Messages in this thread Patch in this message | | | From | Dmitry Vyukov <> | Subject | [PATCH] kasan: support panic_on_warn | Date | Mon, 17 Oct 2016 10:57:04 +0200 |
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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.
Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Cc: kasan-dev@googlegroups.com Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org
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Changes from v1: - don't reset panic_on_warn before calling panic() --- mm/kasan/report.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 24c1211..0ee8211 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -133,6 +133,8 @@ 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(); } -- 2.8.0.rc3.226.g39d4020
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