PANIC: "ffs_valloc: dup alloc" on boot

Jonathan Anderson jonathan at
Fri Oct 14 10:32:41 UTC 2011

That's ok, a more aggressive fsck-from-a-rescue-disk strategy managed
to clean things up.

J Anderson

On 6 October 2011 15:58, Benjamin Kaduk <kaduk at> wrote:
> On Thu, 6 Oct 2011, Jonathan Anderson wrote:
>> On 5 October 2011 23:50, Jonathan Anderson <jonathan at> wrote:
>>> I was about to upgrade my build VM from BETA2 to BETA3, but I can't
>>> seem to boot BETA2 any more: I get a "ffs_valloc: dup alloc" panic on
>>> boot, every time. fsck runs and says, "ok, I've cleaned things up for
>>> you", but then later on, when trying to update motd, FFS dies.
>> Here are two screenshots: fsck succeeding and the relevant backtrace.
> Mailman seems to have stripped them.
> -Ben Kaduk

Jonathan Anderson

jonathan at

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