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Date:      Wed, 02 Jun 2010 10:58:33 -0700
From:      Matthew Jacob <mj@feral.com>
To:        freebsd-current@freebsd.org
Subject:   Re: ata panic: "mtx_lock of destroyed mutex"
Message-ID:  <4C069BC9.4080603@feral.com>
In-Reply-To: <20100602185714.000069be@unknown>
References:  <20100602185714.000069be@unknown>

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Hmm. I just fixed that at Panasas, and I'm pretty sure that I gave the 
patch to Alexander Motin to put in.

> I've been setting up an amd64 VirtualBox machine with the latest
> 9-CURRENT and got the following panic when booting it (another machine
> updated and booting at the same time didn't panic):
>
> ata1: WARNING - READ_TOC read data overrun 18>12
> panic: mtx_lock of destroyed mutex @ /usr/src/sys/kern/kern_sema.c:79
> cpuid = 0
>
> with the following stack trace:
>
> kdb_enter
> panic
> _mtx_lock_flags
> _sema_post
> ata_completed
> taskqueue_run
> intr_event_execute_handlers
> ithread_loop
> fork_exit
> fork_trampoline
>
>    




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