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gfs2: Fix use of bio_chain

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[ Upstream commit 8a157e0a0aa5143b5d94201508c0ca1bb8cfb941 ]

In gfs2_chain_bio(), the call to bio_chain() has its arguments swapped.
The result is leaked bios and incorrect synchronization (only the last
bio will actually be waited for).  This code is only used during mount
and filesystem thaw, so the bug normally won't be noticeable.

Reported-by: Stephen Zhang <starzhangzsd@gmail.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andreas Gruenbacher
2025-11-30 21:19:52 +00:00
committed by Greg Kroah-Hartman
parent 96a60775db
commit ab794ec9f3
1 changed files with 1 additions and 1 deletions
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2
fs/gfs2/lops.c
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@@ -492,7 +492,7 @@ static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs)
new = bio_alloc(prev->bi_bdev, nr_iovecs, prev->bi_opf, GFP_NOIO);
bio_clone_blkg_association(new, prev);
new->bi_iter.bi_sector = bio_end_sector(prev);
bio_chain(new, prev);
bio_chain(prev, new);
submit_bio(prev);
return new;
}