Re: just a dump

[Hans de Bruin <bruinjm@xs4all.nl>]

Hans de Bruin wrote:
> Marcelo Tosatti wrote:
>> On Sat, May 16, 2009 at 10:38:25AM +0200, Hans de Bruin wrote:
>>> I ran memtest for 11 hours and it completed 4.7 passes with no problems.
>>> But then memtest is about cpu and memmory interaction. If the problem 
>>> is  disk related there is also disk/chipset/dma and memmory 
>>> interaction. I  could degrade my system by turning dma on disk io 
>>> off, or i could have a  closer look at kvm-autotest.
>>
>> Hans,
>>
>> It would be helpful if you can capture a few more KVM oopses, then.
>>
> 
> 
> v2.6.30-rc6-144-g5805977
> kvm-86-122-ge2478f5
> kvm from kernel
> simultaneously booting two w2k8.
> One vm dies:

another one. This time the vm where booted sequentialy:

[  253.268993] kvm: 2907: cpu0 unimplemented perfctr wrmsr: 0xc0010003 
data 0x0
[  475.036542] rmap_remove: ffff8800cdb913b0 10 0->BUG
[  475.036549] ------------[ cut here ]------------
[  475.036552] kernel BUG at arch/x86/kvm/mmu.c:576!
[  475.036555] invalid opcode: 0000 [#1] SMP
[  475.036558] last sysfs file: 
/sys/devices/pci0000:00/0000:00:10.0/0000:01:09.0/resource
[  475.036560] CPU 1
[  475.036562] Modules linked in:
[  475.036565] Pid: 2912, comm: qemu-system-x86 Not tainted 2.6.30-rc6 
#5 System Product Name
[  475.036568] RIP: 0010:[<ffffffff80217071>]  [<ffffffff80217071>] 
rmap_remove+0x151/0x200
[  475.036576] RSP: 0018:ffff8801488759f8  EFLAGS: 00010292
[  475.036578] RAX: 000000000000003a RBX: 0000000000000010 RCX: 
ffffffff809a3b40
[  475.036580] RDX: ffff88002804d000 RSI: 0000000000000046 RDI: 
ffffffff809a3a30
[  475.036583] RBP: ffff880148875a28 R08: 000000000000ae73 R09: 
00000000ffffffff
[  475.036585] R10: 0000000000000000 R11: 0000000000000000 R12: 
0000000000000000
[  475.036587] R13: ffff8800cdb913b0 R14: ffff8800c9c47580 R15: 
ffff88014889c000
[  475.036590] FS:  0000000042131950(0063) GS:ffff88002804d000(0000) 
knlGS:000007fffffae000
[  475.036593] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  475.036595] CR2: 00000000014bcc18 CR3: 0000000148846000 CR4: 
00000000000006e0
[  475.036597] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
0000000000000000
[  475.036599] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
0000000000000400
[  475.036602] Process qemu-system-x86 (pid: 2912, threadinfo 
ffff880148874000, task ffff8801afa06ae0)
[  475.036604] Stack:
[  475.036606]  ffff880148875a28 0000000000000000 0000000053fbdb00 
f880053fbdb00400
[  475.036609]  00000000000003b0 ffff8800c9c47580 ffff880148875ac8 
ffffffff8021ad8d
[  475.036613]  0000000000000000 ffff880100000100 00000000000252df 
000000000012566f
[  475.036617] Call Trace:
[  475.036619]  [<ffffffff8021ad8d>] paging64_sync_page+0x9d/0x1a0
[  475.036624]  [<ffffffff80218825>] ? rmap_write_protect+0xd5/0x150
[  475.036627]  [<ffffffff8021890b>] kvm_sync_page+0x6b/0x90
[  475.036631]  [<ffffffff8021a1ad>] mmu_sync_children+0xcd/0x120
[  475.036634]  [<ffffffff8021cfd2>] ? x86_emulate_insn+0x292/0x4d30
[  475.036638]  [<ffffffff8021c242>] ? x86_decode_insn+0x412/0xf10
[  475.036642]  [<ffffffff8021a2c2>] mmu_sync_roots+0xc2/0xd0
[  475.036645]  [<ffffffff8021a658>] kvm_mmu_load+0x138/0x200
[  475.036649]  [<ffffffff8022821a>] ? handle_exit+0x14a/0x2c0
[  475.036652]  [<ffffffff80213873>] kvm_arch_vcpu_ioctl_run+0x863/0xaa0
[  475.036657]  [<ffffffff8020b5d5>] ? kvm_vm_ioctl+0x165/0x910
[  475.036660]  [<ffffffff8027c809>] ? do_futex+0xa9/0x9c0
[  475.036665]  [<ffffffff8020cad3>] kvm_vcpu_ioctl+0x5d3/0x790
[  475.036668]  [<ffffffff803ea2c1>] ? security_file_permission+0x11/0x20
[  475.036672]  [<ffffffff8024eaeb>] ? __dequeue_entity+0x2b/0x50
[  475.036676]  [<ffffffff802d8fa1>] vfs_ioctl+0x31/0x90
[  475.036680]  [<ffffffff802d92f1>] do_vfs_ioctl+0x2f1/0x4e0
[  475.036684]  [<ffffffff8027d1a4>] ? sys_futex+0x84/0x130
[  475.036687]  [<ffffffff802d9562>] sys_ioctl+0x82/0xa0
[  475.036691]  [<ffffffff8022af6b>] system_call_fastpath+0x16/0x1b
[  475.036695] Code: 04 75 e7 48 8b 47 20 49 89 fb 48 85 c0 0f 84 b7 00 
00 00 48 89 c7 eb d0 49 8b 55 00 4c 89 ee 48 c7 c7 d0 2e 7f 80 e8 2f 29 
04 00 <0f> 0b eb fe 48 8b 4f 18 48 85 c9 0f 94 c2 83 fe 02 0f 9e c0 84
[  475.036721] RIP  [<ffffffff80217071>] rmap_remove+0x151/0x200
[  475.036724]  RSP <ffff8801488759f8>
[  475.036727] ---[ end trace 5a588ebf5d2bfd50 ]---
bash-3.1$
bash-3.1$

--
Hans