kernel warning in btrfs

[Neal Becker]

I'm not reporting, cause kernel was tainted by virtualbox, but should I be 
worried?

Feb 22 09:21:58 nbecker1 kernel: [76101.244542] ------------[ cut here 
]------------
Feb 22 09:21:58 nbecker1 kernel: [76101.244582] WARNING: at 
fs/btrfs/inode.c:2165 btrfs_orphan_commit_root+0xf4/0x100 [btrfs]()
Feb 22 09:21:58 nbecker1 kernel: [76101.244584] Hardware name: HP Pavilion 
dv9500 Notebook PC    
Feb 22 09:21:58 nbecker1 kernel: [76101.244586] Modules linked in: lp parport 
vfat fat usb_storage vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) fuse 
ip6table_filter ip6_tables ebtable_nat ebtables rfcomm bnep be2iscsi 
iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi ib_iser 
nf_conntrack_ipv4 nf_defrag_ipv4 rdma_cm xt_conntrack ib_addr nf_conntrack iw_cm 
ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi 
btusb bluetooth snd_hda_codec_si3054 snd_hda_codec_realtek iTCO_wdt 
iTCO_vendor_support hp_wmi sparse_keymap coretemp snd_hda_intel snd_hda_codec 
snd_hwdep snd_seq snd_seq_device snd_pcm arc4 microcode iwl4965 i2c_i801 
iwlegacy mac80211 r592 snd_page_alloc lpc_ich memstick r8169 mfd_core snd_timer 
cfg80211 rfkill snd mii soundcore vhost_net tun macvtap macvlan kvm_intel kvm 
uinput btrfs libcrc32c zlib_deflate sdhci_pci sdhci nouveau mmc_core mxm_wmi 
i2c_algo_bit drm_kms_helper firewire_ohci ttm drm firewire_core crc_itu_t 
i2c_core wmi video
Feb 22 09:21:58 nbecker1 kernel: [76101.244644] Pid: 246, comm: btrfs-transacti 
Tainted: GF        C O 3.7.9-201.fc18.x86_64 #1
Feb 22 09:21:58 nbecker1 kernel: [76101.244646] Call Trace:
Feb 22 09:21:58 nbecker1 kernel: [76101.244653]  [<ffffffff8105e6df>] 
warn_slowpath_common+0x7f/0xc0
Feb 22 09:21:58 nbecker1 kernel: [76101.244656]  [<ffffffff8105e73a>] 
warn_slowpath_null+0x1a/0x20
Feb 22 09:21:58 nbecker1 kernel: [76101.244671]  [<ffffffffa0226074>] 
btrfs_orphan_commit_root+0xf4/0x100 [btrfs]
Feb 22 09:21:58 nbecker1 kernel: [76101.244684]  [<ffffffffa021f388>] 
commit_fs_roots.isra.24+0xb8/0x190 [btrfs]
Feb 22 09:21:58 nbecker1 kernel: [76101.244699]  [<ffffffffa0220238>] 
btrfs_commit_transaction+0x598/0xae0 [btrfs]
Feb 22 09:21:58 nbecker1 kernel: [76101.244702]  [<ffffffff81082740>] ? 
wake_up_bit+0x40/0x40
Feb 22 09:21:58 nbecker1 kernel: [76101.244716]  [<ffffffffa0218ec5>] 
transaction_kthread+0x1a5/0x220 [btrfs]
Feb 22 09:21:58 nbecker1 kernel: [76101.244729]  [<ffffffffa0218d20>] ? 
btree_readpage_end_io_hook+0x290/0x290 [btrfs]
Feb 22 09:21:58 nbecker1 kernel: [76101.244731]  [<ffffffff81081e30>] 
kthread+0xc0/0xd0
Feb 22 09:21:58 nbecker1 kernel: [76101.244735]  [<ffffffff81010000>] ? 
ftrace_raw_event_xen_mmu_flush_tlb_others+0x50/0xe0
Feb 22 09:21:58 nbecker1 kernel: [76101.244738]  [<ffffffff81081d70>] ? 
kthread_create_on_node+0x120/0x120
Feb 22 09:21:58 nbecker1 kernel: [76101.244742]  [<ffffffff8163f92c>] 
ret_from_fork+0x7c/0xb0
Feb 22 09:21:58 nbecker1 kernel: [76101.244745]  [<ffffffff81081d70>] ? 
kthread_create_on_node+0x120/0x120
Feb 22 09:21:58 nbecker1 kernel: [76101.244747] ---[ end trace 93a78f651a830bbb 
]---