Merge tag 'mac80211-for-davem-2018-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Here are quite a large number of fixes, notably:
 * various A-MSDU building fixes (currently only affects mt76)
 * syzkaller & spectre fixes in hwsim
 * TXQ vs. teardown fix that was causing crashes
 * embed WMM info in reg rule, bad code here had been causing crashes
 * one compilation issue with fix from Arnd (rfkill-gpio includes)
 * fixes for a race and bad data during/after channel switch
 * nl80211: a validation fix, attribute type & unit fixes
along with other small fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 14 insertions, 48 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index b4c3a957c102..73969dbeb5c5 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -985,15 +985,12 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 	const u8 *nvm_chan = cfg->nvm_type == IWL_NVM_EXT ?
 			     iwl_ext_nvm_channels : iwl_nvm_channels;
 	struct ieee80211_regdomain *regd, *copy_rd;
-	int size_of_regd, regd_to_copy, wmms_to_copy;
-	int size_of_wmms = 0;
+	int size_of_regd, regd_to_copy;
 	struct ieee80211_reg_rule *rule;
-	struct ieee80211_wmm_rule *wmm_rule, *d_wmm, *s_wmm;
 	struct regdb_ptrs *regdb_ptrs;
 	enum nl80211_band band;
 	int center_freq, prev_center_freq = 0;
-	int valid_rules = 0, n_wmms = 0;
-	int i;
+	int valid_rules = 0;
 	bool new_rule;
 	int max_num_ch = cfg->nvm_type == IWL_NVM_EXT ?
 			 IWL_NVM_NUM_CHANNELS_EXT : IWL_NVM_NUM_CHANNELS;
@@ -1012,11 +1009,7 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 		sizeof(struct ieee80211_regdomain) +
 		num_of_ch * sizeof(struct ieee80211_reg_rule);
 
-	if (geo_info & GEO_WMM_ETSI_5GHZ_INFO)
-		size_of_wmms =
-			num_of_ch * sizeof(struct ieee80211_wmm_rule);
-
-	regd = kzalloc(size_of_regd + size_of_wmms, GFP_KERNEL);
+	regd = kzalloc(size_of_regd, GFP_KERNEL);
 	if (!regd)
 		return ERR_PTR(-ENOMEM);
 
@@ -1030,8 +1023,6 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 	regd->alpha2[0] = fw_mcc >> 8;
 	regd->alpha2[1] = fw_mcc & 0xff;
 
-	wmm_rule = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd);
-
 	for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
 		ch_flags = (u16)__le32_to_cpup(channels + ch_idx);
 		band = (ch_idx < NUM_2GHZ_CHANNELS) ?
@@ -1085,26 +1076,10 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 		    band == NL80211_BAND_2GHZ)
 			continue;
 
-		if (!reg_query_regdb_wmm(regd->alpha2, center_freq,
-					 &regdb_ptrs[n_wmms].token, wmm_rule)) {
-			/* Add only new rules */
-			for (i = 0; i < n_wmms; i++) {
-				if (regdb_ptrs[i].token ==
-				    regdb_ptrs[n_wmms].token) {
-					rule->wmm_rule = regdb_ptrs[i].rule;
-					break;
-				}
-			}
-			if (i == n_wmms) {
-				rule->wmm_rule = wmm_rule;
-				regdb_ptrs[n_wmms++].rule = wmm_rule;
-				wmm_rule++;
-			}
-		}
+		reg_query_regdb_wmm(regd->alpha2, center_freq, rule);
 	}
 
 	regd->n_reg_rules = valid_rules;
-	regd->n_wmm_rules = n_wmms;
 
 	/*
 	 * Narrow down regdom for unused regulatory rules to prevent hole
@@ -1113,28 +1088,13 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 	regd_to_copy = sizeof(struct ieee80211_regdomain) +
 		valid_rules * sizeof(struct ieee80211_reg_rule);
 
-	wmms_to_copy = sizeof(struct ieee80211_wmm_rule) * n_wmms;
-
-	copy_rd = kzalloc(regd_to_copy + wmms_to_copy, GFP_KERNEL);
+	copy_rd = kzalloc(regd_to_copy, GFP_KERNEL);
 	if (!copy_rd) {
 		copy_rd = ERR_PTR(-ENOMEM);
 		goto out;
 	}
 
 	memcpy(copy_rd, regd, regd_to_copy);
-	memcpy((u8 *)copy_rd + regd_to_copy, (u8 *)regd + size_of_regd,
-	       wmms_to_copy);
-
-	d_wmm = (struct ieee80211_wmm_rule *)((u8 *)copy_rd + regd_to_copy);
-	s_wmm = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd);
-
-	for (i = 0; i < regd->n_reg_rules; i++) {
-		if (!regd->reg_rules[i].wmm_rule)
-			continue;
-
-		copy_rd->reg_rules[i].wmm_rule = d_wmm +
-			(regd->reg_rules[i].wmm_rule - s_wmm);
-	}
 
 out:
 	kfree(regdb_ptrs);
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 998dfac0fcff..1068757ec42e 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -34,6 +34,7 @@
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 #include <linux/rhashtable.h>
+#include <linux/nospec.h>
 #include "mac80211_hwsim.h"
 
 #define WARN_QUEUE 100
@@ -2820,9 +2821,6 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 				IEEE80211_VHT_CAP_SHORT_GI_80 |
 				IEEE80211_VHT_CAP_SHORT_GI_160 |
 				IEEE80211_VHT_CAP_TXSTBC |
-				IEEE80211_VHT_CAP_RXSTBC_1 |
-				IEEE80211_VHT_CAP_RXSTBC_2 |
-				IEEE80211_VHT_CAP_RXSTBC_3 |
 				IEEE80211_VHT_CAP_RXSTBC_4 |
 				IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
 			sband->vht_cap.vht_mcs.rx_mcs_map =
@@ -3317,6 +3315,11 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
 	if (info->attrs[HWSIM_ATTR_CHANNELS])
 		param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
 
+	if (param.channels < 1) {
+		GENL_SET_ERR_MSG(info, "must have at least one channel");
+		return -EINVAL;
+	}
+
 	if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
 		GENL_SET_ERR_MSG(info, "too many channels specified");
 		return -EINVAL;
@@ -3350,6 +3353,9 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
 			kfree(hwname);
 			return -EINVAL;
 		}
+
+		idx = array_index_nospec(idx,
+					 ARRAY_SIZE(hwsim_world_regdom_custom));
 		param.regd = hwsim_world_regdom_custom[idx];
 	}