Messages in this thread |  | | Date | Mon, 3 May 2021 03:48:52 +0800 | From | kernel test robot <> | Subject | net/mac80211/tx.c:1060:1: warning: stack frame size of 2096 bytes in function 'ieee80211_tx_h_calculate_duration' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 17ae69aba89dbfa2139b7f8024b757ab3cc42f59 commit: 89b8c02a35f5c6199f76a839b7a7e450f8185f1b mac80211: don't calculate duration for S1G date: 7 months ago config: powerpc64-randconfig-r026-20210430 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8f5a2a5836cc8e4c1def2bdeb022e7b496623439) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89b8c02a35f5c6199f76a839b7a7e450f8185f1b git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 89b8c02a35f5c6199f76a839b7a7e450f8185f1b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
net/mac80211/tx.c:3571:17: warning: stack frame size of 3648 bytes in function 'ieee80211_tx_dequeue' [-Wframe-larger-than=] struct sk_buff *ieee80211_tx_dequeue(struct ieee80211_hw *hw, ^ >> net/mac80211/tx.c:1060:1: warning: stack frame size of 2096 bytes in function 'ieee80211_tx_h_calculate_duration' [-Wframe-larger-than=] ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx) ^ 2 warnings generated.
vim +/ieee80211_tx_h_calculate_duration +1060 net/mac80211/tx.c
e2ebc74d7e3d71 Johannes Berg 2007-07-27 1058 d9e8a70fa20dc3 Johannes Berg 2008-06-30 1059 static ieee80211_tx_result debug_noinline 03f93c3d4c8aa9 Johannes Berg 2008-06-25 @1060 ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx) 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1061 { 252b86c43225d0 Johannes Berg 2011-11-16 1062 struct sk_buff *skb; 2de8e0d999b879 Johannes Berg 2009-03-23 1063 struct ieee80211_hdr *hdr; 2de8e0d999b879 Johannes Berg 2009-03-23 1064 int next_len; 2de8e0d999b879 Johannes Berg 2009-03-23 1065 bool group_addr; 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1066 252b86c43225d0 Johannes Berg 2011-11-16 1067 skb_queue_walk(&tx->skbs, skb) { 2de8e0d999b879 Johannes Berg 2009-03-23 1068 hdr = (void *) skb->data; 7e0aae4732067e Jouni Malinen 2009-05-19 1069 if (unlikely(ieee80211_is_pspoll(hdr->frame_control))) 7e0aae4732067e Jouni Malinen 2009-05-19 1070 break; /* must not overwrite AID */ 252b86c43225d0 Johannes Berg 2011-11-16 1071 if (!skb_queue_is_last(&tx->skbs, skb)) { 252b86c43225d0 Johannes Berg 2011-11-16 1072 struct sk_buff *next = skb_queue_next(&tx->skbs, skb); 252b86c43225d0 Johannes Berg 2011-11-16 1073 next_len = next->len; 252b86c43225d0 Johannes Berg 2011-11-16 1074 } else 252b86c43225d0 Johannes Berg 2011-11-16 1075 next_len = 0; 2de8e0d999b879 Johannes Berg 2009-03-23 1076 group_addr = is_multicast_ether_addr(hdr->addr1); 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1077 2de8e0d999b879 Johannes Berg 2009-03-23 1078 hdr->duration_id = 252b86c43225d0 Johannes Berg 2011-11-16 1079 ieee80211_duration(tx, skb, group_addr, next_len); 252b86c43225d0 Johannes Berg 2011-11-16 1080 } 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1081 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1082 return TX_CONTINUE; 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1083 } 03f93c3d4c8aa9 Johannes Berg 2008-06-25 1084
:::::: The code at line 1060 was first introduced by commit :::::: 03f93c3d4c8aa9ed2e2b0a949ece658053527d71 mac80211: fix tx fragmentation
:::::: TO: Johannes Berg <johannes@sipsolutions.net> :::::: CC: John W. Linville <linville@tuxdriver.com>
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