tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: ec2618180c3450d06a6a4ba951d4c9a2c689b517 commit: a1166b2653db2f3de7338b9fb8a0f6e924b904ee [2265/2770] ath10k: add CCMP PN replay protection for fragmented frames for PCIe config: h8300-randconfig-r035-20210513 (attached as .config) compiler: h8300-linux-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout a1166b2653db2f3de7338b9fb8a0f6e924b904ee # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/net/wireless/ath/ath10k/htt_rx.c: In function 'ath10k_htt_rx_h_frag_pn_check': 1780 | bool more_frags; | ^~~~~~~~~~ vim +/more_frags +1780 drivers/net/wireless/ath/ath10k/htt_rx.c 1770 1771 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, 1772 struct sk_buff *skb, 1773 u16 peer_id, 1774 u16 offset, 1775 enum htt_rx_mpdu_encrypt_type enctype) 1776 { 1777 struct ath10k_peer *peer; 1778 union htt_rx_pn_t *last_pn, new_pn = {0}; 1779 struct ieee80211_hdr *hdr; 1781 u8 tid, frag_number; 1782 u32 seq; 1783 1784 peer = ath10k_peer_find_by_id(ar, peer_id); 1785 if (!peer) { 1786 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); 1787 return false; 1788 } 1789 1790 hdr = (struct ieee80211_hdr *)(skb->data + offset); 1791 if (ieee80211_is_data_qos(hdr->frame_control)) 1792 tid = ieee80211_get_tid(hdr); 1793 else 1794 tid = ATH10K_TXRX_NON_QOS_TID; 1795 1796 last_pn = &peer->frag_tids_last_pn[tid]; 1797 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype); 1798 more_frags = ieee80211_has_morefrags(hdr->frame_control); 1799 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; 1800 seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; 1801 1802 if (frag_number == 0) { 1803 last_pn->pn48 = new_pn.pn48; 1804 peer->frag_tids_seq[tid] = seq; 1805 } else { 1806 if (seq != peer->frag_tids_seq[tid]) 1807 return false; 1808 1809 if (new_pn.pn48 != last_pn->pn48 + 1) 1810 return false; 1811 1812 last_pn->pn48 = new_pn.pn48; 1813 } 1814 1815 return true; 1816 } 1817 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org