Hi Muhammad, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on next-20230615] [cannot apply to linus/master v6.4-rc6] [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/Muhammad-Usama-Anjum/userfaultfd-UFFD_FEATURE_WP_ASYNC/20230615-225037 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230615141144.665148-3-usama.anjum%40collabora.com patch subject: [PATCH v19 2/5] fs/proc/task_mmu: Implement IOCTL to get and optionally clear info about PTEs config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230616/202306160006.dNg0cOoc-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git git fetch akpm-mm mm-everything git checkout akpm-mm/mm-everything b4 shazam https://lore.kernel.org/r/20230615141144.665148-3-usama.anjum@xxxxxxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash fs/proc/ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306160006.dNg0cOoc-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/asm-generic/bug.h:5, from arch/m68k/include/asm/bug.h:32, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:6, from include/linux/pagewalk.h:5, from fs/proc/task_mmu.c:2: fs/proc/task_mmu.c: In function 'pagemap_scan_args_valid': >> fs/proc/task_mmu.c:2148:32: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 2148 | if (!access_ok((void __user *)arg->vec, | ^ include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ fs/proc/task_mmu.c:2148:22: note: in expansion of macro 'access_ok' 2148 | if (!access_ok((void __user *)arg->vec, | ^~~~~~~~~ vim +2148 fs/proc/task_mmu.c 2115 2116 static int pagemap_scan_args_valid(struct pm_scan_arg *arg, unsigned long start, 2117 struct page_region __user *vec) 2118 { 2119 /* Detect illegal size, flags, len and masks */ 2120 if (arg->size != sizeof(struct pm_scan_arg)) 2121 return -EINVAL; 2122 if (!arg->flags) 2123 return -EINVAL; 2124 if (arg->flags & ~PM_SCAN_OPS) 2125 return -EINVAL; 2126 if (!arg->len) 2127 return -EINVAL; 2128 if ((arg->required_mask | arg->anyof_mask | arg->excluded_mask | 2129 arg->return_mask) & ~PM_SCAN_BITS_ALL) 2130 return -EINVAL; 2131 if (!arg->required_mask && !arg->anyof_mask && 2132 !arg->excluded_mask) 2133 return -EINVAL; 2134 if (!arg->return_mask) 2135 return -EINVAL; 2136 2137 /* Validate memory range */ 2138 if (!IS_ALIGNED(start, PAGE_SIZE)) 2139 return -EINVAL; 2140 if (!access_ok((void __user *)start, arg->len)) 2141 return -EFAULT; 2142 2143 if (IS_PM_SCAN_GET(arg->flags)) { 2144 if (!arg->vec) 2145 return -EINVAL; 2146 if (arg->vec_len == 0) 2147 return -EINVAL; > 2148 if (!access_ok((void __user *)arg->vec, 2149 arg->vec_len * sizeof(struct page_region))) 2150 return -EFAULT; 2151 } 2152 2153 if (IS_PM_SCAN_WP(arg->flags) && !IS_PM_SCAN_GET(arg->flags) && 2154 arg->max_pages) 2155 return -EINVAL; 2156 2157 return 0; 2158 } 2159 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
