From: Shannon Nelson shannon.nelson@amd.com
commit 4a54903ff68ddb33b6463c94b4eb37fc584ef760 upstream.
Add a check for NULL on the alloc return. If devlink_alloc() fails and we try to use devlink_priv() on the NULL return, the kernel gets very unhappy and panics. With this fix, the driver load will still fail, but at least it won't panic the kernel.
Fixes: df69ba43217d ("ionic: Add basic framework for IONIC Network device driver") Signed-off-by: Shannon Nelson shannon.nelson@amd.com Reviewed-by: Simon Horman simon.horman@corigine.com Reviewed-by: Jiri Pirko jiri@nvidia.com Signed-off-by: David S. Miller davem@davemloft.net [ kovalev: bp to fix CVE-2023-53470 ] Signed-off-by: Vasiliy Kovalev kovalev@altlinux.org --- drivers/net/ethernet/pensando/ionic/ionic_devlink.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c index 3d94064c685d..52ebecf2521e 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c @@ -65,6 +65,8 @@ struct ionic *ionic_devlink_alloc(struct device *dev) struct devlink *dl;
dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic)); + if (!dl) + return NULL;
return devlink_priv(dl); }