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Mon, 28 Oct 2024 15:27:51 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088%5]) with mapi id 15.20.8093.024; Mon, 28 Oct 2024 15:27:51 +0000 From: John Garry To: axboe@kernel.dk, song@kernel.org, yukuai3@huawei.com, hch@lst.de Cc: martin.petersen@oracle.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, hare@suse.de, Johannes.Thumshirn@wdc.com, John Garry Subject: [PATCH v2 4/7] block: Handle bio_split() errors in bio_submit_split() Date: Mon, 28 Oct 2024 15:27:27 +0000 Message-Id: <20241028152730.3377030-5-john.g.garry@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20241028152730.3377030-1-john.g.garry@oracle.com> References: <20241028152730.3377030-1-john.g.garry@oracle.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BYAPR03CA0018.namprd03.prod.outlook.com (2603:10b6:a02:a8::31) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|DM6PR10MB4170:EE_ X-MS-Office365-Filtering-Correlation-Id: 9dc59dbd-edc4-4124-042b-08dcf76515d4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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charset="utf-8" bio_split() may error, so check this. Signed-off-by: John Garry Reviewed-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/blk-merge.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index 1c73fd37cbee..b640477c190d 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -107,11 +107,8 @@ static unsigned int bio_allowed_max_sectors(const stru= ct queue_limits *lim) =20 static struct bio *bio_submit_split(struct bio *bio, int split_sectors) { - if (unlikely(split_sectors < 0)) { - bio->bi_status =3D errno_to_blk_status(split_sectors); - bio_endio(bio); - return NULL; - } + if (unlikely(split_sectors < 0)) + goto error; =20 =20 if (unlikely((bio_op(bio) =3D=3D REQ_OP_DISCARD))) @@ -123,6 +120,10 @@ static struct bio *bio_submit_split(struct bio *bio, i= nt split_sectors) =20 split =3D bio_split(bio, split_sectors, GFP_NOIO, &bio->bi_bdev->bd_disk->bio_split); + if (IS_ERR(split)) { + split_sectors =3D PTR_ERR(split); + goto error; + } split->bi_opf |=3D REQ_NOMERGE; blkcg_bio_issue_init(split); bio_chain(split, bio); @@ -133,6 +134,10 @@ static struct bio *bio_submit_split(struct bio *bio, i= nt split_sectors) } =20 return bio; +error: + bio->bi_status =3D errno_to_blk_status(split_sectors); + bio_endio(bio); + return NULL; } =20 struct bio *bio_split_discard(struct bio *bio, const struct queue_limits *= lim, --=20 2.31.1