Re: [PATCH] kconfig: Avoid buffer underrun in choice input

[Michal Marek <mmarek@suse.cz>]

On 23.4.2011 19:42, Ben Hutchings wrote:
> commit 40aee729b350672c2550640622416a855e27938f ('kconfig: fix default
> value for choice input') fixed some cases where kconfig would select
> the wrong option from a choice with a single valid option and thus
> enter an infinite loop.
>
> However, this broke the test for user input of the form 'N?', because
> when kconfig selects the single valid option the input is zero-length
> and the test will read the byte before the input buffer.  If this
> happens to contain '?' (as it will in a mips build on Debian unstable
> today) then kconfig again enters an infinite loop.
>
> Signed-off-by: Ben Hutchings<ben@decadent.org.uk>
> Cc: stable@kernel.org [2.6.17+]
> ---
> Roman has failed to respond to this after 5 weeks and one reminder, so
> please take it directly.

I applied this on 8th April, see
http://www.spinics.net/lists/linux-kbuild/msg04431.html. Please check 
linux-next before reposting patches next time, now I either have to 
rewind the kconfig branch or let Linus merge it with a duplicate commit :-(.

Michal