Re: [RFC PATCH v2, part3 07/11] PCI, xen-pcifront: use new PCI interfaces to simplify implementation

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On Fri, Jun 07, 2013 at 10:50:24AM -0400, Konrad Rzeszutek Wilk wrote:
> On Thu, May 16, 2013 at 11:50:55PM +0800, Jiang Liu wrote:
> > Use new PCI interfaces to simplify xen-pcifront implementation:
> > 1) Use pci_create_root_bus() instead of pci_scan_bus_parented()
> >    because pci_scan_bus_parented() is marked as __deprecated.This
> >    also gets rid of a duplicated call of pci_bus_start_devices().
> > 2) Use pci_stop_root_bus() and pci_remove_root_bus() instead of
> >    open-coded private implementation.
> > 3) Use pci_set_host_bridge_release() to release data structures
> >    associated with PCI root buses.
> > 4) Use pci_bus_get()/pci_bus_put() to manage PCI root bus reference
> >    count.
> > 
> > This is also a preparation for coming PCI bus lock enhancement.

With this patch from :

 Merge branch 'pci_lock_v3' of https://github.com/jiangliu/linux into testing


it blows up when detaching the device.

Parsing config from /vm-pv-discard.cfg
Daemon running with PID 4062
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.10.0-rc4upstream-00172-g909fe9e-dirty (konrad@xxxxxxxxxxxxxxxxxxx) (gcc version 4.4.4 20100503 (Red Hat 4.4.4-2) (GCC) ) #2 SMP Fri Jun 7 10:55:54 EDT 2013
[    0.000000] Command line: console=hvc0 debug 
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] Freeing 20000-40000 pfn range: 131072 pages freed
[    0.000000] 1-1 mapping on 20000->100000
[    0.000000] Released 131072 pages of unused memory
[    0.000000] Set 917504 page(s) to 1-1 mapping
[    0.000000] Populating 100000-120000 pfn range: 131072 pages added
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x000000001fffffff] usable
[    0.000000] Xen: [mem 0x0000000020000000-0x00000000201fffff] reserved
[    0.000000] Xen: [mem 0x0000000020200000-0x000000003fffffff] unusable
[    0.000000] Xen: [mem 0x0000000040000000-0x00000000401fffff] reserved
[    0.000000] Xen: [mem 0x0000000040200000-0x00000000c6cd3fff] unusable
[    0.000000] Xen: [mem 0x00000000c6cd4000-0x00000000c6d1cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d1d000-0x00000000c6d27fff] ACPI data
[    0.000000] Xen: [mem 0x00000000c6d28000-0x00000000c6d28fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d29000-0x00000000c6d49fff] reserved
[    0.000000] Xen: [mem 0x00000000c6d4a000-0x00000000c6d4bfff] unusable
[    0.000000] Xen: [mem 0x00000000c6d4c000-0x00000000c6d6cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d6d000-0x00000000c6d8ffff] reserved
[    0.000000] Xen: [mem 0x00000000c6d90000-0x00000000c6d9cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d9d000-0x00000000c6d9ffff] reserved
[    0.000000] Xen: [mem 0x00000000c6da0000-0x00000000c6db0fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6db1000-0x00000000c6ddcfff] reserved
[    0.000000] Xen: [mem 0x00000000c6ddd000-0x00000000c6e1ffff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6e20000-0x00000000c6ffffff] unusable
[    0.000000] Xen: [mem 0x00000000c7800000-0x00000000cf9fffff] reserved
[    0.000000] Xen: [mem 0x00000000fed1c000-0x00000000fed3ffff] reserved
[    0.000000] Xen: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] Xen: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] Xen: [mem 0x0000000100000000-0x000000011fffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI not present or invalid.
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] No AGP bridge found
[    0.000000] e820: last_pfn = 0x120000 max_arch_pfn = 0x400000000
[    0.000000] e820: last_pfn = 0x20000 max_arch_pfn = 0x400000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Base memory trampoline at [ffff88000009a000] 9a000 size 24576
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000]  [mem 0x00000000-0x000fffff] page 4k
[    0.000000] init_memory_mapping: [mem 0x11fe00000-0x11fffffff]
[    0.000000]  [mem 0x11fe00000-0x11fffffff] page 4k
[    0.000000] BRK [0x01d8a000, 0x01d8afff] PGTABLE
[    0.000000] BRK [0x01d8b000, 0x01d8bfff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x11c000000-0x11fdfffff]
[    0.000000]  [mem 0x11c000000-0x11fdfffff] page 4k
[    0.000000] BRK [0x01d8c000, 0x01d8cfff] PGTABLE
[    0.000000] BRK [0x01d8d000, 0x01d8dfff] PGTABLE
[    0.000000] BRK [0x01d8e000, 0x01d8efff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x100000000-0x11bffffff]
[    0.000000]  [mem 0x100000000-0x11bffffff] page 4k
[    0.000000] init_memory_mapping: [mem 0x00100000-0x1fffffff]
[    0.000000]  [mem 0x00100000-0x1fffffff] page 4k
[    0.000000] RAMDISK: [mem 0x02197000-0x13f67fff]
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000011fffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x11fffffff]
[    0.000000]   NODE_DATA [mem 0x11fea2000-0x11fea5fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0xffffffff]
[    0.000000]   Normal   [mem 0x100000000-0x11fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0009ffff]
[    0.000000]   node   0: [mem 0x00100000-0x1fffffff]
[    0.000000]   node   0: [mem 0x100000000-0x11fffffff]
[    0.000000] On node 0 totalpages: 262047
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3999 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 1736 pages used for memmap
[    0.000000]   DMA32 zone: 126976 pages, LIFO batch:31
[    0.000000]   Normal zone: 1792 pages used for memmap
[    0.000000]   Normal zone: 131072 pages, LIFO batch:31
[    0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] No local APIC present
[    0.000000] APIC: disable apic facility
[    0.000000] APIC: switched to apic NOOP
[    0.000000] nr_irqs_gsi: 16
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 0000000020000000 - 0000000020200000
[    0.000000] PM: Registered nosave memory: 0000000020200000 - 0000000040000000
[    0.000000] PM: Registered nosave memory: 0000000040000000 - 0000000040200000
[    0.000000] PM: Registered nosave memory: 0000000040200000 - 00000000c6cd4000
[    0.000000] PM: Registered nosave memory: 00000000c6cd4000 - 00000000c6d1d000
[    0.000000] PM: Registered nosave memory: 00000000c6d1d000 - 00000000c6d28000
[    0.000000] PM: Registered nosave memory: 00000000c6d28000 - 00000000c6d29000
[    0.000000] PM: Registered nosave memory: 00000000c6d29000 - 00000000c6d4a000
[    0.000000] PM: Registered nosave memory: 00000000c6d4a000 - 00000000c6d4c000
[    0.000000] PM: Registered nosave memory: 00000000c6d4c000 - 00000000c6d6d000
[    0.000000] PM: Registered nosave memory: 00000000c6d6d000 - 00000000c6d90000
[    0.000000] PM: Registered nosave memory: 00000000c6d90000 - 00000000c6d9d000
[    0.000000] PM: Registered nosave memory: 00000000c6d9d000 - 00000000c6da0000
[    0.000000] PM: Registered nosave memory: 00000000c6da0000 - 00000000c6db1000
[    0.000000] PM: Registered nosave memory: 00000000c6db1000 - 00000000c6ddd000
[    0.000000] PM: Registered nosave memory: 00000000c6ddd000 - 00000000c6e20000
[    0.000000] PM: Registered nosave memory: 00000000c6e20000 - 00000000c7000000
[    0.000000] PM: Registered nosave memory: 00000000c7000000 - 00000000c7800000
[    0.000000] PM: Registered nosave memory: 00000000c7800000 - 00000000cfa00000
[    0.000000] PM: Registered nosave memory: 00000000cfa00000 - 00000000fed1c000
[    0.000000] PM: Registered nosave memory: 00000000fed1c000 - 00000000fed40000
[    0.000000] PM: Registered nosave memory: 00000000fed40000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fee01000
[    0.000000] PM: Registered nosave memory: 00000000fee01000 - 00000000ff000000
[    0.000000] PM: Registered nosave memory: 00000000ff000000 - 0000000100000000
[    0.000000] e820: [mem 0xcfa00000-0xfed1bfff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.3-unstable (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 28 pages/cpu @ffff88011f800000 s85632 r8192 d20864 u1048576
[    0.000000] pcpu-alloc: s85632 r8192 d20864 u1048576 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 258442
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: console=hvc0 debug 
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x340
[    0.000000] Checking aperture...
[    0.000000] No AGP bridge found
[    0.000000] Memory: 722480k/4718592k available (6698k kernel code, 3670404k absent, 325708k reserved, 4234k data, 1724k init)
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=512 to nr_cpu_ids=2.
[    0.000000] NR_IRQS:33024 nr_irqs:288 16
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [hvc0] enabled
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.000000] tsc: Detected 3092.926 MHz processor
[    0.001000] Calibrating delay loop (skipped), value calculated using timer frequency.. 6185.85 BogoMIPS (lpj=3092926)
[    0.001000] pid_max: default: 32768 minimum: 301
[    0.001000] Security Framework initialized
[    0.001000] SELinux:  Initializing.
[    0.001000] SELinux:  Starting in permissive mode
[    0.001000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.001000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.001000] Mount-cache hash table entries: 256
[    0.001582] Initializing cgroup subsys freezer
[    0.001698] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.001698] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)
[    0.001708] CPU: Physical Processor ID: 0
[    0.001712] CPU: Processor Core ID: 0
[    0.001718] Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0
[    0.001718] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32
[    0.001718] tlb_flushall_shift: 5
[    0.025468] cpu 0 spinlock event irq 17
[    0.025566] Performance Events: unsupported p6 CPU model 42 no PMU driver, software events only.
[    0.026081] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.026680] installing Xen timer for CPU 1
[    0.026723] cpu 1 spinlock event irq 24
[    0.026793] SMP alternatives: switching to SMP code
[    0.048014] Brought up 2 CPUs
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6cd4000-0xc6d1cfff] (299008 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d28000-0xc6d28fff] (4096 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d4c000-0xc6d6cfff] (135168 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d90000-0xc6d9cfff] (53248 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6da0000-0xc6db0fff] (69632 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6ddd000-0xc6e1ffff] (274432 bytes)
[    0.051399] kworker/u4:0 (19) used greatest stack depth: 6016 bytes left
[    0.052492] Grant tables using version 2 layout.
[    0.052492] Grant table initialized
[    0.071696] RTC time: 165:165:165, date: 165/165/65
[    0.071985] NET: Registered protocol family 16
[    0.072173] kworker/u4:0 (22) used greatest stack depth: 5928 bytes left
[    0.073110] kworker/u4:0 (30) used greatest stack depth: 5464 bytes left
[    0.074030] dca service started, version 1.12.1
[    0.074563] PCI: setting up Xen PCI frontend stub
[    0.074568] PCI: pci_cache_line_size set to 64 bytes
[    0.101148] bio: create slab <bio-0> at 0
[    0.101220] ACPI: Interpreter disabled.
[    0.102003] xen/balloon: Initialising balloon driver.
[    0.103081] xen-balloon: Initialising balloon driver.
[    0.104136] vgaarb: loaded
[    0.105135] usbcore: registered new interface driver usbfs
[    0.105135] usbcore: registered new interface driver hub
[    0.105135] usbcore: registered new device driver usb
[    0.106089] pps_core: LinuxPPS API ver. 1 registered
[    0.106089] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[    0.106089] PTP clock support registered
[    0.106089] PCI: System does not support PCI
[    0.106089] PCI: System does not support PCI
[    0.107154] NetLabel: Initializing
[    0.107154] NetLabel:  domain hash size = 128
[    0.107154] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.107175] NetLabel:  unlabeled traffic allowed by default
[    0.108087] Switching to clocksource xen
[    0.125349] pnp: PnP ACPI: disabled
[    0.138965] NET: Registered protocol family 2
[    0.139578] TCP established hash table entries: 8192 (order: 5, 131072 bytes)
[    0.139647] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[    0.139668] TCP: Hash tables configured (established 8192 bind 8192)
[    0.193672] TCP: reno registered
[    0.193693] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.193712] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.194030] NET: Registered protocol family 1
[    0.194380] RPC: Registered named UNIX socket transport module.
[    0.194389] RPC: Registered udp transport module.
[    0.194394] RPC: Registered tcp transport module.
[    0.194398] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.194404] PCI: CLS 0 bytes, default 64
[    0.194570] Unpacking initramfs...
[    0.778545] Freeing initrd memory: 292676k freed
[    0.823501] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    0.823855] Machine check injector initialized
[    0.825040] Scanning for low memory corruption every 60 seconds
[    0.826072] audit: initializing netlink socket (disabled)
[    0.826114] type=2000 audit(1370618465.698:1): initialized
[    0.839204] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.839673] VFS: Disk quotas dquot_6.5.2
[    0.839760] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.840528] NFS: Registering the id_resolver key type
[    0.840553] Key type id_resolver registered
[    0.840558] Key type id_legacy registered
[    0.840587] NTFS driver 2.1.30 [Flags: R/W].
[    0.840919] msgmni has been set to 1982
[    0.841082] SELinux:  Registering netfilter hooks
[    0.842697] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.842706] io scheduler noop registered
[    0.842710] io scheduler deadline registered
[    0.842772] io scheduler cfq registered (default)
[    0.843309] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    0.846284] intel_idle: does not run on family 6 model 42
[    0.846299] ioatdma: Intel(R) QuickData Technology Driver 4.00
[    0.847400] pcifront pci-0: Installing PCI frontend
[    0.847417] Warning: only able to allocate 4 MB for software IO TLB
[    0.850807] software IO TLB [mem 0x109000000-0x109400000] (4MB) mapped at [ffff880109000000-ffff8801093fffff]
[    0.851175] pcifront pci-0: Creating PCI Frontend Bus 0000:00
[    0.851458] pcifront pci-0: PCI host bridge to bus 0000:00
[    0.851469] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    0.851478] pci_bus 0000:00: root bus resource [mem 0x00000000-0xfffffffff]
[    0.851487] pci_bus 0000:00: root bus resource [bus 00]
[    0.852031] pci 0000:00:00.0: [8086:105e] type 00 class 0x020000
[    0.852419] pci 0000:00:00.0: reg 0x10: [mem 0xfe4a0000-0xfe4bffff]
[    0.852631] pci 0000:00:00.0: reg 0x14: [mem 0xfe480000-0xfe49ffff]
[    0.852743] pci 0000:00:00.0: reg 0x18: [io  0xe020-0xe03f]
[    0.853905] pcifront pci-0: New device on 0000:00:00.0 found.
[    0.857483] pcifront pci-0: claiming resource 0000:00:00.0/0
[    0.857490] pcifront pci-0: claiming resource 0000:00:00.0/1
[    0.857495] pcifront pci-0: claiming resource 0000:00:00.0/2
[    0.939621] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.942227] Non-volatile memory driver v1.3
[    0.942414] Linux agpgart interface v0.103
[    0.943295] [drm] Initialized drm 1.1.0 20060810
[    0.947952] loop: module loaded
[    0.948577] libphy: Fixed MDIO Bus: probed
[    0.948583] tun: Universal TUN/TAP device driver, 1.6
[    0.948588] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[    0.948913] ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver - version 2.7.12-k
[    0.948921] ixgbevf: Copyright (c) 2009 - 2012 Intel Corporation.
[    0.950031] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.950039] ehci_hcd: block sizes: qh 112 qtd 96 itd 192 sitd 96
[    0.950061] ehci-pci: EHCI PCI platform driver
[    0.950201] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.950207] ohci_hcd: block sizes: ed 80 td 96
[    0.950357] uhci_hcd: USB Universal Host Controller Interface driver
[    0.950736] usbcore: registered new interface driver usblp
[    0.951285] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.960646] i8042: No controller found
[    1.960872] mousedev: PS/2 mouse device common for all mice
[    2.021775] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    2.021941] rtc_cmos: probe of rtc_cmos failed with error -38
[    2.023233] zram: Created 1 device(s) ...
[    2.023567] Netfilter messages via NETLINK v0.30.
[    2.023612] nf_conntrack version 0.5.0 (7930 buckets, 31720 max)
[    2.023775] ctnetlink v0.93: registering with nfnetlink.
[    2.024045] ip_tables: (C) 2000-2006 Netfilter Core Team
[    2.024170] TCP: cubic registered
[    2.024177] Initializing XFRM netlink socket
[    2.024379] NET: Registered protocol family 10
[    2.024936] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    2.025259] sit: IPv6 over IPv4 tunneling driver
[    2.026039] NET: Registered protocol family 17
[    2.026320] Key type dns_resolver registered
[    2.026874] PM: Hibernation image not present or could not be loaded.
[    2.026922] registered taskstats version 1
[    2.027005] kmemleak: Kernel memory leak detector initialized
[    2.027009] kmemleak: Automatic memory scanning thread started
[    2.027437] XENBUS: Device with no driver: device/vbd/51712
[    2.027537]   Magic number: 1:252:3141
[    2.029169] Freeing unused kernel memory: 1724k freed
[    2.029408] Write protecting the kernel read-only data: 10240k
[    2.033649] Freeing unused kernel memory: 1480k freed
[    2.033908] Freeing unused kernel memory: 72k freed

init started: BusyBox v1.14.3 (2013-06-07 10:58:39 EDT)
[    2.040621] consoletype (1038) used greatest stack depth: 5304 bytes left
Mounting directories  [  OK  ]
[    2.059689] chmod (1044) used greatest stack depth: 4856 bytes left
mount: mount point /proc/bus/usb does not exist
mount: mount point /sys/kernel/config does not exist
[    2.266374] Initialising Xen virtual ethernet driver.
[    2.273190] vbd vbd-51712: blkfront:blkback_changed to state 2.
[    2.283349] vbd vbd-51712: blkfront:blkback_changed to state 4.
[    2.283356] vbd vbd-51712: blkfront_connect:/local/domain/0/backend/vbd/2/51712.
[    2.287707] blkfront: xvda: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: enabled;
[    2.288337] Entered do_blkif_request
[    2.288344] Entered do_blkif_request
[    2.288821] Entered do_blkif_request
[    2.288829] do_blk_req ffff880108ec9e10: cmd ffff880108ec9f00, sec 0, (4/4) buffer:ffff880108ee6000 [read]
[    2.288839] Entered do_blkif_request
[    2.288859] Entered do_blkif_request
[    2.288864] do_blk_req ffff880108ec9cb8: cmd ffff880108ec9da8, sec 4, (4/4) buffer:ffff880108ee6800 [read]
[    2.288871] Entered do_blkif_request
[    2.292721] Entered do_blkif_request
[    2.292727] Entered do_blkif_request
[    2.292737] Entered do_blkif_request
[    2.292741] Entered do_blkif_request
[    2.292780] Entered do_blkif_request
[    2.292786] do_blk_req ffff880108ec9cb8: cmd ffff880108ec9da8, sec 8, (4/4) buffer:ffff88010f273000 [read]
[    2.292794] Entered do_blkif_request
[    2.292811] Entered do_blkif_request
[    2.292816] do_blk_req ffff880108ec9e10: cmd ffff880108ec9f00, sec c, (4/4) buffer:ffff88010f273800 [read]
[    2.292822] Entered do_blkif_request
[    2.292940] Entered do_blkif_request
[    2.292947] Entered do_blkif_request
[    2.292957] Entered do_blkif_request
[    2.292961] Entered do_blkif_request
[    2.292974]  xvda: unknown partition table
[    2.385804] udevd (1099): /proc/1099/oom_adj is deprecated, please use /proc/1099/oom_score_adj instead.
[    2.444038] e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
[    2.444061] e1000e: Copyright(c) 1999 - 2013 Intel Corporation.
[    2.444110] e1000e 0000:00:00.0: Disabling ASPM  L1
[    2.444232] e1000e 0000:00:00.0: enabling device (0000 -> 0002)
[    2.447244] e1000e 0000:00:00.0: Xen PCI mapped GSI16 to IRQ34
[    2.447790] e1000e 0000:00:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
udevd-work[1106]: error opening ATTR{/sys/devices/system/cpu/cpu0/online} for writing: No such file or directory

[    2.459644] vbd vbd-51712: command: 0x5331, argument: 0x0
[    2.560213] ip (1325) used greatest stack depth: 3760 bytes left
[    2.624581] e1000e 0000:00:00.0 eth0: (PCI Express:2.5GT/s:Width x4) 00:15:17:8f:18:a2
[    2.624595] e1000e 0000:00:00.0 eth0: Intel(R) PRO/1000 Network Connection
[    2.624675] e1000e 0000:00:00.0 eth0: MAC: 0, PHY: 4, PBA No: D50868-003
Waiting for devices [  OK  ]
Waiting for fb [  OK  ]
Starting..[/dev/fb0]
Could not open; err: 2
FATAL: Module agpgart_intel not found.
[    2.814571] [drm] radeon kernel modesetting enabled.
WARNING: Error inserting video (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/acpi/video.ko): No such device
WARNING: Error inserting mxm_wmi (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/platform/x86/mxm-wmi.ko): No such device
WARNING: Error inserting drm_kms_helper (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/gpu/drm/drm_kms_helper.ko): No such device
WARNING: Error inserting ttm (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/gpu/drm/ttm/ttm.ko): No such device
FATAL: Error inserting nouveau (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/gpu/drm/nouveau/nouveau.ko): No such device
WARNING: Error inserting drm_kms_helper (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/gpu/drm/drm_kms_helper.ko): No such device
FATAL: Error inserting i915 (/lib/modules/3.10.0-rc4upstream-00172-g909fe9e-dirty/kernel/drivers/gpu/drm/i915/i915.ko): No such device
Starting..[/dev/fb0]
Could not open; err: 2
VGA: 0000:
Waiting for network [  OK  ]
Bringing up loopback interface:  [  OK  ]
Bringing up interface eth0:  [    3.394987] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    3.397647] device eth0 entered promiscuous mode
[  OK  ]
Bringing up interface switch:  
Determining IP information for switch...[    3.452997] IPv6: ADDRCONF(NETDEV_UP): switch: link is not ready
[    5.533965] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[    5.534117] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    5.534222] switch: port 1(eth0) entered forwarding state
[    5.534239] switch: port 1(eth0) entered forwarding state
[    5.534302] IPv6: ADDRCONF(NETDEV_CHANGE): switch: link becomes ready
 done.
[  OK  ]
Waiting for init.custom [  OK  ]

Starting SSHd ...

    SSH started [2202]


Waiting for SSHd [  OK  ]
WARNING: ssh currently running [2202] ignoring start request
FATAL: Module dump_dma not found.
ERROR: Module dump_dma does not exist in /proc/modules
[    9.129856] SCSI subsystem initialized
[    9.131318] Loading iSCSI transport class v2.0-870.
[    9.134894] iscsi: registered transport (tcp)
hostname: Name or service not known
iscsistart: transport class version 2.0-870. iscsid version 2.0-872
Could not get list of targets from firmware.
Jun  7 15:21:14 (none) syslogd 1.5.0: restart.
Running in PV context on Xen v4.3.
FATAL: Module evtchn not found.
[    9.176036] Event-channel device installed.
00:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)
           CPU0       CPU1       
 16:       2600          0  xen-percpu-virq      timer0
 17:          0          0  xen-percpu-ipi       spinlock0
 18:       3473          0  xen-percpu-ipi       resched0
 19:          0          0  xen-percpu-ipi       callfunc0
 20:          0          0  xen-percpu-virq      debug0
 21:        237          0  xen-percpu-ipi       callfuncsingle0
 22:          0          0  xen-percpu-ipi       irqwork0
 23:          0       2560  xen-percpu-virq      timer1
 24:          0          0  xen-percpu-ipi       spinlock1
 25:          0       3833  xen-percpu-ipi       resched1
 26:          0          0  xen-percpu-ipi       callfunc1
 27:          0          0  xen-percpu-virq      debug1
 28:          0        271  xen-percpu-ipi       callfuncsingle1
 29:          0          0  xen-percpu-ipi       irqwork1
 30:        235          0   xen-dyn-event     xenbus
 31:         64          0   xen-dyn-event     pcifront
 32:         89          0   xen-dyn-event     hvc_console
 33:          4          0   xen-dyn-event     blkif
 35:         27          0  xen-pirq-pcifront-msi  eth0
NMI:          0          0   Non-maskable interrupts
LOC:          0          0   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RTR:          0          0   APIC ICR read retries
RES:       3473       3833   Rescheduling interrupts
CAL:        237        271   Function call interrupts
TLB:          0          0   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          0          0   Machine check polls
ERR:          0
MIS:          0
00000000-00000fff : reserved
00001000-0009ffff : System RAM
000a0000-000fffff : reserved
  000f0000-000fffff : System ROM
00100000-1fffffff : System RAM
  01000000-0168a927 : Kernel code
  0168a928-01aad2bf : Kernel data
  01c65000-01d74fff : Kernel bss
20200000-3fffffff : Unusable memory
40200000-c6cd3fff : Unusable memory
c6cd4000-c6d1cfff : ACPI Non-volatile Storage
c6d1d000-c6d27fff : ACPI Tables
c6d28000-c6d28fff : ACPI Non-volatile Storage
c6d4a000-c6d4bfff : Unusable memory
c6d4c000-c6d6cfff : ACPI Non-volatile Storage
c6d90000-c6d9cfff : ACPI Non-volatile Storage
c6da0000-c6db0fff : ACPI Non-volatile Storage
c6ddd000-c6e1ffff : ACPI Non-volatile Storage
c6e20000-c6ffffff : Unusable memory
fe480000-fe49ffff : 0000:00:00.0
  fe480000-fe49ffff : e1000e
fe4a0000-fe4bffff : 0000:00:00.0
  fe4a0000-fe4bffff : e1000e
100000000-11fffffff : System RAM
MemTotal:        1018432 kB
MemFree:          641536 kB
Buffers:               0 kB
Cached:           310180 kB
SwapCached:            0 kB
Active:            19368 kB
Inactive:         290652 kB
Active(anon):      13120 kB
Inactive(anon):    84540 kB
Active(file):       6248 kB
Inactive(file):   206112 kB
Unevictable:        4940 kB
Mlocked:            4940 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:          4684 kB
Mapped:             5152 kB
Shmem:             94284 kB
Slab:              45924 kB
SReclaimable:      12804 kB
SUnreclaim:        33120 kB
KernelStack:         432 kB
PageTables:          692 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:      509216 kB
Committed_AS:     102792 kB
VmallocTotal:   34359738367 kB
VmallocUsed:        2332 kB
VmallocChunk:   34359735931 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:     1048576 kB
DirectMap2M:           0 kB
Waiting for init.late [  OK  ]
PING build.dumpdata.com (192.168.102.1) 56(84) bytes of data.

--- build.dumpdata.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.208/0.208/0.208/0.000 ms
[    9.336320] mount.nfs (2304) used greatest stack depth: 3320 bytes left
mount.nfs: access denied by server while mounting build:/srv/results
NFS done
/init.late: line 13: can't create /mnt/results/dmesg/(none)-3.10.0-rc4upstream-00172-g909fe9e-dirty.dmesg: nonexistent directory
 [0x0->0x20000] pfn
 [0x0->0x20000] level entry
 [0x20000->0x100000] identity
 [0x20000->0x100000] level middle
 [0x100000->0x120000] pfn
 [0x100000->0x120000] level entry
 [0x120000->0x140000] level middle
 [0x120000->0x7cfffff] missing
 [0x140000->0x7cfffff] level top
/init.late: line 17: can't create /mnt/results/p2m/(none)-3.10.0-rc4upstream-00172-g909fe9e-dirty.p2m: nonexistent directory
libxl: error: libxl.c:87:libxl_ctx_alloc: Is xenstore daemon running?
failed to stat /var/run/xenstored.pid: No such file or directory
cannot init xl context
[    9.669091] device-mapper: ioctl: 4.24.0-ioctl (2013-01-15) initialised: dm-devel@xxxxxxxxxx
[    9.670252] device-mapper: multipath: version 1.5.1 loaded
PING 192.168.101.2 (192.168.101.2) 56(84) bytes of data.
kill -1 1

--- 192.168.101.2 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 10000ms

/init.late: line 34: boot_parameter: not found
[   20.576092] switch: port 1(eth0) entered forwarding state
 7 Jun 15:21:27 ntpdate[2323]: adjust time server 17.171.4.15 offset -0.265117 sec
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
Fri Jun  7 15:21:27 UTC 2013
Jun  7 15:21:27 (none) init: starting pid 2333, tty '/dev/tty0': '/bin/sh'
Jun  7 15:21:27 (none) init: starting pid 2334, tty '/dev/tty1': '/bin/sh'
Jun  7 15:21:27 (none) init: starting pid 2335, tty '/dev/ttyS0': '/bin/sh'
Jun  7 15:21:27 (none) init: starting pid 2336, tty '/dev/hvc0': '/bin/sh'


BusyBox v1.14.3 (2013-06-07 10:58:39 EDT) built-in shell (ash)
Enter 'help' for a list of built-in commands.

# kill -1 1
# Jun  7 15:21:27 (none) init: reloading /etc/inittab

# m dmesg
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.10.0-rc4upstream-00172-g909fe9e-dirty (konrad@xxxxxxxxxxxxxxxxxxx) (gcc version 4.4.4 20100503 (Red Hat 4.4.4-2) (GCC) ) #2 SMP Fri Jun 7 10:55:54 EDT 2013
[    0.000000] Command line: console=hvc0 debug 
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] Freeing 20000-40000 pfn range: 131072 pages freed
[    0.000000] 1-1 mapping on 20000->100000
[    0.000000] Released 131072 pages of unused memory
[    0.000000] Set 917504 page(s) to 1-1 mapping
[    0.000000] Populating 100000-120000 pfn range: 131072 pages added
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x000000001fffffff] usable
[    0.000000] Xen: [mem 0x0000000020000000-0x00000000201fffff] reserved
[    0.000000] Xen: [mem 0x0000000020200000-0x000000003fffffff] unusable
[    0.000000] Xen: [mem 0x0000000040000000-0x00000000401fffff] reserved
[    0.000000] Xen: [mem 0x0000000040200000-0x00000000c6cd3fff] unusable
[    0.000000] Xen: [mem 0x00000000c6cd4000-0x00000000c6d1cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d1d000-0x00000000c6d27fff] ACPI data
[    0.000000] Xen: [mem 0x00000000c6d28000-0x00000000c6d28fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d29000-0x00000000c6d49fff] reserved
[    0.000000] Xen: [mem 0x00000000c6d4a000-0x00000000c6d4bfff] unusable
[    0.000000] Xen: [mem 0x00000000c6d4c000-0x00000000c6d6cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d6d000-0x00000000c6d8ffff] reserved
[    0.000000] Xen: [mem 0x00000000c6d90000-0x00000000c6d9cfff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6d9d000-0x00000000c6d9ffff] reserved
[    0.000000] Xen: [mem 0x00000000c6da0000-0x00000000c6db0fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6db1000-0x00000000c6ddcfff] reserved
[    0.000000] Xen: [mem 0x00000000c6ddd000-0x00000000c6e1ffff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000c6e20000-0x00000000c6ffffff] unusable
[    0.000000] Xen: [mem 0x00000000c7800000-0x00000000cf9fffff] reserved
[    0.000000] Xen: [mem 0x00000000fed1c000-0x00000000fed3ffff] reserved
[    0.000000] Xen: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] Xen: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] Xen: [mem 0x0000000100000000-0x000000011fffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI not present or invalid.
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] No AGP bridge found
[    0.000000] e820: last_pfn = 0x120000 max_arch_pfn = 0x400000000
[    0.000000] e820: last_pfn = 0x20000 max_arch_pfn = 0x400000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Base memory trampoline at [ffff88000009a000] 9a000 size 24576
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000]  [mem 0x00000000-0x000fffff] page 4k
[    0.000000] init_memory_mapping: [mem 0x11fe00000-0x11fffffff]
[    0.000000]  [mem 0x11fe00000-0x11fffffff] page 4k
[    0.000000] BRK [0x01d8a000, 0x01d8afff] PGTABLE
[    0.000000] BRK [0x01d8b000, 0x01d8bfff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x11c000000-0x11fdfffff]
[    0.000000]  [mem 0x11c000000-0x11fdfffff] page 4k
[    0.000000] BRK [0x01d8c000, 0x01d8cfff] PGTABLE
[    0.000000] BRK [0x01d8d000, 0x01d8dfff] PGTABLE
[    0.000000] BRK [0x01d8e000, 0x01d8efff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x100000000-0x11bffffff]
[    0.000000]  [mem 0x100000000-0x11bffffff] page 4k
[    0.000000] init_memory_mapping: [mem 0x00100000-0x1fffffff]
[    0.000000]  [mem 0x00100000-0x1fffffff] page 4k
[    0.000000] RAMDISK: [mem 0x02197000-0x13f67fff]
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000011fffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x11fffffff]
[    0.000000]   NODE_DATA [mem 0x11fea2000-0x11fea5fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0xffffffff]
[    0.000000]   Normal   [mem 0x100000000-0x11fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0009ffff]
[    0.000000]   node   0: [mem 0x00100000-0x1fffffff]
[    0.000000]   node   0: [mem 0x100000000-0x11fffffff]
[    0.000000] On node 0 totalpages: 262047
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3999 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 1736 pages used for memmap
[    0.000000]   DMA32 zone: 126976 pages, LIFO batch:31
[    0.000000]   Normal zone: 1792 pages used for memmap
[    0.000000]   Normal zone: 131072 pages, LIFO batch:31
[    0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] No local APIC present
[    0.000000] APIC: disable apic facility
[    0.000000] APIC: switched to apic NOOP
[    0.000000] nr_irqs_gsi: 16
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 0000000020000000 - 0000000020200000
[    0.000000] PM: Registered nosave memory: 0000000020200000 - 0000000040000000
[    0.000000] PM: Registered nosave memory: 0000000040000000 - 0000000040200000
[    0.000000] PM: Registered nosave memory: 0000000040200000 - 00000000c6cd4000
[    0.000000] PM: Registered nosave memory: 00000000c6cd4000 - 00000000c6d1d000
[    0.000000] PM: Registered nosave memory: 00000000c6d1d000 - 00000000c6d28000
[    0.000000] PM: Registered nosave memory: 00000000c6d28000 - 00000000c6d29000
[    0.000000] PM: Registered nosave memory: 00000000c6d29000 - 00000000c6d4a000
[    0.000000] PM: Registered nosave memory: 00000000c6d4a000 - 00000000c6d4c000
[    0.000000] PM: Registered nosave memory: 00000000c6d4c000 - 00000000c6d6d000
[    0.000000] PM: Registered nosave memory: 00000000c6d6d000 - 00000000c6d90000
[    0.000000] PM: Registered nosave memory: 00000000c6d90000 - 00000000c6d9d000
[    0.000000] PM: Registered nosave memory: 00000000c6d9d000 - 00000000c6da0000
[    0.000000] PM: Registered nosave memory: 00000000c6da0000 - 00000000c6db1000
[    0.000000] PM: Registered nosave memory: 00000000c6db1000 - 00000000c6ddd000
[    0.000000] PM: Registered nosave memory: 00000000c6ddd000 - 00000000c6e20000
[    0.000000] PM: Registered nosave memory: 00000000c6e20000 - 00000000c7000000
[    0.000000] PM: Registered nosave memory: 00000000c7000000 - 00000000c7800000
[    0.000000] PM: Registered nosave memory: 00000000c7800000 - 00000000cfa00000
[    0.000000] PM: Registered nosave memory: 00000000cfa00000 - 00000000fed1c000
[    0.000000] PM: Registered nosave memory: 00000000fed1c000 - 00000000fed40000
[    0.000000] PM: Registered nosave memory: 00000000fed40000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fee01000
[    0.000000] PM: Registered nosave memory: 00000000fee01000 - 00000000ff000000
[    0.000000] PM: Registered nosave memory: 00000000ff000000 - 0000000100000000
[    0.000000] e820: [mem 0xcfa00000-0xfed1bfff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.3-unstable (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 28 pages/cpu @ffff88011f800000 s85632 r8192 d20864 u1048576
[    0.000000] pcpu-alloc: s85632 r8192 d20864 u1048576 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 258442
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: console=hvc0 debug 
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x340
[    0.000000] Checking aperture...
[    0.000000] No AGP bridge found
[    0.000000] Memory: 722480k/4718592k available (6698k kernel code, 3670404k absent, 325708k reserved, 4234k data, 1724k init)
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=512 to nr_cpu_ids=2.
[    0.000000] NR_IRQS:33024 nr_irqs:288 16
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [hvc0] enabled
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.000000] tsc: Detected 3092.926 MHz processor
[    0.001000] Calibrating delay loop (skipped), value calculated using timer frequency.. 6185.85 BogoMIPS (lpj=3092926)
[    0.001000] pid_max: default: 32768 minimum: 301
[    0.001000] Security Framework initialized
[    0.001000] SELinux:  Initializing.
[    0.001000] SELinux:  Starting in permissive mode
[    0.001000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.001000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.001000] Mount-cache hash table entries: 256
[    0.001582] Initializing cgroup subsys freezer
[    0.001698] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.001698] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)
[    0.001708] CPU: Physical Processor ID: 0
[    0.001712] CPU: Processor Core ID: 0
[    0.001718] Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0
[    0.001718] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32
[    0.001718] tlb_flushall_shift: 5
[    0.025468] cpu 0 spinlock event irq 17
[    0.025566] Performance Events: unsupported p6 CPU model 42 no PMU driver, software events only.
[    0.026081] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.026680] installing Xen timer for CPU 1
[    0.026723] cpu 1 spinlock event irq 24
[    0.026793] SMP alternatives: switching to SMP code
[    0.048014] Brought up 2 CPUs
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6cd4000-0xc6d1cfff] (299008 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d28000-0xc6d28fff] (4096 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d4c000-0xc6d6cfff] (135168 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6d90000-0xc6d9cfff] (53248 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6da0000-0xc6db0fff] (69632 bytes)
[    0.051334] PM: Registering ACPI NVS region [mem 0xc6ddd000-0xc6e1ffff] (274432 bytes)
[    0.051399] kworker/u4:0 (19) used greatest stack depth: 6016 bytes left
[    0.052492] Grant tables using version 2 layout.
[    0.052492] Grant table initialized
[    0.071696] RTC time: 165:165:165, date: 165/165/65
[    0.071985] NET: Registered protocol family 16
[    0.072173] kworker/u4:0 (22) used greatest stack depth: 5928 bytes left
[    0.073110] kworker/u4:0 (30) used greatest stack depth: 5464 bytes left
[    0.074030] dca service started, version 1.12.1
[    0.074563] PCI: setting up Xen PCI frontend stub
[    0.074568] PCI: pci_cache_line_size set to 64 bytes
[    0.101148] bio: create slab <bio-0> at 0
[    0.101220] ACPI: Interpreter disabled.
[    0.102003] xen/balloon: Initialising balloon driver.
[    0.103081] xen-balloon: Initialising balloon driver.
[    0.104136] vgaarb: loaded
[    0.105135] usbcore: registered new interface driver usbfs
[    0.105135] usbcore: registered new interface driver hub
[    0.105135] usbcore: registered new device driver usb
[    0.106089] pps_core: LinuxPPS API ver. 1 registered
[    0.106089] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[    0.106089] PTP clock support registered
[    0.106089] PCI: System does not support PCI
[    0.106089] PCI: System does not support PCI
[    0.107154] NetLabel: Initializing
[    0.107154] NetLabel:  domain hash size = 128
[    0.107154] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.107175] NetLabel:  unlabeled traffic allowed by default
[    0.108087] Switching to clocksource xen
[    0.125349] pnp: PnP ACPI: disabled
[    0.138965] NET: Registered protocol family 2
[    0.139578] TCP established hash table entries: 8192 (order: 5, 131072 bytes)
[    0.139647] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[    0.139668] TCP: Hash tables configured (established 8192 bind 8192)
[    0.193672] TCP: reno registered
[    0.193693] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.193712] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.194030] NET: Registered protocol family 1
[    0.194380] RPC: Registered named UNIX socket transport module.
[    0.194389] RPC: Registered udp transport module.
[    0.194394] RPC: Registered tcp transport module.
[    0.194398] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.194404] PCI: CLS 0 bytes, default 64
[    0.194570] Unpacking initramfs...
[    0.778545] Freeing initrd memory: 292676k freed
[    0.823501] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    0.823855] Machine check injector initialized
[    0.825040] Scanning for low memory corruption every 60 seconds
[    0.826072] audit: initializing netlink socket (disabled)
[    0.826114] type=2000 audit(1370618465.698:1): initialized
[    0.839204] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.839673] VFS: Disk quotas dquot_6.5.2
[    0.839760] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.840528] NFS: Registering the id_resolver key type
[    0.840553] Key type id_resolver registered
[    0.840558] Key type id_legacy registered
[    0.840587] NTFS driver 2.1.30 [Flags: R/W].
[    0.840919] msgmni has been set to 1982
[    0.841082] SELinux:  Registering netfilter hooks
[    0.842697] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.842706] io scheduler noop registered
[    0.842710] io scheduler deadline registered
[    0.842772] io scheduler cfq registered (default)
[    0.843309] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    0.846284] intel_idle: does not run on family 6 model 42
[    0.846299] ioatdma: Intel(R) QuickData Technology Driver 4.00
[    0.847400] pcifront pci-0: Installing PCI frontend
[    0.847417] Warning: only able to allocate 4 MB for software IO TLB
[    0.850807] software IO TLB [mem 0x109000000-0x109400000] (4MB) mapped at [ffff880109000000-ffff8801093fffff]
[    0.851175] pcifront pci-0: Creating PCI Frontend Bus 0000:00
[    0.851458] pcifront pci-0: PCI host bridge to bus 0000:00
[    0.851469] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    0.851478] pci_bus 0000:00: root bus resource [mem 0x00000000-0xfffffffff]
[    0.851487] pci_bus 0000:00: root bus resource [bus 00]
[    0.852031] pci 0000:00:00.0: [8086:105e] type 00 class 0x020000
[    0.852419] pci 0000:00:00.0: reg 0x10: [mem 0xfe4a0000-0xfe4bffff]
[    0.852631] pci 0000:00:00.0: reg 0x14: [mem 0xfe480000-0xfe49ffff]
[    0.852743] pci 0000:00:00.0: reg 0x18: [io  0xe020-0xe03f]
[    0.853905] pcifront pci-0: New device on 0000:00:00.0 found.
[    0.857483] pcifront pci-0: claiming resource 0000:00:00.0/0
[    0.857490] pcifront pci-0: claiming resource 0000:00:00.0/1
[    0.857495] pcifront pci-0: claiming resource 0000:00:00.0/2
[    0.939621] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.942227] Non-volatile memory driver v1.3
[    0.942414] Linux agpgart interface v0.103
[    0.943295] [drm] Initialized drm 1.1.0 20060810
[    0.947952] loop: module loaded
[    0.948577] libphy: Fixed MDIO Bus: probed
[    0.948583] tun: Universal TUN/TAP device driver, 1.6
[    0.948588] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[    0.948913] ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver - version 2.7.12-k
[    0.948921] ixgbevf: Copyright (c) 2009 - 2012 Intel Corporation.
[    0.950031] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.950039] ehci_hcd: block sizes: qh 112 qtd 96 itd 192 sitd 96
[    0.950061] ehci-pci: EHCI PCI platform driver
[    0.950201] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.950207] ohci_hcd: block sizes: ed 80 td 96
[    0.950357] uhci_hcd: USB Universal Host Controller Interface driver
[    0.950736] usbcore: registered new interface driver usblp
[    0.951285] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.960646] i8042: No controller found
[    1.960872] mousedev: PS/2 mouse device common for all mice
[    2.021775] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    2.021941] rtc_cmos: probe of rtc_cmos failed with error -38
[    2.023233] zram: Created 1 device(s) ...
[    2.023567] Netfilter messages via NETLINK v0.30.
[    2.023612] nf_conntrack version 0.5.0 (7930 buckets, 31720 max)
[    2.023775] ctnetlink v0.93: registering with nfnetlink.
[    2.024045] ip_tables: (C) 2000-2006 Netfilter Core Team
[    2.024170] TCP: cubic registered
[    2.024177] Initializing XFRM netlink socket
[    2.024379] NET: Registered protocol family 10
[    2.024936] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    2.025259] sit: IPv6 over IPv4 tunneling driver
[    2.026039] NET: Registered protocol family 17
[    2.026320] Key type dns_resolver registered
[    2.026874] PM: Hibernation image not present or could not be loaded.
[    2.026922] registered taskstats version 1
[    2.027005] kmemleak: Kernel memory leak detector initialized
[    2.027009] kmemleak: Automatic memory scanning thread started
[    2.027437] XENBUS: Device with no driver: device/vbd/51712
[    2.027537]   Magic number: 1:252:3141
[    2.029169] Freeing unused kernel memory: 1724k freed
[    2.029408] Write protecting the kernel read-only data: 10240k
[    2.033649] Freeing unused kernel memory: 1480k freed
[    2.033908] Freeing unused kernel memory: 72k freed
[    2.040621] consoletype (1038) used greatest stack depth: 5304 bytes left
[    2.059689] chmod (1044) used greatest stack depth: 4856 bytes left
[    2.266374] Initialising Xen virtual ethernet driver.
[    2.273190] vbd vbd-51712: blkfront:blkback_changed to state 2.
[    2.283349] vbd vbd-51712: blkfront:blkback_changed to state 4.
[    2.283356] vbd vbd-51712: blkfront_connect:/local/domain/0/backend/vbd/2/51712.
[    2.287707] blkfront: xvda: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: enabled;
[    2.288337] Entered do_blkif_request
[    2.288344] Entered do_blkif_request
[    2.288821] Entered do_blkif_request
[    2.288829] do_blk_req ffff880108ec9e10: cmd ffff880108ec9f00, sec 0, (4/4) buffer:ffff880108ee6000 [read]
[    2.288839] Entered do_blkif_request
[    2.288859] Entered do_blkif_request
[    2.288864] do_blk_req ffff880108ec9cb8: cmd ffff880108ec9da8, sec 4, (4/4) buffer:ffff880108ee6800 [read]
[    2.288871] Entered do_blkif_request
[    2.292721] Entered do_blkif_request
[    2.292727] Entered do_blkif_request
[    2.292737] Entered do_blkif_request
[    2.292741] Entered do_blkif_request
[    2.292780] Entered do_blkif_request
[    2.292786] do_blk_req ffff880108ec9cb8: cmd ffff880108ec9da8, sec 8, (4/4) buffer:ffff88010f273000 [read]
[    2.292794] Entered do_blkif_request
[    2.292811] Entered do_blkif_request
[    2.292816] do_blk_req ffff880108ec9e10: cmd ffff880108ec9f00, sec c, (4/4) buffer:ffff88010f273800 [read]
[    2.292822] Entered do_blkif_request
[    2.292940] Entered do_blkif_request
[    2.292947] Entered do_blkif_request
[    2.292957] Entered do_blkif_request
[    2.292961] Entered do_blkif_request
[    2.292974]  xvda: unknown partition table
[    2.385804] udevd (1099): /proc/1099/oom_adj is deprecated, please use /proc/1099/oom_score_adj instead.
[    2.444038] e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
[    2.444061] e1000e: Copyright(c) 1999 - 2013 Intel Corporation.
[    2.444110] e1000e 0000:00:00.0: Disabling ASPM  L1
[    2.444232] e1000e 0000:00:00.0: enabling device (0000 -> 0002)
[    2.447244] e1000e 0000:00:00.0: Xen PCI mapped GSI16 to IRQ34
[    2.447790] e1000e 0000:00:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[    2.459644] vbd vbd-51712: command: 0x5331, argument: 0x0
[    2.560213] ip (1325) used greatest stack depth: 3760 bytes left
[    2.624581] e1000e 0000:00:00.0 eth0: (PCI Express:2.5GT/s:Width x4) 00:15:17:8f:18:a2
[    2.624595] e1000e 0000:00:00.0 eth0: Intel(R) PRO/1000 Network Connection
[    2.624675] e1000e 0000:00:00.0 eth0: MAC: 0, PHY: 4, PBA No: D50868-003
[    2.814571] [drm] radeon kernel modesetting enabled.
[    3.394987] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    3.397647] device eth0 entered promiscuous mode
[    3.452997] IPv6: ADDRCONF(NETDEV_UP): switch: link is not ready
[    5.533965] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[    5.534117] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    5.534222] switch: port 1(eth0) entered forwarding state
[    5.534239] switch: port 1(eth0) entered forwarding state
[    5.534302] IPv6: ADDRCONF(NETDEV_CHANGE): switch: link becomes ready
[    9.129856] SCSI subsystem initialized
[    9.131318] Loading iSCSI transport class v2.0-870.
[    9.134894] iscsi: registered transport (tcp)
[    9.176036] Event-channel device installed.
[    9.336320] mount.nfs (2304) used greatest stack depth: 3320 bytes left
[    9.669091] device-mapper: ioctl: 4.24.0-ioctl (2013-01-15) initialised: dm-devel@xxxxxxxxxx
[    9.670252] device-mapper: multipath: version 1.5.1 loaded
[   20.576092] switch: port 1(eth0) entered forwarding state
# lspci
00:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)
# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:15:17:8F:18:A2  
          inet6 addr: fe80::215:17ff:fe8f:18a2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:116 errors:0 dropped:0 overruns:0 frame:0
          TX packets:141 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:12017 (11.7 KiB)  TX bytes:13404 (13.0 KiB)
          Interrupt:34 Memory:fe4a0000-fe4c0000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:520 (520.0 b)  TX bytes:520 (520.0 b)

switch    Link encap:Ethernet  HWaddr 00:15:17:8F:18:A2  
          inet addr:192.168.102.210  Bcast:192.168.102.255  Mask:255.255.255.0
          inet6 addr: fe80::215:17ff:fe8f:18a2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:116 errors:0 dropped:0 overruns:0 frame:0
          TX packets:134 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:9929 (9.6 KiB)  TX bytes:12244 (11.9 KiB)

# eth
# ethtool -i eth0
driver: e1000e
version: 2.3.2-k
firmware-version: 5.11-2
bus-info: 0000:00:00.0
# rmmod e1000e
[   39.032406] switch: port 1(eth0) entered disabled state
[   39.032576] device eth0 left promiscuous mode
[   39.032583] switch: port 1(eth0) entered disabled state
# miod   odprobe e1000e
[   42.614015] e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
[   42.614026] e1000e: Copyright(c) 1999 - 2013 Intel Corporation.
[   42.614080] e1000e 0000:00:00.0: Disabling ASPM  L1
[   42.614172] xen_map_pirq_gsi: returning irq 34 for gsi 16
[   42.614181] e1000e 0000:00:00.0: Xen PCI mapped GSI16 to IRQ34
[   42.615024] e1000e 0000:00:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[   42.790351] e1000e 0000:00:00.0 eth0: (PCI Express:2.5GT/s:Width x4) 00:15:17:8f:18:a2
[   42.790363] e1000e 0000:00:00.0 eth0: Intel(R) PRO/1000 Network Connection
[   42.790448] e1000e 0000:00:00.0 eth0: MAC: 0, PHY: 4, PBA No: D50868-003
# [   43.103936] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   43.106574] device eth0 entered promiscuous mode
rmmod e100[   45.190968] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[   45.191117] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   45.191210] switch: port 1(eth0) entered forwarding state
[   45.191227] switch: port 1(eth0) entered forwarding state
0e
[   46.621376] switch: port 1(eth0) entered disabled state
[   46.621538] device eth0 left promiscuous mode
[   46.621547] switch: port 1(eth0) entered disabled state
# 



DETACHING HERE..

# 
# [   53.802739] pcifront pci-0: Rescanning PCI Frontend Bus 0000:00
[   53.887894] pci_bus 0000:00: busn_res: [bus 00] is released
[   53.888042] ------------[ cut here ]------------
[   53.888055] WARNING: at /home/konrad/linux/include/linux/kref.h:47 klist_iter_init_node+0x3e/0x50()
[   53.888073] Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod libcrc32c crc32c radeon fbcon tileblit font bitblit softcursor ttm drm_kms_helper crc32c_intel xen_blkfront xen_netfront xen_fbfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront xenfs xen_privcmd [last unloaded: e1000e]
[   53.888151] CPU: 1 PID: 26 Comm: xenwatch Not tainted 3.10.0-rc4upstream-00172-g909fe9e-dirty #2
[   53.888158]  ffffffff819392b8 ffff88011e3c1b88 ffffffff8167a27d ffff88011e3c1bc8
[   53.888171]  ffffffff8108d1eb ffff880109536a00 ffff88011e3c1c18 0000000000000000
[   53.888186]  ffffffff8131c410 0000000000000000 ffff88011e3c1e70 ffff88011e3c1bd8
[   53.888197] Call Trace:
[   53.888203]  [<ffffffff8167a27d>] dump_stack+0x19/0x1b
[   53.888212]  [<ffffffff8108d1eb>] warn_slowpath_common+0x6b/0xa0
[   53.888220]  [<ffffffff8131c410>] ? pci_match_next_bus+0x10/0x10
[   53.888227]  [<ffffffff8108d235>] warn_slowpath_null+0x15/0x20
[   53.888234]  [<ffffffff81663b4e>] klist_iter_init_node+0x3e/0x50
[   53.888242]  [<ffffffff8142117d>] class_dev_iter_init+0x3d/0x50
[   53.888248]  [<ffffffff81421348>] class_find_device+0x38/0xb0
[   53.888255]  [<ffffffff8131c8aa>] pci_get_next_root_bus+0x4a/0x80
[   53.888262]  [<ffffffff8132f6a5>] pcifront_free_roots+0x25/0x60
[   53.888268]  [<ffffffff8132f6f1>] free_pdev+0x11/0x80
[   53.888274]  [<ffffffff8132f77a>] pcifront_xenbus_remove+0x1a/0x20
[   53.888283]  [<ffffffff813abae8>] xenbus_dev_remove+0x38/0x70
[   53.888289]  [<ffffffff8141ffc1>] __device_release_driver+0x61/0xd0
[   53.888296]  [<ffffffff81420148>] device_release_driver+0x28/0x40
[   53.888302]  [<ffffffff8141f296>] bus_remove_device+0x106/0x140
[   53.888310]  [<ffffffff8141d120>] device_del+0x110/0x1c0
[   53.888316]  [<ffffffff8141d1e1>] device_unregister+0x11/0x20
[   53.888323]  [<ffffffff813ab946>] xenbus_dev_changed+0x96/0x1d0
[   53.888331]  [<ffffffff81048bd6>] ? xen_spin_lock+0xa6/0x110
[   53.888338]  [<ffffffff813ad2f6>] frontend_changed+0x16/0x20
[   53.888345]  [<ffffffff813a9c5b>] xenwatch_thread+0xcb/0x190
[   53.888352]  [<ffffffff810b49d0>] ? wake_up_bit+0x40/0x40
[   53.888359]  [<ffffffff813a9b90>] ? xs_watch+0x60/0x60
[   53.888365]  [<ffffffff810b42e6>] kthread+0xc6/0xd0
[   53.888371]  [<ffffffff8103a149>] ? xen_end_context_switch+0x19/0x20
[   53.888378]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.888386]  [<ffffffff8168623c>] ret_from_fork+0x7c/0xb0
[   53.888392]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.888397] ---[ end trace 918a23c9bada3aed ]---
[   53.888402] ------------[ cut here ]------------
[   53.888407] WARNING: at /home/konrad/linux/lib/klist.c:189 klist_release+0x112/0x120()
[   53.888412] Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod libcrc32c crc32c radeon fbcon tileblit font bitblit softcursor ttm drm_kms_helper crc32c_intel xen_blkfront xen_netfront xen_fbfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront xenfs xen_privcmd [last unloaded: e1000e]
[   53.888478] CPU: 1 PID: 26 Comm: xenwatch Tainted: G        W    3.10.0-rc4upstream-00172-g909fe9e-dirty #2
[   53.888484]  ffffffff819a3648 ffff88011e3c1b18 ffffffff8167a27d ffff88011e3c1b58
[   53.888495]  ffffffff8108d1eb 0000000000000010 ffff880109533aa8 ffff880109533a90
[   53.888506]  ffffffff81421460 0000000000000000 dead000000100100 ffff88011e3c1b68
[   53.888517] Call Trace:
[   53.888523]  [<ffffffff8167a27d>] dump_stack+0x19/0x1b
[   53.888529]  [<ffffffff8108d1eb>] warn_slowpath_common+0x6b/0xa0
[   53.888536]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.888543]  [<ffffffff8108d235>] warn_slowpath_null+0x15/0x20
[   53.888549]  [<ffffffff81663c82>] klist_release+0x112/0x120
[   53.888556]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.888563]  [<ffffffff81663cb8>] klist_dec_and_del+0x28/0x30
[   53.888601]  [<ffffffff81663eb5>] klist_next+0x45/0x140
[   53.888608]  [<ffffffff8131c410>] ? pci_match_next_bus+0x10/0x10
[   53.888615]  [<ffffffff81421108>] class_dev_iter_next+0x18/0x50
[   53.888621]  [<ffffffff81421358>] class_find_device+0x48/0xb0
[   53.888628]  [<ffffffff8131c8aa>] pci_get_next_root_bus+0x4a/0x80
[   53.888634]  [<ffffffff8132f6a5>] pcifront_free_roots+0x25/0x60
[   53.888640]  [<ffffffff8132f6f1>] free_pdev+0x11/0x80
[   53.888646]  [<ffffffff8132f77a>] pcifront_xenbus_remove+0x1a/0x20
[   53.888653]  [<ffffffff813abae8>] xenbus_dev_remove+0x38/0x70
[   53.888660]  [<ffffffff8141ffc1>] __device_release_driver+0x61/0xd0
[   53.888667]  [<ffffffff81420148>] device_release_driver+0x28/0x40
[   53.888673]  [<ffffffff8141f296>] bus_remove_device+0x106/0x140
[   53.888680]  [<ffffffff8141d120>] device_del+0x110/0x1c0
[   53.888688]  [<ffffffff8141d1e1>] device_unregister+0x11/0x20
[   53.888694]  [<ffffffff813ab946>] xenbus_dev_changed+0x96/0x1d0
[   53.888701]  [<ffffffff81048bd6>] ? xen_spin_lock+0xa6/0x110
[   53.888708]  [<ffffffff813ad2f6>] frontend_changed+0x16/0x20
[   53.888714]  [<ffffffff813a9c5b>] xenwatch_thread+0xcb/0x190
[   53.888721]  [<ffffffff810b49d0>] ? wake_up_bit+0x40/0x40
[   53.888727]  [<ffffffff813a9b90>] ? xs_watch+0x60/0x60
[   53.888733]  [<ffffffff810b42e6>] kthread+0xc6/0xd0
[   53.888739]  [<ffffffff8103a149>] ? xen_end_context_switch+0x19/0x20
[   53.888746]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.888755]  [<ffffffff8168623c>] ret_from_fork+0x7c/0xb0
[   53.888761]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.888766] ---[ end trace 918a23c9bada3aee ]---
[   53.888776] general protection fault: 0000 [#1] SMP 
[   53.888783] Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod libcrc32c crc32c radeon fbcon tileblit font bitblit softcursor ttm drm_kms_helper crc32c_intel xen_blkfront xen_netfront xen_fbfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront xenfs xen_privcmd [last unloaded: e1000e]
[   53.888847] CPU: 1 PID: 26 Comm: xenwatch Tainted: G        W    3.10.0-rc4upstream-00172-g909fe9e-dirty #2
[   53.888853] task: ffff88011e2eb800 ti: ffff88011e3c0000 task.ti: ffff88011e3c0000
[   53.888859] RIP: e030:[<ffffffff81663baa>]  [<ffffffff81663baa>] klist_release+0x3a/0x120
[   53.888867] RSP: e02b:ffff88011e3c1b78  EFLAGS: 00010292
[   53.888872] RAX: dead000000200200 RBX: ffff880109533aa8 RCX: 0000006c3739ee67
[   53.888877] RDX: dead000000100100 RSI: dead000000200200 RDI: dead000000100100
[   53.888882] RBP: ffff88011e3c1b98 R08: 00000000a589f9bc R09: 0720072007200720
[   53.888887] R10: 0720072007200720 R11: 0720072007200720 R12: ffff880109533a90
[   53.888892] R13: ffffffff81421460 R14: 0000000000000000 R15: dead000000100100
[   53.888900] FS:  00007fe6ef1d97a0(0000) GS:ffff88011f900000(0000) knlGS:0000000000000000
[   53.888907] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.888912] CR2: 00007f1c4090ddd0 CR3: 000000010f0cd000 CR4: 0000000000042660
[   53.888917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.888923] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[   53.888928] Stack:
[   53.888932]  ffff880109533a90 ffff88011e3c1c18 ffff880109533a90 ffffffff81421460
[   53.888943]  ffff88011e3c1ba8 ffffffff81663cb8 ffff88011e3c1be8 ffffffff81663eb5
[   53.888954]  0000000000000000 ffff88011e3c1c18 0000000000000000 ffffffff8131c410
[   53.888965] Call Trace:
[   53.888971]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.888978]  [<ffffffff81663cb8>] klist_dec_and_del+0x28/0x30
[   53.888985]  [<ffffffff81663eb5>] klist_next+0x45/0x140
[   53.888992]  [<ffffffff8131c410>] ? pci_match_next_bus+0x10/0x10
[   53.888999]  [<ffffffff81421108>] class_dev_iter_next+0x18/0x50
[   53.889006]  [<ffffffff81421358>] class_find_device+0x48/0xb0
[   53.889012]  [<ffffffff8131c8aa>] pci_get_next_root_bus+0x4a/0x80
[   53.889020]  [<ffffffff8132f6a5>] pcifront_free_roots+0x25/0x60
[   53.889026]  [<ffffffff8132f6f1>] free_pdev+0x11/0x80
[   53.889032]  [<ffffffff8132f77a>] pcifront_xenbus_remove+0x1a/0x20
[   53.889039]  [<ffffffff813abae8>] xenbus_dev_remove+0x38/0x70
[   53.889046]  [<ffffffff8141ffc1>] __device_release_driver+0x61/0xd0
[   53.889054]  [<ffffffff81420148>] device_release_driver+0x28/0x40
[   53.889062]  [<ffffffff8141f296>] bus_remove_device+0x106/0x140
[   53.889064]  [<ffffffff8141d120>] device_del+0x110/0x1c0
[   53.889064]  [<ffffffff8141d1e1>] device_unregister+0x11/0x20
[   53.889064]  [<ffffffff813ab946>] xenbus_dev_changed+0x96/0x1d0
[   53.889064]  [<ffffffff81048bd6>] ? xen_spin_lock+0xa6/0x110
[   53.889064]  [<ffffffff813ad2f6>] frontend_changed+0x16/0x20
[   53.889064]  [<ffffffff813a9c5b>] xenwatch_thread+0xcb/0x190
[   53.889064]  [<ffffffff810b49d0>] ? wake_up_bit+0x40/0x40
[   53.889064]  [<ffffffff813a9b90>] ? xs_watch+0x60/0x60
[   53.889064]  [<ffffffff810b42e6>] kthread+0xc6/0xd0
[   53.889064]  [<ffffffff8103a149>] ? xen_end_context_switch+0x19/0x20
[   53.889064]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.889064]  [<ffffffff8168623c>] ret_from_fork+0x7c/0xb0
[   53.889064]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   53.889064] Code: fb 48 83 ec 08 f6 47 e8 01 0f 84 e3 00 00 00 48 8b 43 f8 48 8b 53 f0 48 bf 00 01 10 00 00 00 ad de 48 be 00 02 20 00 00 00 ad de <48> 89 42 08 48 89 10 48 89 7b f0 48 89 73 f8 48 c7 c7 54 44 d7 
[   53.889064] RIP  [<ffffffff81663baa>] klist_release+0x3a/0x120
[   53.889064]  RSP <ffff88011e3c1b78>
[   53.889285] ---[ end trace 918a23c9bada3aef ]---
[   53.889290] BUG: sleeping function called from invalid context at /home/konrad/linux/kernel/rwsem.c:20
[   53.889296] in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: xenwatch
[   53.889302] CPU: 1 PID: 26 Comm: xenwatch Tainted: G      D W    3.10.0-rc4upstream-00172-g909fe9e-dirty #2
[   53.889307]  000000000000000b ffff88011e3c1928 ffffffff8167a27d ffff88011e3c1938
[   53.889319]  ffffffff810bf5a8 ffff88011e3c1958 ffffffff8167b56f 0720072007200720
[   53.889331]  ffff88011e2eb800 ffff88011e3c1998 ffffffff810a279a 0000000000000000
[   53.889342] Call Trace:
[   53.889347]  [<ffffffff8167a27d>] dump_stack+0x19/0x1b
[   53.889354]  [<ffffffff810bf5a8>] __might_sleep+0xd8/0x100
[   53.889360]  [<ffffffff8167b56f>] down_read+0x1f/0x40
[   53.889368]  [<ffffffff810a279a>] exit_signals+0x2a/0x170
[   53.889374]  [<ffffffff81091ddf>] do_exit+0xaf/0xbe0
[   53.889380]  [<ffffffff8167a12e>] ? printk+0x48/0x4a
[   53.889387]  [<ffffffff810423f2>] ? check_events+0x12/0x20
[   53.889394]  [<ffffffff8167f220>] oops_end+0xb0/0xf0
[   53.889401]  [<ffffffff8104da06>] die+0x56/0x90
[   53.889407]  [<ffffffff8167effc>] do_general_protection+0xdc/0x160
[   53.889414]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.889420]  [<ffffffff8167e668>] general_protection+0x28/0x30
[   53.889427]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.889434]  [<ffffffff81663baa>] ? klist_release+0x3a/0x120
[   53.889441]  [<ffffffff81663c82>] ? klist_release+0x112/0x120
[   53.889447]  [<ffffffff81421460>] ? class_for_each_device+0xa0/0xa0
[   53.889454]  [<ffffffff81663cb8>] klist_dec_and_del+0x28/0x30
[   53.889461]  [<ffffffff81663eb5>] klist_next+0x45/0x140
[   53.889467]  [<ffffffff8131c410>] ? pci_match_next_bus+0x10/0x10
[   53.889473]  [<ffffffff81421108>] class_dev_iter_next+0x18/0x50
[   53.889480]  [<ffffffff81421358>] class_find_device+0x48/0xb0
[   53.889486]  [<ffffffff8131c8aa>] pci_get_next_root_bus+0x4a/0x80
[   53.889493]  [<ffffffff8132f6a5>] pcifront_free_roots+0x25/0x60
[   54.002497]  [<ffffffff8132f6f1>] free_pdev+0x11/0x80
[   54.002505]  [<ffffffff8132f77a>] pcifront_xenbus_remove+0x1a/0x20
[   54.002516]  [<ffffffff813abae8>] xenbus_dev_remove+0x38/0x70
[   54.002524]  [<ffffffff8141ffc1>] __device_release_driver+0x61/0xd0
[   54.002530]  [<ffffffff81420148>] device_release_driver+0x28/0x40
[   54.002537]  [<ffffffff8141f296>] bus_remove_device+0x106/0x140
[   54.002544]  [<ffffffff8141d120>] device_del+0x110/0x1c0
[   54.002551]  [<ffffffff8141d1e1>] device_unregister+0x11/0x20
[   54.002558]  [<ffffffff813ab946>] xenbus_dev_changed+0x96/0x1d0
[   54.002567]  [<ffffffff81048bd6>] ? xen_spin_lock+0xa6/0x110
[   54.002574]  [<ffffffff813ad2f6>] frontend_changed+0x16/0x20
[   54.002581]  [<ffffffff813a9c5b>] xenwatch_thread+0xcb/0x190
[   54.002588]  [<ffffffff810b49d0>] ? wake_up_bit+0x40/0x40
[   54.002595]  [<ffffffff813a9b90>] ? xs_watch+0x60/0x60
[   54.002601]  [<ffffffff810b42e6>] kthread+0xc6/0xd0
[   54.002607]  [<ffffffff8103a149>] ? xen_end_context_switch+0x19/0x20
[   54.002615]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   54.002624]  [<ffffffff8168623c>] ret_from_fork+0x7c/0xb0
[   54.002630]  [<ffffffff810b4220>] ? kthread_freezable_should_stop+0x80/0x80
[   54.002637] note: xenwatch[26] exited with preempt_count 1

# 
# 
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