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Date: Wed, 21 May 2014 22:20:59 +0200
From: Hans Petter Selasky <hps@selasky.org>
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To: Aleksandr Rybalko <ray@FreeBSD.org>, src-committers@freebsd.org, 
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Subject: Re: svn commit: r265927 - head/sys/dev/vt
References: <201405121929.s4CJTcBx010967@svn.freebsd.org>
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On 05/12/14 21:29, Aleksandr Rybalko wrote:
> Author: ray
> Date: Mon May 12 19:29:38 2014
> New Revision: 265927
> URL: http://svnweb.freebsd.org/changeset/base/265927
>
> Log:
>    Update terminal sizes in any case when new vt(4) driver arrive.
>    (Plus remove one unused newline)
>
>    Sponsored by:	The FreeBSD Foundation
>
> Modified:
>    head/sys/dev/vt/vt_core.c
>

This patch causes panic when booting the RPI-B:

VT: initialize with new VT driver "fb".
panic: mtx_lock() of spin mutex (null) @ 
/usr/img/freebsd/sys/dev/vt/vt_core.c:2037
KDB: enter: panic
[ thread pid 0 tid 100000 ]
Stopped at      $d:     ldrb    r15, [r15, r15, ror r15]!

__mtx_lock_flags() at
vt_resize() at vt_upgrade() at
mi_startup() at mi_startup+0x11c


--HPS