[Xen-devel] xen unstable crashes ...

[Gerd Knorr <kraxel@xxxxxxxxxxx>]

... when built with optimize=n debug=y

I get first a line like this one:

  (XEN) (file=extable.c, line=76) Pre-exception: ff105b48 -> 00000000

Then xen dies because of a page fault in IRQ context:

  [ ... ]
  (XEN) CPU0 FATAL TRAP 14 (page fault), ERROR_CODE 0002, IN INTERRUPT CONTEXT.

ff105b48 is _not_ the start address of some instruction, it's
somewhere inbetween:

  ff105b45:       f0 0f ab 02             lock bts %eax,(%edx)
  ff105b49:       19 c0                   sbb    %eax,%eax

Without "debug=y" xen boots just fine.  This is x86_32.

  Gerd


-- 
-mm seems unusually stable at present.
        -- akpm about 2.6.12-rc3-mm3

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