From: Josh Triplett <josh@joshtriplett.org>
Date: Mon, 7 Apr 2014 22:39:12 +0000 (-0700)
Subject: bug: when !CONFIG_BUG, make WARN call no_printk to check format and args
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4e50ebde32bed67a9aec8c239bbd89e5d0b8727b;p=deliverable%2Flinux.git

bug: when !CONFIG_BUG, make WARN call no_printk to check format and args

The stub version of WARN for !CONFIG_BUG completely ignored its format
string and subsequent arguments; make it check them instead, using
no_printk.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2d54d8df7bd1..a97fa11aaf41 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -155,6 +155,7 @@ extern void warn_slowpath_null(const char *file, const int line);
 #ifndef WARN
 #define WARN(condition, format...) ({					\
 	int __ret_warn_on = !!(condition);				\
+	no_printk(format);						\
 	unlikely(__ret_warn_on);					\
 })
 #endif