Hi,
I got the Oops below on an Dual CPU Dual-Core AMD Opteron(tm) Processor
2220 running a 32bit kernel. Kernel is 2.6.23.11, kvm version 57.
Doesn't happen all the time but usually right at VM startup. Seems to be
easier to trigger when starting up several VMs in row. Does it help to
post more of these as they show up?
Cheers,
-- Guido
BUG: unable to handle kernel paging request<1>BUG: unable to handle kernel
paging request at virtual address 52004605
printing eip:
52004605
*pdpt = 000000002f35d001
*pde = 0000000000000000
Oops: 0010 [#1]
SMP
Modules linked in: tun bitrev nfs nfsd exportfs lockd sunrpc ac lock_nolock
lock_dlm gfs2 dlm configfs bridge llc kvm_amd kvm bonding ipmi_si
ipmi_msghandler i2c_piix4 container dm_mirror dm_snapshot raid10 raid456
async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod
dm_round_robin dm_emc dm_multipath dm_mod sd_mod qla2xxx firmware_class
scsi_transport_fc scsi_mod bnx2 crc32 serverworks usbhid thermal processor fan
BUG: unable to handle kernel paging request at virtual address 3131ce82
printing eip:
3131ce82
*pdpt = 000000002fcfa001
*pde = 0000000000000000
CPU: 3
EIP: 0060:[<52004605>] Not tainted VLI
EFLAGS: 00010046 (2.6.23.11-aa-smp-64gb #1)
EIP is at 0x52004605
eax: 45811b60 ebx: c0f602c1 ecx: 00000003 edx: 00000000
esi: c0f602c1 edi: ede20000 ebp: 00000000 esp: f08e9d70
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process kvm (pid: 10396, ti=f08e8000 task=ef53d000 task.ti=efaea000)
Stack: f8d498d8 00000090 f8d49f8e ef64a000 eff3c020 f8cb5be6 00000000 eff3c020
f8d4121e 00000000 00000097 10002800 00000000 f5611140 eff3c020 0000ae80
f8d3da32 00000002 c01759cd 00000000 f655d7d0 dfc213c0 00000000 df803a80
Call Trace:
[<f8d498d8>] pic_update_irq+0x68/0x80 [kvm]
[<f8d49f8e>] kvm_pic_read_irq+0x6e/0xe0 [kvm]
[<f8cb5be6>] svm_intr_assist+0x66/0x100 [kvm_amd]
[<f8d4121e>] kvm_arch_vcpu_ioctl_run+0x8e/0x470 [kvm]
[<f8d3da32>] kvm_vcpu_ioctl+0x2a2/0x2f0 [kvm]
[<c01759cd>] flush_old_exec+0x43d/0x890
[<c011e5dc>] kmap_atomic+0x1c/0x30
[<c012b523>] current_fs_time+0x13/0x20
[<c0184dc7>] touch_atime+0x87/0x130
[<c01514f5>] do_generic_mapping_read+0x3c5/0x490
[<c0152d90>] generic_file_aio_read+0xd0/0x1e0
[<c0150a00>] file_read_actor+0x0/0x100
[<c0170ed7>] do_sync_read+0xc7/0x110
[<c013a180>] autoremove_wake_function+0x0/0x50
[<c015bfba>] kmap_high+0x1a/0x1b0
[<c015be5b>] page_address+0xcb/0xd0
[<f8d3d790>] kvm_vcpu_ioctl+0x0/0x2f0 [kvm]
[<c017c9fb>] do_ioctl+0x2b/0x90
[<c017cabc>] vfs_ioctl+0x5c/0x290
[<c0170e10>] do_sync_read+0x0/0x110
[<c017cd2d>] sys_ioctl+0x3d/0x70
[<c010416e>] sysenter_past_esp+0x5f/0x85
=======================
Code: Bad EIP value.
EIP: [<52004605>] 0x52004605 SS:ESP 0068:f08e9d70
kernel tried to execute NX-protected page - exploit attempt? (uid: 65534)
BUG: unable to handle kernel paging request at virtual address f08e9b00
printing eip:
f08e9b00
*pdpt = 0000000000004001
*pde = 80000000308001e3
*pte = 0000000000000000
BUG: unable to handle kernel paging request at virtual address 01f56124
printing eip:
c0172142
*pdpt = 000000000044e001
*pde = 0000000000000000
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