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Re: [Xen-devel] XL: pv guests dont reboot after migration (xen-4.1.2-rc3) libc-2.11.2 segfault



Hi all.

If you recall i created a similar discussion last month and working patches were replied and tested.


Now i finally got around to updating my systems to the latest testing release and it would seem something else is preventing a clean reboot now.

pv guests dont reboot after migration,
just when xl should reboot the machine syslog shows:


Oct 15 02:46:32 netcatarina kernel: xl[14986]: segfault at 7f0ec70a3008 ip 00007f0ec7d517f9 sp 00007fff366cf100 error 4 in libc-2.11.2.so[7f0ec7cdb000+158000]



I am running debian squueze and havent made any changes to it since
4.1.2-rc2-pre with the patches from my previous thread worked fine.


root@netcatarina:~# locate libc-2.
/lib/libc-2.11.2.so
/lib32/libc-2.11.2.so
root@netcatarina:~# dpkg -l |grep libc6
ii libc6 2.11.2-10 Embedded GNU C Library: Shared libraries ii libc6-dev 2.11.2-10 Embedded GNU C Library: Development Libraries and Header Files ii libc6-i386 2.11.2-10 Embedded GNU C Library: 32-bit shared libraries for AMD64
root@netcatarina:~# ldd /usr/sbin/xl
        linux-vdso.so.1 =>  (0x00007fffa33c9000)
        libxlutil.so.1.0 => /usr/lib/libxlutil.so.1.0 (0x00007f6815a23000)
        libxenlight.so.1.0 => /usr/lib/libxenlight.so.1.0 (0x00007f68157fb000)
        libxenctrl.so.4.0 => /usr/lib/libxenctrl.so.4.0 (0x00007f68155d8000)
        libdl.so.2 => /lib/libdl.so.2 (0x00007f68153d4000)
        libxenguest.so.4.0 => /usr/lib/libxenguest.so.4.0 (0x00007f68151af000)
        libxenstore.so.3.0 => /usr/lib/libxenstore.so.3.0 (0x00007f6814fa5000)
        libblktapctl.so.1.0 => /usr/lib/libblktapctl.so.1.0 (0x00007f6814d9e000)
        libutil.so.1 => /lib/libutil.so.1 (0x00007f6814b9b000)
        libuuid.so.1 => /lib/libuuid.so.1 (0x00007f6814996000)
        libc.so.6 => /lib/libc.so.6 (0x00007f6814635000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x00007f6814419000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f6815c32000)
        libz.so.1 => /usr/lib/libz.so.1 (0x00007f6814201000)

root@netcatarina:~# ls -la /lib/libc.so.6
lrwxrwxrwx 1 root root 14 May 23 13:04 /lib/libc.so.6 -> libc-2.11.2.so

So its not the fact that i do have a additional 32bit version installed (this is a 64bit system).



This patch is the main reason i even bothered to update the servers so it would be nice if you could post a patch to this problem as well.

It happens more frequently than i would like that people reboot their servers. And since i migrate them to a different server when i do maintenance this problem pretty much affects all of my 60 virtual machines.



With best regards


---
Andreas

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