From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jeff Layton <jlayton@kernel.org>,
Ilya Dryomov <idryomov@gmail.com>,
Sasha Levin <sashal@kernel.org>,
ceph-devel@vger.kernel.org
Subject: [PATCH AUTOSEL 5.14 11/25] ceph: fix memory leak on decode error in ceph_handle_caps
Date: Mon, 13 Sep 2021 18:33:25 -0400 [thread overview]
Message-ID: <20210913223339.435347-11-sashal@kernel.org> (raw)
In-Reply-To: <20210913223339.435347-1-sashal@kernel.org>
From: Jeff Layton <jlayton@kernel.org>
[ 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@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ceph/caps.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 39db97f149b9..c2d654156783 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -4134,8 +4134,9 @@ 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:
@@ -4150,7 +4151,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
bad:
pr_err("ceph_handle_caps: corrupt message\n");
ceph_msg_dump(msg);
- return;
+ goto out;
}
/*
--
2.30.2
next parent reply other threads:[~2021-09-13 22:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210913223339.435347-1-sashal@kernel.org>
2021-09-13 22:33 ` Sasha Levin [this message]
2021-09-13 22:33 ` [PATCH AUTOSEL 5.14 12/25] ceph: request Fw caps before updating the mtime in ceph_write_iter Sasha Levin
2021-09-13 22:33 ` [PATCH AUTOSEL 5.14 13/25] ceph: remove the capsnaps when removing caps Sasha Levin
2021-09-13 22:33 ` [PATCH AUTOSEL 5.14 14/25] ceph: lockdep annotations for try_nonblocking_invalidate Sasha Levin
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