[tip:x86/urgent] x86/traps: Use format string with panic() call

From: tip-bot for Rasmus Villemoes
Date: Mon Oct 29 2018 - 07:35:38 EST

Commit-ID: 2022cceb4e30f1bb4c84d40ffa705aa8d8d68adb
Gitweb: https://git.kernel.org/tip/2022cceb4e30f1bb4c84d40ffa705aa8d8d68adb
Author: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
AuthorDate: Sat, 27 Oct 2018 00:20:04 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 29 Oct 2018 07:19:26 +0100

x86/traps: Use format string with panic() call

Building with -Wformat-nonliteral gives:

arch/x86/kernel/traps.c:334:2: warning: format not a string literal and no format arguments [-Wformat-nonliteral]

handle_stack_overflow() can only be called from two places (kernel/traps.c
and via inline asm in mm/fault.c), in both cases with a string not
containing format specifiers, so we might as well silence this warning
using "%s" as a format string.

Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20181026222004.14193-1-linux@xxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
arch/x86/kernel/traps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 8f6dcd88202e..9b7c4ca8f0a7 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -306,7 +306,7 @@ __visible void __noreturn handle_stack_overflow(const char *message,
die(message, regs, 0);

/* Be absolutely certain we don't return. */
- panic(message);
+ panic("%s", message);