The kernel crashes with "PANIC: Oops: 0002 [<a href="http://bugs.centos.org/view.php?id=1">0000001</a>] SMP (check log for details)" and from kdump/crash: "BUG: unable to handle kernel NULL pointer dereference at 0000000000000008" whenever two NFS volumes are mounted, one via nfs v3 and the other nfs v4, then either nfs mount is accessed (even an ls command will do it). It is 100% reproducible. If I mount both with "nfsvers=3" I've only had a single crash which I've not been able to reproduce, but I have the vmcore from that one too. <br />
Kernel: 2.6.32-431.23.3.e16.x86_64
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