This is a note to let you know that I've just added the patch titled
RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
to the 6.10-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:
rdma-rtrs-clt-reset-cid-to-con_num-1-to-stay-in-boun.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9b01e810bbc287218c417b0a260ac93563559259
Author: Md Haris Iqbal <haris.iqbal@xxxxxxxxx>
Date: Wed Aug 21 13:22:12 2024 +0200
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@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>
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 9936a3354b478..84d2dfcd20af6 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -2347,6 +2347,12 @@ 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;
