From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Date: Thu, 8 Aug 2019 07:39:34 -0700
Subject: ice: Check root pointer for validity
Patch-mainline: v5.4-rc1
Git-commit: ade78c2ec1def21bdaa597d4d01a7d6b9343fa60
References: jsc#SLE-7926
ice_sched_get_tc_node uses pi->root without checking for NULL. Add a
check to prevent NULL pointer dereference.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/ice/ice_sched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/intel/ice/ice_sched.c
+++ b/drivers/net/ethernet/intel/ice/ice_sched.c
@@ -284,7 +284,7 @@ struct ice_sched_node *ice_sched_get_tc_
{
u8 i;
- if (!pi)
+ if (!pi || !pi->root)
return NULL;
for (i = 0; i < pi->root->num_children; i++)
if (pi->root->children[i]->tc_num == tc)