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[Xen-users] xenstore-write segfault

from [Aaditya kumar] [Permanent Link][Original]
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] xenstore-write segfault
From: Aaditya kumar <passion.for.systems@xxxxxxxxx>
Date: Mon, 12 Jul 2010 16:12:37 +0530
Delivery-date: Mon, 12 Jul 2010 03:43:54 -0700
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Hi All ,
         I am using xen 3.2.0 which i have built form source ,I could
initially boot Dom 0 and some DomUs.
         But today when i tried to boot a DomU with birdge enabled it
didnt work giving an error ....

         Error: Device 0 (vif) could not be connected. Hotplug scripts
not working.

         After that I checked my var/log/messages and It gave lots of
xenstore-write segfault,exact error is attached iniline.

Jul 12 07:26:46 centosxcat2 kernel: xenstore-read[16643]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff2036def8 error 4

          Now I dont know whether segfault error were caused by first
error or they are independent , I think they occured after
          i tried to create domU with bridge networking.

           And also this error (segfault) is occurring continuously
without stop and filling up the var/log/messages.
          Can someone explain why is these errors are coming ?
          And how can I remove them ...

Domu config file

kernel = "/boot/vmlinuz-2.6.18.8-xenU"
ramdisk = "/boot/initrd-2.6.18.8-xenU.img"
memory = 256
name = "u2"
vif = [ '', 'bridge=xenbr1' ]
root = "/dev/sda2"
extra = "4"

/var/log/xen/xen-hotplug.log contains continious line like these (It
is 1GB file ) (last line is interesting)

backend/vbd/3/ 2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore
failed. backend/vbd/3/2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-tatus
                                 error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore failed.
backend/vbd/3/ 2049/hotplug-status error to xenstore failed.
backend/vbd/3/2049/hotplug-status error to xenstore.
/etc/xen/scripts/xen-hotplug-common.sh: line 89:
/usr/bin/xenstore-write: Argument list too long



The part of /var/log/messages

Jul 11 12:19:10 centosxcat2 yum: Installed: 12:dhcp-3.0.5-23.el5.x86_64
Jul 11 12:48:50 centosxcat2 kernel: Ebtables v2.0 registered
Jul 12 04:02:49 centosxcat2 init: Trying to re-exec init
Jul 12 07:26:46 centosxcat2 kernel: xenstore-read[16643]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff2036def8 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-read[16650]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff0513dcc8 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-read[16667]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff01e789b8 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16654]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffdaf53a78 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16679]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff9edae868 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16681]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffc57aa208 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16684]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffcf90e2f8 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16686]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff14c175a8 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16689]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff9a911238 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16694]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff8548fd48 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16697]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff0f416c68 error 4
Jul 12 07:26:46 centosxcat2 kernel: xenstore-write[16699]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffd2aae298 error 4
Jul 12 07:26:47 centosxcat2 kernel: device vif44.0 entered promiscuous mode
Jul 12 07:26:47 centosxcat2 kernel: device vif44.1 entered promiscuous mode
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16709]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff121418c8 error 4
Jul 12 07:26:47 centosxcat2 kernel: eth1: port 2(vif44.0) entering
learning state
Jul 12 07:26:47 centosxcat2 kernel: eth1: port 3(vif44.1) entering
learning state
Jul 12 07:26:47 centosxcat2 kernel: eth1: topology change detected, propagating
Jul 12 07:26:47 centosxcat2 kernel: eth1: port 3(vif44.1) entering
forwarding state
Jul 12 07:26:47 centosxcat2 kernel: eth1: topology change detected, propagating
Jul 12 07:26:47 centosxcat2 kernel: eth1: port 2(vif44.0) entering
forwarding state
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16727]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff6ade6508 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16738]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffaca5d118 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16740]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff1ae909b8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16768]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff4e7802a8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16767]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff913b1e68 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16772]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffd643def8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16773]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff6d713d68 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16771]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffe5be5638 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16777]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffec374dc8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16778]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff585effe8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16781]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff50ac34b8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16783]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff961bab58 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16784]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff6c5d4bc8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16788]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff2396e2a8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16787]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffcf33fcd8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16791]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff89566e98 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16793]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff170225a8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16795]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffec1d8aa8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16796]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff2ee4d728 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16799]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff0a2fcb78 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16801]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff95555dc8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16804]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff59b36348 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16803]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffa5ad82e8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16805]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff7b9aeec8 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16809]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff4c8a0058 error 4
Jul 12 07:26:47 centosxcat2 kernel: xenstore-write[16811]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fffacb69318 error 4
Jul 12 07:26:48 centosxcat2 kernel: xenstore-write[16813]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007ffff0504c58 error 4
Jul 12 07:26:48 centosxcat2 kernel: xenstore-write[16815]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff86ba6058 error 4
Jul 12 07:26:48 centosxcat2 kernel: xenstore-write[16817]: segfault at
0000000000000000 rip 0000000000000000 rsp 00007fff80c2b378 error 4




ifconfig shows following devices
eth0
eth1
lo
peth1
virbr0



-- 
Regards ,
Aaditya.

I want to change the world ,But God won't give me the source code.

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