Re: [RFC/PATCH RESEND -next 00/21] Address sanitizer for kernel (kasan) - dynamic memory error detector.

[Andi Kleen]

Dave Hansen <dave.hansen@xxxxxxxxx> writes:
>
> You're also claiming that "KASAN is better than all of

better as in finding more bugs, but surely not better as in
"do so with less overhead"

> CONFIG_DEBUG_PAGEALLOC".  So should we just disallow (or hide)
> DEBUG_PAGEALLOC on kernels where KASAN is available?

I don't think DEBUG_PAGEALLOC/SLUB debug and kasan really conflict.

DEBUG_PAGEALLOC/SLUB is "much lower overhead but less bugs found".
KASAN is "slow but thorough" There are niches for both.

But I could see KASAN eventually deprecating kmemcheck, which
is just incredible slow.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/