On Tuesday 11 June 2013, James Bottomley wrote:
> Really, no, it's not a good idea at all. It invites tons of patches
> littering the code with BUG_ONs where we might possibly get a NULL
> dereference. All it does is add extra instructions to a code path for
> no actual benefit.
>
> If you can answer the question: what more information does the BUG_ON
> give you than the NULL deref Oops would not? then it might be
> reasonable.
The question is if a user can trigger the NULL dereference intentionally,
in which case they might get the kernel to jump into a user-provided
buffer.
Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
