[kbuild-all] Re: [linux-next:master 7012/7430] include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_183' declared with attribute error: unexpected size in kmalloc_index()

On Mon, Jun 07, 2021 at 01:40:02PM +0200, Vlastimil Babka wrote: > On 6/6/21 1:08 PM, Hyeonggon Yoo wrote: > > On Sat, Jun 05, 2021 at 02:10:46PM +0800, kernel test robot wrote: > >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > >> head: ccc252d2e818f6a479441119ad453c3ce7c7c461 > >> commit: a7ba988ff9de37f0961b4bf96d17aca73d0d2e25 [7012/7430] mm, slub: change run-time assertion in kmalloc_index() to compile-time > >> config: parisc-randconfig-r014-20210604 (attached as .config) > >> compiler: hppa-linux-gcc (GCC) 9.3.0 > >> 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... > >> git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > >> git fetch --no-tags linux-next master > >> git checkout a7ba988ff9de37f0961b4bf96d17aca73d0d2e25 > >> # save the attached .config to linux build tree > >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc > >> > >> If you fix the issue, kindly add following tag as appropriate > >> Reported-by: kernel test robot <lkp(a)intel.com&gt; > >> > >> All errors (new ones prefixed by >>): > >> In file included from <command-line>: > >> In function 'kmalloc_index', > >> inlined from 'kmalloc_node' at include/linux/slab.h:572:20, > >> inlined from 'bpf_map_kmalloc_node.isra.0.part.0' at include/linux/bpf.h:1319:9: > >> >> include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_183' declared with attribute error: unexpected size in kmalloc_index() > >> 328 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) > >> | ^ > >> include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert' > >> 309 | prefix ## suffix(); \ > >> | ^~~~~~ > >> include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert' > >> 328 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) > >> | ^~~~~~~~~~~~~~~~~~~ > >> include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' > >> 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) > >> | ^~~~~~~~~~~~~~~~~~ > >> include/linux/slab.h:389:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' > >> 389 | BUILD_BUG_ON_MSG(1, "unexpected size in kmalloc_index()"); > >> | ^~~~~~~~~~~~~~~~ > > > > Reproduce with attached config, and read the code. > > It has no problem in clang (clang-10/clang-11). it is problem with gcc. > > But what exactly is the gcc problem here? > Did you have to reproduce it with specific gcc version and/or architecture? > Before replying, I should say that I'm not an expert on gcc. I just tried some ways to fix the error, and it seemed to me that gcc is doing something wrong.