Re: panic: HYPERVISOR_mmu_update failed

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

On Thursday 31 July 2008 00:59:01 Sarton O'Brien wrote:
> # gdb -w netbsd.gdb /dev/mem
> GNU gdb 6.5
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> GDB is free software, covered by the GNU General Public License, and you
> are welcome to change it and/or distribute copies of it under certain
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> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "x86_64--netbsd"...netbsd.gdb: No such file
> or directory.
>
> xpq_flush_queue: 1 entries
> 0x000000004324f020: 0x0000000000000225
> panic: HYPERVISOR_mmu_update failed
>
> fatal breakpoint trap in supervisor mode
> trap type 1 code 0 rip ffffffff803649f5 cs e030 rflags 246 cr2  54dfa0
> cpl 6 rsp ffffa00013afa7e0
> Stopped in pid 496.1 (gdb) at   netbsd:breakpoint+0x5:  leave
> breakpoint() at netbsd:breakpoint+0x5
> panic() at netbsd:panic+0x255
> xpq_flush_queue() at netbsd:xpq_flush_queue+0xaf
> pmap_enter_ma() at netbsd:pmap_enter_ma+0x4ec
> pmap_enter() at netbsd:pmap_enter+0x5a
> mmrw() at netbsd:mmrw+0x1c2
> spec_read() at netbsd:spec_read+0x1f6
> VOP_READ() at netbsd:VOP_READ+0x2d
> vn_read() at netbsd:vn_read+0x9f
> dofileread() at netbsd:dofileread+0x7e
> sys_read() at netbsd:sys_read+0x72
> syscall() at netbsd:syscall+0x98
> ds          0xa7f0
> es          0x57cc
> fs          0xa7f0
> gs          0x58a7
> rdi         0
> rsi         0xd
> rbp         0xffffa00013afa7e0
> rbx         0xffffa00013afa7f0
> rdx         0
> rcx         0
> rax         0x1
> r8          0xffffffff80578240  cpu_info_primary
> r9          0x1
> r10         0xffffa00013afa700
> r11         0xffffffff8037c420  xenconscn_putc
> r12         0x100
> r13         0xffffffff803f330b  copyright+0x12eab
> r14         0x225
> r15         0xffffffff80633600  kernel_pmap_store
> rip         0xffffffff803649f5  breakpoint+0x5
> cs          0xe030
> rflags      0x246
> rsp         0xffffa00013afa7e0
> ss          0xe02b
> netbsd:breakpoint+0x5:  leave
> db>

Some questions:

Is this a Dom0 or DomU?
Is this NetBSD-current ?
Is this reproducable?
Are you running a debug or non-debug Xen hypervisor?
Can you provide the dmesg output?

Christoph