tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-5.4 head: b98b3164c31115159bca6e3c71c0c98426868ca9 commit: cc784e813e05f1a5773275d71469dab8ea13c08f [30/42] net: igmp: fix data-race in igmp_ifc_timer_expire() config: riscv-allmodconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 11.2.0 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/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable pending-5.4 git checkout cc784e813e05f1a5773275d71469dab8ea13c08f # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash net/ipv4/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the sashal-linux-stable/pending-5.4 HEAD b98b3164c31115159bca6e3c71c0c98426868ca9 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): In file included from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/module.h:9, from net/ipv4/igmp.c:69: net/ipv4/igmp.c: In function 'igmp_ifc_timer_expire': 417 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler.h:398:25: note: in definition of macro '__compiletime_assert' 398 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler.h:417:9: note: in expansion of macro '_compiletime_assert' 417 | _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/build_bug.h:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG' 59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") | ^~~~~~~~~~~~~~~~ arch/riscv/include/asm/cmpxchg.h:335:17: note: in expansion of macro 'BUILD_BUG' 335 | BUILD_BUG(); \ | ^~~~~~~~~ arch/riscv/include/asm/cmpxchg.h:344:30: note: in expansion of macro '__cmpxchg' 344 | (__typeof__(*(ptr))) __cmpxchg((ptr), \ | ^~~~~~~~~ net/ipv4/igmp.c:815:21: note: in expansion of macro 'cmpxchg' 815 | if (cmpxchg(&in_dev->mr_ifc_count, | ^~~~~~~ vim +/__compiletime_assert_259 +417 include/linux/compiler.h 9a8ab1c39970a4 Daniel Santos 2013-02-21 403 9a8ab1c39970a4 Daniel Santos 2013-02-21 404 #define _compiletime_assert(condition, msg, prefix, suffix) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 405 __compiletime_assert(condition, msg, prefix, suffix) 9a8ab1c39970a4 Daniel Santos 2013-02-21 406 9a8ab1c39970a4 Daniel Santos 2013-02-21 407 /** 9a8ab1c39970a4 Daniel Santos 2013-02-21 408 * compiletime_assert - break build and emit msg if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 409 * @condition: a compile-time constant condition to check 9a8ab1c39970a4 Daniel Santos 2013-02-21 410 * @msg: a message to emit if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 411 * 9a8ab1c39970a4 Daniel Santos 2013-02-21 412 * In tradition of POSIX assert, this macro will break the build if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 413 * supplied condition is *false*, emitting the supplied error message if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 414 * compiler has support to do so. 9a8ab1c39970a4 Daniel Santos 2013-02-21 415 */ 9a8ab1c39970a4 Daniel Santos 2013-02-21 416 #define compiletime_assert(condition, msg) \ 3910babeac1ab0 Vegard Nossum 2020-04-06 @417 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) 9a8ab1c39970a4 Daniel Santos 2013-02-21 418 :::::: The code at line 417 was first introduced by commit :::::: 3910babeac1ab031f4e178042cbd1af9a9a0ec51 compiler.h: fix error in BUILD_BUG_ON() reporting :::::: TO: Vegard Nossum <vegard.nossum(a)oracle.com&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org