From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [PATCH] fix stubdom memory corruption
Date: Wed, 15 Apr 2009 14:37:03 +0100
Message-ID: <49E5E2FF.3060401@eu.citrix.com>
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Boris Derzhavets wrote:

> root@ServerXen331:/etc/xen# xm list
> Name                                        ID   Mem VCPUs      State  
> Time(s)
> Domain-0                                   0  7019     2     r-----    702.0
> RHELhvm                                   7  1024     1     ------      0.0
> 
> ************************
> Three logs generated
> ************************
> 
> root@ServerXen331:/var/log/xen# cat qemu-dm-RHELhvm-dm.log
> domid: 9
> Warning: vlan 0 is not connected to host network
> Watching /local/domain/0/device-model/9/logdirty/next-active
> Watching /local/domain/0/device-model/9/command
> char device redirected to /dev/pts/3
> /usr/src/xen-unstable.hg/tools/ioemu-dir/hw/xen_blktap.c:628: Init
> blktap pipes
> xs_read(): vncpasswd get error.
> /vm/3f8762a5-b806-dca4-6442-0dfeb7da0917/vncpasswd.
> medium change watch on `hdc' (index: 0): /dev/loop0
> root@ServerXen331:/var/log/xen# cat qemu-dm-RHELhvm-dm.log.1
> domid: 8
> Warning: vlan 0 is not connected to host network
> Watching /local/domain/0/device-model/8/logdirty/next-active
> Watching /local/domain/0/device-model/8/command
> char device redirected to /dev/pts/3
> /usr/src/xen-unstable.hg/tools/ioemu-dir/hw/xen_blktap.c:628: Init
> blktap pipes
> xs_read(): vncpasswd get error.
> /vm/3f8762a5-b806-dca4-6442-0dfeb7da0917/vncpasswd.
> medium change watch on `hdc' (index: 0): /dev/loop0
> root@ServerXen331:/var/log/xen# cat  qemu-dm-RHELhvm.log
> Using config file "/etc/xen/RHELhvm-dm".
> Started domain RHELhvm-dm (id=8)
> Using config file "/etc/xen/RHELhvm-dm".
> Unexpected error: <type 'exceptions.OSError'>
> 
> Please report to xen-devel@lists.xensource.com
> Traceback (most recent call last):
>   File "/usr/sbin/xm", line 7, in <module>
>     main.main(sys.argv)
>   File "usr/lib/python2.5/site-packages/xen/xm/main.py", line 2980, in main
>     _, rc = _run_cmd(cmd, cmd_name, args)
>   File "usr/lib/python2.5/site-packages/xen/xm/main.py", line 3004, in
> _run_cmd
>     return True, cmd(args)
>   File "<string>", line 1, in <lambda>
>   File "usr/lib/python2.5/site-packages/xen/xm/main.py", line 1360, in
> xm_importcommand
>     cmd.main([command] + args)
>   File "usr/lib/python2.5/site-packages/xen/xm/create.py", line 1370, in
> main
>     do_console(sxp.child_value(config, 'name', -1))
>   File "usr/lib/python2.5/site-packages/xen/xm/create.py", line 1397, in
> do_console
>     (p, rv) = os.waitpid(cpid, os.WNOHANG)
> OSError: [Errno 10] No child processes

If this is the only error you get, it seems to be unrelated to stubdoms.
Could you please try to start a stubdom without autoconnect (no -c)?