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Date:      Sun, 28 Sep 2014 21:01:26 -0700
From:      John-Mark Gurney <jmg@funkthat.com>
To:        Mattia Rossi <mattia.rossi.mailinglists@gmail.com>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>, Ian Lepore <ian@freebsd.org>
Subject:   Re: Random Kernel Panic on Dreamplug (FS related)
Message-ID:  <20140929040126.GG43300@funkthat.com>
In-Reply-To: <542559BC.7090100@gmail.com>
References:  <542559BC.7090100@gmail.com>

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Mattia Rossi wrote this message on Fri, Sep 26, 2014 at 14:19 +0200:
> This might be part of the weird FFS issues the Dreamplug has and no-one 
> knows why they're happening.

Are you running w/ FFS journaling?  If so, try turning it off, but
keeping softupdates on..

> data_abort_handler() at data_abort_handler+0x5c0
>          pc = 0xc0de7a28  lr = 0xc0dd711c (exception_exit)
>          sp = 0xde019898  fp = 0xde019a20
>          r4 = 0xffffffff  r5 = 0xffff1004
>          r6 = 0xc3f3f6c0  r7 = 0x00001000
>          r8 = 0xc443e880  r9 = 0x00000000
>         r10 = 0xc3d69000
> exception_exit() at exception_exit
>          pc = 0xc0dd711c  lr = 0xc0d53828 (ffs_truncate+0xaa8)
>          sp = 0xde0198e8  fp = 0xde019a20
>          r0 = 0xd0238120  r1 = 0x00000e60
>          r2 = 0x00000000  r3 = 0x00000000
>          r4 = 0x00000120  r5 = 0x00000000
>          r6 = 0xc3f3f6c0  r7 = 0x00001000
>          r8 = 0xc443e880  r9 = 0x00000000
>         r10 = 0xc3d69000 r12 = 0xd0238120
> memset() at memset+0x48
>          pc = 0xc0de521c  lr = 0xc0d53828 (ffs_truncate+0xaa8)
>          sp = 0xde0198e8  fp = 0xde019a20
> Unwind failure (no registers changed)

No more beyond this?   If you could run addr2line on 0xc0d53828 so
that we know where in ffs_truncate it's failing, that'd be very
nice...

> The sad thing is, that with fsck broken for the dreamplug, I have to 
> re-format the disk, reinstall everything and recreate the config files 
> which I didn't manage to copy to a safe place beforehand :-(
> 
> Before I do that I'll leave the system in debugging mode for a few days, 
> in case someone can help and needs some more information.
> 
> Cheers,
> 
> Mat
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-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."



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