This is a note to let you know that I've just added the patch titled
RDMA/irdma: Fix potential NULL-ptr-dereference
to the 6.1-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-irdma-fix-potential-null-ptr-dereference.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fb1e5b523e0b9323b5a54abe69689cd319ca29b3
Author: Nikita Zhandarovich <n.zhandarovich@xxxxxxxxxx>
Date: Thu Jan 26 10:52:30 2023 -0800
RDMA/irdma: Fix potential NULL-ptr-dereference
[ Upstream commit 5d9745cead1f121974322b94ceadfb4d1e67960e ]
in_dev_get() can return NULL which will cause a failure once idev is
dereferenced in in_dev_for_each_ifa_rtnl(). This patch adds a
check for NULL value in idev beforehand.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 146b9756f14c ("RDMA/irdma: Add connection manager")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230126185230.62464-1-n.zhandarovich@xxxxxxxxxx
Reviewed-by: Sindhu Devale <sindhu.devale@xxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/irdma/cm.c b/drivers/infiniband/hw/irdma/cm.c
index 7b086fe63a245..195aa9ea18b6c 100644
--- a/drivers/infiniband/hw/irdma/cm.c
+++ b/drivers/infiniband/hw/irdma/cm.c
@@ -1722,6 +1722,9 @@ static int irdma_add_mqh_4(struct irdma_device *iwdev,
continue;
idev = in_dev_get(ip_dev);
+ if (!idev)
+ continue;
+
in_dev_for_each_ifa_rtnl(ifa, idev) {
ibdev_dbg(&iwdev->ibdev,
"CM: Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
