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btrfs: scrub: put bio after errors in scrub_raid56_parity_stripe()

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scrub_raid56_parity_stripe() allocates a bio with bio_alloc(), but
fails to release it on some error paths, leading to a potential
memory leak.

Add the missing bio_put() calls to properly drop the bio reference
in those error cases.

Fixes: 1009254bf2 ("btrfs: scrub: use scrub_stripe to implement RAID56 P/Q scrub")
CC: stable@vger.kernel.org # 6.6+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Zilin Guan
2025-11-05 03:53:21 +00:00
committed by David Sterba
parent bfe3d755ef
commit 5fea61aa1c
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/scrub.c
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@@ -2203,6 +2203,7 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx,
ret = btrfs_map_block(fs_info, BTRFS_MAP_WRITE, full_stripe_start,
&length, &bioc, NULL, NULL);
if (ret < 0) {
bio_put(bio);
btrfs_put_bioc(bioc);
btrfs_bio_counter_dec(fs_info);
goto out;
@@ -2212,6 +2213,7 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx,
btrfs_put_bioc(bioc);
if (!rbio) {
ret = -ENOMEM;
bio_put(bio);
btrfs_bio_counter_dec(fs_info);
goto out;
}