From a705a78281cad4665e4092a09f8c485e81b47882 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 17 Apr 2023 11:41:25 +0300 Subject: [PATCH] wifi: iwlwifi: mvm: fix iwl_mvm_sta_rc_update for MLO When this is called it might crash due to the use of deflink's phy context, update all links instead. It really shouldn't be called right now though, but it's better to have safer code until we update this to be with a link parameter. Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230417113648.fd47d0de8319.I87c5e5bcb2fadd70acc32021eed394fc1eea12a4@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index b086229f339dd..9d5d2c6625a91 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -3585,9 +3585,9 @@ static void iwl_mvm_rs_rate_init_all_links(struct iwl_mvm *mvm, for_each_mvm_vif_valid_link(mvmvif, link_id) { struct ieee80211_bss_conf *conf = - link_conf_dereference_protected(vif, link_id); + link_conf_dereference_check(vif, link_id); struct ieee80211_link_sta *link_sta = - link_sta_dereference_protected(sta, link_id); + link_sta_dereference_check(sta, link_id); if (!conf || !link_sta || !mvmvif->link[link_id]->phy_ctxt) continue; @@ -3983,15 +3983,11 @@ void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u32 changed) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); if (changed & (IEEE80211_RC_BW_CHANGED | IEEE80211_RC_SUPP_RATES_CHANGED | IEEE80211_RC_NSS_CHANGED)) - iwl_mvm_rs_rate_init(mvm, sta, - &vif->bss_conf, &sta->deflink, - mvmvif->deflink.phy_ctxt->channel->band, - true); + iwl_mvm_rs_rate_init_all_links(mvm, vif, sta, true); if (vif->type == NL80211_IFTYPE_STATION && changed & IEEE80211_RC_NSS_CHANGED) -- 2.30.2