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Date:      Mon, 18 May 2015 15:26:38 -0400 (EDT)
From:      Keith White <kwhite@site.uottawa.ca>
To:        Luiz Otavio O Souza <lists.br@gmail.com>
Cc:        Dan Raymond <draymond@foxvalley.net>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: state of FreeBSD ARM (less stable than 6 months ago)
Message-ID:  <alpine.BSF.2.20.1505181523120.93723@localhost.my.domain>
In-Reply-To: <CAB=2f8zYShMH1P96MsdfP0ReMEwpkDJ%2Bq8dvMHHHjiMGmqnrqg@mail.gmail.com>
References:  <5550C252.6030001@foxvalley.net> <1431357226.2428197.265704673.6A544F74@webmail.messagingengine.com> <555177D9.8080001@foxvalley.net> <CAB=2f8zYShMH1P96MsdfP0ReMEwpkDJ%2Bq8dvMHHHjiMGmqnrqg@mail.gmail.com>

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On Tue, 12 May 2015, Luiz Otavio O Souza wrote:

> On 12 May 2015 at 00:47, Dan Raymond wrote:
>> On 5/11/2015 9:13 AM, Mark Felder wrote:
>>>
>>> On Mon, May 11, 2015, at 09:53, Dan Raymond wrote:
>>>>
>>>> I've been running an email and web server using FreeBSD 11 on a
>>>> Raspberry Pi B+ since November.  It has crashed 3 times since then
>>>> (roughly every two months).  I'm currently running r277334.  I thought
>>>> I'd try the latest build to see if stability has improved. I purchased a
>>>> Raspberry Pi 2 and used the latest crochet to built r282738.  No
>>>> problems building it and it booted up fine.  However, it crashes about
>>>> an hour into building some ports I use for my server (nginx, php,
>>>> etc.).  I tried twice last night and it crashed both times.  Is anybody
>>>> looking into these stability issues?
>>>>
>>> RPi2 support is something like less than a week old for SMP and DMA
>>> transport. I'm not sure more than a handful of people have actually
>>> tried it yet. The bugs here will be worked out in time, but if you have
>>> any core dumps or info that can assist in tracking down issues you're
>>> experiencing that would certainly be appreciated.
>>>
>>
>> These panics always seem to be mmcsd related.  I doubt it has anything to do
>> with RPi2 or SMP.
>>
>> sdhci_bcm0-slot0:  Controller timeout
>> sdhci_bcm0-slot0: ============== REGISTER DUMP ==============
>> sdhci_bcm0-slot0: Sys addr: 0x4d295a00 | Version:  0x00009902
>> sdhci_bcm0-slot0: Blk size: 0x00000200 | Blk cnt:  0x00000020
>> sdhci_bcm0-slot0: Argument: 0x002d19c0 | Trn mode: 0x0000193a
>> sdhci_bcm0-slot0: Present:  0x01ff0506 | Host ctl: 0x00000003
>> sdhci_bcm0-slot0: Power:    0x0000000f | Blk gap:  0x00000000
>> sdhci_bcm0-slot0: Wake-up:  0x00000000 | Clock:    0x00000507
>> sdhci_bcm0-slot0: Timeout:  0x0000000e | Int stat: 0x00000010
>> sdhci_b
>>
>>
>>
>> mmcsd0: Error indicated: 1 Timeout
>> g_vfs_done():mmcsd0s2a[WRITE(offset=1460830208, length=24576)]error = 5
>> panic: No b_bufobj 0xd767ca00
>> cpuid = 1
>> KDB: enter: panic
>> [ thread pid 12 tid 100013 ]
>> Stopped at      $d.7:   ldrb   r15, [r15, r15, ror r15]!
>> db>
>
> Hm, I have seen this already, it is the sdhci software timeout.
>
> The 'happens at night' part rings a bell for me.
>
> In my case it happened only with a card that has failed a few weeks
> later, so I thought it was a pre-fail case.
>
> But in certain cases (depending on the card) I think this timeout can
> be triggered with normal usage.
>
> Please try the attached patch and let me know if it works for you.
>
> Luiz
>
> Index: sys/dev/sdhci/sdhci.c
> ===================================================================
> --- sys/dev/sdhci/sdhci.c       (revision 282210)
> +++ sys/dev/sdhci/sdhci.c       (working copy)
> @@ -872,7 +872,7 @@
>        /* Start command. */
>        WR2(slot, SDHCI_COMMAND_FLAGS, (cmd->opcode << 8) | (flags & 0xff));
>        /* Start timeout callout. */
> -       callout_reset(&slot->timeout_callout, 2*hz, sdhci_timeout, slot);
> +       callout_reset(&slot->timeout_callout, 10*hz, sdhci_timeout, slot);
> }
>
> static void
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Luiz, the patch works for me.  Thanks!

[Tested on BBB with a 2GB microSD that previously gave a WRITE timeout.]

...keith






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