Re: just a dump

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

Hans de Bruin wrote:
> 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:
> 

just for fun single winxp over nfs and wireless (really slow):

[  978.108416] kvm: emulating exchange as write
[ 1083.639299] CE: hpet increasing min_delta_ns to 15000 nsec
[ 1188.704021] BUG: unable to handle kernel NULL pointer dereference at 
0000000000000058
[ 1188.704028] IP: [<ffffffff80216b4c>] mmu_page_remove_parent_pte+0xc/0x100
[ 1188.704036] PGD 1a0c63067 PUD 1a0ddd067 PMD 0
[ 1188.704040] Oops: 0000 [#1] SMP
[ 1188.704043] last sysfs file: 
/sys/devices/pci0000:00/0000:00:10.0/0000:01:09.0/resource
[ 1188.704046] CPU 1
[ 1188.704047] Modules linked in:
[ 1188.704051] Pid: 2985, comm: qemu-system-x86 Not tainted 2.6.30-rc6 
#5 System Product Name
[ 1188.704054] RIP: 0010:[<ffffffff80216b4c>]  [<ffffffff80216b4c>] 
mmu_page_remove_parent_pte+0xc/0x100
[ 1188.704059] RSP: 0018:ffff8801a0dc1918  EFLAGS: 00010296
[ 1188.704061] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 
0000000000000001
[ 1188.704063] RDX: ffffe20000000000 RSI: ffff880195717140 RDI: 
0000000000000000
[ 1188.704066] RBP: ffff8801a0dc1928 R08: 0000000000000001 R09: 
0000000000000001
[ 1188.704068] R10: 0000000000000002 R11: 0000000000000000 R12: 
ffff880195717140
[ 1188.704070] R13: ffff88019542ab00 R14: 0000000000000028 R15: 
ffff8801a0cc0000
[ 1188.704073] FS:  0000000040cd7950(0063) GS:ffff88002804d000(0000) 
knlGS:0000000000000000
[ 1188.704076] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1188.704078] CR2: 0000000000000058 CR3: 00000001a3d48000 CR4: 
00000000000006e0
[ 1188.704080] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
0000000000000000
[ 1188.704083] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
0000000000000400
[ 1188.704086] Process qemu-system-x86 (pid: 2985, threadinfo 
ffff8801a0dc0000, task ffff8801a0d8d460)
[ 1188.704088] Stack:
[ 1188.704089]  ffff8801acd60000 0000000000000008 ffff8801a0dc1ab8 
ffffffff80217323
[ 1188.704093]  ffff8801a0cc0000 0000000000000001 ffff8801955baa50 
ffffffff00000000
[ 1188.704097]  0000000000000001 00000000fee0017b ffff8801a0dc19f8 
ffffffff8021a04f
[ 1188.704101] Call Trace:
[ 1188.704103]  [<ffffffff80217323>] kvm_mmu_zap_page+0x153/0x3a0
[ 1188.704107]  [<ffffffff8021a04f>] ? paging64_walk_addr+0x28f/0x320
[ 1188.704111]  [<ffffffff8020a267>] ? gfn_to_hva+0x27/0x60
[ 1188.704115]  [<ffffffff8020a4a5>] ? kvm_read_guest_page+0x65/0x70
[ 1188.704119]  [<ffffffff80248f0b>] ? get_user_pages_fast+0x1db/0x2e0
[ 1188.704124]  [<ffffffff80217594>] __kvm_mmu_free_some_pages+0x24/0x40
[ 1188.704127]  [<ffffffff8021b55d>] paging64_page_fault+0x40d/0x420
[ 1188.704131]  [<ffffffff8021cfd2>] ? x86_emulate_insn+0x292/0x4d30
[ 1188.704135]  [<ffffffff8021ca75>] ? x86_decode_insn+0xc45/0xf10
[ 1188.704139]  [<ffffffff8020f98d>] ? emulate_instruction+0x1cd/0x2f0
[ 1188.704143]  [<ffffffff8021919c>] kvm_mmu_page_fault+0x1c/0x90
[ 1188.704147]  [<ffffffff80226e6f>] pf_interception+0x7f/0x190
[ 1188.704151]  [<ffffffff80222a3d>] ? apic_update_ppr+0x2d/0x70
[ 1188.704155]  [<ffffffff8022821a>] handle_exit+0x14a/0x2c0
[ 1188.704158]  [<ffffffff80222a3d>] ? apic_update_ppr+0x2d/0x70
[ 1188.704161]  [<ffffffff8021363f>] kvm_arch_vcpu_ioctl_run+0x62f/0xaa0
[ 1188.704165]  [<ffffffff8020b5d5>] ? kvm_vm_ioctl+0x165/0x910
[ 1188.704169]  [<ffffffff8027cde9>] ? do_futex+0x689/0x9c0
[ 1188.704174]  [<ffffffff8020cad3>] kvm_vcpu_ioctl+0x5d3/0x790
[ 1188.704177]  [<ffffffff8024eaeb>] ? __dequeue_entity+0x2b/0x50
[ 1188.704181]  [<ffffffff8024eb36>] ? set_next_entity+0x26/0x50
[ 1188.704184]  [<ffffffff802d8fa1>] vfs_ioctl+0x31/0x90
[ 1188.704189]  [<ffffffff802d92f1>] do_vfs_ioctl+0x2f1/0x4e0
[ 1188.704192]  [<ffffffff802d9562>] sys_ioctl+0x82/0xa0
[ 1188.704196]  [<ffffffff8022af6b>] system_call_fastpath+0x16/0x1b
[ 1188.704200] Code: e6 48 89 df e8 66 fe ff ff 48 8b 1c 24 4c 8b 64 24 
08 c9 c3 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53
48 89 fb 48 83 ec 08 <44> 8b 4f 58 45 85 c9 0f 84 d7 00 00 00 48 8b 47 
68 48 85 c0 0f
[ 1188.704226] RIP  [<ffffffff80216b4c>] 
mmu_page_remove_parent_pte+0xc/0x100
[ 1188.704230]  RSP <ffff8801a0dc1918>
[ 1188.704232] CR2: 0000000000000058
[ 1188.704234] ---[ end trace 35a9bc3a55fc3772 ]---

-- 
Hans