dmesg output of blocked threads

dmesg (text/plain), 30.87 KB, created by robert on 2014-06-29 19:41:32 UTC

[   18.690275] usbcore: registered new interface driver cdc_ncm
[   18.690348] cdc_acm 2-1.4:1.9: ttyACM2: USB ACM device
[   18.692823] usbcore: registered new interface driver cdc_acm
[   18.692825] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[   18.701781] systemd-udevd[1673]: renamed network interface wwan0 to wwp0s29u1u4i6
[   19.276299] systemd-journald[1083]: Received request to flush runtime journal from PID 1
[   19.543257] ip_tables: (C) 2000-2006 Netfilter Core Team
[   19.556244] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[   19.564880] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   19.595934] Ebtables v2.0 registered
[   19.601584] Bridge firewalling registered
[   20.026409] e1000e 0000:00:19.0: irq 47 for MSI/MSI-X
[   20.127050] e1000e 0000:00:19.0: irq 47 for MSI/MSI-X
[   20.127233] IPv6: ADDRCONF(NETDEV_UP): enp0s25: link is not ready
[   20.129645] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[   20.129859] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[   20.392662] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[   20.392876] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[   20.471738] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[   23.579906] wlp3s0: authenticate with 00:1d:73:b1:ff:28
[   23.585175] wlp3s0: send auth to 00:1d:73:b1:ff:28 (try 1/3)
[   23.670788] wlp3s0: authenticated
[   23.671905] wlp3s0: associate with 00:1d:73:b1:ff:28 (try 1/3)
[   23.675121] wlp3s0: RX AssocResp from 00:1d:73:b1:ff:28 (capab=0x411 status=0 aid=1)
[   23.678480] wlp3s0: associated
[   23.678514] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready
[   28.129171] scsi 6:0:0:0: Direct-Access     TOSHIBA  External USB 3.0 5438 PQ: 0 ANSI: 6
[   28.132928] sd 6:0:0:0: [sdc] 1953525164 512-byte logical blocks: (1.00 TB/931 GiB)
[   28.133300] sd 6:0:0:0: [sdc] Write Protect is off
[   28.133302] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[   28.133655] sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   28.172584]  sdc: sdc1
[   28.180581] sd 6:0:0:0: [sdc] Attached SCSI disk
[   28.434976] md: bind<sdc1>
[   28.436952] md: raid1 personality registered for level 1
[   28.437205] md/raid1:md0: active with 2 out of 2 mirrors
[   28.437352] created bitmap (7 pages) for device md0
[   28.437714] md0: bitmap initialized from disk: read 1 pages, set 0 of 12561 bits
[   28.745100] md0: detected capacity change from 0 to 842920886272
[   28.782254]  md0: p1
[   51.655547] capability: warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
[   72.279831] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
[   82.482705] SysRq : Show Blocked State
[   82.482708]   task                        PC stack   pid father
[  249.565880] SysRq : Show Blocked State
[  249.565883]   task                        PC stack   pid father
[  249.565889] kworker/u8:2    D ffff8804096e9190     0   108      2 0x00000000
[  249.565897] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-1)
[  249.565898]  ffff8804096ef9c0 0000000000000046 000000000000a000 ffff8804096e9190
[  249.565900]  ffff8804096effd8 ffff8804096f6150 ffff880409024800 0000000000000040
[  249.565901]  00000002d1bdffff ffff8804096ef9a0 ffffffff81352892 0000000000000000
[  249.565903] Call Trace:
[  249.565907]  [<ffffffff81352892>] ? run_delalloc_range+0x182/0x350
[  249.565911]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  249.565913]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  249.565916]  [<ffffffff81754b29>] schedule+0x29/0x70
[  249.565917]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  249.565918]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  249.565920]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  249.565922]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  249.565924]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  249.565926]  [<ffffffff813656ae>] ? flush_write_bio+0xe/0x10
[  249.565928]  [<ffffffff813698b8>] extent_write_cache_pages.isra.32.constprop.49+0x3c8/0x3e0
[  249.565931]  [<ffffffff8136a8bd>] extent_writepages+0x4d/0x70
[  249.565932]  [<ffffffff8134ed30>] ? __btrfs_submit_bio_start_direct_io+0x30/0x30
[  249.565933]  [<ffffffff8134dae8>] btrfs_writepages+0x28/0x30
[  249.565935]  [<ffffffff8113c7d1>] do_writepages+0x21/0x50
[  249.565937]  [<ffffffff8119d4b0>] __writeback_single_inode+0x40/0x2a0
[  249.565938]  [<ffffffff810ad87c>] ? load_balance+0x16c/0x8c0
[  249.565939]  [<ffffffff8119e32a>] writeback_sb_inodes+0x26a/0x450
[  249.565941]  [<ffffffff8119e5af>] __writeback_inodes_wb+0x9f/0xd0
[  249.565943]  [<ffffffff8119e80b>] wb_writeback+0x22b/0x330
[  249.565944]  [<ffffffff8119f234>] bdi_writeback_workfn+0x314/0x480
[  249.565947]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  249.565949]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  249.565950]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  249.565952]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  249.565954]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  249.565957]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  249.565958]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  249.565964] kworker/u8:10   D ffff88041e292a00     0  2198      2 0x00000000
[  249.565968] Workqueue: btrfs-delalloc normal_work_helper
[  249.565968]  ffff88040a9ff850 0000000000000046 000000000000a000 ffff88040d2b3110
[  249.565970]  ffff88040a9fffd8 ffff88041c23aa10 ffff8804094e3628 ffff88040a9ff7e8
[  249.565971]  ffffffff815c08c8 0000000000000001 ffff88040d58a800 ffff8800da3d2d08
[  249.565972] Call Trace:
[  249.565975]  [<ffffffff815c08c8>] ? scsi_request_fn+0x48/0x480
[  249.565977]  [<ffffffff81758736>] ? _raw_spin_unlock+0x16/0x40
[  249.565980]  [<ffffffff81413d0b>] ? queue_unplugged+0x3b/0xd0
[  249.565981]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  249.565982]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  249.565984]  [<ffffffff81754b29>] schedule+0x29/0x70
[  249.565985]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  249.565986]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  249.565988]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  249.565990]  [<ffffffff814169b4>] ? blk_finish_plug+0x14/0x40
[  249.565991]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  249.565992]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  249.565994]  [<ffffffff8113145c>] find_lock_entry+0x4c/0x70
[  249.565996]  [<ffffffff81132184>] find_or_create_page+0x34/0xa0
[  249.565998]  [<ffffffff8138a6ce>] io_ctl_prepare_pages+0x4e/0x160
[  249.566000]  [<ffffffff8138d1ea>] __load_free_space_cache+0x1da/0x690
[  249.566001]  [<ffffffff8138d79c>] load_free_space_cache+0xfc/0x1c0
[  249.566004]  [<ffffffff8132fc62>] cache_block_group+0x192/0x390
[  249.566006]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  249.566007]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  249.566009]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  249.566010]  [<ffffffff81351923>] cow_file_range+0x123/0x400
[  249.566012]  [<ffffffff81352c22>] submit_compressed_extents+0x1c2/0x470
[  249.566014]  [<ffffffff81352ed0>] ? submit_compressed_extents+0x470/0x470
[  249.566015]  [<ffffffff81352f56>] async_cow_submit+0x86/0x90
[  249.566016]  [<ffffffff81378a35>] normal_work_helper+0x205/0x350
[  249.566018]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  249.566019]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  249.566020]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  249.566022]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  249.566024]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  249.566025]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  249.566027]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  249.566031] AioMgr0-N       D ffff88041e392a00     0  3146   3083 0x00000000
[  249.566033]  ffff8803efcb3878 0000000000000082 000000000000a000 ffff88040d34a0d0
[  249.566034]  ffff8803efcb3fd8 ffff88041c271290 ffff8803efcb3810 0000000000011200
[  249.566035]  ffff88040d34a0d0 ffff88040d3851c0 ffff8803efcb37d8 ffffffff81133f15
[  249.566037] Call Trace:
[  249.566039]  [<ffffffff81133f15>] ? mempool_alloc_slab+0x15/0x20
[  249.566040]  [<ffffffff8138b84e>] ? tree_search_offset.isra.22+0x12e/0x1f0
[  249.566042]  [<ffffffff817586ad>] ? _raw_spin_lock_irqsave+0x1d/0x50
[  249.566043]  [<ffffffff81754b29>] schedule+0x29/0x70
[  249.566045]  [<ffffffff8132fbf1>] cache_block_group+0x121/0x390
[  249.566046]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  249.566047]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  249.566049]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  249.566051]  [<ffffffff81359ac2>] btrfs_get_blocks_direct+0x4b2/0x610
[  249.566054]  [<ffffffff811ae9c6>] __blockdev_direct_IO+0xae6/0x3880
[  249.566056]  [<ffffffff8134e092>] btrfs_direct_IO+0x1d2/0x3c0
[  249.566057]  [<ffffffff81359610>] ? can_nocow_extent+0x460/0x460
[  249.566059]  [<ffffffff8134fd30>] ? insert_reserved_file_extent.constprop.56+0x2f0/0x2f0
[  249.566060]  [<ffffffff81133170>] generic_file_direct_write+0xc0/0x180
[  249.566062]  [<ffffffff8135d07e>] btrfs_file_aio_write+0x41e/0x550
[  249.566065]  [<ffffffff81449b47>] ? debug_smp_processor_id+0x17/0x20
[  249.566067]  [<ffffffff81190ade>] ? __fget+0x6e/0xb0
[  249.566070]  [<ffffffff811be825>] do_io_submit+0x595/0x780
[  249.566071]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  249.566073]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  249.566075]  [<ffffffff811bea20>] SyS_io_submit+0x10/0x20
[  249.566076]  [<ffffffff817599d2>] system_call_fastpath+0x16/0x1b
[  277.397138] SysRq : Show Blocked State
[  277.397142]   task                        PC stack   pid father
[  277.397147] kworker/u8:2    D ffff8804096e9190     0   108      2 0x00000000
[  277.397154] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-1)
[  277.397156]  ffff8804096ef9c0 0000000000000046 000000000000a000 ffff8804096e9190
[  277.397157]  ffff8804096effd8 ffff8804096f6150 ffff880409024800 0000000000000040
[  277.397159]  00000002d1bdffff ffff8804096ef9a0 ffffffff81352892 0000000000000000
[  277.397161] Call Trace:
[  277.397166]  [<ffffffff81352892>] ? run_delalloc_range+0x182/0x350
[  277.397168]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  277.397171]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  277.397173]  [<ffffffff81754b29>] schedule+0x29/0x70
[  277.397175]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  277.397176]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  277.397178]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  277.397179]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  277.397182]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  277.397184]  [<ffffffff813656ae>] ? flush_write_bio+0xe/0x10
[  277.397186]  [<ffffffff813698b8>] extent_write_cache_pages.isra.32.constprop.49+0x3c8/0x3e0
[  277.397188]  [<ffffffff8136a8bd>] extent_writepages+0x4d/0x70
[  277.397189]  [<ffffffff8134ed30>] ? __btrfs_submit_bio_start_direct_io+0x30/0x30
[  277.397191]  [<ffffffff8134dae8>] btrfs_writepages+0x28/0x30
[  277.397192]  [<ffffffff8113c7d1>] do_writepages+0x21/0x50
[  277.397194]  [<ffffffff8119d4b0>] __writeback_single_inode+0x40/0x2a0
[  277.397195]  [<ffffffff810ad87c>] ? load_balance+0x16c/0x8c0
[  277.397197]  [<ffffffff8119e32a>] writeback_sb_inodes+0x26a/0x450
[  277.397198]  [<ffffffff8119e5af>] __writeback_inodes_wb+0x9f/0xd0
[  277.397200]  [<ffffffff8119e80b>] wb_writeback+0x22b/0x330
[  277.397201]  [<ffffffff8119f234>] bdi_writeback_workfn+0x314/0x480
[  277.397204]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  277.397205]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  277.397207]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  277.397209]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  277.397211]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397213]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  277.397215]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397216] kworker/u8:7    D ffff88041e212a00     0   113      2 0x00000000
[  277.397219] Workqueue: btrfs-flush_delalloc normal_work_helper
[  277.397220]  ffff88040944fb40 0000000000000046 000000000000a000 ffff8804096f6150
[  277.397221]  ffff88040944ffd8 ffffffff819ad480 ffff880409024800 0000000000000004
[  277.397223]  0000000000003fff ffff88040944fb20 ffffffff81352892 0000000000000000
[  277.397224] Call Trace:
[  277.397226]  [<ffffffff81352892>] ? run_delalloc_range+0x182/0x350
[  277.397227]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  277.397229]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  277.397230]  [<ffffffff81754b29>] schedule+0x29/0x70
[  277.397231]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  277.397232]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  277.397234]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  277.397235]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  277.397237]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  277.397239]  [<ffffffff813656ae>] ? flush_write_bio+0xe/0x10
[  277.397240]  [<ffffffff813698b8>] extent_write_cache_pages.isra.32.constprop.49+0x3c8/0x3e0
[  277.397242]  [<ffffffff81758667>] ? _raw_spin_lock+0x17/0x40
[  277.397243]  [<ffffffff8136a8bd>] extent_writepages+0x4d/0x70
[  277.397245]  [<ffffffff8134ed30>] ? __btrfs_submit_bio_start_direct_io+0x30/0x30
[  277.397246]  [<ffffffff8134dae8>] btrfs_writepages+0x28/0x30
[  277.397247]  [<ffffffff8113c7d1>] do_writepages+0x21/0x50
[  277.397249]  [<ffffffff811328d9>] __filemap_fdatawrite_range+0x59/0x60
[  277.397250]  [<ffffffff8113292c>] filemap_flush+0x1c/0x20
[  277.397251]  [<ffffffff8135074a>] btrfs_run_delalloc_work+0x5a/0xa0
[  277.397253]  [<ffffffff813788a7>] normal_work_helper+0x77/0x350
[  277.397254]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  277.397256]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  277.397257]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  277.397258]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  277.397260]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397262]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  277.397264]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397267] btrfs-transacti D ffff88041e392a00     0  1031      2 0x00000000
[  277.397268]  ffff880409ec3c90 0000000000000046 000000000000a000 ffff88040d34a910
[  277.397269]  ffff880409ec3fd8 ffff88041c271290 ffff8804096f61b8 ffff88041e212a00
[  277.397271]  ffff8804096f61b8 ffff880409ec3be8 ffffffff810a8eb8 ffffffff819ad480
[  277.397272] Call Trace:
[  277.397275]  [<ffffffff810a8eb8>] ? __enqueue_entity+0x78/0x80
[  277.397277]  [<ffffffff81449b47>] ? debug_smp_processor_id+0x17/0x20
[  277.397279]  [<ffffffff810a162e>] ? resched_task+0x2e/0x80
[  277.397280]  [<ffffffff810a1cf5>] ? check_preempt_curr+0x75/0xa0
[  277.397282]  [<ffffffff810a1d39>] ? ttwu_do_wakeup+0x19/0xf0
[  277.397283]  [<ffffffff81754b29>] schedule+0x29/0x70
[  277.397284]  [<ffffffff81753e79>] schedule_timeout+0x189/0x200
[  277.397285]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  277.397287]  [<ffffffff810a2ccd>] ? preempt_count_add+0x4d/0xa0
[  277.397288]  [<ffffffff81755533>] wait_for_common+0xd3/0x180
[  277.397290]  [<ffffffff810a4580>] ? wake_up_process+0x40/0x40
[  277.397291]  [<ffffffff817555fd>] wait_for_completion+0x1d/0x20
[  277.397293]  [<ffffffff8135a796>] btrfs_wait_and_free_delalloc_work+0x16/0x30
[  277.397295]  [<ffffffff813641de>] btrfs_run_ordered_operations+0x1ee/0x2c0
[  277.397298]  [<ffffffff8134aa67>] btrfs_commit_transaction+0x27/0xa30
[  277.397300]  [<ffffffff81346a5d>] transaction_kthread+0x1ad/0x240
[  277.397301]  [<ffffffff813468b0>] ? btrfs_cleanup_transaction+0x580/0x580
[  277.397303]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  277.397305]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397307]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  277.397308]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397312] kworker/u8:10   D ffff88041e292a00     0  2198      2 0x00000000
[  277.397314] Workqueue: btrfs-delalloc normal_work_helper
[  277.397315]  ffff88040a9ff850 0000000000000046 000000000000a000 ffff88040d2b3110
[  277.397316]  ffff88040a9fffd8 ffff88041c23aa10 ffff8804094e3628 ffff88040a9ff7e8
[  277.397317]  ffffffff815c08c8 0000000000000001 ffff88040d58a800 ffff8800da3d2d08
[  277.397318] Call Trace:
[  277.397321]  [<ffffffff815c08c8>] ? scsi_request_fn+0x48/0x480
[  277.397322]  [<ffffffff81758736>] ? _raw_spin_unlock+0x16/0x40
[  277.397325]  [<ffffffff81413d0b>] ? queue_unplugged+0x3b/0xd0
[  277.397326]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  277.397328]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  277.397329]  [<ffffffff81754b29>] schedule+0x29/0x70
[  277.397330]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  277.397332]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  277.397333]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  277.397335]  [<ffffffff814169b4>] ? blk_finish_plug+0x14/0x40
[  277.397337]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  277.397338]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  277.397339]  [<ffffffff8113145c>] find_lock_entry+0x4c/0x70
[  277.397341]  [<ffffffff81132184>] find_or_create_page+0x34/0xa0
[  277.397343]  [<ffffffff8138a6ce>] io_ctl_prepare_pages+0x4e/0x160
[  277.397344]  [<ffffffff8138d1ea>] __load_free_space_cache+0x1da/0x690
[  277.397346]  [<ffffffff8138d79c>] load_free_space_cache+0xfc/0x1c0
[  277.397349]  [<ffffffff8132fc62>] cache_block_group+0x192/0x390
[  277.397350]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  277.397352]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  277.397353]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  277.397355]  [<ffffffff81351923>] cow_file_range+0x123/0x400
[  277.397356]  [<ffffffff81352c22>] submit_compressed_extents+0x1c2/0x470
[  277.397358]  [<ffffffff81352ed0>] ? submit_compressed_extents+0x470/0x470
[  277.397359]  [<ffffffff81352f56>] async_cow_submit+0x86/0x90
[  277.397361]  [<ffffffff81378a35>] normal_work_helper+0x205/0x350
[  277.397362]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  277.397364]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  277.397365]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  277.397367]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  277.397368]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397370]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  277.397372]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  277.397377] AioMgr0-N       D ffff88041e392a00     0  3146   3083 0x00000000
[  277.397378]  ffff8803efcb3878 0000000000000082 000000000000a000 ffff88040d34a0d0
[  277.397380]  ffff8803efcb3fd8 ffff88041c271290 ffff8803efcb3810 0000000000011200
[  277.397381]  ffff88040d34a0d0 ffff88040d3851c0 ffff8803efcb37d8 ffffffff81133f15
[  277.397382] Call Trace:
[  277.397384]  [<ffffffff81133f15>] ? mempool_alloc_slab+0x15/0x20
[  277.397385]  [<ffffffff8138b84e>] ? tree_search_offset.isra.22+0x12e/0x1f0
[  277.397387]  [<ffffffff817586ad>] ? _raw_spin_lock_irqsave+0x1d/0x50
[  277.397389]  [<ffffffff81754b29>] schedule+0x29/0x70
[  277.397391]  [<ffffffff8132fbf1>] cache_block_group+0x121/0x390
[  277.397392]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  277.397393]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  277.397395]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  277.397396]  [<ffffffff81359ac2>] btrfs_get_blocks_direct+0x4b2/0x610
[  277.397399]  [<ffffffff811ae9c6>] __blockdev_direct_IO+0xae6/0x3880
[  277.397402]  [<ffffffff8134e092>] btrfs_direct_IO+0x1d2/0x3c0
[  277.397403]  [<ffffffff81359610>] ? can_nocow_extent+0x460/0x460
[  277.397404]  [<ffffffff8134fd30>] ? insert_reserved_file_extent.constprop.56+0x2f0/0x2f0
[  277.397406]  [<ffffffff81133170>] generic_file_direct_write+0xc0/0x180
[  277.397408]  [<ffffffff8135d07e>] btrfs_file_aio_write+0x41e/0x550
[  277.397410]  [<ffffffff81449b47>] ? debug_smp_processor_id+0x17/0x20
[  277.397411]  [<ffffffff81190ade>] ? __fget+0x6e/0xb0
[  277.397415]  [<ffffffff811be825>] do_io_submit+0x595/0x780
[  277.397416]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  277.397417]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  277.397419]  [<ffffffff811bea20>] SyS_io_submit+0x10/0x20
[  277.397421]  [<ffffffff817599d2>] system_call_fastpath+0x16/0x1b
[  293.369493] SysRq : Show Blocked State
[  293.369497]   task                        PC stack   pid father
[  293.369503] kworker/u8:2    D ffff8804096e9190     0   108      2 0x00000000
[  293.369510] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-1)
[  293.369511]  ffff8804096ef9c0 0000000000000046 000000000000a000 ffff8804096e9190
[  293.369513]  ffff8804096effd8 ffff8804096f6150 ffff880409024800 0000000000000040
[  293.369514]  00000002d1bdffff ffff8804096ef9a0 ffffffff81352892 0000000000000000
[  293.369516] Call Trace:
[  293.369521]  [<ffffffff81352892>] ? run_delalloc_range+0x182/0x350
[  293.369524]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  293.369527]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  293.369529]  [<ffffffff81754b29>] schedule+0x29/0x70
[  293.369531]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  293.369532]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  293.369534]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  293.369536]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  293.369538]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  293.369540]  [<ffffffff813656ae>] ? flush_write_bio+0xe/0x10
[  293.369542]  [<ffffffff813698b8>] extent_write_cache_pages.isra.32.constprop.49+0x3c8/0x3e0
[  293.369544]  [<ffffffff8136a8bd>] extent_writepages+0x4d/0x70
[  293.369546]  [<ffffffff8134ed30>] ? __btrfs_submit_bio_start_direct_io+0x30/0x30
[  293.369547]  [<ffffffff8134dae8>] btrfs_writepages+0x28/0x30
[  293.369549]  [<ffffffff8113c7d1>] do_writepages+0x21/0x50
[  293.369550]  [<ffffffff8119d4b0>] __writeback_single_inode+0x40/0x2a0
[  293.369552]  [<ffffffff810ad87c>] ? load_balance+0x16c/0x8c0
[  293.369553]  [<ffffffff8119e32a>] writeback_sb_inodes+0x26a/0x450
[  293.369555]  [<ffffffff8119e5af>] __writeback_inodes_wb+0x9f/0xd0
[  293.369556]  [<ffffffff8119e80b>] wb_writeback+0x22b/0x330
[  293.369558]  [<ffffffff8119f234>] bdi_writeback_workfn+0x314/0x480
[  293.369560]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  293.369562]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  293.369563]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  293.369565]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  293.369567]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369570]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  293.369572]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369573] kworker/u8:7    D ffff88041e212a00     0   113      2 0x00000000
[  293.369576] Workqueue: btrfs-flush_delalloc normal_work_helper
[  293.369577]  ffff88040944fb40 0000000000000046 000000000000a000 ffff8804096f6150
[  293.369578]  ffff88040944ffd8 ffffffff819ad480 ffff880409024800 0000000000000004
[  293.369579]  0000000000003fff ffff88040944fb20 ffffffff81352892 0000000000000000
[  293.369581] Call Trace:
[  293.369582]  [<ffffffff81352892>] ? run_delalloc_range+0x182/0x350
[  293.369584]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  293.369585]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  293.369586]  [<ffffffff81754b29>] schedule+0x29/0x70
[  293.369588]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  293.369589]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  293.369590]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  293.369592]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  293.369593]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  293.369595]  [<ffffffff813656ae>] ? flush_write_bio+0xe/0x10
[  293.369596]  [<ffffffff813698b8>] extent_write_cache_pages.isra.32.constprop.49+0x3c8/0x3e0
[  293.369598]  [<ffffffff81758667>] ? _raw_spin_lock+0x17/0x40
[  293.369600]  [<ffffffff8136a8bd>] extent_writepages+0x4d/0x70
[  293.369601]  [<ffffffff8134ed30>] ? __btrfs_submit_bio_start_direct_io+0x30/0x30
[  293.369602]  [<ffffffff8134dae8>] btrfs_writepages+0x28/0x30
[  293.369603]  [<ffffffff8113c7d1>] do_writepages+0x21/0x50
[  293.369605]  [<ffffffff811328d9>] __filemap_fdatawrite_range+0x59/0x60
[  293.369606]  [<ffffffff8113292c>] filemap_flush+0x1c/0x20
[  293.369608]  [<ffffffff8135074a>] btrfs_run_delalloc_work+0x5a/0xa0
[  293.369609]  [<ffffffff813788a7>] normal_work_helper+0x77/0x350
[  293.369611]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  293.369612]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  293.369613]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  293.369615]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  293.369617]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369618]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  293.369620]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369623] btrfs-transacti D ffff88041e392a00     0  1031      2 0x00000000
[  293.369624]  ffff880409ec3c90 0000000000000046 000000000000a000 ffff88040d34a910
[  293.369626]  ffff880409ec3fd8 ffff88041c271290 ffff8804096f61b8 ffff88041e212a00
[  293.369627]  ffff8804096f61b8 ffff880409ec3be8 ffffffff810a8eb8 ffffffff819ad480
[  293.369628] Call Trace:
[  293.369630]  [<ffffffff810a8eb8>] ? __enqueue_entity+0x78/0x80
[  293.369633]  [<ffffffff81449b47>] ? debug_smp_processor_id+0x17/0x20
[  293.369634]  [<ffffffff810a162e>] ? resched_task+0x2e/0x80
[  293.369636]  [<ffffffff810a1cf5>] ? check_preempt_curr+0x75/0xa0
[  293.369637]  [<ffffffff810a1d39>] ? ttwu_do_wakeup+0x19/0xf0
[  293.369638]  [<ffffffff81754b29>] schedule+0x29/0x70
[  293.369640]  [<ffffffff81753e79>] schedule_timeout+0x189/0x200
[  293.369641]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  293.369642]  [<ffffffff810a2ccd>] ? preempt_count_add+0x4d/0xa0
[  293.369644]  [<ffffffff81755533>] wait_for_common+0xd3/0x180
[  293.369645]  [<ffffffff810a4580>] ? wake_up_process+0x40/0x40
[  293.369647]  [<ffffffff817555fd>] wait_for_completion+0x1d/0x20
[  293.369648]  [<ffffffff8135a796>] btrfs_wait_and_free_delalloc_work+0x16/0x30
[  293.369650]  [<ffffffff813641de>] btrfs_run_ordered_operations+0x1ee/0x2c0
[  293.369653]  [<ffffffff8134aa67>] btrfs_commit_transaction+0x27/0xa30
[  293.369655]  [<ffffffff81346a5d>] transaction_kthread+0x1ad/0x240
[  293.369657]  [<ffffffff813468b0>] ? btrfs_cleanup_transaction+0x580/0x580
[  293.369659]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  293.369660]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369662]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  293.369664]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369667] kworker/u8:10   D ffff88041e292a00     0  2198      2 0x00000000
[  293.369669] Workqueue: btrfs-delalloc normal_work_helper
[  293.369670]  ffff88040a9ff850 0000000000000046 000000000000a000 ffff88040d2b3110
[  293.369671]  ffff88040a9fffd8 ffff88041c23aa10 ffff8804094e3628 ffff88040a9ff7e8
[  293.369673]  ffffffff815c08c8 0000000000000001 ffff88040d58a800 ffff8800da3d2d08
[  293.369674] Call Trace:
[  293.369677]  [<ffffffff815c08c8>] ? scsi_request_fn+0x48/0x480
[  293.369678]  [<ffffffff81758736>] ? _raw_spin_unlock+0x16/0x40
[  293.369681]  [<ffffffff81413d0b>] ? queue_unplugged+0x3b/0xd0
[  293.369682]  [<ffffffff810a2c3d>] ? get_parent_ip+0xd/0x50
[  293.369683]  [<ffffffff811310f0>] ? filemap_fdatawait+0x30/0x30
[  293.369685]  [<ffffffff81754b29>] schedule+0x29/0x70
[  293.369686]  [<ffffffff81754daf>] io_schedule+0x8f/0xd0
[  293.369687]  [<ffffffff811310fe>] sleep_on_page+0xe/0x20
[  293.369689]  [<ffffffff81755298>] __wait_on_bit_lock+0x48/0xb0
[  293.369691]  [<ffffffff814169b4>] ? blk_finish_plug+0x14/0x40
[  293.369692]  [<ffffffff8113123a>] __lock_page+0x6a/0x70
[  293.369693]  [<ffffffff810b3400>] ? autoremove_wake_function+0x40/0x40
[  293.369695]  [<ffffffff8113145c>] find_lock_entry+0x4c/0x70
[  293.369697]  [<ffffffff81132184>] find_or_create_page+0x34/0xa0
[  293.369698]  [<ffffffff8138a6ce>] io_ctl_prepare_pages+0x4e/0x160
[  293.369699]  [<ffffffff8138d1ea>] __load_free_space_cache+0x1da/0x690
[  293.369701]  [<ffffffff8138d79c>] load_free_space_cache+0xfc/0x1c0
[  293.369704]  [<ffffffff8132fc62>] cache_block_group+0x192/0x390
[  293.369705]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  293.369707]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  293.369709]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  293.369710]  [<ffffffff81351923>] cow_file_range+0x123/0x400
[  293.369712]  [<ffffffff81352c22>] submit_compressed_extents+0x1c2/0x470
[  293.369713]  [<ffffffff81352ed0>] ? submit_compressed_extents+0x470/0x470
[  293.369715]  [<ffffffff81352f56>] async_cow_submit+0x86/0x90
[  293.369716]  [<ffffffff81378a35>] normal_work_helper+0x205/0x350
[  293.369718]  [<ffffffff8108f7e7>] process_one_work+0x167/0x420
[  293.369719]  [<ffffffff810904f1>] worker_thread+0x121/0x3a0
[  293.369720]  [<ffffffff810903d0>] ? manage_workers.isra.28+0x2a0/0x2a0
[  293.369722]  [<ffffffff81096499>] kthread+0xc9/0xe0
[  293.369724]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369725]  [<ffffffff8175992c>] ret_from_fork+0x7c/0xb0
[  293.369727]  [<ffffffff810963d0>] ? kthread_create_on_node+0x180/0x180
[  293.369732] AioMgr0-N       D ffff88041e392a00     0  3146   3083 0x00000000
[  293.369733]  ffff8803efcb3878 0000000000000082 000000000000a000 ffff88040d34a0d0
[  293.369734]  ffff8803efcb3fd8 ffff88041c271290 ffff8803efcb3810 0000000000011200
[  293.369736]  ffff88040d34a0d0 ffff88040d3851c0 ffff8803efcb37d8 ffffffff81133f15
[  293.369737] Call Trace:
[  293.369739]  [<ffffffff81133f15>] ? mempool_alloc_slab+0x15/0x20
[  293.369740]  [<ffffffff8138b84e>] ? tree_search_offset.isra.22+0x12e/0x1f0
[  293.369742]  [<ffffffff817586ad>] ? _raw_spin_lock_irqsave+0x1d/0x50
[  293.369743]  [<ffffffff81754b29>] schedule+0x29/0x70
[  293.369745]  [<ffffffff8132fbf1>] cache_block_group+0x121/0x390
[  293.369747]  [<ffffffff810b33c0>] ? __wake_up_sync+0x20/0x20
[  293.369748]  [<ffffffff81338159>] find_free_extent+0xab9/0xb70
[  293.369750]  [<ffffffff813383e8>] btrfs_reserve_extent+0xa8/0x140
[  293.369751]  [<ffffffff81359ac2>] btrfs_get_blocks_direct+0x4b2/0x610
[  293.369754]  [<ffffffff811ae9c6>] __blockdev_direct_IO+0xae6/0x3880
[  293.369757]  [<ffffffff8134e092>] btrfs_direct_IO+0x1d2/0x3c0
[  293.369758]  [<ffffffff81359610>] ? can_nocow_extent+0x460/0x460
[  293.369759]  [<ffffffff8134fd30>] ? insert_reserved_file_extent.constprop.56+0x2f0/0x2f0
[  293.369761]  [<ffffffff81133170>] generic_file_direct_write+0xc0/0x180
[  293.369763]  [<ffffffff8135d07e>] btrfs_file_aio_write+0x41e/0x550
[  293.369765]  [<ffffffff81449b47>] ? debug_smp_processor_id+0x17/0x20
[  293.369766]  [<ffffffff81190ade>] ? __fget+0x6e/0xb0
[  293.369769]  [<ffffffff811be825>] do_io_submit+0x595/0x780
[  293.369771]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  293.369772]  [<ffffffff8135cc60>] ? __btrfs_buffered_write+0x570/0x570
[  293.369774]  [<ffffffff811bea20>] SyS_io_submit+0x10/0x20
[  293.369776]  [<ffffffff817599d2>] system_call_fastpath+0x16/0x1b