[3.19.y-ckt stable] Patch "dm btree: fix leak of bufio-backed block in btree_split_beneath error path" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Thu Nov 12 23:14:52 UTC 2015
This is a note to let you know that I have just added a patch titled
dm btree: fix leak of bufio-backed block in btree_split_beneath error path
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt10.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From c4bbbba6b6bb4d3d3335d86106d5072232df642c Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer at redhat.com>
Date: Thu, 22 Oct 2015 10:56:40 -0400
Subject: [PATCH 097/120] dm btree: fix leak of bufio-backed block in
btree_split_beneath error path
commit 4dcb8b57df3593dcb20481d9d6cf79d1dc1534be upstream.
btree_split_beneath()'s error path had an outstanding FIXME that speaks
directly to the potential for _not_ cleaning up a previously allocated
bufio-backed block.
Fix this by releasing the previously allocated bufio block using
unlock_block().
Reported-by: Mikulas Patocka <mpatocka at redhat.com>
Signed-off-by: Mike Snitzer <snitzer at redhat.com>
Acked-by: Joe Thornber <thornber at redhat.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
drivers/md/persistent-data/dm-btree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
index c7726ce..d6e4703 100644
--- a/drivers/md/persistent-data/dm-btree.c
+++ b/drivers/md/persistent-data/dm-btree.c
@@ -523,7 +523,7 @@ static int btree_split_beneath(struct shadow_spine *s, uint64_t key)
r = new_block(s->info, &right);
if (r < 0) {
- /* FIXME: put left */
+ unlock_block(s->info, left);
return r;
}
--
1.9.1
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