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[Xen-devel] xend crashes

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] xend crashes
From: Arun Sharma <arun.sharma@xxxxxxxxx>
Date: Fri, 19 Aug 2005 14:49:27 -0700
Delivery-date: Fri, 19 Aug 2005 21:47:39 +0000
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I started noticing xend crashes after a misconfiguration of xmdefconfig around the time the xenstore changes went in. There seems to be some native code which doesn't seem to check for null pointers.

Traceback (most recent call last):
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 564, in construct
  File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 965, in configure
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 794, in create_devices
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 783, in create_configu
    self.createDevice(ctrl_type, dev_config)
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 392, in createDevice
    backdb = backdom.db.addChild("/backend/%s/%s/%d" %
TypeError: int argument required
<xend crash>

The crash seems to happen after releaseDomain.

[2005-08-19 16:23:35 xend] WARNING (XendDomainInfo:993) Unknown config field vnc [2005-08-19 16:23:35 xend] DEBUG (blkif:24) exception looking up device number f
or ioemu:hda: [Errno 2] No such file or directory: '/dev/ioemu:hda'
[2005-08-19 16:23:35 xend] INFO (xsobj:337) DBMap>releaseDomain> 1

gdb doesn't seem to be helpful.

0xfbffd402 in ?? ()
(gdb) c
[New Thread -1255515216 (LWP 4824)]
(XEN) audit1
(XEN) audit1 done
(XEN) audit2
(XEN) audit2 done
(XEN) audit3
(XEN) audit3 done
Couldn't get registers: No such process.
(gdb) x /i $eip
Cannot fetch general-purpose registers for thread -1247122512: generic error


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