Combination of CONFIG_SPARSEMEM_VMEMMAP=n, CONFIG_KASAN=y cause build error: arch/x86/built-in.o: In function `populate_zero_shadow': kasan_init_64.c:(.init.text+0xe2cc): undefined reference to `vmemmap_alloc_block' kasan_init_64.c:(.init.text+0xe3ab): undefined reference to `vmemmap_alloc_block' kasan_init_64.c:(.init.text+0xe483): undefined reference to `vmemmap_alloc_block' arch/x86/built-in.o: In function `kasan_init': (.init.text+0xe65d): undefined reference to `vmemmap_populate' arch/x86/built-in.o: In function `kasan_init': (.init.text+0xe6ea): undefined reference to `vmemmap_populate' make: *** [vmlinux] Error 1 x86_64-specific part of KASAN depends on SPARSEMEM_VMEMMAP. Express this in Kconfig. Signed-off-by: Andrey Ryabinin <a.ryabinin@xxxxxxxxxxx> Reported-by: Jim Davis <jim.epost@xxxxxxxxx> --- arch/x86/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1607c46..1e78e3c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -85,7 +85,7 @@ config X86 select HAVE_CMPXCHG_LOCAL select HAVE_CMPXCHG_DOUBLE select HAVE_ARCH_KMEMCHECK - select HAVE_ARCH_KASAN if X86_64 + select HAVE_ARCH_KASAN if X86_64 && SPARSEMEM_VMEMMAP select HAVE_USER_RETURN_NOTIFIER select ARCH_BINFMT_ELF_RANDOMIZE_PIE select HAVE_ARCH_JUMP_LABEL -- 2.3.0 -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
