From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Zhiqiang Liu <liuzhiqiang26@huawei.com>,
Song Liu <songliubraving@fb.com>, Sasha Levin <sashal@kernel.org>,
linux-raid@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 27/34] md: raid1: check rdev before reference in raid1_sync_request func
Date: Fri, 20 Dec 2019 09:34:26 -0500 [thread overview]
Message-ID: <20191220143433.9922-27-sashal@kernel.org> (raw)
In-Reply-To: <20191220143433.9922-1-sashal@kernel.org>
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 6800dcd50a11b..abcb4c3a76c18 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -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);
--
2.20.1
parent reply other threads:[~2019-12-20 14:34 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20191220143433.9922-1-sashal@kernel.org>]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191220143433.9922-27-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-raid@vger.kernel.org \
--cc=liuzhiqiang26@huawei.com \
--cc=songliubraving@fb.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).