still not fixed INFO: task smbd:7543 blocked for more than 120 seconds. [39600.198893] Not tainted 4.4.0-46-generic #67-Ubuntu [39600.198894] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39600.198896] smbd D ffff88000970be18 0 7543 1346 0x00000000 [39600.198902] ffff88000970be18 0000000200000010 ffffffff81e11500 ffff8801539c5780 [39600.198904] ffff88000970c000 ffff8800ba7eb524 ffff8801539c5780 00000000ffffffff [39600.198906] ffff8800ba7eb528 ffff88000970be30 ffffffff81830795 ffff8800ba7eb520 [39600.198908] Call Trace: [39600.198942] [<ffffffff81830795>] schedule+0x35/0x80 [39600.198944] [<ffffffff81830a3e>] schedule_preempt_disabled+0xe/0x10 [39600.198946] [<ffffffff81832679>] __mutex_lock_slowpath+0xb9/0x130 [39600.198948] [<ffffffff8183270f>] mutex_lock+0x1f/0x30 [39600.198967] [<ffffffff8121df4b>] do_unlinkat+0x12b/0x2d0 [39600.198969] [<ffffffff8121eb56>] SyS_unlink+0x16/0x20 [39600.198974] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71 [39720.198606] INFO: task btrfs-cleaner:212 blocked for more than 120 seconds. [39720.198614] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.198616] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.198619] btrfs-cleaner D ffff8801539bfce8 0 212 2 0x00000000 [39720.198625] ffff8801539bfce8 ffff8801bfd16d00 ffff8801b8228000 ffff8801539c0000 [39720.198629] ffff8801539c0000 ffff8800a7ed11f0 ffff8800a7ed1000 ffff8800a7ed11f0 [39720.198632] 0000000000000001 ffff8801539bfd00 ffffffff81830795 ffff8801b797ef30 [39720.198636] Call Trace: [39720.198647] [<ffffffff81830795>] schedule+0x35/0x80 [39720.198783] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.198802] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.198815] [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs] [39720.198828] [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs] [39720.198839] [<ffffffffc0167dcf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs] [39720.198841] [<ffffffff818300e6>] ? __schedule+0x3b6/0xa30 [39720.198854] [<ffffffffc017eb02>] btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs] [39720.198866] [<ffffffffc01773cf>] cleaner_kthread+0xcf/0x220 [btrfs] [39720.198878] [<ffffffffc0177300>] ? check_leaf+0x360/0x360 [btrfs] [39720.198914] [<ffffffff810a09e8>] kthread+0xd8/0xf0 [39720.198917] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.198919] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70 [39720.198921] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.198938] INFO: task nmbd:1308 blocked for more than 120 seconds. [39720.198940] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.198941] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.198942] nmbd D ffff8801b6277ac8 0 1308 1 0x00000000 [39720.198945] ffff8801b6277ac8 0000000000000286 ffff8801539c0c80 ffff8801b4a52580 [39720.198947] ffff8801b6278000 ffff8801bfd16d00 7fffffffffffffff ffffffff81830f90 [39720.198949] ffff8801b6277c20 ffff8801b6277ae0 ffffffff81830795 0000000000000000 [39720.198951] Call Trace: [39720.198953] [<ffffffff81830f90>] ? bit_wait+0x60/0x60 [39720.198954] [<ffffffff81830795>] schedule+0x35/0x80 [39720.198956] [<ffffffff818338b5>] schedule_timeout+0x1b5/0x270 [39720.198963] [<ffffffff81037e19>] ? sched_clock+0x9/0x10 [39720.198971] [<ffffffff8106425e>] ? kvm_clock_get_cycles+0x1e/0x20 [39720.198983] [<ffffffff810f5b9c>] ? ktime_get+0x3c/0xb0 [39720.198985] [<ffffffff81830f90>] ? bit_wait+0x60/0x60 [39720.198986] [<ffffffff8182fcc4>] io_schedule_timeout+0xa4/0x110 [39720.198988] [<ffffffff81830fab>] bit_wait_io+0x1b/0x70 [39720.198990] [<ffffffff81830b3d>] __wait_on_bit+0x5d/0x90 [39720.199000] [<ffffffff8118d6bb>] wait_on_page_bit+0xcb/0xf0 [39720.199003] [<ffffffff810c3f10>] ? autoremove_wake_function+0x40/0x40 [39720.199016] [<ffffffffc019155d>] prepare_pages+0x17d/0x190 [btrfs] [39720.199030] [<ffffffffc0192120>] __btrfs_buffered_write+0x200/0x5f0 [btrfs] [39720.199044] [<ffffffffc01959f1>] btrfs_file_write_iter+0x171/0x560 [btrfs] [39720.199051] [<ffffffff811ec1a7>] ? kmem_cache_alloc+0x187/0x1f0 [39720.199055] [<ffffffff8121d306>] ? getname_flags+0x56/0x1f0 [39720.199058] [<ffffffff8120d27b>] new_sync_write+0x9b/0xe0 [39720.199060] [<ffffffff8120d2e6>] __vfs_write+0x26/0x40 [39720.199065] [<ffffffff8120dc69>] vfs_write+0xa9/0x1a0 [39720.199067] [<ffffffff8120e925>] SyS_write+0x55/0xc0 [39720.199069] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71 [39720.199075] INFO: task kworker/u4:0:6969 blocked for more than 120 seconds. [39720.199076] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199077] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199078] kworker/u4:0 D ffff880028903c48 0 6969 2 0x00000000 [39720.199106] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [39720.199108] ffff880028903c48 00000001801a001a ffff8801b7708000 ffff8801b7c98000 [39720.199110] ffff880028904000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0 [39720.199112] 0000000000000001 ffff880028903c60 ffffffff81830795 ffff8801b797ef30 [39720.199114] Call Trace: [39720.199116] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199129] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199131] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199144] [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs] [39720.199158] [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs] [39720.199172] [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [39720.199196] [<ffffffff8140a755>] ? find_next_bit+0x15/0x20 [39720.199211] [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs] [39720.199227] [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [39720.199241] [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [39720.199245] [<ffffffff8109a4a5>] process_one_work+0x165/0x480 [39720.199246] [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0 [39720.199248] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199250] [<ffffffff810a09e8>] kthread+0xd8/0xf0 [39720.199251] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199268] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70 [39720.199271] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199274] INFO: task smbd:7030 blocked for more than 120 seconds. [39720.199276] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199277] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199278] smbd D ffff880022ebbd28 0 7030 1346 0x00000000 [39720.199280] ffff880022ebbd28 0001880000000001 ffff8801539c0000 ffff8801b551d780 [39720.199286] ffff880022ebc000 ffff8800b868f1f0 ffff8800b868f000 ffff8800b868f1f0 [39720.199288] 0000000000000001 ffff880022ebbd40 ffffffff81830795 ffff8801b797ef30 [39720.199290] Call Trace: [39720.199292] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199305] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199307] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199319] [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs] [39720.199332] [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs] [39720.199345] [<ffffffffc018af32>] btrfs_setattr+0x182/0x360 [btrfs] [39720.199349] [<ffffffff8122aca5>] notify_change+0x235/0x360 [39720.199351] [<ffffffff8120a8c5>] do_truncate+0x75/0xc0 [39720.199353] [<ffffffff8120b879>] do_sys_ftruncate.constprop.14+0x119/0x170 [39720.199354] [<ffffffff8120ba7e>] SyS_ftruncate+0xe/0x10 [39720.199356] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71 [39720.199359] INFO: task kworker/u4:4:7033 blocked for more than 120 seconds. [39720.199360] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199361] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199362] kworker/u4:4 D ffff88001ab07c48 0 7033 2 0x00000000 [39720.199378] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [39720.199379] ffff88001ab07c48 0000000000000040 ffff8801b7c98000 ffff8801b5519900 [39720.199381] ffff88001ab08000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0 [39720.199383] 0000000000000001 ffff88001ab07c60 ffffffff81830795 ffff8801b797ef30 [39720.199385] Call Trace: [39720.199387] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199399] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199401] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199414] [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs] [39720.199448] [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs] [39720.199462] [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [39720.199475] [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs] [39720.199489] [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [39720.199503] [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [39720.199505] [<ffffffff8109a4a5>] process_one_work+0x165/0x480 [39720.199507] [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0 [39720.199509] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199511] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199512] [<ffffffff810a09e8>] kthread+0xd8/0xf0 [39720.199514] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199516] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70 [39720.199517] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199520] INFO: task kworker/u4:2:7390 blocked for more than 120 seconds. [39720.199522] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199523] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199524] kworker/u4:2 D ffff880111e4bc48 0 7390 2 0x00000000 [39720.199539] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [39720.199541] ffff880111e4bc48 0000000000000040 ffff8801b8228000 ffff8801b7708000 [39720.199543] ffff880111e4c000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0 [39720.199545] 0000000000000001 ffff880111e4bc60 ffffffff81830795 ffff8801b797ef30 [39720.199547] Call Trace: [39720.199562] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199575] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199577] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199590] [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs] [39720.199603] [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs] [39720.199616] [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [39720.199619] [<ffffffff811af88f>] ? wb_wakeup_delayed+0x5f/0x70 [39720.199632] [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs] [39720.199646] [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [39720.199660] [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [39720.199662] [<ffffffff8109a4a5>] process_one_work+0x165/0x480 [39720.199664] [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0 [39720.199665] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199667] [<ffffffff810a09e8>] kthread+0xd8/0xf0 [39720.199669] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199670] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70 [39720.199672] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199674] INFO: task kworker/u4:6:7391 blocked for more than 120 seconds. [39720.199676] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199677] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199678] kworker/u4:6 D ffff8801111e3c48 0 7391 2 0x00000000 [39720.199694] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [39720.199695] ffff8801111e3c48 0000000000000040 ffff8801539c0c80 ffff8801b770f080 [39720.199697] ffff8801111e4000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0 [39720.199699] 0000000000000001 ffff8801111e3c60 ffffffff81830795 ffff8801b797ef30 [39720.199701] Call Trace: [39720.199703] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199715] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199717] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199730] [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs] [39720.199742] [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs] [39720.199756] [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [39720.199758] [<ffffffff8140a755>] ? find_next_bit+0x15/0x20 [39720.199771] [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs] [39720.199785] [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [39720.199799] [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [39720.199801] [<ffffffff8109a4a5>] process_one_work+0x165/0x480 [39720.199802] [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0 [39720.199804] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199806] [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480 [39720.199807] [<ffffffff810a09e8>] kthread+0xd8/0xf0 [39720.199809] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199811] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70 [39720.199812] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0 [39720.199818] INFO: task smbd:7542 blocked for more than 120 seconds. [39720.199819] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199820] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199821] smbd D ffff88000a82fc80 0 7542 1346 0x00000000 [39720.199824] ffff88000a82fc80 0001880000000001 ffffffff81e11500 ffff8801539c2580 [39720.199826] ffff88000a830000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0 [39720.199828] 0000000000000001 ffff88000a82fc98 ffffffff81830795 ffff8801b797ef30 [39720.199830] Call Trace: [39720.199831] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199844] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [39720.199846] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60 [39720.199858] [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs] [39720.199884] [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs] [39720.199898] [<ffffffffc018de0d>] btrfs_mknod+0x4d/0x200 [btrfs] [39720.199901] [<ffffffff8121a27d>] vfs_mknod+0xdd/0x150 [39720.199910] [<ffffffff817d0361>] unix_bind+0x321/0x3b0 [39720.199927] [<ffffffff8170ce82>] SYSC_bind+0xd2/0x110 [39720.199930] [<ffffffff81220731>] ? SyS_fcntl+0x4b1/0x5e0 [39720.199932] [<ffffffff8170dace>] SyS_bind+0xe/0x10 [39720.199934] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71 [39720.199936] INFO: task smbd:7543 blocked for more than 120 seconds. [39720.199937] Not tainted 4.4.0-46-generic #67-Ubuntu [39720.199938] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [39720.199939] smbd D ffff88000970be18 0 7543 1346 0x00000000 [39720.199942] ffff88000970be18 0000000200000010 ffffffff81e11500 ffff8801539c5780 [39720.199944] ffff88000970c000 ffff8800ba7eb524 ffff8801539c5780 00000000ffffffff [39720.199946] ffff8800ba7eb528 ffff88000970be30 ffffffff81830795 ffff8800ba7eb520 [39720.199948] Call Trace: [39720.199949] [<ffffffff81830795>] schedule+0x35/0x80 [39720.199951] [<ffffffff81830a3e>] schedule_preempt_disabled+0xe/0x10 [39720.199952] [<ffffffff81832679>] __mutex_lock_slowpath+0xb9/0x130 [39720.199954] [<ffffffff8183270f>] mutex_lock+0x1f/0x30 [39720.199956] [<ffffffff8121df4b>] do_unlinkat+0x12b/0x2d0 [39720.199958] [<ffffffff8121eb56>] SyS_unlink+0x16/0x20 [39720.199960] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1614887 Title: Lage samba file transfers block btrfs to hung task Status in linux package in Ubuntu: New Bug description: this bug occurs when user transfer big files ~1gb to the samba server on xenial/wily on wily this problem was NOT showing with samba 4.2 (i guess) until samba was also upgraded to 4.3. the samba runs on a KVM VM samba version: 4.3.9+dfsg-0ubuntu0.16.04. [ 30.171211] zram: Added device: zram0 [ 30.356301] zram0: detected capacity change from 0 to 1518252032 [ 30.668855] Adding 1482664k swap on /dev/zram0. Priority:5 extents:1 across:1482664k SSFS [ 35.608271] [drm:qxl_enc_commit [qxl]] *ERROR* head number too large or missing monitors config: ffffc90000e30000, 0 [ 45.008364] Non-volatile memory driver v1.3 [65636.820111] INFO: task btrfs-cleaner:631 blocked for more than 120 seconds. [65636.820128] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.820129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.820131] btrfs-cleaner D ffff88005ae93ce8 0 631 2 0x00000000 [65636.820137] ffff88005ae93ce8 ffff8800bbb86400 ffff8801b0dc3e80 ffff8801b0dc2580 [65636.820139] ffff88005ae94000 ffff8801851971f0 ffff880185197000 ffff8801851971f0 [65636.820141] 0000000000000001 ffff88005ae93d00 ffffffff81829ec5 ffff8801b7fc4000 [65636.820143] Call Trace: [65636.820182] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.820360] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.820395] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.820409] [<ffffffffc01728f5>] start_transaction+0x2c5/0x4b0 [btrfs] [65636.820434] [<ffffffffc0172af8>] btrfs_start_transaction+0x18/0x20 [btrfs] [65636.820452] [<ffffffffc015adcf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs] [65636.820454] [<ffffffff81829816>] ? __schedule+0x3b6/0xa30 [65636.820467] [<ffffffffc0171b02>] btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs] [65636.820480] [<ffffffffc016a3cf>] cleaner_kthread+0xcf/0x220 [btrfs] [65636.820493] [<ffffffffc016a300>] ? check_leaf+0x360/0x360 [btrfs] [65636.820497] [<ffffffff810a0808>] kthread+0xd8/0xf0 [65636.820499] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.820505] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [65636.820507] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.820550] INFO: task kworker/u4:1:7760 blocked for more than 120 seconds. [65636.820551] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.820558] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.820559] kworker/u4:1 D ffff880008433c48 0 7760 2 0x00000000 [65636.820579] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [65636.820581] ffff880008433c48 0000000000000040 ffff8800b9d98c80 ffff8801b51a9900 [65636.820582] ffff880008434000 ffff8801851941f0 ffff880185194000 ffff8801851941f0 [65636.820584] 0000000000000001 ffff880008433c60 ffffffff81829ec5 ffff8801b7fc4000 [65636.820586] Call Trace: [65636.820588] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.820602] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.820604] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.820620] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs] [65636.820650] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs] [65636.820667] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [65636.820692] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs] [65636.820718] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [65636.820723] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0 [65636.820741] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [65636.820753] [<ffffffff8109a2c5>] process_one_work+0x165/0x480 [65636.820755] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0 [65636.820757] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.820758] [<ffffffff810a0808>] kthread+0xd8/0xf0 [65636.820760] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.820761] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [65636.820763] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.820770] INFO: task kworker/u4:2:7814 blocked for more than 120 seconds. [65636.820771] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.820772] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.820773] kworker/u4:2 D ffff880102027c48 0 7814 2 0x00000000 [65636.820848] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [65636.820850] ffff880102027c48 0000000000000040 ffff8801b51ae400 ffff8801b51a8c80 [65636.820852] ffff880102028000 ffff8801851941f0 ffff880185194000 ffff8801851941f0 [65636.820853] 0000000000000001 ffff880102027c60 ffffffff81829ec5 ffff8801b7fc4000 [65636.820855] Call Trace: [65636.820857] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.820877] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.820879] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.820893] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs] [65636.820908] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs] [65636.820922] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [65636.820934] [<ffffffff813b9ade>] ? bio_free+0x4e/0x60 [65636.820936] [<ffffffff813b9b13>] ? bio_put+0x23/0x30 [65636.820950] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs] [65636.820964] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [65636.820966] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0 [65636.820999] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [65636.821002] [<ffffffff8109a2c5>] process_one_work+0x165/0x480 [65636.821003] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0 [65636.821005] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821007] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821008] [<ffffffff810a0808>] kthread+0xd8/0xf0 [65636.821010] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.821012] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [65636.821013] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.821016] INFO: task kworker/u4:3:7843 blocked for more than 120 seconds. [65636.821017] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.821018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.821019] kworker/u4:3 D ffff8800082abc48 0 7843 2 0x00000000 [65636.821047] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] [65636.821048] ffff8800082abc48 0000000000000040 ffff8801b51ae400 ffff8801b6a06400 [65636.821050] ffff8800082ac000 ffff8801851941f0 ffff880185194000 ffff8801851941f0 [65636.821051] 0000000000000001 ffff8800082abc60 ffffffff81829ec5 ffff8801b7fc4000 [65636.821053] Call Trace: [65636.821055] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.821069] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.821071] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.821084] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs] [65636.821104] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs] [65636.821118] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs] [65636.821131] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs] [65636.821145] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [65636.821147] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0 [65636.821161] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs] [65636.821163] [<ffffffff8109a2c5>] process_one_work+0x165/0x480 [65636.821165] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0 [65636.821167] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821168] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821170] [<ffffffff810a0808>] kthread+0xd8/0xf0 [65636.821171] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.821173] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [65636.821175] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.821176] INFO: task cupsd:7983 blocked for more than 120 seconds. [65636.821178] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.821179] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.821179] cupsd D ffff880005d67d48 0 7983 1 0x00000000 [65636.821195] ffff880005d67d48 0001880000000001 ffff8801b0dc2580 ffff8800bbb86400 [65636.821197] ffff880005d68000 ffff8801851941f0 ffff880185194000 ffff8801851941f0 [65636.821198] 0000000000000001 ffff880005d67d60 ffffffff81829ec5 ffff8801b7fc4000 [65636.821200] Call Trace: [65636.821202] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.821221] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.821223] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.821236] [<ffffffffc01728f5>] start_transaction+0x2c5/0x4b0 [btrfs] [65636.821250] [<ffffffffc0172f78>] btrfs_start_transaction_fallback_global_rsv+0x28/0xc0 [btrfs] [65636.821263] [<ffffffffc017bf45>] btrfs_unlink+0x35/0xb0 [btrfs] [65636.821280] [<ffffffff8121a151>] vfs_unlink+0xf1/0x1a0 [65636.821288] [<ffffffff8138d1eb>] ? apparmor_path_unlink+0x1b/0x20 [65636.821291] [<ffffffff8121d749>] do_unlinkat+0x279/0x2d0 [65636.821293] [<ffffffff8121e206>] SyS_unlink+0x16/0x20 [65636.821295] [<ffffffff8182dfb2>] entry_SYSCALL_64_fastpath+0x16/0x71 [65636.821298] INFO: task kworker/u4:6:8029 blocked for more than 120 seconds. [65636.821299] Not tainted 4.4.0-36-generic #55-Ubuntu [65636.821300] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [65636.821301] kworker/u4:6 D ffff8800053bfcc8 0 8029 2 0x00000000 [65636.821323] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs] [65636.821324] ffff8800053bfcc8 ffffffff811908e9 ffff8800bbb86400 ffff8801b51ad780 [65636.821326] ffff8800053c0000 ffff8801851971f0 ffff880185197000 ffff8801851971f0 [65636.821328] 0000000000000001 ffff8800053bfce0 ffffffff81829ec5 ffff8801b7fc4000 [65636.821329] Call Trace: [65636.821345] [<ffffffff811908e9>] ? mempool_free+0x29/0x80 [65636.821348] [<ffffffff81829ec5>] schedule+0x35/0x80 [65636.821366] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [65636.821368] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60 [65636.821381] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs] [65636.821406] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs] [65636.821418] [<ffffffffc015cc58>] delayed_ref_async_start+0x18/0x90 [btrfs] [65636.821432] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs] [65636.821446] [<ffffffffc01a411e>] btrfs_extent_refs_helper+0xe/0x10 [btrfs] [65636.821454] [<ffffffff8109a2c5>] process_one_work+0x165/0x480 [65636.821456] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0 [65636.821457] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821459] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [65636.821460] [<ffffffff810a0808>] kthread+0xd8/0xf0 [65636.821462] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [65636.821464] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [65636.821465] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [78275.687923] cfg80211: World regulatory domain updated: [78275.687930] cfg80211: DFS Master region: unset ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic-lts-xenial (not installed) ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: wvk 8774 F.... pulseaudio CurrentDesktop: MATE Date: Fri Aug 19 11:16:39 2016 HibernationDevice: RESUME=UUID=a3e458ea-200f-4779-a1e5-874bbca3fd2f InstallationDate: Installed on 2015-08-24 (360 days ago) InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: lo no wireless extensions. eth0 no wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcFB: 0 qxldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-36-generic root=UUID=f7f34b00-862b-45a7-9cdb-ee1546aac7db ro rootflags=subvol=@ RelatedPackageVersions: linux-restricted-modules-4.4.0-36-generic N/A linux-backports-modules-4.4.0-36-generic N/A linux-firmware 1.157.3 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2015-10-23 (300 days ago) dmi.bios.date: 01/01/2011 dmi.bios.vendor: Bochs dmi.bios.version: Bochs dmi.chassis.type: 1 dmi.chassis.vendor: Bochs dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-utopic:cvnBochs:ct1:cvr: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-utopic dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1614887/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
