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[Xen-bugs] [Bug 858] gcc 4.2 compiled Xen freezes domU forever

To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] [Bug 858] gcc 4.2 compiled Xen freezes domU forever
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Fri, 6 Jul 2007 12:11:18 -0700
Delivery-date: Fri, 06 Jul 2007 12:12:27 -0700
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ccoffing@xxxxxxxxxx changed:

           What    |Removed                     |Added
          Component|Hypervisor                  |Tools

------- Comment #1 from ccoffing@xxxxxxxxxx  2007-07-06 12:10 -------
I can reproduce this.  It seems to be a miscompilation of libxenstore.so when
optimizations are -O2 on gcc 4.2.x.

I'm building xen-3.1.0 on openSUSE 10.3 alpha5+ (which just got updated to gcc

It seems that libxenstore.so.3.0.0 is getting miscompiled.  If I build all of
xen and tools with gcc 4.2.1, but back-rev libxenstore.so.3.0.0 to a version
built with gcc 4.1.3, it works.  Or, if I build libxenstore.so with "-O" rather
than the default of "-O2", it also works.

Seems that qemu-dm is blocking on some xenstore call.

Will post more when I learn more....

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