tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y head: 65f1995ea1e930674e76c5888b4643581e11434c commit: 5f2f616343b1d62d26f24316fbfc107ecf0983a9 [3189/3969] linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP* config: powerpc-randconfig-r035-20210829 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 510e106fa8635e7f9c51c896180b971de6309b2f) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=5f2f616343b1d62d26f24316fbfc107ecf0983a9 git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-5.10.y git checkout 5f2f616343b1d62d26f24316fbfc107ecf0983a9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from net/qrtr/ns.c:8: In file included from include/linux/module.h:12: In file included from include/linux/list.h:9: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:29: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:310:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ >> net/qrtr/ns.c:669:13: warning: stack frame size (2096) exceeds limit (2048) in function 'qrtr_ns_worker' [-Wframe-larger-than] static void qrtr_ns_worker(struct work_struct *work) ^ 2 warnings generated. vim +/qrtr_ns_worker +669 net/qrtr/ns.c 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 668 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 @669 static void qrtr_ns_worker(struct work_struct *work) 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 670 { 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 671 const struct qrtr_ctrl_pkt *pkt; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 672 size_t recv_buf_size = 4096; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 673 struct sockaddr_qrtr sq; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 674 struct msghdr msg = { }; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 675 unsigned int cmd; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 676 ssize_t msglen; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 677 void *recv_buf; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 678 struct kvec iv; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 679 int ret; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 680 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 681 msg.msg_name = (struct sockaddr *)&sq; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 682 msg.msg_namelen = sizeof(sq); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 683 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 684 recv_buf = kzalloc(recv_buf_size, GFP_KERNEL); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 685 if (!recv_buf) 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 686 return; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 687 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 688 for (;;) { 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 689 iv.iov_base = recv_buf; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 690 iv.iov_len = recv_buf_size; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 691 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 692 msglen = kernel_recvmsg(qrtr_ns.sock, &msg, &iv, 1, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 693 iv.iov_len, MSG_DONTWAIT); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 694 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 695 if (msglen == -EAGAIN) 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 696 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 697 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 698 if (msglen < 0) { 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 699 pr_err("error receiving packet: %zd\n", msglen); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 700 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 701 } 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 702 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 703 pkt = recv_buf; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 704 cmd = le32_to_cpu(pkt->cmd); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 705 if (cmd < ARRAY_SIZE(qrtr_ctrl_pkt_strings) && 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 706 qrtr_ctrl_pkt_strings[cmd]) dfddb54043f0a3 Manivannan Sadhasivam 2020-04-21 707 trace_qrtr_ns_message(qrtr_ctrl_pkt_strings[cmd], dfddb54043f0a3 Manivannan Sadhasivam 2020-04-21 708 sq.sq_node, sq.sq_port); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 709 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 710 ret = 0; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 711 switch (cmd) { 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 712 case QRTR_TYPE_HELLO: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 713 ret = ctrl_cmd_hello(&sq); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 714 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 715 case QRTR_TYPE_BYE: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 716 ret = ctrl_cmd_bye(&sq); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 717 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 718 case QRTR_TYPE_DEL_CLIENT: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 719 ret = ctrl_cmd_del_client(&sq, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 720 le32_to_cpu(pkt->client.node), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 721 le32_to_cpu(pkt->client.port)); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 722 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 723 case QRTR_TYPE_NEW_SERVER: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 724 ret = ctrl_cmd_new_server(&sq, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 725 le32_to_cpu(pkt->server.service), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 726 le32_to_cpu(pkt->server.instance), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 727 le32_to_cpu(pkt->server.node), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 728 le32_to_cpu(pkt->server.port)); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 729 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 730 case QRTR_TYPE_DEL_SERVER: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 731 ret = ctrl_cmd_del_server(&sq, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 732 le32_to_cpu(pkt->server.service), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 733 le32_to_cpu(pkt->server.instance), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 734 le32_to_cpu(pkt->server.node), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 735 le32_to_cpu(pkt->server.port)); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 736 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 737 case QRTR_TYPE_EXIT: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 738 case QRTR_TYPE_PING: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 739 case QRTR_TYPE_RESUME_TX: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 740 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 741 case QRTR_TYPE_NEW_LOOKUP: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 742 ret = ctrl_cmd_new_lookup(&sq, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 743 le32_to_cpu(pkt->server.service), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 744 le32_to_cpu(pkt->server.instance)); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 745 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 746 case QRTR_TYPE_DEL_LOOKUP: 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 747 ctrl_cmd_del_lookup(&sq, 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 748 le32_to_cpu(pkt->server.service), 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 749 le32_to_cpu(pkt->server.instance)); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 750 break; 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 751 } 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 752 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 753 if (ret < 0) 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 754 pr_err("failed while handling packet from %d:%d", 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 755 sq.sq_node, sq.sq_port); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 756 } 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 757 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 758 kfree(recv_buf); 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 759 } 0c2204a4ad710d Manivannan Sadhasivam 2020-02-20 760 :::::: The code at line 669 was first introduced by commit :::::: 0c2204a4ad710d95d348ea006f14ba926e842ffd net: qrtr: Migrate nameservice to kernel from userspace :::::: TO: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
