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It may have been fixed somewhere. All errors (new ones prefixed by >>): In file included from mm/kasan/common.c:17: In file included from include/linux/memblock.h:13: In file included from arch/um/include/asm/dma.h:5: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ >> mm/kasan/common.c:601:14: error: use of undeclared identifier 'KASAN_VMALLOC_KEEP_TAG' 601 | if (flags & KASAN_VMALLOC_KEEP_TAG) { | ^ mm/kasan/common.c:615:49: error: use of undeclared identifier 'KASAN_VMALLOC_KEEP_TAG' 615 | __kasan_unpoison_vmalloc(addr, size, flags | KASAN_VMALLOC_KEEP_TAG); | ^ 1 warning and 2 errors generated. vim +/KASAN_VMALLOC_KEEP_TAG +601 mm/kasan/common.c 586 587 #ifdef CONFIG_KASAN_VMALLOC 588 void __kasan_unpoison_vmap_areas(struct vm_struct **vms, int nr_vms, 589 kasan_vmalloc_flags_t flags) 590 { 591 unsigned long size; 592 void *addr; 593 int area; 594 u8 tag; 595 596 /* 597 * If KASAN_VMALLOC_KEEP_TAG was set at this point, all vms[] pointers 598 * would be unpoisoned with the KASAN_TAG_KERNEL which would disable 599 * KASAN checks down the line. 600 */ > 601 if (flags & KASAN_VMALLOC_KEEP_TAG) { -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki