This is a note to let you know that I've just added the patch titled
dm btree: fix leak of bufio-backed block in btree_split_sibling error path
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dm-btree-fix-leak-of-bufio-backed-block-in-btree_split_sibling-error-path.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 30ce6e1cc5a0f781d60227e9096c86e188d2c2bd Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@xxxxxxxxxx>
Date: Mon, 23 Nov 2015 16:24:45 -0500
Subject: dm btree: fix leak of bufio-backed block in btree_split_sibling error path
From: Mike Snitzer <snitzer@xxxxxxxxxx>
commit 30ce6e1cc5a0f781d60227e9096c86e188d2c2bd upstream.
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@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/persistent-data/dm-btree.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/md/persistent-data/dm-btree.c
+++ b/drivers/md/persistent-data/dm-btree.c
@@ -471,8 +471,10 @@ static int btree_split_sibling(struct sh
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);
Patches currently in stable-queue which might be from snitzer@xxxxxxxxxx are
queue-3.14/dm-btree-fix-leak-of-bufio-backed-block-in-btree_split_sibling-error-path.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html