From 5c5c1f36cedfb51ec291181e71817f7fe7e03ee2 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Mon, 12 Dec 2016 16:44:53 -0800
Subject: kasan: support panic_on_warn
If user sets panic_on_warn, he wants kernel to panic if there is
anything barely wrong with the kernel. KASAN-detected errors are
definitely not less benign than an arbitrary kernel WARNING.
Panic after KASAN errors if panic_on_warn is set.
We use this for continuous fuzzing where we want kernel to stop and
reboot on any error.
Link: http://lkml.kernel.org/r/1476694764-31986-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/kasan/report.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'mm/kasan/report.c')
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 073325aedc68..b82b3e215157 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -136,6 +136,8 @@ static void kasan_end_report(unsigned long *flags)
pr_err("==================================================================\n");
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
spin_unlock_irqrestore(&report_lock, *flags);
+ if (panic_on_warn)
+ panic("panic_on_warn set ...\n");
kasan_enable_current();
}
--
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