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| author | Mike Snitzer <snitzer@redhat.com> | 2015-11-23 22:24:45 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-12-02 19:20:34 +0100 |
| commit | 30ce6e1cc5a0f781d60227e9096c86e188d2c2bd (patch) | |
| tree | 4d1217d25ff2d2e6db70e11a04ce52f82a781cb8 /drivers | |
| parent | Linux 4.4-rc3 (diff) | |
| download | linux-30ce6e1cc5a0f781d60227e9096c86e188d2c2bd.tar.xz linux-30ce6e1cc5a0f781d60227e9096c86e188d2c2bd.zip | |
dm btree: fix leak of bufio-backed block in btree_split_sibling error path
The block allocated at the start of btree_split_sibling() is never
released if later insert_at() fails.
Fix this by releasing the previously allocated bufio block using
unlock_block().
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/persistent-data/dm-btree.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c index c573402033b2..0918a7c5f809 100644 --- a/drivers/md/persistent-data/dm-btree.c +++ b/drivers/md/persistent-data/dm-btree.c @@ -473,8 +473,10 @@ static int btree_split_sibling(struct shadow_spine *s, unsigned parent_index, r = insert_at(sizeof(__le64), pn, parent_index + 1, le64_to_cpu(rn->keys[0]), &location); - if (r) + if (r) { + unlock_block(s->info, right); return r; + } if (key < le64_to_cpu(rn->keys[0])) { unlock_block(s->info, right); |