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Date:      Thu, 5 May 2016 18:20:07 +0200
From:      Svatopluk Kraus <onwahe@gmail.com>
To:        bob prohaska <fbsd@www.zefox.net>
Cc:        Ulrich Grey <usenet@ulrich-grey.de>,  "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: CUBOX crashes during port build
Message-ID:  <CAFHCsPUYwOjTjF=g5TY-xL5YVn5xrpPnwAOH6UtefHo8t38Jig@mail.gmail.com>
In-Reply-To: <20160503032138.GR71221@www.zefox.net>
References:  <20160502093349.bd3a2e060b81dbb8d65c5ee0@ulrich-grey.de> <20160503032138.GR71221@www.zefox.net>

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On Tue, May 3, 2016 at 5:21 AM, bob prohaska <fbsd@www.zefox.net> wrote:
> On Mon, May 02, 2016 at 09:33:49AM +0200, Ulrich Grey wrote:
>> I am running 11-CURRENT r297692 (snapshot cubox-hummingboard 20160408).
>> After some hours building print/texlive-full the CUBOX crashed.
>>
>> Fatal kernel mode data abort: 'Translation Fault (L2)' on read
>
> Not sure it's related, but 'Translation fault (L2)' on read is probably
> the most common single crash message I've seen on RPI2. However, compiling
> software, even world builds, haven't triggered it in many months.


 'Translation fault (L2)' should be the most common crash message.
It's 'synonym' for 'page fault' in x86 arch. Anytime when bad pointer
is referenced, the 'Translation fault (L2)' happens. The FAR is the
faulting pointer then.


>
>>
>> trapframe: 0xfb57b778
>>
>> FSR=00000007, FAR=0000004d, spsr=20000013
>>
>> r0 =00000000, r1 =00000001, r2 =00000003, r3 =00000001
>>
>> r4 =c460f370, r5 =c7bc0460, r6 =00000001, r7 =00000000
>>
>> r8 =00000000, r9 =c26c4230, r10=00000000, r11=fb57b828
>>
>> r12=c2937000, ssp=fb57b808, slr=c2521e30, pc =c2539504
>>
>>
> On today's RPI2 crash it reported:
> root@www:~ # Fatal kernel mode data abort: 'Translation Fault (L2)' on read
> trapframe: 0xed518e10
> FSR=00000007, FAR=00000000, spsr=00000013
> r0 =00000000, r1 =00000000, r2 =00000000, r3 =00000000
> r4 =00000000, r5 =00000000, r6 =00000000, r7 =00000000
> r8 =00000000, r9 =00000000, r10=00000000, r11=00000000
> r12=00000000, ssp=ed518ea0, slr=00000000, pc =00000000
>
> [ thread pid 16417 tid 100099 ]
> Stopped at      0:      address 0 is invalid
> *** error reading from address 0 ***
> KDB: reentering
>
> More output can be found at
>
> http://www.zefox.net/~fbsd/rpi2/crashes/crash_5_2_16/
>
> Thanks for reading, I hope this is of interest.
>
> bob prohaska
>
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