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/[email protected] Signed-off-by: Dmitry Vyukov <[email protected]> Acked-by: Andrey Ryabinin <[email protected]> Cc: Alexander Potapenko <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
berg · Dec 13, 2016 · 5c5c1f3 · 5c5c1f3
1 parent 49920d2
commit 5c5c1f3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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();
 }