kern/165863

[Ryan Stone]

On Fri, Mar 9, 2012 at 4:30 AM, Gleb Smirnoff <glebius at freebsd.org> wrote:
> The following reply was made to PR kern/165863; it has been noted by GNATS.
>
> From: Gleb Smirnoff <glebius at FreeBSD.org>
> To: Eric van Gyzen <eric_van_gyzen at dell.com>,
>        Eric van Gyzen <eric at vangyzen.net>, emaste at FreeBSD.org
> Cc: bug-followup at FreeBSD.org
> Subject: kern/165863
> Date: Fri, 9 Mar 2012 13:20:56 +0400
>
>  --BXVAT5kNtrzKuDFl
>  Content-Type: text/plain; charset=koi8-r
>  Content-Disposition: inline
>
>   Hello, Eric and Ed.
>
>   Can you look at this patch? I decided to utilize newer callout API,
>  that allows to delegate lock retrieval to the callout subsystem, and
>  this makes things simplier. Hope that should work.
>
>   Patch is against head.
>
>   Eric, can you please send me your test programs, that you use to
>  reproduce the bug?

I tested this patch today on head and 8.2-RELEASE.  I was unable to
reproduce any crashes, whereas before I could crash the system within
minutes.

However it appears that in6_lltable_prefix_free is similarly broken.
The only saving grace is that there does not appear to be a code path
that can actually call it.