On 6/7/21 2:25 PM, Hyeonggon Yoo wrote: > 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/commit/?id=a7ba988ff9de37f0961b4bf96d17aca73d0d2e25 >> >> 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@xxxxxxxxx> >> >> >> >> 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. I'm involving my gcc colleagues, will report results...
