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Date: Tue, 10 May 2022 21:43:37 +0800 From: kernel test robot <lkp@...el.com> To: Yi Yang <yiyang13@...wei.com>, chris@...kel.net, jcmvbkbc@...il.com, viro@...iv.linux.org.uk Cc: kbuild-all@...ts.01.org, linux-xtensa@...ux-xtensa.org, linux-kernel@...r.kernel.org, axboe@...nel.dk, wangweiyang2@...wei.com Subject: Re: [PATCH -next] xtensa/simdisk: fix error handling in proc_read_simdisk() Hi Yi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20220509] url: https://github.com/intel-lab-lkp/linux/commits/Yi-Yang/xtensa-simdisk-fix-error-handling-in-proc_read_simdisk/20220510-161001 base: ab38272e99730375c5db3db1c4cebf691a0550ab config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220510/202205102144.vmTlPCDp-lkp@intel.com/config) compiler: xtensa-linux-gcc (GCC) 11.3.0 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/62cd9e58ed970829827bd2bfb24f2515a08fd921 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Yi-Yang/xtensa-simdisk-fix-error-handling-in-proc_read_simdisk/20220510-161001 git checkout 62cd9e58ed970829827bd2bfb24f2515a08fd921 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash arch/xtensa/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@...el.com> All warnings (new ones prefixed by >>): arch/xtensa/platforms/iss/simdisk.c: In function 'proc_read_simdisk': >> arch/xtensa/platforms/iss/simdisk.c:223:17: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 223 | ssize_t n = simple_read_from_buffer(buf, size, ppos, | ^~~~~~~ vim +223 arch/xtensa/platforms/iss/simdisk.c b6c7e873daf765 Victor Prupis 2008-05-19 207 a69755b187749e Al Viro 2013-03-31 208 static ssize_t proc_read_simdisk(struct file *file, char __user *buf, a69755b187749e Al Viro 2013-03-31 209 size_t size, loff_t *ppos) b6c7e873daf765 Victor Prupis 2008-05-19 210 { 359745d78351c6 Muchun Song 2022-01-21 211 struct simdisk *dev = pde_data(file_inode(file)); 0757f6159f13dc Geert Uytterhoeven 2013-05-09 212 const char *s = dev->filename; 62cd9e58ed9708 Yi Yang 2022-05-10 213 char *temp; 62cd9e58ed9708 Yi Yang 2022-05-10 214 a69755b187749e Al Viro 2013-03-31 215 if (s) { 62cd9e58ed9708 Yi Yang 2022-05-10 216 ssize_t len = strlen(s); 62cd9e58ed9708 Yi Yang 2022-05-10 217 62cd9e58ed9708 Yi Yang 2022-05-10 218 temp = kmalloc(len + 2, GFP_KERNEL); 62cd9e58ed9708 Yi Yang 2022-05-10 219 if (!temp) 62cd9e58ed9708 Yi Yang 2022-05-10 220 return -ENOMEM; 62cd9e58ed9708 Yi Yang 2022-05-10 221 62cd9e58ed9708 Yi Yang 2022-05-10 222 scnprintf(temp, len + 2, "%s\n", s); a69755b187749e Al Viro 2013-03-31 @223 ssize_t n = simple_read_from_buffer(buf, size, ppos, 62cd9e58ed9708 Yi Yang 2022-05-10 224 temp, strlen(temp)); 62cd9e58ed9708 Yi Yang 2022-05-10 225 62cd9e58ed9708 Yi Yang 2022-05-10 226 kfree(temp); a69755b187749e Al Viro 2013-03-31 227 return n; a69755b187749e Al Viro 2013-03-31 228 } a69755b187749e Al Viro 2013-03-31 229 return simple_read_from_buffer(buf, size, ppos, "\n", 1); b6c7e873daf765 Victor Prupis 2008-05-19 230 } b6c7e873daf765 Victor Prupis 2008-05-19 231 -- 0-DAY CI Kernel Test Service https://01.org/lkp
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