Re: port-xen/45975 (panic: HYPERVISOR_mmu_update failed, ret: -22 during heavy activity)

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

On Sun, Feb 12, 2012 at 11:50:04PM +0000, Jeff Rizzo wrote:
> The following reply was made to PR port-xen/45975; it has been noted by GNATS.
> 
> From: Jeff Rizzo <riz%netbsd.org@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: 
> Subject: Re: port-xen/45975 (panic: HYPERVISOR_mmu_update failed, ret: -22
>  during heavy activity)
> Date: Sun, 12 Feb 2012 15:45:28 -0800
> 
>  On 2/12/12 11:20 AM, bouyer%NetBSD.org@localhost wrote:
>  > Please test the patch; I tested it succesfully on aXen 3.3 install
>  > with amd64 and i386 domUs.
>  >
>  >
>  
>  I just got the panic on a Xen 4.1.2 domU with a 4 vcpu domU (4 physical 
>  cores with 2 threads per core on the hardware) while testing the patch:
>  
>  panic: HYPERVISOR_mmu_update failed, ret: -22
>  
>  fatal breakpoint trap in supervisor mode
>  trap type 1 code 0 rip ffffffff80134665 cs e030 rflags 246 cr2  
>  7f7ff7e12000 cpl 6 rsp ffffa000b423dea0
>  Stopped in pid 765.1 (sh) at    netbsd:breakpoint+0x5:  leave
>  breakpoint() at netbsd:breakpoint+0x5
>  vpanic() at netbsd:vpanic+0x1f2
>  printf_nolog() at netbsd:printf_nolog
>  xpq_queue_machphys_update() at netbsd:xpq_queue_machphys_update
>  xen_kpm_sync() at netbsd:xen_kpm_sync+0x31
>  pmap_enter_ma() at netbsd:pmap_enter_ma+0xe10
>  pmap_enter() at netbsd:pmap_enter+0x35
>  uvm_fault_lower_enter() at netbsd:uvm_fault_lower_enter+0xfe
>  uvm_fault_internal() at netbsd:uvm_fault_internal+0xbf9
>  trap() at netbsd:trap+0x5f5

please also send the last few lines of 'xm dmesg' if possible.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--