Hi Kees, [auto build test ERROR on linus/master] [also build test ERROR on v4.13-rc2 next-20170726] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Kees-Cook/fortify-Use-WARN-instead-of-BUG-for-now/20170727-101839 config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): In file included from arch/x86/include/asm/page_32.h:34:0, from arch/x86/include/asm/page.h:13, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:37, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:80, from include/linux/spinlock.h:50, from include/linux/wait.h:8, from include/linux/wait_bit.h:7, from include/linux/fs.h:5, from include/linux/buffer_head.h:11, from fs/adfs/dir_f.c:12: In function 'memcpy', inlined from '__adfs_dir_put' at fs/adfs/dir_f.c:318:2, inlined from 'adfs_f_update' at fs/adfs/dir_f.c:403:2: >> include/linux/string.h:308:4: error: call to '__read_overflow2' declared >> with attribute error: detected read beyond size of object passed as 2nd >> parameter __read_overflow2(); ^~~~~~~~~~~~~~~~~~ vim +/__read_overflow2 +308 include/linux/string.h 6974f0c4 Daniel Micay 2017-07-12 299 6974f0c4 Daniel Micay 2017-07-12 300 __FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t size) 6974f0c4 Daniel Micay 2017-07-12 301 { 6974f0c4 Daniel Micay 2017-07-12 302 size_t p_size = __builtin_object_size(p, 0); 6974f0c4 Daniel Micay 2017-07-12 303 size_t q_size = __builtin_object_size(q, 0); 6974f0c4 Daniel Micay 2017-07-12 304 if (__builtin_constant_p(size)) { 6974f0c4 Daniel Micay 2017-07-12 305 if (p_size < size) 6974f0c4 Daniel Micay 2017-07-12 306 __write_overflow(); 6974f0c4 Daniel Micay 2017-07-12 307 if (q_size < size) 6974f0c4 Daniel Micay 2017-07-12 @308 __read_overflow2(); acf23d09 Kees Cook 2017-07-25 309 } else { acf23d09 Kees Cook 2017-07-25 310 if (p_size < size) acf23d09 Kees Cook 2017-07-25 311 fortify_write_overflow(__func__); acf23d09 Kees Cook 2017-07-25 312 if (q_size < size) acf23d09 Kees Cook 2017-07-25 313 fortify_read_overflow2(__func__); 6974f0c4 Daniel Micay 2017-07-12 314 } 6974f0c4 Daniel Micay 2017-07-12 315 return __builtin_memcpy(p, q, size); 6974f0c4 Daniel Micay 2017-07-12 316 } 6974f0c4 Daniel Micay 2017-07-12 317 :::::: The code at line 308 was first introduced by commit :::::: 6974f0c4555e285ab217cee58b6e874f776ff409 include/linux/string.h: add the option of fortified string.h functions :::::: TO: Daniel Micay <danielmi...@gmail.com> :::::: CC: Linus Torvalds <torva...@linux-foundation.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
