[173902.490706] ------------[ cut here ]------------
[173902.490738] WARNING: CPU: 0 PID: 16655 at /build/linux-Pcn0xK/linux-4.4.0/fs/btrfs/extent-tree.c:6547 __btrfs_free_extent.isra.70+0x898/0xd30 [btrfs]()
[173902.490740] Modules linked in: isofs snd_seq_dummy bnep rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat xt_tcpudp iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key xfrm_algo bluetooth pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc rtl8xxxu arc4 rtl8192cu rtl_usb rtl8192c_common rtlwifi mac80211 cfg80211 asix usbnet hp_wmi sparse_keymap mii intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core coretemp snd_hwdep kvm_intel kvm snd_pcm irqbypass input_leds joydev snd_seq_midi snd_seq_midi_event snd_rawmidi
[173902.490788] snd_seq serio_raw snd_seq_device snd_timer ie31200_edac mei_me mei edac_core snd 8250_fintek tpm_infineon soundcore lpc_ich mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi sunrpc scsi_transport_iscsi parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq uas usb_storage hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 ghash_clmulni_intel aesni_intel i2c_algo_bit aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd drm_kms_helper ahci libahci syscopyarea sysfillrect psmouse sysimgblt e1000e fb_sys_fops drm ptp pps_core wmi fjes video
[173902.490832] CPU: 0 PID: 16655 Comm: btrfs-transacti Tainted: G W OE 4.4.0-97-generic #120-Ubuntu
[173902.490834] Hardware name: Hewlett-Packard HP Compaq Elite 8300 SFF/3397, BIOS K01 v02.90 07/16/2013
[173902.490836] 0000000000000286 72f9c0d27f939c53 ffff8804a45fbb50 ffffffff813fabe3
[173902.490839] 0000000000000000 ffffffffc0470498 ffff8804a45fbb88 ffffffff810812e2
[173902.490841] 0000000d0b1c0000 00000000fffffffe 0000000000000000 ffff8804c216e000
[173902.490844] Call Trace:
[173902.490850] [<ffffffff813fabe3>] dump_stack+0x63/0x90
[173902.490855] [<ffffffff810812e2>] warn_slowpath_common+0x82/0xc0
[173902.490858] [<ffffffff8108142a>] warn_slowpath_null+0x1a/0x20
[173902.490876] [<ffffffffc03cf498>] __btrfs_free_extent.isra.70+0x898/0xd30 [btrfs]
[173902.490893] [<ffffffffc03d34e0>] __btrfs_run_delayed_refs+0xad0/0x1220 [btrfs]
[173902.490910] [<ffffffffc03d6add>] btrfs_run_delayed_refs+0x7d/0x2a0 [btrfs]
[173902.490929] [<ffffffffc03e9b02>] ? btrfs_wait_pending_ordered+0x22/0x90 [btrfs]
[173902.490946] [<ffffffffc03ec132>] btrfs_commit_transaction+0x4d2/0xa90 [btrfs]
[173902.490962] [<ffffffffc03e7309>] transaction_kthread+0x229/0x240 [btrfs]
[173902.490978] [<ffffffffc03e70e0>] ? btrfs_cleanup_transaction+0x570/0x570 [btrfs]
[173902.490981] [<ffffffff810a0c75>] kthread+0xe5/0x100
[173902.490984] [<ffffffff810a0b90>] ? kthread_create_on_node+0x1e0/0x1e0
[173902.490988] [<ffffffff81843b8f>] ret_from_fork+0x3f/0x70
[173902.490991] [<ffffffff810a0b90>] ? kthread_create_on_node+0x1e0/0x1e0
[173902.490993] ---[ end trace 5abbf3227703f27e ]---
[173902.490996] BTRFS info (device sdb1): leaf 37797888 total ptrs 263 free space 1029
[173902.490998] item 0 key (56020582400 169 0) itemoff 16250 itemsize 33
[173902.491000] extent refs 1 gen 1359946 flags 2
[173902.491002] tree block backref root 2
[173902.491003] item 1 key (56020598784 169 0) itemoff 16217 itemsize 33
[173902.491005] extent refs 1 gen 1359946 flags 2
[173902.491006] tree block backref root 2
[173902.491008] item 2 key (56020615168 169 0) itemoff 16184 itemsize 33
[173902.491009] extent refs 1 gen 1359946 flags 2
[173902.491010] tree block backref root 2
[173902.491012] item 3 key (56020631552 169 0) itemoff 16151 itemsize 33
[173902.491013] extent refs 1 gen 1359946 flags 2
[173902.491014] tree block backref root 2
...
[173902.492032] item 262 key (56025153536 169 0) itemoff 7604 itemsize 33
[173902.492033] extent refs 1 gen 1359946 flags 2
[173902.492034] tree block backref root 5
[173902.492037] BTRFS error (device sdb1): unable to find ref byte nr 56020959232 parent 0 root 5 owner 2 offset 0
[173902.492039] ------------[ cut here ]------------
[173902.492055] WARNING: CPU: 0 PID: 16655 at /build/linux-Pcn0xK/linux-4.4.0/fs/btrfs/extent-tree.c:6553 __btrfs_free_extent.isra.70+0x8ff/0xd30 [btrfs]()
[173902.492057] BTRFS: Transaction aborted (error -2)
[173902.492058] Modules linked in: isofs snd_seq_dummy bnep rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat xt_tcpudp iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key xfrm_algo bluetooth pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc rtl8xxxu arc4 rtl8192cu rtl_usb rtl8192c_common rtlwifi mac80211 cfg80211 asix usbnet hp_wmi sparse_keymap mii intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core coretemp snd_hwdep kvm_intel kvm snd_pcm irqbypass input_leds joydev snd_seq_midi snd_seq_midi_event snd_rawmidi
[173902.492096] snd_seq serio_raw snd_seq_device snd_timer ie31200_edac mei_me mei edac_core snd 8250_fintek tpm_infineon soundcore lpc_ich mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi sunrpc scsi_transport_iscsi parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq uas usb_storage hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 ghash_clmulni_intel aesni_intel i2c_algo_bit aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd drm_kms_helper ahci libahci syscopyarea sysfillrect psmouse sysimgblt e1000e fb_sys_fops drm ptp pps_core wmi fjes video
[173902.492131] CPU: 0 PID: 16655 Comm: btrfs-transacti Tainted: G W OE 4.4.0-97-generic #120-Ubuntu
[173902.492133] Hardware name: Hewlett-Packard HP Compaq Elite 8300 SFF/3397, BIOS K01 v02.90 07/16/2013
[173902.492134] 0000000000000286 72f9c0d27f939c53 ffff8804a45fbaf8 ffffffff813fabe3
[173902.492137] ffff8804a45fbb40 ffffffffc0470498 ffff8804a45fbb30 ffffffff810812e2
[173902.492139] 0000000d0b1c0000 00000000fffffffe 0000000000000000 ffff8804c216e000
[173902.492142] Call Trace:
[173902.492146] [<ffffffff813fabe3>] dump_stack+0x63/0x90
[173902.492150] [<ffffffff810812e2>] warn_slowpath_common+0x82/0xc0
[173902.492152] [<ffffffff8108137c>] warn_slowpath_fmt+0x5c/0x80
[173902.492168] [<ffffffffc03cf4ff>] __btrfs_free_extent.isra.70+0x8ff/0xd30 [btrfs]
[173902.492184] [<ffffffffc03d34e0>] __btrfs_run_delayed_refs+0xad0/0x1220 [btrfs]
[173902.492201] [<ffffffffc03d6add>] btrfs_run_delayed_refs+0x7d/0x2a0 [btrfs]
[173902.492217] [<ffffffffc03e9b02>] ? btrfs_wait_pending_ordered+0x22/0x90 [btrfs]
[173902.492234] [<ffffffffc03ec132>] btrfs_commit_transaction+0x4d2/0xa90 [btrfs]
[173902.492249] [<ffffffffc03e7309>] transaction_kthread+0x229/0x240 [btrfs]
[173902.492264] [<ffffffffc03e70e0>] ? btrfs_cleanup_transaction+0x570/0x570 [btrfs]
[173902.492267] [<ffffffff810a0c75>] kthread+0xe5/0x100
[173902.492269] [<ffffffff810a0b90>] ? kthread_create_on_node+0x1e0/0x1e0
[173902.492273] [<ffffffff81843b8f>] ret_from_fork+0x3f/0x70
[173902.492275] [<ffffffff810a0b90>] ? kthread_create_on_node+0x1e0/0x1e0
[173902.492277] ---[ end trace 5abbf3227703f27f ]---
[173902.492280] BTRFS: error (device sdb1) in __btrfs_free_extent:6553: errno=-2 No such entry
[173902.492282] BTRFS info (device sdb1): forced readonly
[173902.492285] BTRFS: error (device sdb1) in btrfs_run_delayed_refs:2930: errno=-2 No such entry
[173902.492287] BTRFS warning (device sdb1): Skipping commit of aborted transaction.
[173902.492289] BTRFS: error (device sdb1) in cleanup_transaction:1746: errno=-2 No such entry
[175683.736273] BTRFS error (device sdb1): cleaner transaction attach returned -30