Fixes the objtool warning: arch/x86/mm/fault.o: warning: objtool: no_context()+0x220: unreachable instruction
Link: https://github.com/ClangBuiltLinux/linux/issues/204 Signed-off-by: Nick Desaulniers <nick.desaulni...@gmail.com> --- arch/x86/mm/fault.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 47bebfe6efa7..057d2178fa19 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -760,9 +760,11 @@ no_context(struct pt_regs *regs, unsigned long error_code, * and then double-fault, though, because we're likely to * break the console driver and lose most of the stack dump. */ - asm volatile ("movq %[stack], %%rsp\n\t" + asm volatile (UNWIND_HINT_SAVE + "movq %[stack], %%rsp\n\t" "call handle_stack_overflow\n\t" - "1: jmp 1b" + "1: jmp 1b\n\t" + UNWIND_HINT_RESTORE : ASM_CALL_CONSTRAINT : "D" ("kernel stack overflow (page fault)"), "S" (regs), "d" (address), -- 2.17.1
