5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Md Haris Iqbal <haris.iqbal@xxxxxxxxx>
[ Upstream commit 3e4289b29e216a55d08a89e126bc0b37cbad9f38 ]
In the function init_conns(), after the create_con() and create_cm() for
loop if something fails. In the cleanup for loop after the destroy tag, we
access out of bound memory because cid is set to clt_path->s.con_num.
This commits resets the cid to clt_path->s.con_num - 1, to stay in bounds
in the cleanup loop later.
Fixes: 6a98d71daea1 ("RDMA/rtrs: client: main functionality")
Signed-off-by: Md Haris Iqbal <haris.iqbal@xxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxx>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@xxxxxxxxx>
Link: https://patch.msgid.link/20240821112217.41827-7-haris.iqbal@xxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/infiniband/ulp/rtrs/rtrs-clt.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 8f496c88bfe7e..e8f5a1f104cfa 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -2338,6 +2338,12 @@ static int init_conns(struct rtrs_clt_path *clt_path)
if (err)
goto destroy;
}
+
+ /*
+ * Set the cid to con_num - 1, since if we fail later, we want to stay in bounds.
+ */
+ cid = clt_path->s.con_num - 1;
+
err = alloc_path_reqs(clt_path);
if (err)
goto destroy;
--
2.43.0
