From da9eac8990dc614ab4756f2a3d84870b675f1f1e Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Fri, 4 Jul 2008 09:59:36 -0700
Subject: lib: taint kernel in common report_bug() WARN path.

Commit 95b570c9cef3b12356454c7112571b7e406b4b51 ("Taint kernel after
WARN_ON(condition)") introduced a TAINT_WARN that was implemented for
all architectures using the generic warn_on_slowpath(), which excluded
any architecture that set HAVE_ARCH_WARN_ON.

As all of the architectures that implement their own WARN_ON() all go
through the report_bug() path (specifically handling BUG_TRAP_TYPE_WARN),
taint the kernel there as well for consistency.

Tested on avr32 and sh. Also relevant for s390, parisc, and powerpc.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 lib/bug.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/bug.c')

diff --git a/lib/bug.c b/lib/bug.c
index 530f38f55787..bfeafd60ee9f 100644
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -37,6 +37,7 @@
  */
 #include <linux/list.h>
 #include <linux/module.h>
+#include <linux/kernel.h>
 #include <linux/bug.h>
 #include <linux/sched.h>
 
@@ -149,6 +150,7 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs)
 			       (void *)bugaddr);
 
 		show_regs(regs);
+		add_taint(TAINT_WARN);
 		return BUG_TRAP_TYPE_WARN;
 	}
 
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