Hi Markus, url: https://github.com/0day-ci/linux/commits/Markus-Theil/mac80211-enable-QoS-support-for-nl80211-ctrl-port/20201210-065717 base: https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git master config: x86_64-randconfig-s021-20201210 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-179-ga00755aa-dirty # https://github.com/0day-ci/linux/commit/514b314825e19f7075eb375b3effa93ff0f6a16e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Markus-Theil/mac80211-enable-QoS-support-for-nl80211-ctrl-port/20201210-065717 git checkout 514b314825e19f7075eb375b3effa93ff0f6a16e # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" >> net/mac80211/tx.c:1206:26: sparse: sparse: dubious: !x & y vim +1206 net/mac80211/tx.c 9ae54c8463691b Johannes Berg 2008-01-31 1162 static ieee80211_tx_result 3b8d81e020f77c Johannes Berg 2009-06-17 1163 ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata, 3b8d81e020f77c Johannes Berg 2009-06-17 1164 struct ieee80211_tx_data *tx, 7c10770f995820 Johannes Berg 2015-03-20 1165 struct sta_info *sta, struct sk_buff *skb) e2ebc74d7e3d71 Johannes Berg 2007-07-27 1166 { 3b8d81e020f77c Johannes Berg 2009-06-17 1167 struct ieee80211_local *local = sdata->local; 58d4185e36913d Johannes Berg 2007-09-26 1168 struct ieee80211_hdr *hdr; e039fa4a4195ac Johannes Berg 2008-05-15 1169 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 68f2b517bcbd81 Johannes Berg 2011-10-07 1170 int tid; e2ebc74d7e3d71 Johannes Berg 2007-07-27 1171 e2ebc74d7e3d71 Johannes Berg 2007-07-27 1172 memset(tx, 0, sizeof(*tx)); e2ebc74d7e3d71 Johannes Berg 2007-07-27 1173 tx->skb = skb; e2ebc74d7e3d71 Johannes Berg 2007-07-27 1174 tx->local = local; 3b8d81e020f77c Johannes Berg 2009-06-17 1175 tx->sdata = sdata; 252b86c43225d0 Johannes Berg 2011-11-16 1176 __skb_queue_head_init(&tx->skbs); e2ebc74d7e3d71 Johannes Berg 2007-07-27 1177 cd8ffc800ce18e Johannes Berg 2009-03-23 1178 /* cd8ffc800ce18e Johannes Berg 2009-03-23 1179 * If this flag is set to true anywhere, and we get here, cd8ffc800ce18e Johannes Berg 2009-03-23 1180 * we are doing the needed processing, so remove the flag cd8ffc800ce18e Johannes Berg 2009-03-23 1181 * now. cd8ffc800ce18e Johannes Berg 2009-03-23 1182 */ cc20ff2c6b5d3e Felix Fietkau 2020-09-08 1183 info->control.flags &= ~IEEE80211_TX_INTCFL_NEED_TXPROCESSING; cd8ffc800ce18e Johannes Berg 2009-03-23 1184 58d4185e36913d Johannes Berg 2007-09-26 1185 hdr = (struct ieee80211_hdr *) skb->data; 58d4185e36913d Johannes Berg 2007-09-26 1186 7c10770f995820 Johannes Berg 2015-03-20 1187 if (likely(sta)) { 7c10770f995820 Johannes Berg 2015-03-20 1188 if (!IS_ERR(sta)) 7c10770f995820 Johannes Berg 2015-03-20 1189 tx->sta = sta; 7c10770f995820 Johannes Berg 2015-03-20 1190 } else { 3f0e0b220f8007 Felix Fietkau 2010-01-08 1191 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { f14543ee4d0681 Felix Fietkau 2009-11-10 1192 tx->sta = rcu_dereference(sdata->u.vlan.sta); 7c10770f995820 Johannes Berg 2015-03-20 1193 if (!tx->sta && sdata->wdev.use_4addr) 3f0e0b220f8007 Felix Fietkau 2010-01-08 1194 return TX_DROP; 514b314825e19f Markus Theil 2020-12-09 1195 } else if (tx->sdata->control_port_protocol == tx->skb->protocol) { b4d57adb727ec7 Felix Fietkau 2010-01-31 1196 tx->sta = sta_info_get_bss(sdata, hdr->addr1); 3f0e0b220f8007 Felix Fietkau 2010-01-08 1197 } 9d6b106b54e02a Johannes Berg 2015-02-24 1198 if (!tx->sta && !is_multicast_ether_addr(hdr->addr1)) abe60632f311d5 Johannes Berg 2009-11-25 1199 tx->sta = sta_info_get(sdata, hdr->addr1); 7c10770f995820 Johannes Berg 2015-03-20 1200 } 58d4185e36913d Johannes Berg 2007-09-26 1201 cd8ffc800ce18e Johannes Berg 2009-03-23 1202 if (tx->sta && ieee80211_is_data_qos(hdr->frame_control) && 49a59543eb5a5d Johannes Berg 2011-09-29 1203 !ieee80211_is_qos_nullfunc(hdr->frame_control) && 30686bf7f5b3c3 Johannes Berg 2015-06-02 1204 ieee80211_hw_check(&local->hw, AMPDU_AGGREGATION) && 514b314825e19f Markus Theil 2020-12-09 1205 !ieee80211_hw_check(&local->hw, TX_AMPDU_SETUP_IN_HW) && 514b314825e19f Markus Theil 2020-12-09 @1206 !info->flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { ! has higher precedence than & so this is equivalent of "if (!info->flags) {" Presumably, it should be: !(info->flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) { cd8ffc800ce18e Johannes Berg 2009-03-23 1207 struct tid_ampdu_tx *tid_tx; cd8ffc800ce18e Johannes Berg 2009-03-23 1208 a1f2ba04cc9241 Sara Sharon 2018-02-19 1209 tid = ieee80211_get_tid(hdr); 8b30b1fe368ab0 Sujith 2008-10-24 1210 a622ab72b4dcfd Johannes Berg 2010-06-10 1211 tid_tx = rcu_dereference(tx->sta->ampdu_mlme.tid_tx[tid]); a622ab72b4dcfd Johannes Berg 2010-06-10 1212 if (tid_tx) { a622ab72b4dcfd Johannes Berg 2010-06-10 1213 bool queued; a622ab72b4dcfd Johannes Berg 2010-06-10 1214 a622ab72b4dcfd Johannes Berg 2010-06-10 1215 queued = ieee80211_tx_prep_agg(tx, skb, info, a622ab72b4dcfd Johannes Berg 2010-06-10 1216 tid_tx, tid); cd8ffc800ce18e Johannes Berg 2009-03-23 1217 cd8ffc800ce18e Johannes Berg 2009-03-23 1218 if (unlikely(queued)) cd8ffc800ce18e Johannes Berg 2009-03-23 1219 return TX_QUEUED; 8b30b1fe368ab0 Sujith 2008-10-24 1220 } a622ab72b4dcfd Johannes Berg 2010-06-10 1221 } 8b30b1fe368ab0 Sujith 2008-10-24 1222 badffb725c86cc Jiri Slaby 2007-08-28 1223 if (is_multicast_ether_addr(hdr->addr1)) { 5cf121c3cdb955 Johannes Berg 2008-02-25 1224 tx->flags &= ~IEEE80211_TX_UNICAST; e039fa4a4195ac Johannes Berg 2008-05-15 1225 info->flags |= IEEE80211_TX_CTL_NO_ACK; 6fd67e937ece53 Simon Wunderlich 2011-11-18 1226 } else 5cf121c3cdb955 Johannes Berg 2008-02-25 1227 tx->flags |= IEEE80211_TX_UNICAST; 58d4185e36913d Johannes Berg 2007-09-26 1228 a26eb27ab43014 Johannes Berg 2011-10-07 1229 if (!(info->flags & IEEE80211_TX_CTL_DONTFRAG)) { a26eb27ab43014 Johannes Berg 2011-10-07 1230 if (!(tx->flags & IEEE80211_TX_UNICAST) || a26eb27ab43014 Johannes Berg 2011-10-07 1231 skb->len + FCS_LEN <= local->hw.wiphy->frag_threshold || a26eb27ab43014 Johannes Berg 2011-10-07 1232 info->flags & IEEE80211_TX_CTL_AMPDU) a26eb27ab43014 Johannes Berg 2011-10-07 1233 info->flags |= IEEE80211_TX_CTL_DONTFRAG; 58d4185e36913d Johannes Berg 2007-09-26 1234 } 58d4185e36913d Johannes Berg 2007-09-26 1235 e2ebc74d7e3d71 Johannes Berg 2007-07-27 1236 if (!tx->sta) e039fa4a4195ac Johannes Berg 2008-05-15 1237 info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; f7418bc10d8402 Felix Fietkau 2015-09-24 1238 else if (test_and_clear_sta_flag(tx->sta, WLAN_STA_CLEAR_PS_FILT)) { e039fa4a4195ac Johannes Berg 2008-05-15 1239 info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; f7418bc10d8402 Felix Fietkau 2015-09-24 1240 ieee80211_check_fast_xmit(tx->sta); f7418bc10d8402 Felix Fietkau 2015-09-24 1241 } 58d4185e36913d Johannes Berg 2007-09-26 1242 e039fa4a4195ac Johannes Berg 2008-05-15 1243 info->flags |= IEEE80211_TX_CTL_FIRST_FRAGMENT; e2ebc74d7e3d71 Johannes Berg 2007-07-27 1244 9ae54c8463691b Johannes Berg 2008-01-31 1245 return TX_CONTINUE; e2ebc74d7e3d71 Johannes Berg 2007-07-27 1246 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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