Re: Subject: Re: port-xen/45975: panic: HYPERVISOR_mmu_update failed, ret: -22 on -current MP domU (amd64)

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

On Tue, Feb 14, 2012 at 02:58:15PM -0600, Greg Oster wrote:
> 
> I just saw this panic with today's -current.  Relevant(?) bits look
> like:
> 
> ...
> pmap_kenter_pa: mapping already present
> evtchn_do_event: handler 0xffffffff80121b77 didn't lower ipl 8 7
> evtchn_do_event: handler 0xffffffff80121b77 didn't lower ipl 8 7
> xpq_flush_queue: 1 entries (0 successful)
> 0x000000017e476de0: 0x0000000190e00007
> panic: HYPERVISOR_mmu_update failed, ret: -22
> 
> fatal breakpoint trap in supervisor mode
> trap type 1 code 0 rip ffffffff80134575 cs e030 rflags 246 cr2
> 7f7ff78002b4 cpl 6 rsp ffffa0005f9ff710 Stopped in pid 19481.1 (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
> pmap_enter_ma() at netbsd:pmap_enter_ma+0xb74
> pmap_enter() at netbsd:pmap_enter+0x35
> uvm_fault_internal() at netbsd:uvm_fault_internal+0xf17
> trap() at netbsd:trap+0x5f5
> --- trap (number 1600061548) ---
> 65736961720034:
> ds          ffea
> es          f750
> fs          100
> gs          e180
> rdi         0
> rsi         d
> rbp         ffffa0005f9ff710
> rbx         104
> rdx         0
> rcx         8
> rax         1
> r8          ffffa00004559000
> r9          1
> r10         0
> r11         ffffa0000c761380
> r12         ffffffff804b7350    copyright+0x40090
> r13         ffffa0005f9ff750
> r14         ffffffea
> r15         2
> rip         ffffffff80134575    breakpoint+0x5
> cs          e030
> rflags      246
> rsp         ffffa0005f9ff710
> ss          e02b
> netbsd:breakpoint+0x5:  leave
> db{2}> 
> db{2}> 
> 
> relevant bits of 'xm dmesg' looks like:
> 
> (XEN) domain.c:509:d9 Attempt to change CR4 flags 00002620 -> 00000620
> (XEN) domain.c:509:d9 Attempt to change CR4 flags 00002620 -> 00000620
> (XEN) domain.c:509:d9 Attempt to change CR4 flags 00002620 -> 00000620
> (XEN) mm.c:2012:d9 Bad type (saw 00000000e8000001 != exp
> 0000000020000000) for mfn 190e00 (pfn 59a5b) 
> (XEN) mm.c:745:d9 Attempt to create linear p.t. with write perms
> 
> If you need more info, just let me know... (this is a test vm, so can
> be killed at will/on demand..)

Yes, that's the same problem. Is it with i386 or amd64 ?

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