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Date: Sun, 21 Aug 2011 18:34:23 -0700
Message-ID: <CAGH67wT8--206eD7HEa8zKEn=bTrUZDpCsNy0_9kS1u0ZAZ7Mg@mail.gmail.com>
From: Garrett Cooper <yanegomi@gmail.com>
To: Andriy Gapon <avg@freebsd.org>, "Kenneth D. Merry" <ken@freebsd.org>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: panic: mtx_lock_spin: recursed on non-recursive mutex cnputs_mtx
 @ /usr/src/sys/kern/kern_cons.c:420 when running dump in ddb
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On Thu, Aug 18, 2011 at 5:55 PM, Garrett Cooper <yanegomi@gmail.com> wrote:
> Hi,
> =A0 =A0Long story short, I was running a UP kernel on a netbook trying to
> stimulate a crash and when I did dump, it would periodically fail
> non-recursive mutex failure with the output shown below (I caught it
> once, but the other times the dump failed).

    This actually shows up when generating a panic via boot -v with
WITNESS, so it's potentially a race condition on my laptop. Adding
MTX_RECURSE to the mutex object didn't help things either.
Thanks,
-Garrett