* [PATCH AUTOSEL 4.9 08/14] md: raid1: check rdev before reference in raid1_sync_request func
[not found] <20191220144658.10414-1-sashal@kernel.org>
@ 2019-12-20 14:46 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-12-20 14:46 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: Zhiqiang Liu, Song Liu, Sasha Levin, linux-raid
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 9892c41de4419..8a50da4f148f9 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2633,7 +2633,7 @@ 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->bi_bdev = rdev->bdev;
--
2.20.1
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2019-12-20 14:46 ` [PATCH AUTOSEL 4.9 08/14] md: raid1: check rdev before reference in raid1_sync_request func Sasha Levin
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