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Re: Panic on dom0 shutdown
Holidays intervened for a few days...
On Dec 20, 2012, at 20:41 , David Laight wrote:
> On Thu, Dec 20, 2012 at 07:39:18PM +0100, Manuel Bouyer wrote:
>> On Thu, Dec 20, 2012 at 06:42:14PM +0100, Johan Ihr?n wrote:
>>> I have a (reproducible) panic on shutdown, also recentish NetBSD 6 (kernel
>>> form december 16), but no raidframe. In my case it only panics on "halt
>>> -p", not on "halt" (100% reproducible). The trace is similar but not
>>> identical (this is by hand, no serial console available):
>>> kernel: page fault trap, code=0
>>> Stopped in pid 5800.1 (halt) at netbsd:bus_space_read_4*0x8:
>>> Xresume_xenev6() at netbsd:Xresume_xenev6+0x47
>> there's something missing here, bus_space_read_4() is not called directly
>> by Xresume_xenev6().
Not questioning that, but the trace as I typed it looks like above.
>> Is it i386 or amd64 ? If amd64, please make sure
>> you still have -fno-omit-frame-pointer in kernel build options (makeoptions)
It's amd64, a standard XEN3_DOM0-kernel grabbed as a binary from a daily build
at from www.fr.netbsd.org. I've built a local kernel also, ensuring that
-fno-omit-frame-pointer is in the makeoptions. I've made one change and that is
usb* at ehci? flags 1
to get the USB keyboard working during boot.
> You might want to disable tail-calls if you want a full trace back.
I assume that may be the cause of the trace not being correct. Ok, so adding
"-fno-optimize-sibling-calls" to makeoptions (is that the correct way of
disabling tail-calls?) causes the trace to change like this:
kernel: page fault trap, code=0
Stopped in pid 634.1 (halt) at netbsd:bus_space_read_4*0x8:
Xresume_xenev6() at netbsd:Xresume_xenev6+0x47
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
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