linux-kernel - [PATCH RFC 5/6] md/raid1: Handle bio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240919092302.3094725-6-john.g.garry@oracle.com>
Date: Thu, 19 Sep 2024 09:23:01 +0000
From: John Garry <john.g.garry@...cle.com>
To: axboe@...nel.dk, hch@....de
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-raid@...r.kernel.org, martin.petersen@...cle.com,
        John Garry <john.g.garry@...cle.com>
Subject: [PATCH RFC 5/6] md/raid1: Handle bio_split() errors

Add proper bio_split() error handling. For any error, call
raid_end_bio_io() and return;

Signed-off-by: John Garry <john.g.garry@...cle.com>
---
 drivers/md/raid1.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 6c9d24203f39..c561e2d185e2 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1383,6 +1383,10 @@ static void raid1_read_request(struct mddev *mddev, struct bio *bio,
 	if (max_sectors < bio_sectors(bio)) {
 		struct bio *split = bio_split(bio, max_sectors,
 					      gfp, &conf->bio_split);
+		if (IS_ERR(split)) {
+			raid_end_bio_io(r1_bio);
+			return;
+		}
 		bio_chain(split, bio);
 		submit_bio_noacct(bio);
 		bio = split;
@@ -1576,6 +1580,10 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
 	if (max_sectors < bio_sectors(bio)) {
 		struct bio *split = bio_split(bio, max_sectors,
 					      GFP_NOIO, &conf->bio_split);
+		if (IS_ERR(split)) {
+			raid_end_bio_io(r1_bio);
+			return;
+		}
 		bio_chain(split, bio);
 		submit_bio_noacct(bio);
 		bio = split;
-- 
2.31.1