From cdfa0dc1702bcfe6c403d3cfe4046b29c8e6c5b9 Mon Sep 17 00:00:00 2001 From: Qi Zhang Date: Mon, 23 Mar 2020 15:17:24 +0800 Subject: [PATCH] net/ice/base: fix uninitialized stack variables Via code inspection, I found that some partially initialized stack variables were being passed along to called functions, which could eventually result in those uninitialized members being used. To fix this, make sure the local variables are zeroed out before partially initializing them. This should prevent any unintended consequences from using stack memory that might have junk in it. In addition to the memsets, this patch also initializes one member in one function, that needed to be initialized to non-zero. Fixes: fed0c5ca5f19 ("net/ice/base: support programming a new switch recipe") Cc: stable@dpdk.org Signed-off-by: Jesse Brandeburg Signed-off-by: Paul M Stillwell Jr Signed-off-by: Qi Zhang Acked-by: Qiming Yang --- drivers/net/ice/base/ice_switch.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ice/base/ice_switch.c b/drivers/net/ice/base/ice_switch.c index 085f344064..e88d0f7fe7 100644 --- a/drivers/net/ice/base/ice_switch.c +++ b/drivers/net/ice/base/ice_switch.c @@ -6227,9 +6227,12 @@ ice_adv_add_update_vsi_list(struct ice_hw *hw, if (status) return status; + ice_memset(&tmp_fltr, 0, sizeof(tmp_fltr), ICE_NONDMA_MEM); tmp_fltr.fltr_rule_id = cur_fltr->fltr_rule_id; tmp_fltr.fltr_act = ICE_FWD_TO_VSI_LIST; tmp_fltr.fwd_id.vsi_list_id = vsi_list_id; + tmp_fltr.lkup_type = ICE_SW_LKUP_LAST; + /* Update the previous switch rule of "forward to VSI" to * "fwd to VSI list" */ @@ -6473,6 +6476,7 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, if (rinfo->sw_act.fltr_act == ICE_FWD_TO_VSI) { struct ice_fltr_info tmp_fltr; + ice_memset(&tmp_fltr, 0, sizeof(tmp_fltr), ICE_NONDMA_MEM); tmp_fltr.fltr_rule_id = LE16_TO_CPU(s_rule->pdata.lkup_tx_rx.index); tmp_fltr.fltr_act = ICE_FWD_TO_VSI; @@ -6557,6 +6561,8 @@ ice_adv_rem_update_vsi_list(struct ice_hw *hw, u16 vsi_handle, lkup_type); if (status) return status; + + ice_memset(&tmp_fltr, 0, sizeof(tmp_fltr), ICE_NONDMA_MEM); tmp_fltr.fltr_rule_id = fm_list->rule_info.fltr_rule_id; fm_list->rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; tmp_fltr.fltr_act = ICE_FWD_TO_VSI; -- 2.20.1