From 069e7bbe4382f596232204e48a11e17ed9987ec9 Mon Sep 17 00:00:00 2001 From: John Garry Date: Mon, 20 Oct 2025 09:06:46 -0400 Subject: [PATCH] md/raid0: Handle bio_split() errors [ Upstream commit 74538fdac3e85aae55eb4ed786478ed2384cb85d ] Add proper bio_split() error handling. For any error, set bi_status, end the bio, and return. Reviewed-by: Yu Kuai Reviewed-by: Hannes Reinecke Signed-off-by: John Garry Link: https://lore.kernel.org/r/20241111112150.3756529-5-john.g.garry@oracle.com Signed-off-by: Jens Axboe Stable-dep-of: 22f166218f73 ("md: fix mssing blktrace bio split events") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid0.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 31bea72bcb01a..67ec633d27e26 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -464,6 +464,12 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio) struct bio *split = bio_split(bio, zone->zone_end - bio->bi_iter.bi_sector, GFP_NOIO, &mddev->bio_set); + + if (IS_ERR(split)) { + bio->bi_status = errno_to_blk_status(PTR_ERR(split)); + bio_endio(bio); + return; + } bio_chain(split, bio); submit_bio_noacct(bio); bio = split; @@ -606,6 +612,12 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio) if (sectors < bio_sectors(bio)) { struct bio *split = bio_split(bio, sectors, GFP_NOIO, &mddev->bio_set); + + if (IS_ERR(split)) { + bio->bi_status = errno_to_blk_status(PTR_ERR(split)); + bio_endio(bio); + return true; + } bio_chain(split, bio); raid0_map_submit_bio(mddev, bio); bio = split; -- 2.47.3