[Qemu-devel] general protection fault

[Dyweni - KVM]

Hi All,

I'm not sure who this falls to, so I've included all all parties that I 
thought may be relevant.

I'm getting the following error from my guest kernel when running 
oprofile within qemu-kvm:

general protection fault: 0000 [#1]
Modules linked in:

Pid: 896, comm: oprofiled Not tainted 3.2.0-rc7-20120117-0605 #1 Bochs 
Bochs
EIP: 0060:[<c14069ae>] EFLAGS: 00010086 CPU: 0
EIP is at nmi_cpu_setup.clone.6+0x2e/0xb0
EAX: 00000000 EBX: df89894c ECX: c0010005 EDX: 00000000
ESI: 00000001 EDI: c168e5c0 EBP: df8addf4 ESP: df8adde4
 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Process oprofiled (pid: 896, ti=df8ac000 task=df82f780 
task.ti=df8ac000)
Stack:
 df898980 00000004 fffffff0 d4520880 df8ade08 c1406d4b c1618dfa 
00000000
 00000000 df8ade14 c140464f dc792de0 df8ade28 c1405963 d4520880 
dc792de0
 00000000 df8ade4c c1111bfa c111c7fe df84c000 df8ade44 dc77ef80 
df8adeec
Call Trace:
 [<c1406d4b>] nmi_setup+0xab/0xd0
 [<c140464f>] oprofile_setup+0x2f/0xb0
 [<c1405963>] event_buffer_open+0x63/0x90
 [<c1111bfa>] __dentry_open.clone.17+0x1aa/0x2d0
 [<c111c7fe>] ? do_lookup+0x3e/0x370
 [<c1112c82>] nameidata_to_filp+0x52/0x70
 [<c1405900>] ? event_buffer_release+0x40/0x40
 [<c111f1b6>] do_last+0x1e6/0x740
 [<c111f7ea>] path_openat+0x9a/0x320
 [<c10fd854>] ? page_add_new_anon_rmap+0x74/0x80
 [<c111fb60>] do_filp_open+0x30/0x80
 [<c112904c>] ? alloc_fd+0x2c/0xd0
 [<c1112d8b>] do_sys_open+0xeb/0x1c0
 [<c1112e89>] sys_open+0x29/0x40
 [<c14b0f8c>] sysenter_do_call+0x12/0x22
Code: 57 56 53 83 ec 04 a1 90 e5 68 c1 8b 3d 44 a5 78 c1 8b 1d 8c e5 68 
c1 89 45 f0 8b 07 85 c0 74 1d 31 f6 8d 76 00 8b 0b 85 c9 74 08 <0f> 32 
89 43 04 89 53 08 83 c6 01 83 c3 0c 3b 37 72 e8 8b 77 04
EIP: [<c14069ae>] nmi_cpu_setup.clone.6+0x2e/0xb0 SS:ESP 0068:df8adde4
---[ end trace e22f1adcb9f592c1 ]---




My setup is:

QEMU-KVM = 0.14.1-r2
Host Linux Kernel = 3.1.6
Guest Linux Kernel = 3.2-rc7
OProfile = 0.9.6-r1



--
Thanks,
Dyweni