Re: [Xen-devel] Re: BUG: x86-64 VT crash backtrace

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 25 Jul 2006, at 17:55, Rik van Riel wrote:

> > here is the x86-64 VT crash backtrace, as promised.  I can trigger it 
> > within minutes by simply starting up a 64 bit VT domain on a 64 bit 
> > system.
> And another, more creative one.  It seems to have bitmap_subset
> in common with the first backtrace, and the assertion looks like
> it could be a useful hint:
Looks like another stack overflow. I think maybe the double-fault 
handling is broken and that caused the assertion. What xen-unstable 
changeset are you running on?
 -- Keir

> (XEN) (file=extable.c, line=77) Pre-exception: ffff830000153d1d -> 
> 0000000000000000
> (XEN) ----[ Xen-3.0-unstable    Not tainted ]----
> (XEN) CPU:    0
> (XEN) RIP:    e010:[<ffff830000153d1d>] bitmap_subset+0x30/0x9d
> (XEN) RFLAGS: 0000000000010046   CONTEXT: hypervisor
> (XEN) rax: fffffffffffffffc   rbx: ffff8300002230b8   rcx: 
> 0000000000000000
> (XEN) rdx: 0000000000000002   rsi: ffff83000024db08   rdi: 
> ffff830000223060
> (XEN) rbp: ffff830000223018   rsp: ffff830000222fe8   r8:  
> 0000000000000000
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