From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> commit 3a1255396b5aba40299d5dd5bde67b160a44117f upstream. From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> While testing my MPX removal series, Borislav noted compilation failure with an allnoconfig build. Turned out to be a missing include of insn.h in alternative.c. With MPX, it got it implicitly from: asm/mmu_context.h -> asm/mpx.h -> asm/insn.h Fixes: c3d6324f841b ("x86/alternatives: Teach text_poke_bp() to emulate instructions") Reported-by: Borislav Petkov <bp@xxxxxxxxx> Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxx> Cc: x86@xxxxxxxxxx Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/alternative.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -23,6 +23,7 @@ #include <asm/nmi.h> #include <asm/cacheflush.h> #include <asm/tlbflush.h> +#include <asm/insn.h> #include <asm/io.h> #include <asm/fixmap.h>