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 <[email protected]> Cc: [email protected] Cc: Andrey Ryabinin <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrew Morton <[email protected]> Cc: [email protected] Cc: [email protected] --- 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
