linux-kernel - [tip:core/urgent] objtool: Add rewind_stack_do

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Date:   Fri, 5 Apr 2019 05:05:12 -0700
From:   tip-bot for Josh Poimboeuf <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     jpoimboe@...hat.com, tglx@...utronix.de, lkp@...el.com,
        peterz@...radead.org, mingo@...nel.org, hpa@...or.com,
        linux-kernel@...r.kernel.org
Subject: [tip:core/urgent] objtool: Add rewind_stack_do_exit() to the
 noreturn list

Commit-ID:  4fa5ecda2bf96be7464eb406df8aba9d89260227
Gitweb:     https://git.kernel.org/tip/4fa5ecda2bf96be7464eb406df8aba9d89260227
Author:     Josh Poimboeuf <jpoimboe@...hat.com>
AuthorDate: Thu, 4 Apr 2019 12:17:35 -0500
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 5 Apr 2019 13:30:51 +0200

objtool: Add rewind_stack_do_exit() to the noreturn list

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 <lkp@...el.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: https://lkml.kernel.org/r/3418ebf5a5a9f6ed7e80954c741c0b904b67b5dc.1554398240.git.jpoimboe@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 5dde107083c6..479196aeb409 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -165,6 +165,7 @@ 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)