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ocfs2: fix double free in user_cluster_connect()

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[ Upstream commit 8f45f089337d924db24397f55697cda0e6960516 ]

user_cluster_disconnect() frees "conn->cc_private" which is "lc" but then
the error handling frees "lc" a second time.  Set "lc" to NULL on this
path to avoid a double free.

Link: https://lkml.kernel.org/r/aNKDz_7JF7aycZ0k@stanley.mountain
Fixes: c994c2ebdb ("ocfs2: use the new DLM operation callbacks while requesting new lockspace")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2025-09-23 14:26:07 +03:00 committed by Greg Kroah-Hartman
parent eec7e0e19c
commit bfe011297d
1 changed files with 1 additions and 0 deletions
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1
fs/ocfs2/stack_user.c
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@ -1024,6 +1024,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
printk(KERN_ERR "ocfs2: Could not determine"
" locking version\n");
user_cluster_disconnect(conn);
lc = NULL;
goto out;
}
wait_event(lc->oc_wait, (atomic_read(&lc->oc_this_node) > 0));