Re: port-amd64/39283: Kernel crash on Dell Poweredge 2950

[fredrik%netbsd.se@localhost]

> Hello,
>
>>  > Synopsis: 4.99.71 crashed after about 3-4 days when running MP-kernel
>>  >
>>  > State-Changed-From-To: open->feedback
>>  > State-Changed-By: dsl%NetBSD.org@localhost
>>  > State-Changed-When: Fri, 06 Nov 2009 22:49:43 +0000
>>  > State-Changed-Why:
>>  > Any further info ??
>>
>>  No more than the info that we put in the PR and on the mailing lists:
>>
>>  http://archive.netbsd.se/?ml=netbsd-current-users&a=2008-07&t=7775691
>>  http://archive.netbsd.se/?ml=port-amd64&a=2009-02&t=9259482
>>
>>  The server crashed every 8'th day on SP-kernel and every 24'th hour
>> with
>>  MP-kernel. The problem has evolved with NetBSD releases, these days
>> it's
>>  "only" the filesystem that seems to hang and no i/o is possible without
>>  reboot, if it runs to long without reboot is eventually crashed.
>
> Seems there is not yet enough information to figure out where bug is
> hiding.
> Also, it the only problem report with such symptoms, but if it is
> happening
> consistently and crashing the same way - unlikely to be a hardware
> problem.
>
> http://mail-index.netbsd.org/port-amd64/2008/12/19/msg000684.html
>
> Looking at the data from your email, there is callback_run_roundrobin()
> which
> calls a function pointer, but it is very unlikely to be NULL.  I have
> added an
> assert, "just in case":
>
> http://mail-index.netbsd.org/source-changes/2009/11/24/msg003498.html
>
> Would you be able to try -current kernel, with that change in the link,
> and
> with the following debug options:
>
> options DIAGNOSTIC
> options DEBUG
> makeoptions DEBUG="-g -fno-omit-frame-pointer"
>
> Then repeat x/Lx and x/I dance again.  But no LOCKDEBUG option, as it
> might
> avoid some overhead and hopefully get stack dump a little bit more
> readable.
> Additionally, 'show uvm' output from DDB might be useful.
>
> Thanks.
>
> --
> Mindaugas
>

Hi,

Thanks for the response.

We will try a current kernel tonight and report back with the result.

Regards
Fredrik