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Bug#709989: linux-image-3.2.0-0.bpo.4-amd64: General protection fault after I/O on ext3 in KVM



Package: src:linux
Version: 3.2.41-2+deb7u2~bpo60+1
Severity: important


We have experienced several GPF on ext3 with VMs running latest Debian 6.0.7
(kernel 3.2.41-2+deb7u2~bpo60+1 from Squeeze backports). VMs are running on
Debian 7.0 (kernel 3.2.41-2+deb7u2) hosts under QEMU/KVM 1.4.1 (1.4.0+dfsg-2exp).

Filesystem is mounted with options:
noatime,nodiratime,nosuid,data=writeback,barrier=0,errors=remount-ro
(but even just default options causes GPF).

Virtual block device is a raw partition on physical host, libvirt domain sample:
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source dev='/dev/md3'/>
      <target dev='vde' bus='virtio'/>
      <alias name='virtio-disk4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </disk>

We have experienced similar problem with Ext4, I'll submit new bug for this.

I haven't found way how to replicate this bug so far.

-- Package-specific info:
** Version:
Linux version 3.2.0-0.bpo.4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.4.5 (Debian 4.4.5-8) ) #1 SMP Debian 3.2.41-2+deb7u2~bpo60+1

** Command line:
BOOT_IMAGE=/vmlinuz-3.2.0-0.bpo.4-amd64 root=/dev/mapper/vg0-root ro elevator=noop console=tty0 console=ttyS0,115200 quiet console=tty0 console=ttyS0,115200

** Tainted: PDO (4225)
 * Proprietary module has been loaded.
 * Kernel has oopsed before.
 * Out-of-tree module has been loaded.

** Kernel log:
[    3.829818] mlx4_core 0000:00:09.0: irq 60 for MSI/MSI-X
[    3.829833] mlx4_core 0000:00:09.0: irq 61 for MSI/MSI-X
[    3.829847] mlx4_core 0000:00:09.0: irq 62 for MSI/MSI-X
[    3.829862] mlx4_core 0000:00:09.0: irq 63 for MSI/MSI-X
[    3.829877] mlx4_core 0000:00:09.0: irq 64 for MSI/MSI-X
[    3.829892] mlx4_core 0000:00:09.0: irq 65 for MSI/MSI-X
[    3.829907] mlx4_core 0000:00:09.0: irq 66 for MSI/MSI-X
[    3.829921] mlx4_core 0000:00:09.0: irq 67 for MSI/MSI-X
[    3.829936] mlx4_core 0000:00:09.0: irq 68 for MSI/MSI-X
[    3.829951] mlx4_core 0000:00:09.0: irq 69 for MSI/MSI-X
[    3.829967] mlx4_core 0000:00:09.0: irq 70 for MSI/MSI-X
[    3.829981] mlx4_core 0000:00:09.0: irq 71 for MSI/MSI-X
[    3.829996] mlx4_core 0000:00:09.0: irq 72 for MSI/MSI-X
[    3.830010] mlx4_core 0000:00:09.0: irq 73 for MSI/MSI-X
[    3.830025] mlx4_core 0000:00:09.0: irq 74 for MSI/MSI-X
[    5.538525] mlx4_en: Mellanox ConnectX HCA Ethernet driver v1.5.4.2 (October 2011)
[    5.546036] mlx4_ib: Mellanox ConnectX InfiniBand driver v1.0 (April 4, 2008)
[    5.690174] ib0: enabling connected mode will cause multicast packet drops
[    5.693241] ib1: enabling connected mode will cause multicast packet drops
[    5.772062] EXT3-fs: barriers not enabled
[    5.772675] kjournald starting.  Commit interval 5 seconds
[    5.773318] EXT3-fs (vde): using internal journal
[    5.773324] EXT3-fs (vde): mounted filesystem with writeback data mode
[    5.848245] ip_tables: (C) 2000-2006 Netfilter Core Team
[    5.917605] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[    6.360857] ADDRCONF(NETDEV_UP): ib0: link is not ready
[    6.361524] ib0: mtu > 2044 will cause multicast packet drops.
[    6.413987] RPC: Registered named UNIX socket transport module.
[    6.413990] RPC: Registered udp transport module.
[    6.413991] RPC: Registered tcp transport module.
[    6.413992] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    6.416551] FS-Cache: Loaded
[    6.419788] FS-Cache: Netfs 'nfs' registered for caching
[    6.422049] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[    8.416310] svc: failed to register lockdv1 RPC service (errno 97).
[   13.493046] ISO 9660 Extensions: Microsoft Joliet Level 3
[   13.496218] ISO 9660 Extensions: RRIP_1991A
[   13.557432] openafs: module license 'http://www.openafs.org/dl/license10.html' taints kernel.
[   13.557435] Disabling lock debugging due to kernel taint
[   13.616111] sshd (1672): /proc/1672/oom_adj is deprecated, please use /proc/1672/oom_score_adj instead.
[   13.616977] enabling dynamically allocated vcaches
[   13.616977] Starting AFS cache scan...
[   13.761591] ISO 9660 Extensions: Microsoft Joliet Level 3
[   13.768396] ISO 9660 Extensions: RRIP_1991A
[   13.961325] found 25 non-empty cache files (0%).
[   16.432068] eth0: no IPv6 routers present
[   28.632642] ADDRCONF(NETDEV_CHANGE): ib0: link becomes ready
[   39.248010] ib0: no IPv6 routers present
[   70.264053] afs: Lost contact with file server 10.1.5.250 in cell ics.muni.cz (multi-homed address; other same-host interfaces maybe up)
[   70.264057] afs: Lost contact with file server 10.1.5.250 in cell ics.muni.cz (multi-homed address; other same-host interfaces maybe up)
[   70.264059] RXAFS_GetCapabilities failed with code -1
[23844.063383] general protection fault: 0000 [#1] SMP 
[23844.064006] CPU 0 
[23844.064006] Modules linked in: openafs(P) nls_utf8 isofs des_generic cbc rpcsec_gss_krb5 nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_comment xt_multiport iptable_filter ip_tables x_tables ext3 jbd ib_ipoib mlx4_ib rdma_ucm rdma_cm ib_cm iw_cm ib_addr ib_sa ib_uverbs mlx4_en mlx4_core ib_umad ib_mad ib_core loop crc32c_intel ghash_clmulni_intel snd_pcm snd_timer snd aesni_intel cryptd soundcore i2c_piix4 tpm_tis snd_page_alloc tpm aes_x86_64 tpm_bios i2c_core i6300esb virtio_balloon aes_generic psmouse pcspkr processor evdev serio_raw thermal_sys button ext4 mbcache jbd2 crc16 dm_mod microcode ata_generic virtio_net virtio_blk floppy uhci_hcd ata_piix ehci_hcd virtio_pci virtio_ring libata virtio usbcore scsi_mod usb_common [last unloaded: scsi_wait_scan]
[23844.064006] 
[23844.064006] Pid: 16748, comm: flush-254:64 Tainted: P           O 3.2.0-0.bpo.4-amd64 #1 Debian 3.2.41-2+deb7u2~bpo60+1 Bochs Bochs
[23844.064006] RIP: 0010:[<ffffffffa03129be>]  [<ffffffffa03129be>] walk_page_buffers+0x22/0x97 [ext3]
[23844.064006] RSP: 0018:ffff881e28ab1a00  EFLAGS: 00010246
[23844.064006] RAX: 0000000000000000 RBX: ffff8800bdf7f130 RCX: fff064e2000499fe
[23844.064006] RDX: 0000000000000000 RSI: fff064e2000499fe RDI: 0000000000000000
[23844.064006] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffa0312a41
[23844.064006] R10: ffffffffffffffd9 R11: 0000000000000050 R12: 0000000000001000
[23844.064006] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[23844.064006] FS:  0000000000000000(0000) GS:ffff880f42c00000(0000) knlGS:0000000000000000
[23844.064006] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[23844.064006] CR2: 00007f6b5803a028 CR3: 000000115bb28000 CR4: 00000000000406f0
[23844.064006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[23844.064006] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[23844.064006] Process flush-254:64 (pid: 16748, threadinfo ffff881e28ab0000, task ffff881e27f940c0)
[23844.064006] Stack:
[23844.064006]  ffffea0040b09b00 ffffffff00000000 ffffea0040b09b00 fff064e2000499fe
[23844.064006]  0000000000000000 ffffea0040b09b38 ffff881e2877d120 ffff881e28ab1c90
[23844.064006]  0000000000000000 ffff880f057491f0 ffffea0040b09b38 ffffffffa0314286
[23844.064006] Call Trace:
[23844.064006]  [<ffffffffa0314286>] ? ext3_writeback_writepage+0xd3/0x157 [ext3]
[23844.064006]  [<ffffffff810c478e>] ? __writepage+0xa/0x21
[23844.064006]  [<ffffffff810c5881>] ? write_cache_pages+0x226/0x31e
[23844.064006]  [<ffffffff810c4784>] ? set_page_dirty+0x61/0x61
[23844.064006]  [<ffffffff810c59b7>] ? generic_writepages+0x3e/0x55
[23844.064006]  [<ffffffff811254fc>] ? writeback_single_inode+0x178/0x35e
[23844.064006]  [<ffffffff811259ae>] ? writeback_sb_inodes+0x169/0x1ff
[23844.064006]  [<ffffffff81125ab1>] ? __writeback_inodes_wb+0x6d/0xab
[23844.064006]  [<ffffffff81125cd7>] ? wb_writeback+0x128/0x222
[23844.064006]  [<ffffffff8136761c>] ? __schedule+0x5a0/0x5cd
[23844.064006]  [<ffffffff81125f4a>] ? wb_do_writeback+0x179/0x1de
[23844.064006]  [<ffffffff81055ccb>] ? del_timer_sync+0x34/0x3e
[23844.064006]  [<ffffffff81126072>] ? bdi_writeback_thread+0xc3/0x1fe
[23844.064006]  [<ffffffff81125faf>] ? wb_do_writeback+0x1de/0x1de
[23844.064006]  [<ffffffff81125faf>] ? wb_do_writeback+0x1de/0x1de
[23844.064006]  [<ffffffff8106371d>] ? kthread+0x7a/0x82
[23844.064006]  [<ffffffff81370274>] ? kernel_thread_helper+0x4/0x10
[23844.064006]  [<ffffffff810636a3>] ? kthread_worker_fn+0x147/0x147
[23844.064006]  [<ffffffff81370270>] ? gs_change+0x13/0x13
[23844.064006] Code: 5e 41 5f c3 48 89 dd eb 93 41 57 31 c0 41 56 41 55 41 54 41 89 cc 55 48 89 fd 53 48 89 f3 48 83 ec 28 4c 8b 6e 20 45 89 ee eb 5b <48> 8b 4e 08 44 39 e0 46 8d 3c 30 48 89 4c 24 18 73 05 41 39 d5 
[23844.064006] RIP  [<ffffffffa03129be>] walk_page_buffers+0x22/0x97 [ext3]
[23844.064006]  RSP <ffff881e28ab1a00>
[23844.168189] ---[ end trace 4df8d3d3464df30e ]---
[60994.540069] afs: Lost contact with file server 10.2.9.8 in cell ics.muni.cz (multi-homed address; other same-host interfaces maybe up)
[60994.542733] afs: Lost contact with file server 10.2.9.8 in cell ics.muni.cz (multi-homed address; other same-host interfaces maybe up)

** Model information
sys_vendor: Bochs
product_name: Bochs
product_version: 
chassis_vendor: Bochs
chassis_version: 
bios_vendor: Bochs
bios_version: Bochs

** Loaded modules:
openafs(P)
nls_utf8
isofs
des_generic
cbc
rpcsec_gss_krb5
nfsd
nfs
lockd
fscache
auth_rpcgss
nfs_acl
sunrpc
ipt_REJECT
nf_conntrack_ipv4
nf_defrag_ipv4
xt_state
nf_conntrack
xt_comment
xt_multiport
iptable_filter
ip_tables
x_tables
ext3
jbd
ib_ipoib
mlx4_ib
rdma_ucm
rdma_cm
ib_cm
iw_cm
ib_addr
ib_sa
ib_uverbs
mlx4_en
mlx4_core
ib_umad
ib_mad
ib_core
loop
crc32c_intel
ghash_clmulni_intel
snd_pcm
snd_timer
snd
aesni_intel
cryptd
soundcore
i2c_piix4
tpm_tis
snd_page_alloc
tpm
aes_x86_64
tpm_bios
i2c_core
i6300esb
virtio_balloon
aes_generic
psmouse
pcspkr
processor
evdev
serio_raw
thermal_sys
button
ext4
mbcache
jbd2
crc16
dm_mod
microcode
ata_generic
virtio_net
virtio_blk
floppy
uhci_hcd
ata_piix
ehci_hcd
virtio_pci
virtio_ring
libata
virtio
usbcore
scsi_mod
usb_common

** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma] [8086:1237] (rev 02)
	Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]
	Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] [8086:7010] (prog-if 80 [Master])
	Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
	Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
	Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
	Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
	Region 4: I/O ports at c1a0 [size=16]
	Kernel driver in use: ata_piix

00:01.2 USB Controller [0c03]: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI])
	Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin D routed to IRQ 11
	Region 4: I/O ports at c140 [size=32]
	Kernel driver in use: uhci_hcd

00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 03)
	Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 9
	Kernel driver in use: piix4_smbus

00:03.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device [1af4:1000]
	Subsystem: Red Hat, Inc Device [1af4:0001]
	Physical Slot: 3
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 10
	Region 0: I/O ports at c160 [size=32]
	Region 1: Memory at feb10000 (32-bit, non-prefetchable) [size=4K]
	Expansion ROM at feb00000 [disabled] [size=64K]
	Capabilities: [40] MSI-X: Enable+ Count=3 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001]
	Subsystem: Red Hat, Inc Device [1af4:0002]
	Physical Slot: 4
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: I/O ports at c000 [size=64]
	Region 1: Memory at feb11000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] MSI-X: Enable+ Count=2 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:05.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001]
	Subsystem: Red Hat, Inc Device [1af4:0002]
	Physical Slot: 5
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 10
	Region 0: I/O ports at c040 [size=64]
	Region 1: Memory at feb12000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] MSI-X: Enable+ Count=2 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:06.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001]
	Subsystem: Red Hat, Inc Device [1af4:0002]
	Physical Slot: 6
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: I/O ports at c080 [size=64]
	Region 1: Memory at feb13000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] MSI-X: Enable+ Count=2 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:07.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001]
	Subsystem: Red Hat, Inc Device [1af4:0002]
	Physical Slot: 7
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 10
	Region 0: I/O ports at c0c0 [size=64]
	Region 1: Memory at feb14000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] MSI-X: Enable+ Count=2 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:08.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001]
	Subsystem: Red Hat, Inc Device [1af4:0002]
	Physical Slot: 8
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: I/O ports at c100 [size=64]
	Region 1: Memory at feb15000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] MSI-X: Enable+ Count=2 Masked-
		Vector table: BAR=1 offset=00000000
		PBA: BAR=1 offset=00000800
	Kernel driver in use: virtio-pci

00:09.0 Network controller [0280]: Mellanox Technologies MT27500 Family [ConnectX-3] [15b3:1003]
	Subsystem: Hewlett-Packard Company Device [103c:18cd]
	Physical Slot: 9
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at fea00000 (64-bit, non-prefetchable) [size=1M]
	Region 2: Memory at fe000000 (64-bit, prefetchable) [size=8M]
	Capabilities: [48] Vital Product Data
		Product Name: HP ConnectX-3 ALOM QSFP
		Read-only fields:
			[PN] Part number: 649283-B21           
			[EC] Engineering changes: C4
			[SN] Serial number: IL2230046M
			[V0] Vendor specific: HP IB QDR/EN 10Gb 2P 544FLR-QSFP Adpr
			[RV] Reserved: checksum good, 0 byte(s) reserved
		Read/write fields:
			[V1] Vendor specific: N/A   
			[YA] Asset tag: N/A                    
			[RW] Read-write area: 100 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 253 byte(s) free
			[RW] Read-write area: 252 byte(s) free
		End
	Capabilities: [60] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 256 bytes, PhantFunc 0, Latency L0s <64ns, L1 unlimited
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
		DevCtl:	Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
			MaxPayload 256 bytes, MaxReadReq 4096 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #8, Speed unknown, Width x8, ASPM L0s, Latency L0 unlimited, L1 unlimited
			ClockPM- Surprise- LLActRep- BwNot-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed unknown, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [9c] MSI-X: Enable+ Count=128 Masked-
		Vector table: BAR=0 offset=0007c000
		PBA: BAR=0 offset=0007d000
	Kernel driver in use: mlx4_core

00:0a.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon [1af4:1002]
	Subsystem: Red Hat, Inc Device [1af4:0005]
	Physical Slot: 10
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: I/O ports at c180 [size=32]
	Kernel driver in use: virtio-pci

00:0b.0 System peripheral [0880]: Intel Corporation 6300ESB Watchdog Timer [8086:25ab]
	Subsystem: Red Hat, Inc Device [1af4:1100]
	Physical Slot: 11
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: Memory at feb16000 (32-bit, non-prefetchable) [size=16]
	Kernel driver in use: i6300ESB timer


** USB devices:
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


-- System Information:
Debian Release: 6.0.7
  APT prefers oldstable-updates
  APT policy: (500, 'oldstable-updates'), (500, 'oldstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-0.bpo.4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages linux-image-3.2.0-0.bpo.4-amd64 depends on:
ii  debconf [debconf-2.0]       1.5.36.1     Debian configuration management sy
ii  initramfs-tools [linux-init 0.99~bpo60+1 tools for generating an initramfs
ii  linux-base                  3.4~bpo60+1  Linux image base package
ii  module-init-tools           3.12-2       tools for managing Linux kernel mo

Versions of packages linux-image-3.2.0-0.bpo.4-amd64 recommends:
pn  firmware-linux-free           <none>     (no description available)

Versions of packages linux-image-3.2.0-0.bpo.4-amd64 suggests:
pn  debian-kernel- <none>                    (no description available)
ii  grub-pc        1.98+20100804-14+squeeze1 GRand Unified Bootloader, version 
pn  linux-doc-3.2  <none>                    (no description available)

Versions of packages linux-image-3.2.0-0.bpo.4-amd64 is related to:
pn  firmware-atheros              <none>     (no description available)
pn  firmware-bnx2                 <none>     (no description available)
pn  firmware-bnx2x                <none>     (no description available)
pn  firmware-brcm80211            <none>     (no description available)
pn  firmware-intelwimax           <none>     (no description available)
pn  firmware-ipw2x00              <none>     (no description available)
pn  firmware-ivtv                 <none>     (no description available)
pn  firmware-iwlwifi              <none>     (no description available)
pn  firmware-libertas             <none>     (no description available)
pn  firmware-linux                <none>     (no description available)
pn  firmware-linux-nonfree        <none>     (no description available)
pn  firmware-myricom              <none>     (no description available)
pn  firmware-netxen               <none>     (no description available)
pn  firmware-qlogic               <none>     (no description available)
pn  firmware-ralink               <none>     (no description available)
pn  firmware-realtek              <none>     (no description available)
pn  xen-hypervisor                <none>     (no description available)

-- debconf information:
  linux-image-3.2.0-0.bpo.4-amd64/postinst/missing-firmware-3.2.0-0.bpo.4-amd64:
  linux-image-3.2.0-0.bpo.4-amd64/prerm/removing-running-kernel-3.2.0-0.bpo.4-amd64: true
  linux-image-3.2.0-0.bpo.4-amd64/postinst/depmod-error-initrd-3.2.0-0.bpo.4-amd64: false
  linux-image-3.2.0-0.bpo.4-amd64/postinst/ignoring-ramdisk:


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