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Re: [Xen-devel] Infinite loop on reboot with 3.0.3 and crash_debug=y

  • To: Chris Lalancette <clalance@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • Date: Wed, 04 Oct 2006 08:49:55 +0100
  • Delivery-date: Wed, 04 Oct 2006 01:00:49 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acbnia5z7UDJ0FN8EduVNgANk04WTA==
  • Thread-topic: [Xen-devel] Infinite loop on reboot with 3.0.3 and crash_debug=y

On 3/10/06 10:06 pm, "Chris Lalancette" <clalance@xxxxxxxxxx> wrote:

> But because the dom0 has gone away, we are not in guest mode anymore, and so
> we hit the panic.  The panic is handled in drivers/char/console.c, which has
> another call to debugger_trap_immediate, which generates the int3, which gets
> us into the infinite loop.  Reverting the change noted above goes back to the
> old behavior (i.e. actually rebooting :).  I'm tempted to say the
> debugger_trap_immediate has no business being in the panic function, but I'd
> like to hear other opinions on it.

There was previosuly special-case code for int3 in the debugger_trap macros.
I should add it back in. Also, Muli is correct that unconditional debugger
trap in dom0_shutdown is overkill.

 -- Keir

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