sector = sector_nr + rdev->data_offset;
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bio_set_dev(bio, rdev->bdev);
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