tree: https://android.googlesource.com/kernel/common android12-5.4 head: 50c92ebdfb558caa5bfc6a0f7f76958b3d9ecf85 commit: 35e191ee5e0d532bd77882c4fe7ed95bffb9793e [2/5] BACKPORT: mm: speedup mremap on 1GB or larger regions config: x86_64-randconfig-c002-20210215 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android12-5.4 git checkout 35e191ee5e0d532bd77882c4fe7ed95bffb9793e # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 include/asm-generic/bug.h:5, from arch/x86/include/asm/bug.h:83, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:9, from mm/mremap.c:11: mm/mremap.c: In function 'get_extent': 364 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler.h:345:4: note: in definition of macro '__compiletime_assert' 345 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler.h:364:2: note: in expansion of macro '_compiletime_assert' 364 | _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") | ^~~~~~~~~~~~~~~~ mm/mremap.c:341:3: note: in expansion of macro 'BUILD_BUG' 341 | BUILD_BUG(); | ^~~~~~~~~ vim +/__compiletime_assert_176 +364 include/linux/compiler.h 9a8ab1c39970a4 Daniel Santos 2013-02-21 350 9a8ab1c39970a4 Daniel Santos 2013-02-21 351 #define _compiletime_assert(condition, msg, prefix, suffix) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 352 __compiletime_assert(condition, msg, prefix, suffix) 9a8ab1c39970a4 Daniel Santos 2013-02-21 353 9a8ab1c39970a4 Daniel Santos 2013-02-21 354 /** 9a8ab1c39970a4 Daniel Santos 2013-02-21 355 * compiletime_assert - break build and emit msg if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 356 * @condition: a compile-time constant condition to check 9a8ab1c39970a4 Daniel Santos 2013-02-21 357 * @msg: a message to emit if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 358 * 9a8ab1c39970a4 Daniel Santos 2013-02-21 359 * In tradition of POSIX assert, this macro will break the build if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 360 * supplied condition is *false*, emitting the supplied error message if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 361 * compiler has support to do so. 9a8ab1c39970a4 Daniel Santos 2013-02-21 362 */ 9a8ab1c39970a4 Daniel Santos 2013-02-21 363 #define compiletime_assert(condition, msg) \ 3910babeac1ab0 Vegard Nossum 2020-04-06 @364 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) 9a8ab1c39970a4 Daniel Santos 2013-02-21 365 :::::: The code at line 364 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