This is a note to let you know that I've just added the patch titled
ceph: fix memory leak on decode error in ceph_handle_caps
to the 5.14-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:
ceph-fix-memory-leak-on-decode-error-in-ceph_handle_.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8436443095d1d8e0500bd6a54461d37329237021
Author: Jeff Layton <jlayton@xxxxxxxxxx>
Date: Thu Jul 1 10:41:46 2021 -0400
ceph: fix memory leak on decode error in ceph_handle_caps
[ Upstream commit 2ad32cf09bd28a21e6ad1595355a023ed631b529 ]
If we hit a decoding error late in the frame, then we might exit the
function without putting the pool_ns string. Ensure that we always put
that reference on the way out of the function.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index ba562efdf07b..1f3d67133958 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -4137,8 +4137,9 @@ void ceph_handle_caps(struct ceph_mds_session *session,
done:
mutex_unlock(&session->s_mutex);
done_unlocked:
- ceph_put_string(extra_info.pool_ns);
iput(inode);
+out:
+ ceph_put_string(extra_info.pool_ns);
return;
flush_cap_releases:
@@ -4153,7 +4154,7 @@ flush_cap_releases:
bad:
pr_err("ceph_handle_caps: corrupt message\n");
ceph_msg_dump(msg);
- return;
+ goto out;
}
/*
