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Date:      Sun, 19 Jul 2015 07:03:32 +0200
From:      "Herbert J. Skuhra" <herbert@oslo.ath.cx>
To:        Andriy Gapon <avg@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org
Subject:   Re: svn commit: r284998 - in stable/10: cddl/contrib/opensolaris/cmd/lockstat sys/kern sys/sys
Message-ID:  <20150719050332.GA93016@oslo.ath.cx>
In-Reply-To: <201507011015.t61AFoNo028793@svn.freebsd.org>
References:  <201507011015.t61AFoNo028793@svn.freebsd.org>

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On Wed, Jul 01, 2015 at 10:15:50AM +0000, Andriy Gapon wrote:
> Author: avg
> Date: Wed Jul  1 10:15:49 2015
> New Revision: 284998
> URL: https://svnweb.freebsd.org/changeset/base/284998
> 
> Log:
>   MFC r284297: several lockstat improvements
> 
> Modified:
>   stable/10/cddl/contrib/opensolaris/cmd/lockstat/lockstat.c
>   stable/10/sys/kern/kern_mutex.c
>   stable/10/sys/kern/kern_rwlock.c
>   stable/10/sys/kern/kern_sx.c
>   stable/10/sys/sys/lockstat.h
> Directory Properties:
>   stable/10/   (props changed)

Yesterday I tried to upgrade my Soekris Net6501-70 from 10.2-PRERELEASE
(r284583) to 10.2-BETA2 (r285646). All kernels after this commit fail to
boot:

SMP: AP CPU #1 Launched!

Fatal double fault:
eip = 0xc08b2e0f
esp = 0xe0febfec
ebp = 0xe0fec008
cpuid = 1; apic id = 01
panic: double fault
cpuid = 1
KDB: stack backtrace:
#0 0xc065ed62 at kdb_backtrace+0x52
#1 0xc06204eb at vpanic+0x11b
#2 0xc06203cb at panic+0x1b
#3 0xc08a5bbb at dblfault_handler+0xab
Uptime: 2s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
cpu_reset: Restarting BSP
timeout stopping cpus
cpu_reset_proxy: Stopped CPU 1

I am running i386 on my Soekris.

-- 
Herbert



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