Re: port-xen/55291: panic: HYPERVISOR_mmu_update failed, ret: -16

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR port-xen/55291; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-xen-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Subject: Re: port-xen/55291: panic: HYPERVISOR_mmu_update failed, ret: -16
Date: Sat, 23 May 2020 17:30:19 +0200

 On Sat, May 23, 2020 at 03:25:01PM +0000, prlw1%cam.ac.uk@localhost wrote:
 > Starting cupsd.
 > Starting cron.
 > The following components reported failures:
 >     /etc/rc.d/sysctl
 > See /var/run/rc.log for more information.
 > Sat May 23 16:11:29 BST 2020
 > [ 239.1600116] xpq_flush_queue: 1 entries (0 successful) on cpu0 (0)
 > [ 239.1600116] panic: HYPERVISOR_mmu_update failed, ret: -16
 > 
 > [ 239.1600116] cpu0: Begin traceback...
 > [ 239.1600116] vpanic() at netbsd:vpanic+0x146
 > [ 239.1600116] snprintf() at netbsd:snprintf
 > [ 239.1600116] xpq_queue_machphys_update() at netbsd:xpq_queue_machphys_update
 > [ 239.1600116] pmap_enter_ma() at netbsd:pmap_enter_ma+0x69d
 > [ 239.1600116] pmap_enter() at netbsd:pmap_enter+0x58
 > [ 239.1600116] udv_fault() at netbsd:udv_fault+0x100
 > [ 239.1600116] uvm_fault_internal() at netbsd:uvm_fault_internal+0x518
 > [ 239.1600116] trap() at netbsd:trap+0x66c
 > [ 239.1600116] --- trap (number 6) ---
 > [ 239.1600116] 7237b698b62f:
 > [ 239.1600116] cpu0: End traceback...
 > 
 > [ 239.1600116] dumping to dev 168,1 (offset=33554431, size=0): not possible
 > [ 239.1600116] rebooting...
 > (XEN) Hardware Dom0 shutdown: rebooting machine
 > (XEN) Resetting with ACPI MEMORY or I/O RESET_REG.
 > 
 > >How-To-Repeat:
 > Boot XEN3_DOM0
 
 We'll need more details, because I don't get this problem.
 Do you have a serial console ?
 Is it with a xen-debug.gz kernel ?
 
 are you doing anything special, e.g. start X11, when it panics ?
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --