From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 4.9 08/14] md: raid1: check rdev before reference in raid1_sync_request func Date: Fri, 20 Dec 2019 09:46:52 -0500 Message-ID: <20191220144658.10414-8-sashal@kernel.org> References: <20191220144658.10414-1-sashal@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20191220144658.10414-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhiqiang Liu , Song Liu , Sasha Levin , linux-raid@vger.kernel.org List-Id: linux-raid.ids From: Zhiqiang Liu [ 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 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