tree: https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git btree-private-unions head: 30d91fbcef11ed07350f943fd3f695e0fb0635dd commit: 35137236b91e958ca683fd4a045a29c0b5310938 [52/72] xfs: don't crash with assfail config: ia64-allnoconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 35137236b91e958ca683fd4a045a29c0b5310938 # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from arch/ia64/include/asm/pgtable.h:154, from include/linux/mm.h:94, from fs///attr.c:11: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': 137 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ vim +/old_rr4 +137 arch/ia64/include/asm/mmu_context.h ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 131 ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 132 static inline void badea125d7cbd9 include/asm-ia64/mmu_context.h David Mosberger-Tang 2005-07-25 133 reload_context (nv_mm_context_t context) ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 134 { ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 135 unsigned long rid; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 136 unsigned long rid_incr = 0; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 @137 unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 138 0a41e250116058 include/asm-ia64/mmu_context.h Peter Chubb 2005-08-16 139 old_rr4 = ia64_get_rr(RGN_BASE(RGN_HPAGE)); ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 140 rid = context << 3; /* make space for encoding the region number */ ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 141 rid_incr = 1 << 8; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 142 ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 143 /* encode the region id, preferred page size, and VHPT enable bit: */ ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 144 rr0 = (rid << 8) | (PAGE_SHIFT << 2) | 1; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 145 rr1 = rr0 + 1*rid_incr; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 146 rr2 = rr0 + 2*rid_incr; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 147 rr3 = rr0 + 3*rid_incr; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 148 rr4 = rr0 + 4*rid_incr; ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 149 #ifdef CONFIG_HUGETLB_PAGE ^1da177e4c3f41 include/asm-ia64/mmu_context.h Linus Torvalds 2005-04-16 150 rr4 = (rr4 & (~(0xfcUL))) | (old_rr4 & 0xfc); 0a41e250116058 include/asm-ia64/mmu_context.h Peter Chubb 2005-08-16 151 :::::: The code at line 137 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org