[    5.740139] intel8x0_measure_ac97_clock: measured 58945 usecs (11232 samples)
[    5.740144] intel8x0: measured clock 190550 rejected
[    5.740148] intel8x0: clocking to 48000
[    6.158613] ata3.00: configured for UDMA/133
[    6.158618] ata3: EH complete
[    7.842880] ata3.00: configured for UDMA/133
[    7.842886] ata3: EH complete
[   15.821705] eth0: no IPv6 routers present
[  139.063513] hrtimer: interrupt took 15932826 ns
[  901.733492] btrfs: relocating block group 3615227904 flags 36
[  905.460349] btrfs: relocating block group 2848194560 flags 1
[  917.660805] btrfs csum failed ino 258 off 133169152 csum 2190834782 private 544190867
[  917.666342] btrfs csum failed ino 258 off 133660672 csum 3557498072 private 1036739361
[  918.413426] btrfs csum failed ino 258 off 133660672 csum 3557498072 private 1036739361
[  918.413426] btrfs csum failed ino 258 off 133169152 csum 2190834782 private 544190867
[  918.520355] btrfs csum failed ino 258 off 133169152 csum 2190834782 private 544190867
[  918.582978] btrfs csum failed ino 258 off 133169152 csum 2190834782 private 544190867
[  920.058735] ------------[ cut here ]------------
[  920.058742] kernel BUG at /build/buildd/linux-2.6.35/fs/btrfs/volumes.c:1980!
[  920.058745] invalid opcode: 0000 [#1] SMP 
[  920.058748] last sysfs file: /sys/devices/pci0000:00/0000:00:06.0/usb1/1-1/1-1:1.0/uevent
[  920.058750] CPU 0 
[  920.058751] Modules linked in: binfmt_misc snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev parport_pc snd psmouse joydev serio_raw lp soundcore i2c_piix4 snd_page_alloc parport usbhid hid btrfs zlib_deflate ahci crc32c libahci libcrc32c e1000
[  920.058767] 
[  920.058770] Pid: 3132, comm: btrfs Not tainted 2.6.35-14-generic #19-Ubuntu /VirtualBox
[  920.058772] RIP: 0010:[<ffffffffa009f25f>]  [<ffffffffa009f25f>] btrfs_balance+0x24f/0x260 [btrfs]
[  920.058790] RSP: 0018:ffff88000cba1dc8  EFLAGS: 00010282
[  920.058792] RAX: 00000000fffffffb RBX: ffff8800173aa090 RCX: ffffea0000077aa8
[  920.058794] RDX: 0000000000000014 RSI: ffff880001d22970 RDI: 0000000000000282
[  920.058795] RBP: ffff88000cba1e48 R08: ffffea0000077000 R09: 0000000000000004
[  920.058797] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88001816a000
[  920.058799] R13: 0000000000000000 R14: 00000000a9c40000 R15: ffff88000cba1df8
[  920.058886] FS:  00007fbfba080740(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000
[  920.058888] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  920.058890] CR2: 00007f0148608160 CR3: 000000000cbab000 CR4: 00000000000006f0
[  920.058894] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  920.058895] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  920.058898] Process btrfs (pid: 3132, threadinfo ffff88000cba0000, task ffff88001e40adc0)
[  920.058899] Stack:
[  920.058901]  ffff88001816a800 0000000000000100 0000000000000100 000000a9c40000e4
[  920.058904] <0> ffff880001d23c00 ffff88001f82f800 0000000000000100 000000d77bffffe4
[  920.058906] <0> ffff88000cba1e00 ffffffff81128185 ffff88000ca03030 ffff880010f73300
[  920.058909] Call Trace:
[  920.058916]  [<ffffffff81128185>] ? page_add_new_anon_rmap+0x95/0xa0
[  920.058926]  [<ffffffffa00a74b0>] btrfs_ioctl+0x2c0/0x4c0 [btrfs]
[  920.058930]  [<ffffffff8116163d>] vfs_ioctl+0x3d/0xd0
[  920.058932]  [<ffffffff81161f11>] do_vfs_ioctl+0x81/0x340
[  920.058937]  [<ffffffff8158c9ae>] ? do_page_fault+0x15e/0x350
[  920.058939]  [<ffffffff81162251>] sys_ioctl+0x81/0xa0
[  920.058943]  [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[  920.058944] Code: fb ff 48 8b 45 80 48 8b b8 28 01 00 00 48 81 c7 20 1c 00 00 e8 d3 81 4e e1 e9 00 fe ff ff 45 31 ed eb d7 0f 0b eb fe 85 c0 74 a5 <0f> 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 90 55 48 89 e5 
[  920.058964] RIP  [<ffffffffa009f25f>] btrfs_balance+0x24f/0x260 [btrfs]
[  920.058973]  RSP <ffff88000cba1dc8>
[  920.058975] ---[ end trace 42d9b3699d38b73a ]---
[ 1276.318073] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.318120] type=1400 audit(1281130682.950:15): apparmor="STATUS" operation="profile_replace" name="/usr/share/gdm/guest-session/Xsession" pid=4667 comm="apparmor_parser"
[ 1276.331706] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.331761] type=1400 audit(1281130682.970:16): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient3" pid=4668 comm="apparmor_parser"
[ 1276.332134] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.332159] type=1400 audit(1281130682.970:17): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=4668 comm="apparmor_parser"
[ 1276.332367] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.332391] type=1400 audit(1281130682.970:18): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=4668 comm="apparmor_parser"
[ 1276.365460] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.365724] type=1400 audit(1281130683.000:19): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince" pid=4670 comm="apparmor_parser"
[ 1276.369548] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.369719] type=1400 audit(1281130683.000:20): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-previewer" pid=4670 comm="apparmor_parser"
[ 1276.373087] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.373264] type=1400 audit(1281130683.010:21): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-thumbnailer" pid=4670 comm="apparmor_parser"
[ 1276.380485] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.380523] type=1400 audit(1281130683.020:22): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=4672 comm="apparmor_parser"
[ 1276.380772] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.380805] type=1400 audit(1281130683.020:23): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=4672 comm="apparmor_parser"
[ 1276.383648] AppArmor DFA next/check upper bounds error fixed, upgrade user space tools 
[ 1276.383691] type=1400 audit(1281130683.020:24): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/tcpdump" pid=4673 comm="apparmor_parser"
[ 1282.169530] audit_printk_skb: 12 callbacks suppressed
[ 1282.176216] type=1400 audit(1281130688.800:29): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince" pid=4711 comm="apparmor_parser"
[ 1282.177655] type=1400 audit(1281130688.810:30): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-previewer" pid=4711 comm="apparmor_parser"
[ 1282.178498] type=1400 audit(1281130688.810:31): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-thumbnailer" pid=4711 comm="apparmor_parser"
[ 1282.609055] type=1400 audit(1281130689.240:32): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=4713 comm="apparmor_parser"
[ 1282.609308] type=1400 audit(1281130689.240:33): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=4713 comm="apparmor_parser"
[ 1282.659721] type=1400 audit(1281130689.290:34): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/tcpdump" pid=4714 comm="apparmor_parser"
[ 1326.081756] type=1400 audit(1281130732.720:35): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/tcpdump" pid=4810 comm="apparmor_parser"
[ 1410.215362] type=1400 audit(1281130816.850:36): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=4956 comm="apparmor_parser"
[ 1410.215865] type=1400 audit(1281130816.850:37): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=4956 comm="apparmor_parser"
[ 1453.803943] type=1400 audit(1281130860.440:38): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince" pid=5094 comm="apparmor_parser"
[ 1453.804909] type=1400 audit(1281130860.440:39): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-previewer" pid=5094 comm="apparmor_parser"
[ 1453.805698] type=1400 audit(1281130860.440:40): apparmor="STATUS" operation="profile_replace" name="/usr/bin/evince-thumbnailer" pid=5094 comm="apparmor_parser"