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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Andrew Morton <akpm@osdl.org>
Subject: 2.6.16-rc5-mm3: spinlock bad magic on CPU#0 on AMD64
Date: Sun, 12 Mar 2006 00:24:04 +0100
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       Andi Kleen <ak@suse.de>
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Hi,

With the 2.6.16-rc5-mm3 kernel w/ the patch

revert-x86_64-mm-i386-early-alignment.patch

applied I'm able to hang my box (Asus L5D, 1 CPU, x86-64 kernel) solid
by running OpenOffice.org from under KDE (100% of the time but on one
user account only).  Before it hangs I get something like this on the serial console:

BUG: spinlock bad magic on CPU#0, soffice.bin/5293
 lock: ffff81005e174e28, .magic: 000001ff, .owner: .5).@4).06)./0, .owner_cpu: -2141827648
BUG: spinlock lockup on CPU#0, soffice.bin/5293, ffff81005e174e28

Greetings,
Rafael