Description of problem: Kernel OOPS Version-Release number of selected component (if applicable): Fedora 7 test 4 How reproducible: Every time Steps to Reproduce: 1. Boot fc7 2. Run virt-manager Actual results: May 1 15:10:45 localhost kernel: CPU: 0 May 1 15:10:45 localhost kernel: EIP: 0002:[<00000002>] Not tainted VLI May 1 15:10:45 localhost kernel: EFLAGS: 00000000 (2.6.20-2925.5.fc7xen #1) May 1 15:10:45 localhost kernel: EIP is at 0x2 May 1 15:10:45 localhost kernel: eax: 00000000 ebx: 00f0a402 ecx: 00000073 edx: 00000202 May 1 15:10:45 localhost kernel: esi: bfa6ecf4 edi: 0000007b ebp: 00000000 esp: c8e1001c May 1 15:10:45 localhost kernel: ds: 0000 es: 0000 ss: 0069 May 1 15:10:45 localhost kernel: Process /usr/share/virt (pid: 3396, ti=c8e0f000 task=c8e32030 task.ti=c8e0f000) May 1 15:10:45 localhost kernel: Stack: 00000001 ffffffff 00000000 00000004 ffffffff 6d6f682f 616d2f65 736d6164 May 1 15:10:45 localhost kernel: 65622e2f 656c6761 676f4c2f 3030322f 35302d37 2d31302d 302d3531 35352d36 May 1 15:10:45 localhost kernel: 6165422d 00656c67 00000000 00000000 00000000 00010202 00000000 00000000 May 1 15:10:45 localhost kernel: Call Trace: May 1 15:10:45 localhost kernel: BUG: unable to handle kernel paging request at virtual address 616d2034 May 1 15:10:45 localhost kernel: printing eip: May 1 15:10:45 localhost kernel: c1005d6a May 1 15:10:45 localhost kernel: 04930000 -> *pde = 00000000:1d976001 May 1 15:10:45 localhost kernel: 04976000 -> *pme = 00000000:00000000 May 1 15:10:45 localhost kernel: Oops: 0000 [#2] May 1 15:10:45 localhost kernel: SMP May 1 15:10:45 localhost kernel: last sysfs file: /hypervisor/properties/capabilities May 1 15:10:45 localhost kernel: Modules linked in: i915 drm netloop netbk blktap blkbk ipt_MASQUERADE iptable_nat nf_nat bridge autofs4 h idp rfcomm l2cap bluetooth sunrpc nf_conntrack_netbios_ns nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink ipt_REJECT iptable_filter ip_ta bles xt_tcpudp ip6t_REJECT ip6table_filter ip6_tables x_tables dm_multipath video sbs i2c_ec dock button battery asus_acpi backlight ac ipv 6 lp loop snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_time r snd serial_core soundcore parport_pc snd_page_alloc serio_raw parport pcspkr iTCO_wdt tg3 i2c_i801 e100 i2c_core mii iTCO_vendor_support floppy sr_mod cdro m sg dm_snapshot dm_zero dm_mirror dm_mod ata_piix ata_generic libata sd_mod scsi_mod ext3 jbd mbcache ehci_hcd ohci_hcd uhci_hcd May 1 15:10:45 localhost kernel: CPU: 0 May 1 15:10:45 localhost kernel: EIP: 0061:[<c1005d6a>] Not tainted VLI May 1 15:10:45 localhost kernel: EFLAGS: 00010046 (2.6.20-2925.5.fc7xen #1) May 1 15:10:45 localhost kernel: EIP is at dump_trace+0x88/0x9e May 1 15:10:45 localhost kernel: eax: 00000000 ebx: c8e0fe5c ecx: c12c1aa4 edx: c1295e5f May 1 15:10:45 localhost kernel: esi: 616d2000 edi: c1275088 ebp: c8e0fe5c esp: c8e0fe4c May 1 15:10:45 localhost kernel: ds: 007b es: 007b ss: 0069 May 1 15:10:45 localhost kernel: Process /usr/share/virt (pid: 3396, ti=c8e0f000 task=c8e32030 task.ti=c8e0f000) May 1 15:10:45 localhost kernel: Stack: c1274f48 c1275088 00000018 00000000 c8e0fe70 c1005d9a c12c1aa4 c1275088 May 1 15:10:45 localhost kernel: c8e1007f c8e0fe94 c1005e4a c1275088 c1275088 c8e0ffe4 c8e1001c 00000002 May 1 15:10:45 localhost kernel: 00000000 c8e0ffe4 c8e0fee0 c1005fe6 c1275088 00000010 c8e321c4 00000d44 May 1 15:10:45 localhost kernel: Call Trace: May 1 15:10:45 localhost kernel: [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f May 1 15:10:45 localhost kernel: [<c1005e4a>] show_stack_log_lvl+0x9b/0xa3 May 1 15:10:45 localhost kernel: [<c1005fe6>] show_registers+0x194/0x26a May 1 15:10:45 localhost kernel: [<c10061ed>] die+0x131/0x246 May 1 15:10:45 localhost kernel: [<c11f9951>] do_page_fault+0xafc/0xc80 May 1 15:10:45 localhost kernel: [<c11f7c45>] error_code+0x35/0x3c May 1 15:10:45 localhost kernel: [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f May 1 15:10:45 localhost kernel: [<c1005e4a>] show_stack_log_lvl+0x9b/0xa3 May 1 15:10:45 localhost kernel: [<c1005fe6>] show_registers+0x194/0x26a May 1 15:10:45 localhost kernel: [<c10061ed>] die+0x131/0x246 May 1 15:10:45 localhost kernel: [<c11f7d5b>] do_trap+0x79/0x91 May 1 15:10:45 localhost kernel: [<c1006ab6>] do_iret_error+0xb5/0xc0 May 1 15:10:45 localhost kernel: [<c11f7c45>] error_code+0x35/0x3c May 1 15:10:45 localhost kernel: ======================= May 1 15:10:45 localhost kernel: Code: 00 39 c3 73 15 8b 4d 08 89 f8 8b 53 04 ff 51 08 8b 03 39 d8 76 04 89 c3 eb dd 8b 4d 08 ba 5f 5e 29 c1 89 f8 ff 51 0c 85 c0 78 10 <8b> 4e 34 85 c9 74 09 89 ce e8 e1 a4 00 00 eb b6 5e 5b 5e 5f 5d May 1 15:10:45 localhost kernel: EIP: [<c1005d6a>] dump_trace+0x88/0x9e SS:ESP 0069:c8e0fe4c Expected results: No OOPS Additional info:
Looking at dmesg in more detail provides this: BUG: at kernel/lockdep.c:1858 trace_hardirqs_on() [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f [<c1006343>] show_trace+0x12/0x14 [<c10063be>] dump_stack+0x16/0x18 [<c1037439>] trace_hardirqs_on+0xc4/0x143 [<c10055d4>] restore_all+0x3b/0x3e
The new kernel-xen package (kernel-xen-2.6-2.6.20-2925.8.fc7) should fix this problem.
I no longer see the oops. However, the kernel/lockdep.c:1858 trace_hardirqs_on() still occurs. I am not experiencing issues from this that I know of.