Re: [Xen-devel] Xen 4.1.2 HVM guest realtek nic problems (eth0 8139cp transmit queue timed out)

[Pasi Kärkkäinen <pasik@xxxxxx>]

And added fedora xen mailinglist to CC aswell..

On Mon, Oct 31, 2011 at 08:49:07PM +0200, Pasi Kärkkäinen wrote:
> Hello,
> 
> While testing Xen 4.1.2 and HVM guests I noticed the following problem
> with Fedora 16 HVM guests (using Linux 3.1.0 kernel in the VM):
> 
> The errors (call trace) happens pretty much immediately when there's some 
> network traffic going on..
> 
> Simple "yum update" in the VM triggers the problem..
> 
> 
> [    0.000000] Linux version 3.1.0-5.fc16.x86_64 
> (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.6.1 20111003 (Red 
> Hat 4.6.1-10) (GCC) ) #1 SMP Thu Oct 27 03:46:50 UTC 2011
> [    0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.1.0-5.fc16.x86_64 
> root=/dev/mapper/vg_f16test64hvm-lv_root ro rd.lvm.lv=vg_f16test64hvm/lv_root 
> rd.dm=0 SYSFONT=latarcyrheb-sun16 rhgb KEYTABLE=fi rd.md=0 rd.luks=0 
> rd.lvm.lv=vg_f16test64hvm/lv_swap LANG=en_US.UTF-8 console=ttyS0,38400 
> console=tty0
> <snip>
> 
> [   28.998481] 8139cp 0000:00:03.0: eth0: link up, 100Mbps, full-duplex, lpa 
> 0x05E1
> [  149.712071] ------------[ cut here ]------------
> [  149.717216] WARNING: at net/sched/sch_generic.c:255 
> dev_watchdog+0xf0/0x150()
> [  149.724709] Hardware name: HVM domU
> [  149.728738] NETDEV WATCHDOG: eth0 (8139cp): transmit queue 0 timed out
> [  149.735537] Modules linked in: ip6t_REJECT nf_conntrack_ipv6 
> nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_state 
> ip6_tables nf_conntrack 81
> 39too 8139cp ppdev parport_pc mii parport i2c_piix4 i2c_core joydev [last 
> unloaded: scsi_wait_scan]
> [  149.768028] Pid: 0, comm: swapper Not tainted 3.1.0-5.fc16.x86_64 #1
> [  149.774639] Call Trace:
> [  149.777765]  <IRQ>  [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
> [  149.784024]  [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
> [  149.790141]  [<ffffffff813ef49d>] ? netif_tx_lock+0x4a/0x7c
> [  149.799007]  [<ffffffff813ef613>] dev_watchdog+0xf0/0x150
> [  149.806361]  [<ffffffff81064b51>] run_timer_softirq+0x19b/0x280
> [  149.814392]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.821650]  [<ffffffff813ef523>] ? netif_tx_unlock+0x54/0x54
> [  149.828926]  [<ffffffff8105d6b3>] __do_softirq+0xc9/0x1b5
> [  149.836803]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.843422]  [<ffffffff814be5ec>] call_softirq+0x1c/0x30
> [  149.850067]  [<ffffffff81010b45>] do_softirq+0x46/0x81
> [  149.856760]  [<ffffffff8105d97b>] irq_exit+0x57/0xb1
> [  149.863035]  [<ffffffff812a39d3>] xen_evtchn_do_upcall+0x31/0x3e
> [  149.871144]  [<ffffffff814be76e>] xen_hvm_callback_vector+0x6e/0x80
> [  149.879494]  <EOI>  [<ffffffff8102f2f1>] ? native_safe_halt+0xb/0xd
> [  149.888220]  [<ffffffff81015b7e>] default_idle+0x4e/0x86
> [  149.894962]  [<ffffffff8100e2ed>] cpu_idle+0xae/0xe8
> [  149.901461]  [<ffffffff814934ee>] rest_init+0x72/0x74
> [  149.908949]  [<ffffffff81b76b7d>] start_kernel+0x3ab/0x3b6
> [  149.916617]  [<ffffffff81b762c4>] x86_64_start_reservations+0xaf/0xb3
> [  149.929148]  [<ffffffff81b76140>] ? early_idt_handlers+0x140/0x140
> [  149.936797]  [<ffffffff81b763ca>] x86_64_start_kernel+0x102/0x111
> [  149.944336] ---[ end trace d8786cb7d6a57f8a ]---
> [  149.950406] 8139cp 0000:00:03.0: eth0: Transmit timeout, status  d   3b   
> 15 80ff
> [  149.961879] ------------[ cut here ]------------
> [  149.962245] WARNING: at kernel/softirq.c:159 
> _local_bh_enable_ip+0x44/0x8e()
> [  149.962245] Hardware name: HVM domU
> [  149.962245] Modules linked in: ip6t_REJECT nf_conntrack_ipv6 
> nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_state 
> ip6_tables nf_conntrack 8139too 8139cp ppdev parport_pc mii parport i2c_piix4 
> i2c_core joydev [last unloaded: scsi_wait_scan]
> [  149.962245] Pid: 0, comm: swapper Tainted: G        W   
> 3.1.0-5.fc16.x86_64 #1
> [  149.962245] Call Trace:
> [  149.962245]  <IRQ>  [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
> [  149.962245]  [<ffffffff813ce599>] ? skb_release_data+0xca/0xcf
> [  149.962245]  [<ffffffff81057a88>] warn_slowpath_null+0x1a/0x1c
> [  149.962245]  [<ffffffff8105d462>] _local_bh_enable_ip+0x44/0x8e
> [  149.962245]  [<ffffffff8105d4ba>] local_bh_enable_ip+0xe/0x10
> [  149.962245]  [<ffffffff814b5db4>] _raw_spin_unlock_bh+0x15/0x17
> [  149.962245]  [<ffffffffa0053969>] destroy_conntrack+0x9d/0xdc 
> [nf_conntrack]
> [  149.962245]  [<ffffffff813fa343>] nf_conntrack_destroy+0x19/0x1b
> [  149.962245]  [<ffffffff813ce7ad>] skb_release_head_state+0xa7/0xef
> [  149.962245]  [<ffffffff813ce5b1>] __kfree_skb+0x13/0x83
> [  149.962245]  [<ffffffff813ce677>] consume_skb+0x56/0x6b
> [  149.962245]  [<ffffffffa003c1b9>] cp_clean_rings+0xb4/0x114 [8139cp]
> [  149.962245]  [<ffffffffa003c371>] cp_tx_timeout+0x88/0x10e [8139cp]
> [  149.962245]  [<ffffffff813ef627>] dev_watchdog+0x104/0x150
> [  149.962245]  [<ffffffff81064b51>] run_timer_softirq+0x19b/0x280
> [  149.962245]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.962245]  [<ffffffff813ef523>] ? netif_tx_unlock+0x54/0x54
> [  149.962245]  [<ffffffff8105d6b3>] __do_softirq+0xc9/0x1b5
> [  149.962245]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.962245]  [<ffffffff814be5ec>] call_softirq+0x1c/0x30
> [  149.962245]  [<ffffffff81010b45>] do_softirq+0x46/0x81
> [  149.962245]  [<ffffffff8105d97b>] irq_exit+0x57/0xb1
> [  149.962245]  [<ffffffff812a39d3>] xen_evtchn_do_upcall+0x31/0x3e
> [  149.962245]  [<ffffffff814be76e>] xen_hvm_callback_vector+0x6e/0x80
> [  149.962245]  <EOI>  [<ffffffff8102f2f1>] ? native_safe_halt+0xb/0xd
> [  149.962245]  [<ffffffff81015b7e>] default_idle+0x4e/0x86
> [  149.962245]  [<ffffffff8100e2ed>] cpu_idle+0xae/0xe8
> [  149.962245]  [<ffffffff814934ee>] rest_init+0x72/0x74
> [  149.962245]  [<ffffffff81b76b7d>] start_kernel+0x3ab/0x3b6
> [  149.962245]  [<ffffffff81b762c4>] x86_64_start_reservations+0xaf/0xb3
> [  149.962245]  [<ffffffff81b76140>] ? early_idt_handlers+0x140/0x140
> [  149.962245]  [<ffffffff81b763ca>] x86_64_start_kernel+0x102/0x111
> [  149.962245] ---[ end trace d8786cb7d6a57f8b ]---
> 
> Full guest kernel dmesg attached to this email.
> The host is running F16 with Xen 4.1.2 and Linux 3.1.0 dom0 kernel.
> 
> Xen cfgfile for the HVM domain:
> 
> kernel = "hvmloader"
> builder='hvm'
> device_model = 'qemu-dm'
> name = "f16test64hvm"
> memory = 1024
> vcpus=1
> pae=1
> acpi=1
> apic=1
> vif = [ 'type=ioemu, mac=00:16:3f:03:01:14, bridge=virbr0' ]
> disk = [ 'phy:/dev/vg_f16/f16test64hvm,hda,w', 
> 'file:/root/iso/Fedora-16-Final-RC2-x86_64-DVD.iso,hdc:cdrom,r' ]
> boot='cd'
> xen_platform_pci=0
> on_poweroff = 'destroy'
> on_reboot   = 'restart'
> on_crash    = 'restart'
> sdl=0
> vnc=1
> vncpasswd=''
> stdvga=0
> serial='pty'
> tsc_mode=0
> usb=1
> usbdevice='tablet'
> keymap='fi'
> 
> 
> Using "model=e1000" instead for the vif works OK.. no problems with the 
> emulated intel nic.
> 
> Any ideas what the problem with the emulated realtek nic? 
> 
> Thanks,
> 
> 
> -- Pasi
> 

> [    0.000000] Initializing cgroup subsys cpuset
> [    0.000000] Initializing cgroup subsys cpu
> [    0.000000] Linux version 3.1.0-5.fc16.x86_64 
> (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.6.1 20111003 (Red 
> Hat 4.6.1-10) (GCC) ) #1 SMP Thu Oct 27 03:46:50 UTC 2011
> [    0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.1.0-5.fc16.x86_64 
> root=/dev/mapper/vg_f16test64hvm-lv_root ro rd.lvm.lv=vg_f16test64hvm/lv_root 
> rd.dm=0 SYSFONT=latarcyrheb-sun16 rhgb KEYTABLE=fi rd.md=0 rd.luks=0 
> rd.lvm.lv=vg_f16test64hvm/lv_swap LANG=en_US.UTF-8 console=ttyS0,38400 
> console=tty0
> [    0.000000] BIOS-provided physical RAM map:
> [    0.000000]  BIOS-e820: 0000000000000000 - 000000000009e000 (usable)
> [    0.000000]  BIOS-e820: 000000000009e000 - 00000000000a0000 (reserved)
> [    0.000000]  BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
> [    0.000000]  BIOS-e820: 0000000000100000 - 0000000040000000 (usable)
> [    0.000000]  BIOS-e820: 00000000fc000000 - 0000000100000000 (reserved)
> [    0.000000] Using x86 segment limits to approximate NX protection
> [    0.000000] DMI 2.4 present.
> [    0.000000] Hypervisor detected: Xen HVM
> [    0.000000] Xen version 4.1.
> [    0.000000] Xen Platform PCI: unrecognised magic value
> [    0.000000] No AGP bridge found
> [    0.000000] last_pfn = 0x40000 max_arch_pfn = 0x400000000
> [    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 
> 0x7010600070106
> [    0.000000] found SMP MP-table at [ffff8800000fbc70] fbc70
> [    0.000000] init_memory_mapping: 0000000000000000-0000000040000000
> [    0.000000] RAMDISK: 36608000 - 372fc000
> [    0.000000] ACPI: RSDP 00000000000ea020 00024 (v02    Xen)
> [    0.000000] ACPI: XSDT 00000000fc0134b0 00034 (v01    Xen      HVM 
> 00000000 HVML 00000000)
> [    0.000000] ACPI: FACP 00000000fc0132d0 000F4 (v04    Xen      HVM 
> 00000000 HVML 00000000)
> [    0.000000] ACPI: DSDT 00000000fc003440 0FE05 (v02    Xen      HVM 
> 00000000 INTL 20100528)
> [    0.000000] ACPI: FACS 00000000fc003400 00040
> [    0.000000] ACPI: APIC 00000000fc0133d0 000D8 (v02    Xen      HVM 
> 00000000 HVML 00000000)
> [    0.000000] No NUMA configuration found
> [    0.000000] Faking a node at 0000000000000000-0000000040000000
> [    0.000000] Initmem setup node 0 0000000000000000-0000000040000000
> [    0.000000]   NODE_DATA [000000003ffec000 - 000000003fffffff]
> [    0.000000] Zone PFN ranges:
> [    0.000000]   DMA      0x00000010 -> 0x00001000
> [    0.000000]   DMA32    0x00001000 -> 0x00100000
> [    0.000000]   Normal   empty
> [    0.000000] Movable zone start PFN for each node
> [    0.000000] early_node_map[2] active PFN ranges
> [    0.000000]     0: 0x00000010 -> 0x0000009e
> [    0.000000]     0: 0x00000100 -> 0x00040000
> [    0.000000] ACPI: PM-Timer IO Port: 0xb008
> [    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x02] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x04] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x06] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x08] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x05] lapic_id[0x0a] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x06] lapic_id[0x0c] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x07] lapic_id[0x0e] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x08] lapic_id[0x10] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x09] lapic_id[0x12] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x14] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x16] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x18] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x1a] disabled)
> [    0.000000] ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x1c] disabled)
> [    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
> [    0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-47
> [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 low level)
> [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 low level)
> [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 low level)
> [    0.000000] Using ACPI (MADT) for SMP configuration information
> [    0.000000] SMP: Allowing 15 CPUs, 14 hotplug CPUs
> [    0.000000] PM: Registered nosave memory: 000000000009e000 - 
> 00000000000a0000
> [    0.000000] PM: Registered nosave memory: 00000000000a0000 - 
> 00000000000e0000
> [    0.000000] PM: Registered nosave memory: 00000000000e0000 - 
> 0000000000100000
> [    0.000000] Allocating PCI resources starting at 40000000 (gap: 
> 40000000:bc000000)
> [    0.000000] Booting paravirtualized kernel on Xen HVM
> [    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:15 
> nr_node_ids:1
> [    0.000000] PERCPU: Embedded 27 pages/cpu @ffff88003fc00000 s81024 r8192 
> d21376 u131072
> [    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total 
> pages: 257929
> [    0.000000] Policy zone: DMA32
> [    0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.1.0-5.fc16.x86_64 
> root=/dev/mapper/vg_f16test64hvm-lv_root ro rd.lvm.lv=vg_f16test64hvm/lv_root 
> rd.dm=0 SYSFONT=latarcyrheb-sun16 rhgb KEYTABLE=fi rd.md=0 rd.luks=0 
> rd.lvm.lv=vg_f16test64hvm/lv_swap LANG=en_US.UTF-8 console=ttyS0,38400 
> console=tty0
> [    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
> [    0.000000] Checking aperture...
> [    0.000000] No AGP bridge found
> [    0.000000] Memory: 1002468k/1048576k available (4867k kernel code, 456k 
> absent, 45652k reserved, 6782k data, 940k init)
> [    0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, 
> CPUs=15, Nodes=1
> [    0.000000] Hierarchical RCU implementation.
> [    0.000000]        RCU dyntick-idle grace-period acceleration is enabled.
> [    0.000000] NR_IRQS:16640 nr_irqs:1208 16
> [    0.000000] Xen HVM callback vector for event delivery is enabled
> [    0.000000] Console: colour VGA+ 80x25
> [    0.000000] console [tty0] enabled
> [    0.000000] console [ttyS0] enabled
> [    0.000000] allocated 8388608 bytes of page_cgroup
> [    0.000000] please try 'cgroup_disable=memory' option if you don't want 
> memory cgroups
> [    0.000000] Detected 2677.244 MHz processor.
> [    0.005999] Calibrating delay loop (skipped), value calculated using timer 
> frequency.. 5354.48 BogoMIPS (lpj=2677244)
> [    0.015004] pid_max: default: 32768 minimum: 301
> [    0.021037] Security Framework initialized
> [    0.025012] SELinux:  Initializing.
> [    0.030209] Dentry cache hash table entries: 131072 (order: 8, 1048576 
> bytes)
> [    0.039268] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
> [    0.047115] Mount-cache hash table entries: 256
> [    0.051161] Initializing cgroup subsys cpuacct
> [    0.056007] Initializing cgroup subsys memory
> [    0.060013] Initializing cgroup subsys devices
> [    0.063998] Initializing cgroup subsys freezer
> [    0.071007] Initializing cgroup subsys net_cls
> [    0.077002] Initializing cgroup subsys blkio
> [    0.092016] Initializing cgroup subsys perf_event
> [    0.097110] CPU: Physical Processor ID: 0
> [    0.105998] CPU: Processor Core ID: 0
> [    0.114998] mce: CPU supports 9 MCE banks
> [    0.120027] SMP alternatives: switching to UP code
> [    0.137406] ACPI: Core revision 20110623
> [    0.154723] ftrace: allocating 25204 entries in 99 pages
> [    0.203985] Not enabling x2apic, Intr-remapping init failed.
> [    0.212983] Switched APIC routing to physical flat.
> [    0.227511] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
> [    0.247910] CPU0: Intel(R) Core(TM) i5 CPU       M 560  @ 2.67GHz stepping 
> 05
> [    0.266997] installing Xen timer for CPU 0
> [    0.279095] Performance Events: unsupported p6 CPU model 37 no PMU driver, 
> software events only.
> [    0.288052] NMI watchdog disabled (cpu0): hardware events not enabled
> [    0.289014] Brought up 1 CPUs
> [    0.289980] Total of 1 processors activated (5354.48 BogoMIPS).
> [    0.295080] devtmpfs: initialized
> [    0.334074] atomic64 test passed for x86-64 platform with CX8 and with SSE
> [    0.335009] RTC time: 18:48:31, date: 10/31/11
> [    0.336031] NET: Registered protocol family 16
> [    0.340028] ACPI: bus type pci registered
> [    0.343066] PCI: Using configuration type 1 for base access
> [    0.352055] bio: create slab <bio-0> at 0
> [    0.354016] ACPI: Added _OSI(Module Device)
> [    0.354986] ACPI: Added _OSI(Processor Device)
> [    0.355988] ACPI: Added _OSI(3.0 _SCP Extensions)
> [    0.356976] ACPI: Added _OSI(Processor Aggregator Device)
> [    0.461035] ACPI: Interpreter enabled
> [    0.461960] ACPI: (supports S0 S3 S4 S5)
> [    0.466962] ACPI: Using IOAPIC for interrupt routing
> [    1.042887] ACPI: No dock devices found.
> [    1.043879] HEST: Table not found.
> [    1.044874] PCI: Using host bridge windows from ACPI; if necessary, use 
> "pci=nocrs" and report a bug
> [    1.045996] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
> [    1.047922] pci_root PNP0A03:00: host bridge window [io  0x0000-0x0cf7]
> [    1.048872] pci_root PNP0A03:00: host bridge window [io  0x0d00-0xffff]
> [    1.049876] pci_root PNP0A03:00: host bridge window [mem 
> 0x000a0000-0x000bffff]
> [    1.050885] pci_root PNP0A03:00: host bridge window [mem 
> 0xf0000000-0xfbffffff]
> [    1.148854] * Found PM-Timer Bug on the chipset. Due to workarounds for a 
> bug,
> [    1.148856] * this clock source is slow. Consider trying other clock 
> sources
> [    1.174862] pci 0000:00:01.3: quirk: [io  0xb000-0xb03f] claimed by PIIX4 
> ACPI
> [    1.249999]  pci0000:00: Unable to request _OSC control (_OSC support 
> mask: 0x1e)
> [    1.988937] ACPI: PCI Interrupt Link [LNKA] (IRQs *5 10 11)
> [    1.995734] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
> [    2.002022] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
> [    2.007986] ACPI: PCI Interrupt Link [LNKD] (IRQs *5 10 11)
> [    2.013926] xen/balloon: Initialising balloon driver.
> [    2.014721] last_pfn = 0x40000 max_arch_pfn = 0x400000000
> [    2.015744] xen-balloon: Initialising balloon driver.
> [    2.016893] vgaarb: device added: 
> PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
> [    2.017723] vgaarb: loaded
> [    2.018717] vgaarb: bridge control possible 0000:00:02.0
> [    2.019908] SCSI subsystem initialized
> [    2.020926] usbcore: registered new interface driver usbfs
> [    2.021751] usbcore: registered new interface driver hub
> [    2.022778] usbcore: registered new device driver usb
> [    2.023833] PCI: Using ACPI for IRQ routing
> [    2.027000] NetLabel: Initializing
> [    2.027726] NetLabel:  domain hash size = 128
> [    2.028719] NetLabel:  protocols = UNLABELED CIPSOv4
> [    2.029771] NetLabel:  unlabeled traffic allowed by default
> [    2.030738] Switching to clocksource xen
> [    2.032064] Switched to NOHz mode on CPU #0
> [    2.058600] pnp: PnP ACPI init
> [    2.070312] ACPI: bus type pnp registered
> [    2.081358] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved
> [    2.105526] system 00:02: [io  0x10c0-0x1141] has been reserved
> [    2.123586] system 00:02: [io  0xb044-0xb047] has been reserved
> [    2.140716] system 00:03: [io  0x08a0-0x08a3] has been reserved
> [    2.155376] system 00:03: [io  0x0cc0-0x0ccf] has been reserved
> [    2.171720] system 00:03: [io  0x04d0-0x04d1] has been reserved
> [    2.235079] pnp: PnP ACPI: found 12 devices
> [    2.239980] ACPI: ACPI bus type pnp unregistered
> [    2.252651] NET: Registered protocol family 2
> [    2.262951] IP route cache hash table entries: 32768 (order: 6, 262144 
> bytes)
> [    2.271095] TCP established hash table entries: 131072 (order: 9, 2097152 
> bytes)
> [    2.282685] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
> [    2.293164] TCP: Hash tables configured (established 131072 bind 65536)
> [    2.302409] TCP reno registered
> [    2.307217] UDP hash table entries: 512 (order: 2, 16384 bytes)
> [    2.317125] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
> [    2.326389] NET: Registered protocol family 1
> [    2.331960] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
> [    2.341391] pci 0000:00:01.0: PIIX3: Enabling Passive Release
> [    2.353138] pci 0000:00:01.0: Activating ISA DMA hang workarounds
> [    2.361559] Unpacking initramfs...
> [    2.699968] Freeing initrd memory: 13264k freed
> [    2.710147] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni)
> [    2.717216] audit: initializing netlink socket (disabled)
> [    2.722974] type=2000 audit(1320086915.409:1): initialized
> [    2.752235] HugeTLB registered 2 MB page size, pre-allocated 0 pages
> [    2.764915] VFS: Disk quotas dquot_6.5.2
> [    2.769491] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> [    2.776668] msgmni has been set to 1983
> [    2.781504] alg: No test for stdrng (krng)
> [    2.787102] NET: Registered protocol family 38
> [    2.792422] Block layer SCSI generic (bsg) driver version 0.4 loaded 
> (major 253)
> [    2.801199] io scheduler noop registered
> [    2.806077] io scheduler deadline registered
> [    2.811278] io scheduler cfq registered (default)
> [    2.818821] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
> [    2.825681] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
> [    2.831486] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
> [    2.838723] acpiphp: Slot [0] registered
> [    2.842985] acpiphp: Slot [1] registered
> [    2.847352] acpiphp: Slot [2] registered
> [    2.851192] acpiphp: Slot [3] registered
> [    2.855526] acpiphp: Slot [4] registered
> [    2.859987] acpiphp: Slot [5] registered
> [    2.865216] acpiphp: Slot [6] registered
> [    2.870721] acpiphp: Slot [7] registered
> [    2.875193] acpiphp: Slot [8] registered
> [    2.882170] acpiphp: Slot [9] registered
> [    2.887602] acpiphp: Slot [10] registered
> [    2.893553] acpiphp: Slot [11] registered
> [    2.901005] acpiphp: Slot [12] registered
> [    2.909484] acpiphp: Slot [13] registered
> [    2.927108] acpiphp: Slot [14] registered
> [    2.936646] acpiphp: Slot [15] registered
> [    2.947352] acpiphp: Slot [16] registered
> [    2.959370] acpiphp: Slot [17] registered
> [    2.975306] acpiphp: Slot [18] registered
> [    2.986962] acpiphp: Slot [19] registered
> [    2.998507] acpiphp: Slot [20] registered
> [    3.008809] acpiphp: Slot [21] registered
> [    3.019088] acpiphp: Slot [22] registered
> [    3.028701] acpiphp: Slot [23] registered
> [    3.041087] acpiphp: Slot [24] registered
> [    3.054701] acpiphp: Slot [25] registered
> [    3.088485] acpiphp: Slot [26] registered
> [    3.096559] acpiphp: Slot [27] registered
> [    3.104123] acpiphp: Slot [28] registered
> [    3.112335] acpiphp: Slot [29] registered
> [    3.120729] acpiphp: Slot [30] registered
> [    3.128063] acpiphp: Slot [31] registered
> [    3.140336] input: Power Button as 
> /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
> [    3.152824] ACPI: Power Button [PWRF]
> [    3.159164] input: Sleep Button as 
> /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
> [    3.170535] ACPI: Sleep Button [SLPF]
> [    3.240741] ERST: Table is not found!
> [    3.247178] GHES: HEST is not enabled!
> [    3.255081] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    3.299342] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> [    3.339144] 00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> [    3.348389] Non-volatile memory driver v1.3
> [    3.359031] Linux agpgart interface v0.103
> [    3.373452] loop: module loaded
> [    3.380620] scsi0 : ata_piix
> [    3.385158] scsi1 : ata_piix
> [    3.392804] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc120 irq 14
> [    3.406093] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc128 irq 15
> [    3.424665] Fixed MDIO Bus: probed
> [    3.432049] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    3.452302] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    3.465814] uhci_hcd: USB Universal Host Controller Interface driver
> [    3.480645] uhci_hcd 0000:00:01.2: PCI INT D -> GSI 23 (level, low) -> IRQ 
> 23
> [    3.495010] uhci_hcd 0000:00:01.2: UHCI Host Controller
> [    3.509922] uhci_hcd 0000:00:01.2: new USB bus registered, assigned bus 
> number 1
> [    3.532921] uhci_hcd 0000:00:01.2: irq 23, io base 0x0000c100
> [    3.556237] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
> [    3.577164] usb usb1: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
> [    3.597277] usb usb1: Product: UHCI Host Controller
> [    3.609990] usb usb1: Manufacturer: Linux 3.1.0-5.fc16.x86_64 uhci_hcd
> [    3.623617] usb usb1: SerialNumber: 0000:00:01.2
> [    3.633485] hub 1-0:1.0: USB hub found
> [    3.641829] hub 1-0:1.0: 2 ports detected
> [    3.654394] usbcore: registered new interface driver usbserial
> [    3.834631] Refined TSC clocksource calibration: 2677.188 MHz.
> [    3.849203] ata2.00: ATAPI: QEMU DVD-ROM, 0.10.2, max UDMA/100
> [    3.860117] ata1.00: ATA-7: QEMU HARDDISK, 0.10.2, max UDMA/100
> [    3.867830] ata1.00: 62914560 sectors, multi 16: LBA48 
> [    3.880575] ata2.00: configured for MWDMA2
> [    3.888438] ata1.00: configured for MWDMA2
> [    3.897324] scsi 0:0:0:0: Direct-Access     ATA      QEMU HARDDISK    0.10 
> PQ: 0 ANSI: 5
> [    3.909309] sd 0:0:0:0: Attached scsi generic sg0 type 0
> [    3.921146] scsi 1:0:0:0: CD-ROM            QEMU     QEMU DVD-ROM     0.10 
> PQ: 0 ANSI: 5
> [    3.940204] sd 0:0:0:0: [sda] 62914560 512-byte logical blocks: (32.2 
> GB/30.0 GiB)
> [    3.953575] sr0: scsi3-mmc drive: 4x/4x xa/form2 tray
> [    3.972245] cdrom: Uniform CD-ROM driver Revision: 3.20
> [    3.985565] sd 0:0:0:0: [sda] Write Protect is off
> [    3.995242] sr 1:0:0:0: Attached scsi generic sg1 type 5
> [    4.003515] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, 
> doesn't support DPO or FUA
> [    4.030638] USB Serial support registered for generic
> [    4.071098] usb 1-2: new full speed USB device number 2 using uhci_hcd
> [    4.116603]  sda: sda1 sda2 sda3
> [    4.122784] sd 0:0:0:0: [sda] Attached SCSI disk
> [    4.279332] usb 1-2: New USB device found, idVendor=0627, idProduct=0001
> [    4.285003] usb 1-2: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
> [    4.291626] usb 1-2: Product: QEMU USB Tablet
> [    4.296035] usb 1-2: Manufacturer: QEMU 0.10.2
> [    4.301072] usb 1-2: SerialNumber: 1
> [    4.327941] usbcore: registered new interface driver usbserial_generic
> [    4.334045] usbserial: USB Serial Driver core
> [    4.338689] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 
> 0x60,0x64 irq 1,12
> [    4.356131] serio: i8042 KBD port at 0x60,0x64 irq 1
> [    4.365819] serio: i8042 AUX port at 0x60,0x64 irq 12
> [    4.377814] mousedev: PS/2 mouse device common for all mice
> [    4.391350] input: AT Translated Set 2 keyboard as 
> /devices/platform/i8042/serio0/input/input2
> [    4.409931] rtc_cmos 00:05: rtc core: registered rtc_cmos as rtc0
> [    4.423898] rtc0: alarms up to one day, 114 bytes nvram
> [    4.435841] device-mapper: uevent: version 1.0.3
> [    4.449590] device-mapper: ioctl: 4.21.0-ioctl (2011-07-06) initialised: 
> dm-devel@xxxxxxxxxx
> [    4.495727] cpuidle: using governor ladder
> [    4.504718] cpuidle: using governor menu
> [    4.513536] EFI Variables Facility v0.08 2004-May-17
> [    4.552133] input: QEMU 0.10.2 QEMU USB Tablet as 
> /devices/pci0000:00/0000:00:01.2/usb1/1-2/1-2:1.0/input/input3
> [    4.574945] generic-usb 0003:0627:0001.0001: input,hidraw0: USB HID v0.01 
> Pointer [QEMU 0.10.2 QEMU USB Tablet] on usb-0000:00:01.2-2/input0
> [    4.604382] usbcore: registered new interface driver usbhid
> [    4.615480] usbhid: USB HID core driver
> [    4.632689] ip_tables: (C) 2000-2006 Netfilter Core Team
> [    4.642932] TCP cubic registered
> [    4.650070] Initializing XFRM netlink socket
> [    4.659989] NET: Registered protocol family 10
> [    4.670710] Mobile IPv6
> [    4.676439] NET: Registered protocol family 17
> [    4.686698] Registering the dns_resolver key type
> [    4.698703] registered taskstats version 1
> [    4.710470] IMA: No TPM chip found, activating TPM-bypass!
> [    4.727752]   Magic number: 15:53:849
> [    4.737301] graphics fbcon: hash matches
> [    4.747845] rtc_cmos 00:05: setting system clock to 2011-10-31 18:48:35 
> UTC (1320086915)
> [    4.766933] Initializing network drop monitor service
> [    4.778567] Freeing unused kernel memory: 940k freed
> [    4.790390] Write protecting the kernel read-only data: 10240k
> [    4.816829] Freeing unused kernel memory: 1260k freed
> [    4.847132] Freeing unused kernel memory: 1584k freed
> [    4.946739] input: ImExPS/2 Generic Explorer Mouse as 
> /devices/platform/i8042/serio1/input/input4
> [    5.069194] dracut: dracut-013-16.fc16
> [    5.086672] udevd[115]: starting version 173
> [    5.237375] dracut: Starting plymouth daemon
> %G[    5.437681] dracut: rd.dm=0: removing DM RAID activation
> [    5.456883] dracut: rd.md.imsm=0: no MD RAID for imsm/isw raids
> [    5.471879] dracut: rd.md.ddf=0: no MD RAID for SNIA ddf raids
> %G[    6.056855] dracut: Scanning devices sda3  for LVM logical volumes 
> vg_f16test64hvm/lv_root vg_f16test64hvm/lv_swap
> [    6.099044] dracut: inactive '/dev/vg_f16test64hvm/lv_swap' [1.97 GiB] 
> inherit
> [    6.107308] dracut: inactive '/dev/vg_f16test64hvm/lv_root' [27.53 GiB] 
> inherit
> [    6.615218] EXT4-fs (dm-1): INFO: recovery required on readonly filesystem
> [    6.623572] EXT4-fs (dm-1): write access will be enabled during recovery
> [    7.513709] EXT4-fs (dm-1): recovery complete
> [    7.539777] EXT4-fs (dm-1): mounted filesystem with ordered data mode. 
> Opts: (null)
> [    7.596678] dracut: Checking ext4: /dev/mapper/vg_f16test64hvm-lv_root
> [    7.603638] dracut: issuing e2fsck -a  /dev/mapper/vg_f16test64hvm-lv_root
> [    7.657115] dracut: /dev/mapper/vg_f16test64hvm-lv_root: clean, 
> 18709/1806896 files, 289903/7217152 blocks
> [    7.666279] dracut: Remounting /dev/mapper/vg_f16test64hvm-lv_root with -o 
> ro
> [    7.680814] EXT4-fs (dm-1): mounted filesystem with ordered data mode. 
> Opts: (null)
> [    7.717573] dracut: Mounted root filesystem 
> /dev/mapper/vg_f16test64hvm-lv_root
> [    7.854983] dracut: Switching root
> [    8.204987] type=1404 audit(1320086918.956:2): enforcing=1 old_enforcing=0 
> auid=4294967295 ses=4294967295
> [    8.329675] type=1403 audit(1320086919.081:3): policy loaded 
> auid=4294967295 ses=4294967295
> [    8.353773] systemd[1]: Successfully loaded SELinux policy in 165ms 166us.
> [    8.451859] systemd[1]: Successfully loaded SELinux database in 77ms 
> 139us, size on heap is 475K.
> [    8.509781] systemd[1]: RTC configured in localtime, applying delta of 120 
> minutes to system time.
> [    8.660676] systemd[1]: Relabelled /dev and /run in 87ms 636us.
> [    8.689704] systemd[1]: systemd 36 running in system mode. (+PAM +LIBWRAP 
> +AUDIT +SELINUX +SYSVINIT +LIBCRYPTSETUP; fedora)
> 

> Welcome to Fedora release 16 (Verne)!

> 

> [    8.755902] systemd[1]: Set hostname to <f16test64hvm.localdomain>.
> Starting Collect Read-Ahead Data...

> Started Replay Read-Ahead Data.

> Starting Media Directory...

> [    9.215716] systemd-readahead-collect[402]: Disabling readahead collector 
> due to execution in virtualized environment.
> Started Lock Directory.

> Started Runtime Directory.

> Starting Debug File System...

> Starting POSIX Message Queue File System...

> Starting Security File System...

> Starting Huge Pages File System...

> Starting udev Coldplug all Devices...

> Starting udev Kernel Device Manager...

> Starting Syslog Kernel Log Buffer Bridge...

> Started Syslog Kernel Log Buffer Bridge.

> [    9.410090] udevd[410]: starting version 173
> Started udev Kernel Device Manager.

> Started Collect Read-Ahead Data.

> Started Load legacy module configuration.

> Started File System Check on Root Device.

> Starting Remount API VFS...

> Starting Remount Root FS...

> Started Set Up Additional Binary Formats.

> Started Load Kernel Modules.

> Started FUSE Control File System.

> Started Configuration File System.

> Starting Apply Kernel Variables...

> Starting Setup Virtual Console...

> Starting STDOUT Syslog Bridge...

> Started STDOUT Syslog Bridge.

> Started udev Coldplug all Devices.

> Started Remount API VFS.

> Started Apply Kernel Variables.

> Starting udev Wait for Complete Device Initialization...

> Started Security File System.

> Started POSIX Message Queue File System.

> Started Debug File System.

> Started Huge Pages File System.

> [    9.798875] EXT4-fs (dm-1): re-mounted. Opts: (null)
> Started Media Directory.

> Started Remount Root FS.

> Starting Configure read-only root support...

> Started Configure read-only root support.

> Started Setup Virtual Console.

> Starting /dev/mapper/vg_f16test64hvm-lv_swap...

> [   10.958370] Adding 2064380k swap on /dev/mapper/vg_f16test64hvm-lv_swap.  
> Priority:0 extents:1 across:2064380k 
> Started /dev/mapper/vg_f16test64hvm-lv_swap.

> [   11.009608] piix4_smbus 0000:00:01.3: SMBus base address uninitialized - 
> upgrade BIOS or use force_addr=0xaddr
> [   11.038011] parport_pc 00:0b: reported by Plug and Play ACPI
> [   11.047803] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
> [   11.094629] 8139cp: 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
> [   11.125422] 8139cp 0000:00:03.0: PCI INT A -> GSI 28 (level, low) -> IRQ 28
> [   11.160994] 8139cp 0000:00:03.0: eth0: RTL-8139C+ at 0xffffc9000019e000, 
> 00:16:3f:03:01:14, IRQ 28
> [   11.186450] ppdev: user-space parallel port driver
> Starting File System Check on 
> /dev/disk/by-uuid/6d0e406a-ac9c-443d-a84c-34d0cc56d2a2...
[   11.279756] 8139too: 8139too Fast Ethernet driver 0.9.28
> 
> Started udev Wait for Complete Device Initialization.[   11.449395] 
> rmmod[598]: ERROR: Module scsi_wait_scan does not exist in /proc/modules
> 

> Started Show Plymouth Boot Screen.

> Starting Wait for storage scan...

> Started Wait for storage scan.

> Starting Initialize storage subsystems (RAID, LVM, etc.)...

> systemd-fsck[   11.727436] systemd-fsck[591]: /dev/sda2: recovering journal
> [591]: /dev/sda2: recovering journal

> systemd-fsck[591]: /dev/sda2: clean, 219/128016 files, 48307/512000 blocks[   
> 11.841965] systemd-fsck[591]: /dev/sda2: clean, 219/128016 files, 
> 48307/512000 blocks
> 

> Started File System Check on 
> /dev/disk/by-uuid/6d0e406a-ac9c-443d-a84c-34d0cc56d2a2.

> Starting /boot...

> [   12.185717] EXT4-fs (sda2): mounted filesystem with ordered data mode. 
> Opts: (null)
> Started /boot.

> [   12.462997] fedora-storage-init[604]: Setting up Logical Volume 
> Management:   2 logical volume(s) in volume group "vg_f16test64hvm" now active
> Started Initialize storage subsystems (RAID, LVM, etc.).

> Starting Initialize storage subsystems (RAID, LVM, etc.)...

> [   12.528806] fedora-storage-init[604]: [  OK  ]
> [   12.639613] fedora-storage-init[618]: Setting up Logical Volume 
> Management:   2 logical volume(s) in volume group "vg_f16test64hvm" now active
> Started Initialize storage subsystems (RAID, LVM, etc.).

> Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or 
> progress polling...

> [   12.787931] fedora-storage-init[618]: [  OK  ]
> [   12.857150] lvm[624]: 2 logical volume(s) in volume group 
> "vg_f16test64hvm" monitored
> Started Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress 
> polling.

> Started Mark the need to relabel after reboot.

> Started Relabel all filesystems, if necessary.

> Started Reconfigure the system on administrator request.

> Starting Load Random Seed...

> Starting Tell Plymouth To Write Out Runtime Data...

> Starting Recreate Volatile Files and Directories...

> Started Load Random Seed.

> [   13.065835] systemd-tmpfiles[629]: Successfully loaded SELinux database in 
> 36ms 529us, size on heap is 476K.
> Started Tell Plymouth To Write Out Runtime Data.

> Started Recreate Volatile Files and Directories.

> Starting LSB: Mount and unmount network filesystems....

> Starting IPv4 firewall with iptables...

> Starting IPv6 firewall with ip6tables...

> Starting Security Auditing Service...

> Starting SSH server keys generation....
[   13.419101] auditd[635]: Started dispatcher: /sbin/audispd pid: 645
> 
> Starting Sendmail Mail Transport Agent...

> Starting System Logging Service...

> Starting Login Service...

> Started /etc/rc.local Compatibility.

> Starting Wait for Plymouth Boot Screen to Quit...

> Starting Terminate Plymouth Boot Screen...

> Starting D-Bus System Message Bus...

> Stopping Syslog Kernel Log Buffer Bridge...

> [   14.410603] nf_conntrack version 0.5.0 (7964 buckets, 31856 max)
> [   14.418528] ip6_tables: (C) 2000-2006 Netfilter Core Team
> [   28.998481] 8139cp 0000:00:03.0: eth0: link up, 100Mbps, full-duplex, lpa 
> 0x05E1
> [  149.712071] ------------[ cut here ]------------
> [  149.717216] WARNING: at net/sched/sch_generic.c:255 
> dev_watchdog+0xf0/0x150()
> [  149.724709] Hardware name: HVM domU
> [  149.728738] NETDEV WATCHDOG: eth0 (8139cp): transmit queue 0 timed out
> [  149.735537] Modules linked in: ip6t_REJECT nf_conntrack_ipv6 
> nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_state 
> ip6_tables nf_conntrack 8139too 8139cp ppdev parport_pc mii parport i2c_piix4 
> i2c_core joydev [last unloaded: scsi_wait_scan]
> [  149.768028] Pid: 0, comm: swapper Not tainted 3.1.0-5.fc16.x86_64 #1
> [  149.774639] Call Trace:
> [  149.777765]  <IRQ>  [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
> [  149.784024]  [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
> [  149.790141]  [<ffffffff813ef49d>] ? netif_tx_lock+0x4a/0x7c
> [  149.799007]  [<ffffffff813ef613>] dev_watchdog+0xf0/0x150
> [  149.806361]  [<ffffffff81064b51>] run_timer_softirq+0x19b/0x280
> [  149.814392]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.821650]  [<ffffffff813ef523>] ? netif_tx_unlock+0x54/0x54
> [  149.828926]  [<ffffffff8105d6b3>] __do_softirq+0xc9/0x1b5
> [  149.836803]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.843422]  [<ffffffff814be5ec>] call_softirq+0x1c/0x30
> [  149.850067]  [<ffffffff81010b45>] do_softirq+0x46/0x81
> [  149.856760]  [<ffffffff8105d97b>] irq_exit+0x57/0xb1
> [  149.863035]  [<ffffffff812a39d3>] xen_evtchn_do_upcall+0x31/0x3e
> [  149.871144]  [<ffffffff814be76e>] xen_hvm_callback_vector+0x6e/0x80
> [  149.879494]  <EOI>  [<ffffffff8102f2f1>] ? native_safe_halt+0xb/0xd
> [  149.888220]  [<ffffffff81015b7e>] default_idle+0x4e/0x86
> [  149.894962]  [<ffffffff8100e2ed>] cpu_idle+0xae/0xe8
> [  149.901461]  [<ffffffff814934ee>] rest_init+0x72/0x74
> [  149.908949]  [<ffffffff81b76b7d>] start_kernel+0x3ab/0x3b6
> [  149.916617]  [<ffffffff81b762c4>] x86_64_start_reservations+0xaf/0xb3
> [  149.929148]  [<ffffffff81b76140>] ? early_idt_handlers+0x140/0x140
> [  149.936797]  [<ffffffff81b763ca>] x86_64_start_kernel+0x102/0x111
> [  149.944336] ---[ end trace d8786cb7d6a57f8a ]---
> [  149.950406] 8139cp 0000:00:03.0: eth0: Transmit timeout, status  d   3b   
> 15 80ff
> [  149.961879] ------------[ cut here ]------------
> [  149.962245] WARNING: at kernel/softirq.c:159 
> _local_bh_enable_ip+0x44/0x8e()
> [  149.962245] Hardware name: HVM domU
> [  149.962245] Modules linked in: ip6t_REJECT nf_conntrack_ipv6 
> nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_state 
> ip6_tables nf_conntrack 8139too 8139cp ppdev parport_pc mii parport i2c_piix4 
> i2c_core joydev [last unloaded: scsi_wait_scan]
> [  149.962245] Pid: 0, comm: swapper Tainted: G        W   
> 3.1.0-5.fc16.x86_64 #1
> [  149.962245] Call Trace:
> [  149.962245]  <IRQ>  [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
> [  149.962245]  [<ffffffff813ce599>] ? skb_release_data+0xca/0xcf
> [  149.962245]  [<ffffffff81057a88>] warn_slowpath_null+0x1a/0x1c
> [  149.962245]  [<ffffffff8105d462>] _local_bh_enable_ip+0x44/0x8e
> [  149.962245]  [<ffffffff8105d4ba>] local_bh_enable_ip+0xe/0x10
> [  149.962245]  [<ffffffff814b5db4>] _raw_spin_unlock_bh+0x15/0x17
> [  149.962245]  [<ffffffffa0053969>] destroy_conntrack+0x9d/0xdc 
> [nf_conntrack]
> [  149.962245]  [<ffffffff813fa343>] nf_conntrack_destroy+0x19/0x1b
> [  149.962245]  [<ffffffff813ce7ad>] skb_release_head_state+0xa7/0xef
> [  149.962245]  [<ffffffff813ce5b1>] __kfree_skb+0x13/0x83
> [  149.962245]  [<ffffffff813ce677>] consume_skb+0x56/0x6b
> [  149.962245]  [<ffffffffa003c1b9>] cp_clean_rings+0xb4/0x114 [8139cp]
> [  149.962245]  [<ffffffffa003c371>] cp_tx_timeout+0x88/0x10e [8139cp]
> [  149.962245]  [<ffffffff813ef627>] dev_watchdog+0x104/0x150
> [  149.962245]  [<ffffffff81064b51>] run_timer_softirq+0x19b/0x280
> [  149.962245]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.962245]  [<ffffffff813ef523>] ? netif_tx_unlock+0x54/0x54
> [  149.962245]  [<ffffffff8105d6b3>] __do_softirq+0xc9/0x1b5
> [  149.962245]  [<ffffffff81014fec>] ? sched_clock+0x9/0xd
> [  149.962245]  [<ffffffff814be5ec>] call_softirq+0x1c/0x30
> [  149.962245]  [<ffffffff81010b45>] do_softirq+0x46/0x81
> [  149.962245]  [<ffffffff8105d97b>] irq_exit+0x57/0xb1
> [  149.962245]  [<ffffffff812a39d3>] xen_evtchn_do_upcall+0x31/0x3e
> [  149.962245]  [<ffffffff814be76e>] xen_hvm_callback_vector+0x6e/0x80
> [  149.962245]  <EOI>  [<ffffffff8102f2f1>] ? native_safe_halt+0xb/0xd
> [  149.962245]  [<ffffffff81015b7e>] default_idle+0x4e/0x86
> [  149.962245]  [<ffffffff8100e2ed>] cpu_idle+0xae/0xe8
> [  149.962245]  [<ffffffff814934ee>] rest_init+0x72/0x74
> [  149.962245]  [<ffffffff81b76b7d>] start_kernel+0x3ab/0x3b6
> [  149.962245]  [<ffffffff81b762c4>] x86_64_start_reservations+0xaf/0xb3
> [  149.962245]  [<ffffffff81b76140>] ? early_idt_handlers+0x140/0x140
> [  149.962245]  [<ffffffff81b763ca>] x86_64_start_kernel+0x102/0x111
> [  149.962245] ---[ end trace d8786cb7d6a57f8b ]---

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