Hi Markus, [auto build test WARNING on s390/features] [also build test WARNING on v4.8-rc4 next-20160825] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/SF-Markus-Elfring/s390-debug-Fine-tuning-for-several-function-implementations/20160903-204622 base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features config: s390-allmodconfig (attached as .config) compiler: s390x-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=s390 All warnings (new ones prefixed by >>): arch/s390/kernel/debug.c: In function 'debug_get_user_string': >> arch/s390/kernel/debug.c:1167:10: warning: return makes pointer from integer without a cast [-Wint-conversion] return PTR_ERR(buffer); ^ vim +1167 arch/s390/kernel/debug.c 1151 id->debugfs_entries[i] = NULL; 1152 } 1153 spin_unlock_irqrestore(&id->lock, flags); 1154 debugfs_remove(dentry); 1155 out: 1156 return rc; 1157 } 1158 EXPORT_SYMBOL(debug_unregister_view); 1159 1160 static inline char * 1161 debug_get_user_string(const char __user *user_buf, size_t user_len) 1162 { 1163 char* buffer; 1164 1165 buffer = memdup_user(user_buf, user_len + 1); 1166 if (IS_ERR(buffer)) > 1167 return PTR_ERR(buffer); 1168 /* got the string, now strip linefeed. */ 1169 if (buffer[user_len - 1] == '\n') 1170 buffer[user_len - 1] = 0; 1171 else 1172 buffer[user_len] = 0; 1173 return buffer; 1174 } 1175 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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