Discussion:
netbsd5-rc3 crash caused by isc_dhcrelay
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6***@6bone.informatik.uni-leipzig.de
2009-04-16 12:07:27 UTC
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hello,

I am using netbsd5-rc3 and isc_dhcrelay version 4.1.0.
After starting isc_dhcrelay with the options

isc_dhcrelay -6 -l vlan8 -l vlan14 -l vlan20 -u agr0

the server waits until the first request and crashs with a reboot.


Any ideas what the problem could be?


Thank you for your efforts
Uwe

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Joerg Sonnenberger
2009-04-16 12:30:09 UTC
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Post by 6***@6bone.informatik.uni-leipzig.de
the server waits until the first request and crashs with a reboot.
Please set ddb.onpanic=1 and get a backtrace.

Joerg

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Martin Husemann
2009-04-16 13:09:17 UTC
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Post by 6***@6bone.informatik.uni-leipzig.de
the server waits until the first request and crashs with a reboot.
Did you get a kernel crash dump (in /var/crash)?

Martin

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6***@6bone.informatik.uni-leipzig.de
2009-04-16 17:22:29 UTC
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Post by Martin Husemann
Did you get a kernel crash dump (in /var/crash)?
sorry, no crash dump in /var/crash. savecore only shows:

bash-4.0# /etc/rc.d/savecore start
Checking for core dump...
savecore: warning: (null) version mismatch:
NetBSD 5.0_RC4 (MYCONF) #0: Thu Apr 16 14:24:51 CEST 2009

***@gate.ipv6.uni-leipzig.de:/usr/obj/sys/arch/amd64/compile/MYCONF

and

savecore: reboot after panic: panic: trap
savecore: system went down at Thu Apr 16 19:11:37 2009
savecore: (null): Bad address
bash-4.0#

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6***@6bone.informatik.uni-leipzig.de
2009-04-17 07:39:29 UTC
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Post by Joerg Sonnenberger
Please set ddb.onpanic=1 and get a backtrace
the backtrace is only available as jpg image:

Loading Image...


Uwe

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Matthias Drochner
2009-04-17 12:31:45 UTC
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Does this help?
(sizeof in6_pktinfo is not a multiple of 8, so CMSG_ALIGN makes
it larger and m_len gan drop below 0)

best regards
Matthias





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6***@6bone.informatik.uni-leipzig.de
2009-04-18 12:05:14 UTC
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the patch solves the problem.

thank you for your efforts


Uwe

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6***@6bone.informatik.uni-leipzig.de
2009-04-20 05:53:09 UTC
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hello,

I am using netbsd5-rc4 and pim6sd.
If you try to stop the pim6sd process the kernel crashs.

kernel-trace: Loading Image...

How to repeat: send a SIGTERM to pim6sd


Any ideas what the problem could be?



Thank you for your efforts
Uwe

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Matthias Drochner
2009-04-20 17:19:20 UTC
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Post by 6***@6bone.informatik.uni-leipzig.de
If you try to stop the pim6sd process the kernel crashs.
At a first glance, this looks like recursive locking
against softnet_lock.
I don't know The Plan how locking is supposed to work here,
so I'll leave the fix to those who do.

best regards
Matthias




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Forschungszentrum Juelich GmbH
52425 Juelich

Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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