Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.3-rc5] [cannot apply to akpm-mm/mm-everything next-20230403] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022 patch link: https://lore.kernel.org/r/20230403084759.884681-6-cem%40kernel.org patch subject: [PATCH 5/6] shmem: quota support config: hexagon-randconfig-r045-20230403 (https://download.01.org/0day-ci/archive/20230404/202304040523.Z5vLqfkr-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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://github.com/intel-lab-lkp/linux/commit/e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review cem-kernel-org/shmem-make-shmem_inode_acct_block-return-error/20230403-165022 git checkout e060b9e86fd92d5e87f5b0c447e4bc610a3d3bbe # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304040523.Z5vLqfkr-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from mm/shmem.c:29: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from mm/shmem.c:29: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from mm/shmem.c:29: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> mm/shmem.c:4252:1: warning: unused label 'out3' [-Wunused-label] out3: ^~~~~ mm/shmem.c:1534:20: warning: unused function 'shmem_show_mpol' [-Wunused-function] static inline void shmem_show_mpol(struct seq_file *seq, struct mempolicy *mpol) ^ 8 warnings generated. vim +/out3 +4252 mm/shmem.c 4224 4225 error = register_filesystem(&shmem_fs_type); 4226 if (error) { 4227 pr_err("Could not register tmpfs\n"); 4228 goto out2; 4229 } 4230 4231 shm_mnt = kern_mount(&shmem_fs_type); 4232 if (IS_ERR(shm_mnt)) { 4233 error = PTR_ERR(shm_mnt); 4234 pr_err("Could not kern_mount tmpfs\n"); 4235 goto out1; 4236 } 4237 4238 #ifdef CONFIG_TRANSPARENT_HUGEPAGE 4239 if (has_transparent_hugepage() && shmem_huge > SHMEM_HUGE_DENY) 4240 SHMEM_SB(shm_mnt->mnt_sb)->huge = shmem_huge; 4241 else 4242 shmem_huge = SHMEM_HUGE_NEVER; /* just in case it was patched */ 4243 #endif 4244 return; 4245 4246 out1: 4247 unregister_filesystem(&shmem_fs_type); 4248 out2: 4249 #ifdef CONFIG_TMPFS_QUOTA 4250 unregister_quota_format(&shmem_quota_format); 4251 #endif > 4252 out3: 4253 shmem_destroy_inodecache(); 4254 shm_mnt = ERR_PTR(error); 4255 } 4256 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
