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Date:      Wed, 2 Jun 2010 18:57:14 +0100
From:      Bruce Cran <bruce@cran.org.uk>
To:        current@freebsd.org
Subject:   ata panic: "mtx_lock of destroyed mutex"
Message-ID:  <20100602185714.000069be@unknown>

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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

-- 
Bruce Cran



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