| From ece515bb9f9448b67773599eb6c0700588b373ee Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Fri, 20 Feb 2026 17:21:26 -0500 |
| Subject: RDMA/ionic: Fix potential NULL pointer dereference in |
| ionic_query_port |
| |
| From: Kamal Heib <kheib@redhat.com> |
| |
| [ Upstream commit fd80bd7105f88189f47d465ca8cb7d115570de30 ] |
| |
| The function ionic_query_port() calls ib_device_get_netdev() without |
| checking the return value which could lead to NULL pointer dereference, |
| Fix it by checking the return value and return -ENODEV if the 'ndev' is |
| NULL. |
| |
| Fixes: 2075bbe8ef03 ("RDMA/ionic: Register device ops for miscellaneous functionality") |
| Signed-off-by: Kamal Heib <kheib@redhat.com> |
| Link: https://patch.msgid.link/20260220222125.16973-2-kheib@redhat.com |
| Signed-off-by: Leon Romanovsky <leon@kernel.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/infiniband/hw/ionic/ionic_ibdev.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c |
| index 164046d00e5d4..bd4c73e530d08 100644 |
| --- a/drivers/infiniband/hw/ionic/ionic_ibdev.c |
| +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c |
| @@ -81,6 +81,8 @@ static int ionic_query_port(struct ib_device *ibdev, u32 port, |
| return -EINVAL; |
| |
| ndev = ib_device_get_netdev(ibdev, port); |
| + if (!ndev) |
| + return -ENODEV; |
| |
| if (netif_running(ndev) && netif_carrier_ok(ndev)) { |
| attr->state = IB_PORT_ACTIVE; |
| -- |
| 2.51.0 |
| |
