linux-kernel - [PATCH] trace: fix SKIP_STACK

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Date:   Fri,  8 Jun 2018 14:47:46 -0700
From:   Greg Thelen <gthelen@...gle.com>
To:     Andi Kleen <andi@...stfloor.org>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-kbuild@...r.kernel.org, akpm@...ux-foundation.org,
        Andi Kleen <ak@...ux.intel.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Greg Thelen <gthelen@...gle.com>
Subject: [PATCH] trace: fix SKIP_STACK_VALIDATION=1 build

Non gcc-5 builds with CONFIG_STACK_VALIDATION=y and
SKIP_STACK_VALIDATION=1 fail.
Example output:
  /bin/sh: init/.tmp_main.o: Permission denied

commit 96f60dfa5819 ("trace: Use -mcount-record for dynamic ftrace"),
added a mismatched endif.  This causes cmd_objtool to get mistakenly
set.

Relocate endif to balance the newly added -record-mcount check.

Fixes: 96f60dfa5819 ("trace: Use -mcount-record for dynamic ftrace")
Signed-off-by: Greg Thelen <gthelen@...gle.com>
---
 scripts/Makefile.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 34d9e9ce97c2..e7889f486ca1 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -239,6 +239,7 @@ cmd_record_mcount =						\
 	     "$(CC_FLAGS_FTRACE)" ]; then			\
 		$(sub_cmd_record_mcount)			\
 	fi;
+endif # -record-mcount
 endif # CONFIG_FTRACE_MCOUNT_RECORD
 
 ifdef CONFIG_STACK_VALIDATION
@@ -263,7 +264,6 @@ ifneq ($(RETPOLINE_CFLAGS),)
   objtool_args += --retpoline
 endif
 endif
-endif
 
 
 ifdef CONFIG_MODVERSIONS
-- 
2.18.0.rc1.242.g61856ae69a-goog