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authorMd Haris Iqbal <haris.iqbal@ionos.com>2024-08-21 14:22:12 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-10-04 17:29:31 +0300
commit01b9be936ee8839ab9f83a7e84ee02ac6c8303c4 (patch)
tree00e528a595f3d480321b19ca8d71537d57b1a61b
parenteffc10f00cf85fed8b96b89a57b252fc3ac7236c (diff)
downloadlinux-01b9be936ee8839ab9f83a7e84ee02ac6c8303c4.tar.xz
RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
[ 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@ionos.com> Signed-off-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@ionos.com> Link: https://patch.msgid.link/20240821112217.41827-7-haris.iqbal@ionos.com Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-clt.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 75d3a27dea9a..82aa47efb807 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -2342,6 +2342,12 @@ 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;