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Date:      Tue, 21 Jul 2009 19:29:10 +0400
From:      Kamigishi Rei <spambox@haruhiism.net>
To:        John Baldwin <jhb@freebsd.org>
Cc:        Lawrence Stewart <lstewart@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: [follow-up] Fatal trap 12 in r195146+ in netisr_queue_internal
Message-ID:  <4A65DEC6.3020608@haruhiism.net>
In-Reply-To: <200907211114.47691.jhb@freebsd.org>
References:  <4A659F98.2060007@haruhiism.net> <200907211027.06589.jhb@freebsd.org> <4A65D1CD.40006@haruhiism.net> <200907211114.47691.jhb@freebsd.org>

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John Baldwin wrote:
> v didn't change, it was always the busted value.  Somehow mtx_lock was
> corrupted to the value 0x14ee000 perhaps due to a buffer overflow bug or
> something else.
>   
I see; I'll try to track where exactly it becomes corrupted, then. 
Thanks for the input.
(Then, I suppose, this corruption remains in the seemingly 'fixed' 
revisions as it's probably just padded somewhere.)

Please forgive my lack of knowledge in concurrent execution related stuff.

--
Kamigishi Rei
KREI-RIPE



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