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    |   xen-users
Re: [Xen-users] FreeBSD DomU Fatal trap 12 in cpu_switch_load_gs 
| This is a bug that I had thought that I had fixed. I haven't done
anything with 5.3 on 2.0.7 in quite some time. Up until the xenbus
changes I was tracking 3.0 and was going to check into 6.0 CVS. 
 I ended up taking a break after xenbus went in. I didn't anticipate the
level of churn that came with the xenbus changes.  However,
judging from the 6-month slip in the planned release date of 3.0, no
one else did either.
 
 Is this a pre-built binary? Or one that you compiled? If it is one that
you compiled then your best bet may be waiting until FreeBSD works on
3.0 again. I'd like to say soon, but it isn't at the front of my
current queue.
 
 -Kip
 
 
 
 
 On 11/9/05, Geoff Buckingham <geoffb@xxxxxxxxxxxxxxxxxxx> wrote:
I see the following with a FreeBSD 5.3 DomU on 2.0.7
 Fatal trap 12: page fault while in kernel mode
 fault virtual address   = 0xca7a0088
 fault
code              =
supervisor read, page not present
 instruction pointer     = 0x819:0xc0183343
 stack pointer           = 0x821:0xca069d30
 frame pointer           = 0x821:0x0
 code segment            = base 0x235, limit 0x8485e7c3, type 0x9
 =
DPL 0, pres 1, def32 1, gran 0
 processor eflags        = interrupt enabled, resume, IOPL = 0
 current process         = 1943 (cc)
 trap number             = 12
 panic: page fault
 
 %nm -n XENUkernelNFS |grep c0183343
 c0183343 T cpu_switch_load_gs
 
 This is with a kernel compiled to run diskless over nfs and no kdb. With
 KDB enabled the machine just hangs (I assume the debugger is trying to
 attach to a non-existent serial port)
 
 Should
I be running 2.0.7 2.0-testing or 3.x to stand the best chance of
getting a stable FreeBSD DomU? Is this already fixed somewhere?
 
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