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Date:      Sat, 22 Nov 2014 14:20:02 -0700
From:      Warner Losh <imp@bsdimp.com>
To:        Ian Lepore <ian@FreeBSD.org>
Cc:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, ticso@cicely.de
Subject:   Re: new support for Raspberry Pi B+
Message-ID:  <FBF07CE7-2DF2-4A2A-9E90-61DFA0A1B829@bsdimp.com>
In-Reply-To: <1416690352.1147.333.camel@revolution.hippie.lan>
References:  <5470E81A.3070009@foxvalley.net> <20141122200952.GA22446@cicely7.cicely.de> <5470F87D.1040208@foxvalley.net> <1416690352.1147.333.camel@revolution.hippie.lan>

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On Nov 22, 2014, at 2:05 PM, Ian Lepore <ian@FreeBSD.org> wrote:

> On Sat, 2014-11-22 at 13:56 -0700, Dan Raymond wrote:
>> On 11/22/2014 1:09 PM, Bernd Walter wrote:
>>> On Sat, Nov 22, 2014 at 12:46:34PM -0700, Dan Raymond wrote:
>>>> Further testing with the 16GB Kingston reveals that it is unstable =
even
>>>> at low speed.  I hit the following panic while executing "portsnap =
fetch
>>>> update" on a r274416 build:
>>>>=20
>>>> dev =3D mmcsd0s2a, ino =3D 155101, fs =3D /mnt/ufs
>>>> panic: ffs_freefile: freeing free inode
>>>> KDB: enter: panic
>>>> [ thread pid 8 tid 100056 ]
>>>> Stopped at      $d:     ldrb    r15, [r15, r15, ror r15]!
>>>> db>
>>> Maybe you've received a counterfeit.
>>> Unfortunately there are a lot of them on the market.
>>> Some of them are technically smaller than they claim and overwrite
>>> other data if they run short.
>>=20
>> I considered that originally which is why I bought 4 different cards =
of=20
>> different brands for testing (Transcend, SanDisk, Samsung, Kingston):
>>=20
>> =
http://www.amazon.com/gp/product/B00CBD0XSI/ref=3Doh_aui_detailpage_o06_s0=
0?ie=3DUTF8&psc=3D1
>> =
http://www.amazon.com/gp/product/B00M55C0NS/ref=3Doh_aui_detailpage_o04_s0=
0?ie=3DUTF8&psc=3D1
>> =
http://www.amazon.com/gp/product/B00IVPU7DQ/ref=3Doh_aui_detailpage_o03_s0=
0?ie=3DUTF8&psc=3D1
>> =
http://www.amazon.com/gp/product/B003WIRFD2/ref=3Doh_aui_detailpage_o01_s0=
0?ie=3DUTF8&psc=3D1
>>=20
>> None of them will boot FreeBSD at high speed and I have seen SD =
related=20
>> panics with 3 of them (so far) at low speed.
>=20
> I would actually dispute that this one is an sd-related panic, unless
> you have messages about gvfs_iodone failures on the console before the
> panic.  Otherwise this is more likely another memory corruption =
problem
> similar to the panics being reported on wandboard.

The RPi is also sensitive to power. I=92ve seen weird corruption like =
this when I tried to run
my RPi off a battery and the battery was getting weak...

Warner

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