Hi Ayman, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20190918] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Ayman-Bagabas/platform-x86-Huawei-WMI-laptop-extras-driver/20190921-072831 base: next-20190918 :::::: branch date: 31 hours ago :::::: commit date: 31 hours ago If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> smatch warnings: drivers/platform/x86/huawei-wmi.c:327 huawei_wmi_battery_get() error: buffer overflow 'ret' 256 <= 256 # https://github.com/0day-ci/linux/commit/2b04f79aef9a86ecb9483dd27a82498fa56bc0c9 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 2b04f79aef9a86ecb9483dd27a82498fa56bc0c9 vim +/ret +327 drivers/platform/x86/huawei-wmi.c 2b04f79aef9a86 Ayman Bagabas 2019-09-20 311 2b04f79aef9a86 Ayman Bagabas 2019-09-20 312 static int huawei_wmi_battery_get(int *start, int *end) 2b04f79aef9a86 Ayman Bagabas 2019-09-20 313 { 2b04f79aef9a86 Ayman Bagabas 2019-09-20 314 u8 ret[0x100]; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 315 int err, i; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 316 2b04f79aef9a86 Ayman Bagabas 2019-09-20 317 err = huawei_wmi_cmd(BATTERY_THRESH_GET, ret, 0x100); 2b04f79aef9a86 Ayman Bagabas 2019-09-20 318 if (err) 2b04f79aef9a86 Ayman Bagabas 2019-09-20 319 return err; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 320 2b04f79aef9a86 Ayman Bagabas 2019-09-20 321 /* Find the last two non-zero values. Return status is ignored. */ 2b04f79aef9a86 Ayman Bagabas 2019-09-20 322 i = 0x100; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 323 do { 2b04f79aef9a86 Ayman Bagabas 2019-09-20 324 if (start) 2b04f79aef9a86 Ayman Bagabas 2019-09-20 325 *start = ret[i-1]; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 326 if (end) 2b04f79aef9a86 Ayman Bagabas 2019-09-20 @327 *end = ret[i]; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 328 } while (i > 2 && !ret[i--]); 2b04f79aef9a86 Ayman Bagabas 2019-09-20 329 2b04f79aef9a86 Ayman Bagabas 2019-09-20 330 return 0; 2b04f79aef9a86 Ayman Bagabas 2019-09-20 331 } 2b04f79aef9a86 Ayman Bagabas 2019-09-20 332 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
