linux-kernel - [PATCH v3 3/5] bug: When !CONFIG_BUG, make WARN call no

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Message-ID: <04b030fe345cba242bc672cecc79ee0cac1b79bd.1394412745.git.josh@joshtriplett.org>
Date:	Sun, 9 Mar 2014 18:02:10 -0700
From:	Josh Triplett <josh@...htriplett.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/5] 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.

Reported-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Josh Triplett <josh@...htriplett.org>
---
v3: Patch unchanged from v2.
 include/asm-generic/bug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2d54d8d..a97fa11 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
-- 
1.9.0

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