[OpenAFS] Re: kernel panic in 1.4.14.1 on rhel6
Aaron Knister
aaronk@umbc.edu
Thu, 11 Aug 2011 13:13:57 -0400
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For what it's worth, the panic doesn't occur in 1.6.0pre7 even with repeated
hammering with ab.
On Thu, Aug 11, 2011 at 10:11 AM, Aaron Knister <aaronk@umbc.edu> wrote:
> I know everyone's busy, but out of curiosity has anybody had a chance to
> look at this? Could it be that it's not even an AFS bug, but a linux kernel
> issue? I'm getting ready to put a webserver into production and am concerned
> because I can reliably trigger the mentioned kernel panic using "ab".
>
> Thanks,
> -Aaron
>
>
> On Wed, Jul 27, 2011 at 4:59 PM, Aaron Knister <aaronk@umbc.edu> wrote:
>
>> On Wed, Jul 27, 2011 at 4:37 PM, Andrew Deason <adeason@sinenomine.net>wrote:
>>
>>> On Wed, 27 Jul 2011 15:25:15 -0400
>>> Aaron Knister <aaronk@umbc.edu> wrote:
>>>
>>> > Hi Andrew,
>>> >
>>> > Here's the output of the last few, what I think are relavent lines:
>>>
>>> Well, this is basically the same information as you originally gave.
>>> There's nothing else around these, or immediately before?
>>>
>>
>> The lines preceding what I originally sent are:
>>
>> openafs: module license 'http://www.openafs.org/dl/license10.html' taints
>> kernel.
>> Disabling lock debugging due to kernel taint
>> enabling dynamically allocated vcaches
>> Starting AFS cache scan...found 993 non-empty cache files (31%).
>> eth0: no IPv6 routers present
>> general protection fault: 0000 [#1] SMP
>>
>> I don't know if that's any more helpful.
>>
>>
>>>
>>> Also, could you run in crash
>>>
>>> dis rxi_NewCall
>>> dis rxi_ResetCall
>>> dis mutex_lock
>>>
>>>
>> Here's a link to a directory containing the output of those commands:
>> http://userpages.umbc.edu/~aaronk/afs/linux-kernel-panic/.
>>
>> Thanks,
>> -Aaron
>>
>>
>>> and put the result somewhere? (It's probably a bit large for the list)
>>>
>>> --
>>> Andrew Deason
>>> adeason@sinenomine.net
>>>
>>> _______________________________________________
>>> OpenAFS-info mailing list
>>> OpenAFS-info@openafs.org
>>> https://lists.openafs.org/mailman/listinfo/openafs-info
>>>
>>
>>
>>
>> --
>> Aaron Knister
>> Systems Administrator
>> Division of Information Technology
>> University of Maryland, Baltimore County
>> aaronk@umbc.edu
>>
>
>
>
> --
> Aaron Knister
> Systems Administrator
> Division of Information Technology
> University of Maryland, Baltimore County
> aaronk@umbc.edu
>
--
Aaron Knister
Systems Administrator
Division of Information Technology
University of Maryland, Baltimore County
aaronk@umbc.edu
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For what it's worth, the panic doesn't occur in 1.6.0pre7 even with=
repeated hammering with ab.<br><br><div class=3D"gmail_quote">On Thu, Aug =
11, 2011 at 10:11 AM, Aaron Knister <span dir=3D"ltr"><<a href=3D"mailto=
:aaronk@umbc.edu" target=3D"_blank">aaronk@umbc.edu</a>></span> wrote:<b=
r>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">I know everyone's busy, but out of curio=
sity has anybody had a chance to look at this? Could it be that it's no=
t even an AFS bug, but a linux kernel issue? I'm getting ready to put a=
webserver into production and am concerned because I can reliably trigger =
the mentioned kernel panic using "ab".<div>
<br></div><div>Thanks,<div>-Aaron<div><div></div><div><br><br><div class=3D=
"gmail_quote">On Wed, Jul 27, 2011 at 4:59 PM, Aaron Knister <span dir=3D"l=
tr"><<a href=3D"mailto:aaronk@umbc.edu" target=3D"_blank">aaronk@umbc.ed=
u</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div>On Wed, Jul 27, 2011 at 4:37 PM, Andrew Deason <span dir=3D"ltr"><<=
a href=3D"mailto:adeason@sinenomine.net" target=3D"_blank">adeason@sinenomi=
ne.net</a>></span> wrote:<br></div><div class=3D"gmail_quote"><div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div>On Wed, 27 Jul 2011 15:25:15 -0400<br>
Aaron Knister <<a href=3D"mailto:aaronk@umbc.edu" target=3D"_blank">aaro=
nk@umbc.edu</a>> wrote:<br>
<br>
> Hi Andrew,<br>
><br>
> Here's the output of the last few, what I think are relavent lines=
:<br>
<br>
</div>Well, this is basically the same information as you originally gave.<=
br>
There's nothing else around these, or immediately before?<br></blockquo=
te><div><br></div></div><div>The lines=A0preceding=A0what I originally sent=
are:</div><div><br></div><div><div>openafs: module license '<a href=3D=
"http://www.openafs.org/dl/license10.html" target=3D"_blank">http://www.ope=
nafs.org/dl/license10.html</a>' taints kernel.</div>
<div>Disabling lock debugging due to kernel taint</div><div>enabling dynami=
cally allocated vcaches</div><div>Starting AFS cache scan...found 993 non-e=
mpty cache files (31%).</div><div>eth0: no IPv6 routers present</div><div>
general protection fault: 0000 [#1] SMP=A0</div></div><div><br></div><div>I=
don't know if that's any more helpful.</div><div><div>=A0</div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex">
<br>
Also, could you run in crash<br>
<br>
dis rxi_NewCall<br>
dis rxi_ResetCall<br>
dis mutex_lock<br>
<br></blockquote><div><br></div></div><div>Here's a link to a directory=
containing the output of those commands:=A0<a href=3D"http://userpages.umb=
c.edu/~aaronk/afs/linux-kernel-panic/" target=3D"_blank">http://userpages.u=
mbc.edu/~aaronk/afs/linux-kernel-panic/</a>.</div>
<div><br></div><div>Thanks,</div><div>-Aaron</div><div><div>=A0</div><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
solid;padding-left:1ex">
and put the result somewhere? (It's probably a bit large for the list)<=
br>
<font color=3D"#888888"><br>
--<br>
</font><div><div></div><div>Andrew Deason<br>
<a href=3D"mailto:adeason@sinenomine.net" target=3D"_blank">adeason@sinenom=
ine.net</a><br>
<br>
_______________________________________________<br>
OpenAFS-info mailing list<br>
<a href=3D"mailto:OpenAFS-info@openafs.org" target=3D"_blank">OpenAFS-info@=
openafs.org</a><br>
<a href=3D"https://lists.openafs.org/mailman/listinfo/openafs-info" target=
=3D"_blank">https://lists.openafs.org/mailman/listinfo/openafs-info</a><br>
</div></div></blockquote></div></div><br><br clear=3D"all"><div><div></div>=
<div><br>-- <br>Aaron Knister<br>Systems Administrator<br>Division of Infor=
mation Technology<br>University of Maryland, Baltimore County<br>
<a href=3D"mailto:aaronk@umbc.edu" target=3D"_blank">aaronk@umbc.edu</a><br=
>
</div></div></blockquote></div><br><br clear=3D"all"><br>-- <br>Aaron Knist=
er<br>Systems Administrator<br>Division of Information Technology<br>Univer=
sity of Maryland, Baltimore County<br><a href=3D"mailto:aaronk@umbc.edu" ta=
rget=3D"_blank">aaronk@umbc.edu</a><br>
</div></div></div></div>
</blockquote></div><br><br clear=3D"all"><br>-- <br>Aaron Knister<br>System=
s Administrator<br>Division of Information Technology<br>University of Mary=
land, Baltimore County<br><a href=3D"mailto:aaronk@umbc.edu" target=3D"_bla=
nk">aaronk@umbc.edu</a><br>
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