Messages in this thread |  | | Date | Thu, 26 Dec 2019 16:56:02 +0800 | From | kbuild test robot <> | Subject | include/linux/string.h:355:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter |
| |
Hi Dmitry,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 46cf053efec6a3a5f343fead837777efe8252a46 commit: a2ecb233e3e759730269b31b7d8add823cf196ba mips: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE date: 3 months ago config: mips-randconfig-a001-20191226 (attached as .config) compiler: mips64el-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout a2ecb233e3e759730269b31b7d8add823cf196ba # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=mips
If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/bitmap.h:9:0, from include/linux/cpumask.h:12, from arch/mips/include/asm/processor.h:15, from arch/mips/include/asm/thread_info.h:16, from include/linux/thread_info.h:38, from include/asm-generic/preempt.h:5, from ./arch/mips/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/mmzone.h:8, from include/linux/gfp.h:6, from include/linux/mm.h:10, from include/linux/memblock.h:13, from arch/mips/loongson64/common/init.c:7: In function 'memcpy', inlined from 'mips_nmi_setup' at arch/mips/loongson64/common/init.c:24:2: >> include/linux/string.h:355:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter __read_overflow2(); ^~~~~~~~~~~~~~~~~~
vim +/__read_overflow2 +355 include/linux/string.h
6974f0c4555e28 Daniel Micay 2017-07-12 346 6974f0c4555e28 Daniel Micay 2017-07-12 347 __FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t size) 6974f0c4555e28 Daniel Micay 2017-07-12 348 { 6974f0c4555e28 Daniel Micay 2017-07-12 349 size_t p_size = __builtin_object_size(p, 0); 6974f0c4555e28 Daniel Micay 2017-07-12 350 size_t q_size = __builtin_object_size(q, 0); 6974f0c4555e28 Daniel Micay 2017-07-12 351 if (__builtin_constant_p(size)) { 6974f0c4555e28 Daniel Micay 2017-07-12 352 if (p_size < size) 6974f0c4555e28 Daniel Micay 2017-07-12 353 __write_overflow(); 6974f0c4555e28 Daniel Micay 2017-07-12 354 if (q_size < size) 6974f0c4555e28 Daniel Micay 2017-07-12 @355 __read_overflow2(); 6974f0c4555e28 Daniel Micay 2017-07-12 356 } 6974f0c4555e28 Daniel Micay 2017-07-12 357 if (p_size < size || q_size < size) 6974f0c4555e28 Daniel Micay 2017-07-12 358 fortify_panic(__func__); 6974f0c4555e28 Daniel Micay 2017-07-12 359 return __builtin_memcpy(p, q, size); 6974f0c4555e28 Daniel Micay 2017-07-12 360 } 6974f0c4555e28 Daniel Micay 2017-07-12 361
:::::: The code at line 355 was first introduced by commit :::::: 6974f0c4555e285ab217cee58b6e874f776ff409 include/linux/string.h: add the option of fortified string.h functions
:::::: TO: Daniel Micay <danielmicay@gmail.com> :::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation [unhandled content-type:application/gzip] |  |