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[Xen-devel] vm crashed due to signal 11

Hi ,

Besides signal 7 crash, we also encounter a signal 11 crash in our
enviroment with xen 4.0.1 .
We start about 10~15 VMs at the same time and stop them after about 15
minutes repeately.

The xml file of our VMs is like this
<domain type='xen' id='274'>
 <vcpu cpuset='1-3'>1</vcpu>
   <boot dev='hd'/>
 <clock offset='utc'/>
   <disk type='file' device='disk'>
     <driver name='file'/>
     <source file='/07dbc62b-3bd7-41d7-865a-6632019e2f2b'/>
     <target dev='hda' bus='ide'/>
   <interface type='bridge'>
     <mac address='00:16:3e:00:01:00'/>
     <source bridge='teprod'/>
     <script path='/etc/xen/scripts/vif-bridge'/>
     <target dev='vif274.0'/>
     <model type='e1000'/>
   <serial type='pty'>
     <source path='/dev/pts/3'/>
     <target port='0'/>
   <console type='pty' tty='/dev/pts/3'>
     <source path='/dev/pts/3'/>
     <target type='serial' port='0'/>
   <input type='tablet' bus='usb'/>
   <input type='mouse' bus='ps2'/>
   <graphics type='vnc' port='5903' autoport='yes' keymap='en-us'/>

We try to use the core dump file of qemu-dm and gdb to find the root
cause, it shows

#0  0x00007fba3c8e0553 in select () from /lib64/libc.so.6
#1  0x00000000004088e9 in main_loop_wait (timeout=<value optimized
out>) at /root/rpmbuild/BUILD/xen-4.0.1/tools/ioemu-dir/vl.c:3782
#2  0x000000000047798a in main_loop () at helper2.c:576
#3  0x000000000040ccd1 in main (argc=<value optimized out>,
argv=<value optimized out>, envp=<value optimized out>)
    at /root/rpmbuild/BUILD/xen-4.0.1/tools/ioemu-dir/vl.c:6150

Is this a known issue or is there any patch to fix it?


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