[43142.047947] INFO: task btrfs-cleaner:238 blocked for more than 120 seconds. [43142.047962] Not tainted 4.8.0-28-generic #30-Ubuntu [43142.047963] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43142.047965] btrfs-cleaner D ffff945e6e52bd00 0 238 2 0x00000000 [43142.047989] ffff945e6e52bd00 00ff945e6e52bcd8 ffffffffad80d540 ffff945e6fc70000 [43142.047991] 0000000000000046 ffff945e6e52c000 ffff945e6ff7b9f0 ffff945e6ff7b800 [43142.047993] ffff945e6ff7b9f0 0000000000000001 ffff945e6e52bd18 ffffffffad295845 [43142.047995] Call Trace: [43142.048026] [<ffffffffad295845>] schedule+0x35/0x80 [43142.048157] [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [43142.048174] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43142.048187] [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs] [43142.048200] [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs] [43142.048211] [<ffffffffc041ad4f>] btrfs_drop_snapshot+0x7f/0x850 [btrfs] [43142.048213] [<ffffffffad2953a8>] ? __schedule+0x308/0x770 [43142.048226] [<ffffffffc0433534>] btrfs_clean_one_deleted_snapshot+0xb4/0x100 [btrfs] [43142.048240] [<ffffffffc0429fbd>] cleaner_kthread+0x15d/0x1c0 [btrfs] [43142.048259] [<ffffffffc0429e60>] ? btrfs_destroy_pinned_extent+0x130/0x130 [btrfs] [43142.048262] [<ffffffffacaa3e58>] kthread+0xd8/0xf0 [43142.048268] [<ffffffffad29a25f>] ret_from_fork+0x1f/0x40 [43142.048270] [<ffffffffacaa3d80>] ? kthread_create_on_node+0x1e0/0x1e0 [43142.048295] INFO: task smbd:9182 blocked for more than 120 seconds. [43142.048297] Not tainted 4.8.0-28-generic #30-Ubuntu [43142.048298] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43142.048299] smbd D ffff945e06f4fd18 0 9182 1302 0x00000000 [43142.048301] ffff945e06f4fd18 00ff945e77494000 ffff945deac0a700 ffff945e72400d00 [43142.048303] ffff945e6e534f88 ffff945e06f50000 ffff945e777bb1f0 ffff945e777bb000 [43142.048305] ffff945e777bb1f0 0000000000000001 ffff945e06f4fd30 ffffffffad295845 [43142.048307] Call Trace: [43142.048308] [<ffffffffad295845>] schedule+0x35/0x80 [43142.048322] [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [43142.048323] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43142.048336] [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs] [43142.048349] [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs] [43142.048362] [<ffffffffc04406b7>] btrfs_setattr+0x1e7/0x360 [btrfs] [43142.048371] [<ffffffffacc5204c>] notify_change+0x30c/0x480 [43142.048377] [<ffffffffacc2f433>] do_truncate+0x73/0xc0 [43142.048379] [<ffffffffacc302b9>] do_sys_ftruncate.constprop.13+0x119/0x180 [43142.048380] [<ffffffffacc304be>] SyS_ftruncate+0xe/0x10 [43142.048382] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43142.048386] INFO: task smbd:9795 blocked for more than 120 seconds. [43142.048388] Not tainted 4.8.0-28-generic #30-Ubuntu [43142.048389] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43142.048390] smbd D ffff945d630dbc78 0 9795 1302 0x00000000 [43142.048392] ffff945d630dbc78 00ff945e77494000 ffff945e6fc76800 ffff945deac0a700 [43142.048394] ffff945e6e5ae2c8 ffff945d630dc000 ffff945e705549f0 ffff945e70554800 [43142.048396] ffff945e705549f0 0000000000000001 ffff945d630dbc90 ffffffffad295845 [43142.048398] Call Trace: [43142.048399] [<ffffffffad295845>] schedule+0x35/0x80 [43142.048412] [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [43142.048413] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43142.048426] [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs] [43142.048439] [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs] [43142.048455] [<ffffffffc04445ed>] btrfs_mknod+0x4d/0x200 [btrfs] [43142.048459] [<ffffffffacc4002b>] vfs_mknod+0x14b/0x1e0 [43142.048465] [<ffffffffad228a7a>] unix_bind+0x31a/0x3a0 [43142.048479] [<ffffffffad15fe42>] SYSC_bind+0xd2/0x110 [43142.048481] [<ffffffffacc46c96>] ? SyS_fcntl+0x3e6/0x4e0 [43142.048489] [<ffffffffad160ace>] SyS_bind+0xe/0x10 [43142.048491] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43142.048493] INFO: task smbd:9796 blocked for more than 120 seconds. [43142.048508] Not tainted 4.8.0-28-generic #30-Ubuntu [43142.048510] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43142.048511] smbd D ffff945d6275fd88 0 9796 1302 0x00000000 [43142.048513] ffff945d6275fd88 0000000000000000 ffff945e78230d00 ffff945deac0c100 [43142.048515] ffff945d6275fd80 ffff945d62760000 ffff945e6e2939d8 ffff945e6e2939f0 [43142.048517] ffff945e6e2939e0 ffff945e6e2939d8 ffff945d6275fda0 ffffffffad295845 [43142.048519] Call Trace: [43142.048521] [<ffffffffad295845>] schedule+0x35/0x80 [43142.048522] [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0 [43142.048529] [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30 [43142.048531] [<ffffffffad297d2d>] down_write+0x2d/0x40 [43142.048532] [<ffffffffacc4413a>] do_unlinkat+0x1aa/0x310 [43142.048533] [<ffffffffacc358b1>] ? __sb_end_write+0x21/0x30 [43142.048534] [<ffffffffacc44e16>] SyS_unlink+0x16/0x20 [43142.048536] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43262.872945] INFO: task btrfs-cleaner:238 blocked for more than 120 seconds. [43262.872951] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.872953] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.872954] btrfs-cleaner D ffff945e6e52bd00 0 238 2 0x00000000 [43262.872961] ffff945e6e52bd00 00ff945e6e52bcd8 ffffffffad80d540 ffff945e6fc70000 [43262.872964] 0000000000000046 ffff945e6e52c000 ffff945e6ff7b9f0 ffff945e6ff7b800 [43262.872966] ffff945e6ff7b9f0 0000000000000001 ffff945e6e52bd18 ffffffffad295845 [43262.872968] Call Trace: [43262.872977] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873018] [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [43262.873022] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43262.873035] [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs] [43262.873048] [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs] [43262.873059] [<ffffffffc041ad4f>] btrfs_drop_snapshot+0x7f/0x850 [btrfs] [43262.873060] [<ffffffffad2953a8>] ? __schedule+0x308/0x770 [43262.873073] [<ffffffffc0433534>] btrfs_clean_one_deleted_snapshot+0xb4/0x100 [btrfs] [43262.873085] [<ffffffffc0429fbd>] cleaner_kthread+0x15d/0x1c0 [btrfs] [43262.873097] [<ffffffffc0429e60>] ? btrfs_destroy_pinned_extent+0x130/0x130 [btrfs] [43262.873100] [<ffffffffacaa3e58>] kthread+0xd8/0xf0 [43262.873102] [<ffffffffad29a25f>] ret_from_fork+0x1f/0x40 [43262.873103] [<ffffffffacaa3d80>] ? kthread_create_on_node+0x1e0/0x1e0 [43262.873115] INFO: task nmbd:1181 blocked for more than 120 seconds. [43262.873116] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.873117] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.873118] nmbd D ffff945e763efbc8 0 1181 1 0x00000000 [43262.873121] ffff945e763efbc8 0000000000170fff ffff945e78230d00 ffff945e705a8000 [43262.873123] ffff945e763efc58 ffff945e763f0000 ffff945dec94a69c ffff945dec94a680 [43262.873125] ffff945e07a4ef60 0000000000170000 ffff945e763efbe0 ffffffffad295845 [43262.873126] Call Trace: [43262.873128] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873142] [<ffffffffc0454dd0>] lock_extent_bits+0x190/0x1e0 [btrfs] [43262.873144] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43262.873157] [<ffffffffc044793b>] lock_and_cleanup_extent_if_need+0xfb/0x280 [btrfs] [43262.873171] [<ffffffffc0448d02>] __btrfs_buffered_write+0x1d2/0x710 [btrfs] [43262.873173] [<ffffffffacc433c4>] ? putname+0x54/0x60 [43262.873187] [<ffffffffc044c890>] btrfs_file_write_iter+0x170/0x4d0 [btrfs] [43262.873190] [<ffffffffacc32655>] new_sync_write+0xd5/0x130 [43262.873191] [<ffffffffacc326d6>] __vfs_write+0x26/0x40 [43262.873193] [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0 [43262.873194] [<ffffffffacc34255>] SyS_write+0x55/0xc0 [43262.873196] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43262.873248] INFO: task lightdm-gtk-gre:1356 blocked for more than 120 seconds. [43262.873250] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.873251] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.873252] lightdm-gtk-gre D ffff945e72957a88 0 1356 1350 0x00000000 [43262.873254] ffff945e72957a88 00ff945e723a7600 ffff945e78230d00 ffff945e771c0000 [43262.873256] ffff945e72957a78 ffff945e72958000 ffff945e7fd19200 7fffffffffffffff [43262.873258] ffffffffad296030 ffff945e72957be8 ffff945e72957aa0 ffffffffad295845 [43262.873260] Call Trace: [43262.873262] [<ffffffffad296030>] ? bit_wait+0x60/0x60 [43262.873263] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873264] [<ffffffffad299098>] schedule_timeout+0x2c8/0x440 [43262.873266] [<ffffffffacab7d13>] ? update_curr+0xf3/0x170 [43262.873267] [<ffffffffacab6e35>] ? pick_next_entity+0x85/0x130 [43262.873280] [<ffffffffaca63e6e>] ? kvm_clock_get_cycles+0x1e/0x20 [43262.873287] [<ffffffffacafc651>] ? ktime_get+0x41/0xb0 [43262.873289] [<ffffffffad296030>] ? bit_wait+0x60/0x60 [43262.873290] [<ffffffffad295034>] io_schedule_timeout+0xa4/0x110 [43262.873291] [<ffffffffad29604b>] bit_wait_io+0x1b/0x70 [43262.873292] [<ffffffffad295de0>] __wait_on_bit_lock+0x50/0xa0 [43262.873295] [<ffffffffacb9fa7b>] __lock_page+0xcb/0xf0 [43262.873296] [<ffffffffacac7190>] ? autoremove_wake_function+0x40/0x40 [43262.873297] [<ffffffffacba109f>] pagecache_get_page+0x19f/0x2a0 [43262.873311] [<ffffffffc04483c6>] prepare_pages+0x96/0x240 [btrfs] [43262.873325] [<ffffffffc0448d29>] __btrfs_buffered_write+0x1f9/0x710 [btrfs] [43262.873329] [<ffffffffad15f69d>] ? sock_recvmsg+0x3d/0x50 [43262.873343] [<ffffffffc044c890>] btrfs_file_write_iter+0x170/0x4d0 [btrfs] [43262.873344] [<ffffffffacc32655>] new_sync_write+0xd5/0x130 [43262.873346] [<ffffffffacc326d6>] __vfs_write+0x26/0x40 [43262.873347] [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0 [43262.873348] [<ffffffffacc34255>] SyS_write+0x55/0xc0 [43262.873350] [<ffffffffacc47f23>] ? SyS_ioctl+0x63/0x90 [43262.873351] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43262.873356] INFO: task miniserv.pl:1401 blocked for more than 120 seconds. [43262.873357] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.873358] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.873359] miniserv.pl D ffff945e70eebc10 0 1401 1 0x00000000 [43262.873362] ffff945e70eebc10 0000000000000001 ffff945e78230d00 ffff945e72406800 [43262.873364] 00000000024200ca ffff945e70eec000 ffff945e705549f0 ffff945e70554800 [43262.873366] ffff945e705549f0 0000000000000001 ffff945e70eebc28 ffffffffad295845 [43262.873367] Call Trace: [43262.873369] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873381] [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs] [43262.873383] [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60 [43262.873396] [<ffffffffc04342c2>] start_transaction+0x272/0x4a0 [btrfs] [43262.873408] [<ffffffffc0434547>] btrfs_join_transaction+0x17/0x20 [btrfs] [43262.873422] [<ffffffffc043aa0c>] btrfs_dirty_inode+0x3c/0xd0 [btrfs] [43262.873435] [<ffffffffc043ab1f>] btrfs_update_time+0x7f/0xc0 [btrfs] [43262.873436] [<ffffffffacc519e8>] touch_atime+0xa8/0xd0 [43262.873438] [<ffffffffacba3219>] generic_file_read_iter+0x6d9/0x870 [43262.873441] [<ffffffffacbdb1f6>] ? handle_mm_fault+0x8a6/0x13c0 [43262.873443] [<ffffffffacc324f2>] new_sync_read+0xd2/0x120 [43262.873444] [<ffffffffacc32566>] __vfs_read+0x26/0x40 [43262.873446] [<ffffffffacc32cb6>] vfs_read+0x96/0x130 [43262.873447] [<ffffffffacc34195>] SyS_read+0x55/0xc0 [43262.873452] [<ffffffffaca6b6f7>] ? trace_do_page_fault+0x37/0xd0 [43262.873454] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43262.873456] INFO: task lpqd:1476 blocked for more than 120 seconds. [43262.873457] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.873458] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.873459] lpqd D ffff945e71067c98 0 1476 1302 0x00000000 [43262.873475] ffff945e71067c98 00ffffffacc3e9d7 ffffffffad80d540 ffff945e709f4100 [43262.873477] 00000002fefefeff ffff945e71068000 ffff945dec94a8d8 ffff945dec94a8f0 [43262.873479] ffff945dec94a8e0 ffff945dec94a8d8 ffff945e71067cb0 ffffffffad295845 [43262.873481] Call Trace: [43262.873483] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873484] [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0 [43262.873487] [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30 [43262.873488] [<ffffffffad297d2d>] down_write+0x2d/0x40 [43262.873502] [<ffffffffc044c782>] btrfs_file_write_iter+0x62/0x4d0 [btrfs] [43262.873504] [<ffffffffacc3804e>] ? inode_get_bytes+0x1e/0x50 [43262.873505] [<ffffffffacc32655>] new_sync_write+0xd5/0x130 [43262.873507] [<ffffffffacc326d6>] __vfs_write+0x26/0x40 [43262.873508] [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0 [43262.873509] [<ffffffffacc34255>] SyS_write+0x55/0xc0 [43262.873511] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [43262.873515] INFO: task smbd:2293 blocked for more than 120 seconds. [43262.873516] Not tainted 4.8.0-28-generic #30-Ubuntu [43262.873517] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [43262.873518] smbd D ffff945de78bfc98 0 2293 1302 0x00000000 [43262.873520] ffff945de78bfc98 00ffffffacc3e9d7 ffff945e6fc76800 ffff945e72402700 [43262.873522] 00000002fefefeff ffff945de78c0000 ffff945dec94a8d8 ffff945dec94a8f0 [43262.873524] ffff945dec94a8e0 ffff945dec94a8d8 ffff945de78bfcb0 ffffffffad295845 [43262.873526] Call Trace: [43262.873527] [<ffffffffad295845>] schedule+0x35/0x80 [43262.873528] [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0 [43262.873530] [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30 [43262.873531] [<ffffffffad297d2d>] down_write+0x2d/0x40 [43262.873545] [<ffffffffc044c782>] btrfs_file_write_iter+0x62/0x4d0 [btrfs] [43262.873546] [<ffffffffacc3804e>] ? inode_get_bytes+0x1e/0x50 [43262.873552] [<ffffffffacc32655>] new_sync_write+0xd5/0x130 [43262.873553] [<ffffffffacc326d6>] __vfs_write+0x26/0x40 [43262.873554] [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0 [43262.873556] [<ffffffffacc34255>] SyS_write+0x55/0xc0 [43262.873557] [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
-- 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: Confirmed 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 : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
