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Sat, 29 Apr 2023 10:30:59 +0000 Date: Sat, 29 Apr 2023 18:30:19 +0800 From: kernel test robot To: Kees Cook Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: drivers/scsi/fcoe/fcoe_ctlr.c:1871:13: warning: stack frame size (1072) exceeds limit (1024) in 'fcoe_ctlr_recv_work' Message-ID: <202304291839.L1PvCRkL-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 89d77f71f493a3663b10fa812d17f472935d24be commit: 54d9469bc515dc5fcbc20eecbe19cea868b70d68 fortify: Add run-time WARN for cross-field memcpy() date: 8 months ago config: riscv-randconfig-r015-20230429 (https://download.01.org/0day-ci/archive/20230429/202304291839.L1PvCRkL-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54d9469bc515dc5fcbc20eecbe19cea868b70d68 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 54d9469bc515dc5fcbc20eecbe19cea868b70d68 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/scsi/fcoe/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304291839.L1PvCRkL-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/scsi/fcoe/fcoe_ctlr.c:1871:13: warning: stack frame size (1072) exceeds limit (1024) in 'fcoe_ctlr_recv_work' [-Wframe-larger-than] static void fcoe_ctlr_recv_work(struct work_struct *recv_work) ^ 677/1072 (63.15%) spills, 395/1072 (36.85%) variables 1 warning generated. vim +/fcoe_ctlr_recv_work +1871 drivers/scsi/fcoe/fcoe_ctlr.c 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1866 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1867 /** 70b51aabf3b03f drivers/scsi/fcoe/libfcoe.c Robert Love 2009-11-03 1868 * fcoe_ctlr_recv_work() - Worker thread function for receiving FIP frames 70b51aabf3b03f drivers/scsi/fcoe/libfcoe.c Robert Love 2009-11-03 1869 * @recv_work: Handle to a FCoE controller 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1870 */ 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 @1871 static void fcoe_ctlr_recv_work(struct work_struct *recv_work) 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1872 { 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1873 struct fcoe_ctlr *fip; 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1874 struct sk_buff *skb; 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1875 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1876 fip = container_of(recv_work, struct fcoe_ctlr, recv_work); 1f4aed818d26eb drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-11-03 1877 while ((skb = skb_dequeue(&fip->fip_recv_list))) 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1878 fcoe_ctlr_recv_handler(fip, skb); 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1879 } 97c8389d54b966 drivers/scsi/fcoe/libfcoe.c Joe Eykholt 2009-03-17 1880 :::::: The code at line 1871 was first introduced by commit :::::: 97c8389d54b9665c38105ea72a428a44b97ff2f6 [SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive. :::::: TO: Joe Eykholt :::::: CC: James Bottomley -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests