Commit 5c5c1f36 authored by Dmitry Vyukov's avatar Dmitry Vyukov Committed by Linus Torvalds

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.comSigned-off-by: default avatarDmitry Vyukov <dvyukov@google.com>
Acked-by: default avatarAndrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 49920d28
...@@ -136,6 +136,8 @@ static void kasan_end_report(unsigned long *flags) ...@@ -136,6 +136,8 @@ static void kasan_end_report(unsigned long *flags)
pr_err("==================================================================\n"); pr_err("==================================================================\n");
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
spin_unlock_irqrestore(&report_lock, *flags); spin_unlock_irqrestore(&report_lock, *flags);
if (panic_on_warn)
panic("panic_on_warn set ...\n");
kasan_enable_current(); kasan_enable_current();
} }
......
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