dmesg/bfq/jb

INFO: task khugepaged:42 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
khugepaged      D ffff88007add3868     0    42      2 0x00000000
 ffff88007b341cc8 0000000000000046 ffffffff813df7d6 ffff88007b341ce0
 ffffffff813df850 ffff88002dcd6b00 ffff88007b341fd8 ffff88007b341fd8
 ffff88007aef9d38 ffff88007b341fd8 ffff880000000001 ffff88007b341fd8
Call Trace:
 [<ffffffff813df7d6>] ? schedule+0x576/0xe10
 [<ffffffff813df850>] ? schedule+0x5f0/0xe10
 [<ffffffff81078d1d>] ? sched_clock_local+0x1d/0x90
 [<ffffffff810478d8>] ? try_preempt+0x28/0x110
 [<ffffffff8105fcf8>] ? lock_timer_base.isra.30+0x38/0x70
 [<ffffffff8105fdc6>] ? try_to_del_timer_sync+0x96/0x150
 [<ffffffff813e253d>] rwsem_down_failed_common+0xbd/0x150
 [<ffffffff813e2605>] rwsem_down_read_failed+0x15/0x17
 [<ffffffff8121a2b4>] call_rwsem_down_read_failed+0x14/0x30
 [<ffffffff813e1c17>] ? down_read+0x17/0x20
 [<ffffffff81137fdf>] khugepaged+0x2cf/0x13a0
 [<ffffffff81072480>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffff81137d10>] ? khugepaged_defrag_store+0x70/0x70
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13
INFO: task jbd2/sdb2-8:658 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/sdb2-8     D 00000b38f0b11e88     0   658      2 0x00000000
 ffff8800786b7af0 0000000000000046 ffff880075b9eb00 ffffffff81210777
 ffff88007b1c0d90 ffff88007b114800 ffff8800786b7fd8 ffff8800786b7fd8
 ffff88007aa96d78 ffff8800786b7fd8 ffff880000000000 ffff8800786b7fd8
Call Trace:
 [<ffffffff81210777>] ? kobject_put+0x27/0x60
 [<ffffffff811ee60a>] ? queue_unplugged+0x5a/0x110
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff8107c92d>] ? ktime_get_ts+0xad/0xe0
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff810e8cd0>] ? __lock_page+0x70/0x70
 [<ffffffff813e00ff>] io_schedule+0x8f/0xd0
 [<ffffffff810e8cde>] sleep_on_page+0xe/0x20
 [<ffffffff813e0927>] __wait_on_bit+0x57/0x80
 [<ffffffff810e8ec8>] wait_on_page_bit+0x78/0x80
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffff810e903c>] filemap_fdatawait_range+0x10c/0x1a0
 [<ffffffff810e90fa>] filemap_fdatawait+0x2a/0x30
 [<ffffffffa009d56a>] jbd2_journal_commit_transaction+0x8aa/0x18a0 [jbd2]
 [<ffffffffa00a284f>] kjournald2+0xbf/0x210 [jbd2]
 [<ffffffff81072480>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffffa00a2790>] ? commit_timeout+0x10/0x10 [jbd2]
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13
INFO: task ktorrent:28250 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ktorrent        D 0000000000000002     0 28250      1 0x00000000
 ffff880071927b48 0000000000000086 000000000002d68f 0000000000000000
 ffff880071927b88 ffff880071927e44 ffff880071927fd8 ffff880071927fd8
 ffff8800719fb148 ffff880071927fd8 ffff880000000000 ffff880071927fd8
Call Trace:
 [<ffffffff810759e0>] ? update_rmtp+0x70/0x70
 [<ffffffff81076814>] ? hrtimer_start_range_ns+0x14/0x20
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff8107c92d>] ? ktime_get_ts+0xad/0xe0
 [<ffffffff810e8cd0>] ? __lock_page+0x70/0x70
 [<ffffffff813e00ff>] io_schedule+0x8f/0xd0
 [<ffffffff810e8cde>] sleep_on_page+0xe/0x20
 [<ffffffff813e0927>] __wait_on_bit+0x57/0x80
 [<ffffffff810e8ec8>] wait_on_page_bit+0x78/0x80
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffffa00c854a>] ext4_page_mkwrite+0x1da/0x200 [ext4]
 [<ffffffff8110af25>] __do_fault+0xd5/0x580
 [<ffffffff8121275b>] ? prio_tree_insert+0x12b/0x290
 [<ffffffff8110e027>] handle_pte_fault+0xf7/0xb10
 [<ffffffff813e159e>] ? mutex_unlock+0xe/0x10
 [<ffffffff81113268>] ? vma_link+0x88/0xe0
 [<ffffffff81110004>] handle_mm_fault+0x1b4/0x350
 [<ffffffff81038704>] do_page_fault+0x154/0x4e0
 [<ffffffff81114eff>] ? do_mmap_pgoff+0x35f/0x380
 [<ffffffff81065edd>] ? do_sigaction+0x12d/0x1f0
 [<ffffffff810662cd>] ? sys_rt_sigaction+0xad/0xc0
 [<ffffffff813e3205>] page_fault+0x25/0x30
INFO: task ktorrent:28599 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ktorrent        D ffff88007add3868     0 28599      1 0x00000000
 ffff88002e675e38 0000000000000086 0000000000000000 0000000000000000
 0000000000000000 0000000000000000 ffff88002e675fd8 ffff88002e675fd8
 ffff880076e13ea8 ffff88002e675fd8 ffff880000000000 ffff88002e675fd8
Call Trace:
 [<ffffffff81159d50>] ? __pollwait+0xf0/0xf0
 [<ffffffff81312303>] ? release_sock+0xe3/0x110
 [<ffffffff81148dc1>] ? fget_light+0x91/0x100
 [<ffffffff813e253d>] rwsem_down_failed_common+0xbd/0x150
 [<ffffffff813e25e3>] rwsem_down_write_failed+0x13/0x20
 [<ffffffff8121a2e3>] call_rwsem_down_write_failed+0x13/0x20
 [<ffffffff813e1c45>] ? down_write+0x25/0x27
 [<ffffffff81116560>] sys_mprotect+0xe0/0x250
 [<ffffffff813e37c2>] system_call_fastpath+0x16/0x1b
INFO: task flush-8:16:28605 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
flush-8:16      D ffff88002dca2900     0 28605      2 0x00000000
 ffff880074793610 0000000000000046 0000000000000160 ffff88007be53400
 ffff88007be53400 ffff88007ac5f780 ffff880074793fd8 ffff880074793fd8
 ffff88002dcd23e8 ffff880074793fd8 ffff880000000000 ffff880074793fd8
Call Trace:
 [<ffffffff8120bc98>] ? bfq_dispatch_requests+0x3c8/0xa80
 [<ffffffff810e8bad>] ? find_get_page+0x6d/0xb0
 [<ffffffff81072270>] ? prepare_to_wait+0x60/0x90
 [<ffffffffa009bf15>] do_get_write_access+0x315/0x670 [jbd2]
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffff81175c00>] ? __find_get_block_slow.isra.16+0xc0/0x140
 [<ffffffffa009c470>] jbd2_journal_get_write_access+0x30/0x50 [jbd2]
 [<ffffffffa00e99e8>] __ext4_journal_get_write_access+0x38/0x80 [ext4]
 [<ffffffffa00ec379>] ext4_mb_mark_diskspace_used+0x79/0x4d0 [ext4]
 [<ffffffffa00f193f>] ext4_mb_new_blocks+0x2df/0x590 [ext4]
 [<ffffffffa00e7b07>] ext4_ext_map_blocks+0x857/0x17a0 [ext4]
 [<ffffffff812142b3>] ? radix_tree_gang_lookup_tag_slot+0x93/0xd0
 [<ffffffff810f47c5>] ? pagevec_lookup_tag+0x25/0x40
 [<ffffffffa00c3e65>] ext4_map_blocks+0x1b5/0x220 [ext4]
 [<ffffffffa00c6f1c>] mpage_da_map_and_submit+0xac/0x410 [ext4]
 [<ffffffffa00c7b20>] ext4_da_writepages+0x380/0x690 [ext4]
 [<ffffffff810f3cb4>] do_writepages+0x24/0x40
 [<ffffffff8116d41e>] writeback_single_inode+0xfe/0x270
 [<ffffffff8116d82b>] writeback_sb_inodes+0xeb/0x1c0
 [<ffffffff8116e3e3>] writeback_inodes_wb+0x83/0x170
 [<ffffffff8116e9ab>] wb_writeback+0x4db/0x530
 [<ffffffff813df850>] ? schedule+0x5f0/0xe10
 [<ffffffff8116ead0>] wb_check_old_data_flush+0xd0/0xe0
 [<ffffffff8116ec75>] wb_do_writeback+0x195/0x280
 [<ffffffff813e0663>] ? schedule_timeout+0x173/0x380
 [<ffffffff8105f210>] ? init_timer_deferrable_key+0x30/0x30
 [<ffffffff8116edec>] bdi_writeback_thread+0x8c/0x320
 [<ffffffff8116ed60>] ? wb_do_writeback+0x280/0x280
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13
INFO: task khugepaged:42 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
khugepaged      D ffff88007add3868     0    42      2 0x00000000
 ffff88007b341cc8 0000000000000046 ffffffff813df7d6 ffff88007b341ce0
 ffffffff813df850 ffff88002dcd6b00 ffff88007b341fd8 ffff88007b341fd8
 ffff88007aef9d38 ffff88007b341fd8 ffff880000000001 ffff88007b341fd8
Call Trace:
 [<ffffffff813df7d6>] ? schedule+0x576/0xe10
 [<ffffffff813df850>] ? schedule+0x5f0/0xe10
 [<ffffffff81078d1d>] ? sched_clock_local+0x1d/0x90
 [<ffffffff810478d8>] ? try_preempt+0x28/0x110
 [<ffffffff8105fcf8>] ? lock_timer_base.isra.30+0x38/0x70
 [<ffffffff8105fdc6>] ? try_to_del_timer_sync+0x96/0x150
 [<ffffffff813e253d>] rwsem_down_failed_common+0xbd/0x150
 [<ffffffff813e2605>] rwsem_down_read_failed+0x15/0x17
 [<ffffffff8121a2b4>] call_rwsem_down_read_failed+0x14/0x30
 [<ffffffff813e1c17>] ? down_read+0x17/0x20
 [<ffffffff81137fdf>] khugepaged+0x2cf/0x13a0
 [<ffffffff81072480>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffff81137d10>] ? khugepaged_defrag_store+0x70/0x70
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13
INFO: task jbd2/sdb2-8:658 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/sdb2-8     D 00000b38f0b11e88     0   658      2 0x00000000
 ffff8800786b7af0 0000000000000046 ffff880075b9eb00 ffffffff81210777
 ffff88007b1c0d90 ffff88007b114800 ffff8800786b7fd8 ffff8800786b7fd8
 ffff88007aa96d78 ffff8800786b7fd8 ffff880000000000 ffff8800786b7fd8
Call Trace:
 [<ffffffff81210777>] ? kobject_put+0x27/0x60
 [<ffffffff811ee60a>] ? queue_unplugged+0x5a/0x110
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff8107c92d>] ? ktime_get_ts+0xad/0xe0
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff810e8cd0>] ? __lock_page+0x70/0x70
 [<ffffffff813e00ff>] io_schedule+0x8f/0xd0
 [<ffffffff810e8cde>] sleep_on_page+0xe/0x20
 [<ffffffff813e0927>] __wait_on_bit+0x57/0x80
 [<ffffffff810e8ec8>] wait_on_page_bit+0x78/0x80
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffff810e903c>] filemap_fdatawait_range+0x10c/0x1a0
 [<ffffffff810e90fa>] filemap_fdatawait+0x2a/0x30
 [<ffffffffa009d56a>] jbd2_journal_commit_transaction+0x8aa/0x18a0 [jbd2]
 [<ffffffffa00a284f>] kjournald2+0xbf/0x210 [jbd2]
 [<ffffffff81072480>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffffa00a2790>] ? commit_timeout+0x10/0x10 [jbd2]
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13
INFO: task ktorrent:28250 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ktorrent        D 0000000000000002     0 28250      1 0x00000000
 ffff880071927b48 0000000000000086 000000000002d68f 0000000000000000
 ffff880071927b88 ffff880071927e44 ffff880071927fd8 ffff880071927fd8
 ffff8800719fb148 ffff880071927fd8 ffff880000000000 ffff880071927fd8
Call Trace:
 [<ffffffff810759e0>] ? update_rmtp+0x70/0x70
 [<ffffffff81076814>] ? hrtimer_start_range_ns+0x14/0x20
 [<ffffffff81012cb9>] ? read_tsc+0x9/0x20
 [<ffffffff8107c92d>] ? ktime_get_ts+0xad/0xe0
 [<ffffffff810e8cd0>] ? __lock_page+0x70/0x70
 [<ffffffff813e00ff>] io_schedule+0x8f/0xd0
 [<ffffffff810e8cde>] sleep_on_page+0xe/0x20
 [<ffffffff813e0927>] __wait_on_bit+0x57/0x80
 [<ffffffff810e8ec8>] wait_on_page_bit+0x78/0x80
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffffa00c854a>] ext4_page_mkwrite+0x1da/0x200 [ext4]
 [<ffffffff8110af25>] __do_fault+0xd5/0x580
 [<ffffffff8121275b>] ? prio_tree_insert+0x12b/0x290
 [<ffffffff8110e027>] handle_pte_fault+0xf7/0xb10
 [<ffffffff813e159e>] ? mutex_unlock+0xe/0x10
 [<ffffffff81113268>] ? vma_link+0x88/0xe0
 [<ffffffff81110004>] handle_mm_fault+0x1b4/0x350
 [<ffffffff81038704>] do_page_fault+0x154/0x4e0
 [<ffffffff81114eff>] ? do_mmap_pgoff+0x35f/0x380
 [<ffffffff81065edd>] ? do_sigaction+0x12d/0x1f0
 [<ffffffff810662cd>] ? sys_rt_sigaction+0xad/0xc0
 [<ffffffff813e3205>] page_fault+0x25/0x30
INFO: task ktorrent:28599 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ktorrent        D ffff88007add3868     0 28599      1 0x00000000
 ffff88002e675e38 0000000000000086 0000000000000000 0000000000000000
 0000000000000000 0000000000000000 ffff88002e675fd8 ffff88002e675fd8
 ffff880076e13ea8 ffff88002e675fd8 ffff880000000000 ffff88002e675fd8
Call Trace:
 [<ffffffff81159d50>] ? __pollwait+0xf0/0xf0
 [<ffffffff81312303>] ? release_sock+0xe3/0x110
 [<ffffffff81148dc1>] ? fget_light+0x91/0x100
 [<ffffffff813e253d>] rwsem_down_failed_common+0xbd/0x150
 [<ffffffff813e25e3>] rwsem_down_write_failed+0x13/0x20
 [<ffffffff8121a2e3>] call_rwsem_down_write_failed+0x13/0x20
 [<ffffffff813e1c45>] ? down_write+0x25/0x27
 [<ffffffff81116560>] sys_mprotect+0xe0/0x250
 [<ffffffff813e37c2>] system_call_fastpath+0x16/0x1b
INFO: task flush-8:16:28605 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
flush-8:16      D ffff88002dca2900     0 28605      2 0x00000000
 ffff880074793610 0000000000000046 0000000000000160 ffff88007be53400
 ffff88007be53400 ffff88007ac5f780 ffff880074793fd8 ffff880074793fd8
 ffff88002dcd23e8 ffff880074793fd8 ffff880000000000 ffff880074793fd8
Call Trace:
 [<ffffffff8120bc98>] ? bfq_dispatch_requests+0x3c8/0xa80
 [<ffffffff810e8bad>] ? find_get_page+0x6d/0xb0
 [<ffffffff81072270>] ? prepare_to_wait+0x60/0x90
 [<ffffffffa009bf15>] do_get_write_access+0x315/0x670 [jbd2]
 [<ffffffff810724c0>] ? autoremove_wake_function+0x40/0x40
 [<ffffffff81175c00>] ? __find_get_block_slow.isra.16+0xc0/0x140
 [<ffffffffa009c470>] jbd2_journal_get_write_access+0x30/0x50 [jbd2]
 [<ffffffffa00e99e8>] __ext4_journal_get_write_access+0x38/0x80 [ext4]
 [<ffffffffa00ec379>] ext4_mb_mark_diskspace_used+0x79/0x4d0 [ext4]
 [<ffffffffa00f193f>] ext4_mb_new_blocks+0x2df/0x590 [ext4]
 [<ffffffffa00e7b07>] ext4_ext_map_blocks+0x857/0x17a0 [ext4]
 [<ffffffff812142b3>] ? radix_tree_gang_lookup_tag_slot+0x93/0xd0
 [<ffffffff810f47c5>] ? pagevec_lookup_tag+0x25/0x40
 [<ffffffffa00c3e65>] ext4_map_blocks+0x1b5/0x220 [ext4]
 [<ffffffffa00c6f1c>] mpage_da_map_and_submit+0xac/0x410 [ext4]
 [<ffffffffa00c7b20>] ext4_da_writepages+0x380/0x690 [ext4]
 [<ffffffff810f3cb4>] do_writepages+0x24/0x40
 [<ffffffff8116d41e>] writeback_single_inode+0xfe/0x270
 [<ffffffff8116d82b>] writeback_sb_inodes+0xeb/0x1c0
 [<ffffffff8116e3e3>] writeback_inodes_wb+0x83/0x170
 [<ffffffff8116e9ab>] wb_writeback+0x4db/0x530
 [<ffffffff813df850>] ? schedule+0x5f0/0xe10
 [<ffffffff8116ead0>] wb_check_old_data_flush+0xd0/0xe0
 [<ffffffff8116ec75>] wb_do_writeback+0x195/0x280
 [<ffffffff813e0663>] ? schedule_timeout+0x173/0x380
 [<ffffffff8105f210>] ? init_timer_deferrable_key+0x30/0x30
 [<ffffffff8116edec>] bdi_writeback_thread+0x8c/0x320
 [<ffffffff8116ed60>] ? wb_do_writeback+0x280/0x280
 [<ffffffff81071b5c>] kthread+0x8c/0xa0
 [<ffffffff8104988c>] ? schedule_tail+0x4c/0x100
 [<ffffffff813e48e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81071ad0>] ? kthread_worker_fn+0x190/0x190
 [<ffffffff813e48e0>] ? gs_change+0x13/0x13