RPI-B VM panic
Michael Tuexen
tuexen at freebsd.org
Thu Jun 12 18:44:09 UTC 2014
On 12 Jun 2014, at 08:06, Hans Petter Selasky <hps at selasky.org> wrote:
> On 06/11/14 22:51, Michael Tuexen wrote:
>> On 11 Jun 2014, at 21:59, Hans Petter Selasky <hps at selasky.org> wrote:
>>
>>> On 06/06/14 09:41, Hans Petter Selasky wrote:
>>>> Hi,
>>>>
>>>> I'm seeing this with RPI-B:
>>>>
>>>> panic: vm_page_insert_after: msucc doesn't succeed pindex
>>>> KDB: enter: panic
>>>> [ thread pid 18 tid 100052 ]
>>>> Stopped at $d: ldrb r15, [r15, r15, ror r15]!
>>>> db>
>>>>
>>>>
>>>> Any ideas?
>> Which revision are you using? What is triggering the panic? I could
>> try to reproduce the problem.
>>
>> I've used r267055 with reverted r266083 for a couple of days and
>> it was running stable. It compiled a lot of ports including wireshark.
>>
>
> Hi,
>
> I'm running -current with a patch reverted for the CPU counter. It happens around growfs. The error is not constant. If I change the boot timing by plugging more USB devices, then I sometimes can pass
I haven't it experienced. I normally grow the filesystem from 1 GB to 16 GB after
installation and I have not connected any USP device. I'm normally booting it
using a serial cable, no monitor, no keyboard, no mouse attached.
Best regards
Michael
> the point of error. I think the problem is related to the following commit:
>
>> commit 7d20e37fb658b0e2cd7f3c13dac8022e0e866a21
>> Author: alc <alc at FreeBSD.org>
>> Date: Sun May 12 16:50:18 2013 +0000
>>
>> Refactor vm_page_alloc()'s interactions with vm_reserv_alloc_page() and
>> vm_page_insert() so that (1) vm_radix_lookup_le() is never called while the
>> free page queues lock is held and (2) vm_radix_lookup_le() is called at most
>> once. This change reduces the average time that the free page queues lock
>> is held by vm_page_alloc() as well as vm_page_alloc()'s average overall
>> running time.
>>
>> Sponsored by: EMC / Isilon Storage Division
>>
>
> Looks like we are trying to grow the stack and then the pages are not in the expected order.
>
> --HPS
>
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