state of FreeBSD ARM (less stable than 6 months ago)

[Dan Raymond]

>> On Tue, 12 May 2015, Luiz Otavio O Souza wrote:
>>
>>> On 12 May 2015 at 00:47, Dan Raymond wrote:
>>>>
>>>> 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
>>
>> Luiz, the patch works for me.  Thanks!
>>
>> [Tested on BBB with a 2GB microSD that previously gave a WRITE timeout.]
>>
>> ...keith
>
> I was out of town for a few days but yesterday I tried the patch and I 
> was able to build my ports without a panic.  I'll continue to do some 
> more testing.
>

Now I hit a panic while running "restart" from a terminal:

panic: vm_page_unwire: page 0xc0c63e30's wire count is zero
cpuid = 1
KDB: enter: panic
[ thread pid 502 tid 100081 ]
Stopped at      $d.7:   ldrb   r15, [r15, r15, ror r15]!
db>