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Date:      Thu, 4 Jan 2007 17:52:08 +0700
From:      Eugene Grosbein <eugen@www.svzserv.kemerovo.su>
To:        Kostik Belousov <kostikbel@gmail.com>
Cc:        freebsd-hackers@freebsd.org, Eugene Grosbein <eugen@kuzbass.ru>
Subject:   Re: WITNESS & RELENG_6
Message-ID:  <20070104105208.GA78979@svzserv.kemerovo.su>
In-Reply-To: <20070104103708.GF21325@deviant.kiev.zoral.com.ua>
References:  <20070103141820.GA1014@grosbein.pp.ru> <200701031601.05541.jhb@freebsd.org> <20070104040727.GD21325@deviant.kiev.zoral.com.ua> <20070104103708.GF21325@deviant.kiev.zoral.com.ua>

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On Thu, Jan 04, 2007 at 12:37:08PM +0200, Kostik Belousov wrote:

> The problem is revealed by INVARIANTS option, not by WITNESS, and is definitely the use-after-free.
> 
> in src/nvidia_dev.c, nvidia_dev_close(), that is cdevsw.d_close proc,
> the destroy_dev() is called. Please, apply rev. 1.199 of sys/kern/kern_conf.c.
> I expect that crashes shall stop, but non-killable processes (in the "devdrn")
> state would accumulate.
> 
> Please, confirm.

I've tried to apply 1.199 to RELENG_6 but failed:
one of three chunks has been rejected.

Eugene



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