[PATCH] objtool: Add rewind_stack_do_exit() to the noreturn list

[Josh Poimboeuf]

This fixes the following warning seen on GCC 7.3:

  arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to 
next function show_regs()

Reported-by: kbuild test robot <l...@intel.com>
Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com>
---
 tools/objtool/check.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 38b0517dc49e..ac743a1d53ab 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -143,6 +143,7 @@ static int __dead_end_function(struct objtool_file *file, 
struct symbol *func,
                "fortify_panic",
                "usercopy_abort",
                "machine_real_restart",
+               "rewind_stack_do_exit",
        };
 
        if (func->bind == STB_WEAK)
-- 
2.17.2