From 949375de945f7042df2b6488228a1a2b36e69f35 Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Fri, 8 Nov 2019 06:23:21 -0800 Subject: ice: fix stack leakage In the case of an invalid virtchannel request the driver would return uninitialized data to the VF from the PF stack which is a bug. Fix by initializing the stack variable earlier in the function before any return paths can be taken. Fixes: 1071a8358a28 ("ice: Implement virtchnl commands for AVF support") Signed-off-by: Jesse Brandeburg Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/net/ethernet/intel') diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c index fd419230a6c0..f8d26674cf5a 100644 --- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c @@ -1886,8 +1886,8 @@ static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg) enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; struct virtchnl_queue_select *vqs = (struct virtchnl_queue_select *)msg; + struct ice_eth_stats stats = { 0 }; struct ice_pf *pf = vf->pf; - struct ice_eth_stats stats; struct ice_vsi *vsi; if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { @@ -1906,7 +1906,6 @@ static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg) goto error_param; } - memset(&stats, 0, sizeof(struct ice_eth_stats)); ice_update_eth_stats(vsi); stats = vsi->eth_stats; -- cgit v1.2.3-59-g8ed1b