[ 332.443352] usb 2-3: USB disconnect, address 4 [ 479.926182] INFO: task khubd:40 blocked for more than 120 seconds. [ 479.926190] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 479.926195] khubd D ffff8801b338bb58 0 40 2 0x00000000 [ 479.926640] [] out_of_line_wait_on_bit+0x69/0x74 [ 479.926645] [] ? sync_buffer+0x0/0x29 [ 479.926649] [] ? wake_bit_function+0x0/0x2c [ 479.926654] [] __wait_on_buffer+0x21/0x23 [ 479.926660] [] ext4_mb_init_cache+0x23b/0x522 [ 479.926666] [] ext4_mb_init_group+0x10a/0x29e [ 479.926671] [] ext4_mb_good_group+0x50/0xd3 [ 479.926677] [] ext4_mb_regular_allocator+0x12e/0x289 [ 479.926683] [] ext4_mb_new_blocks+0x17e/0x3a4 [ 479.926689] [] ? ext4_ext_find_extent+0x122/0x2b8 [ 479.926695] [] ext4_ext_map_blocks+0x1a52/0x1c40 [ 479.926701] [] ? release_pages+0x7a/0x17c [ 479.926707] [] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 479.926712] [] ? need_resched+0x1e/0x28 [ 479.926719] [] ext4_map_blocks+0x128/0x20e [ 479.926724] [] mpage_da_map_and_submit+0x8b/0x2db [ 479.926730] [] ext4_da_writepages+0x31b/0x4fb [ 479.926736] [] do_writepages+0x1c/0x25 [ 479.926742] [] writeback_single_inode+0xa0/0x1c1 [ 479.926747] [] writeback_sb_inodes+0x9f/0x118 [ 479.926753] [] writeback_inodes_wb+0x16a/0x17c [ 479.926758] [] wb_writeback+0x24f/0x36c [ 479.926763] [] wb_do_writeback+0x141/0x19a [ 479.926767] [] ? schedule_timeout+0x9f/0xbb [ 479.926772] [] bdi_writeback_thread+0x86/0x20d [ 479.926777] [] ? bdi_writeback_thread+0x0/0x20d [ 479.926783] [] kthread+0x7d/0x85 [ 479.926787] [] kernel_thread_helper+0x4/0x10 [ 479.926792] [] ? kthread+0x0/0x85 [ 479.926796] [] ? kernel_thread_helper+0x0/0x10 [ 479.926804] INFO: task cupsd:756 blocked for more than 120 seconds. [ 479.926807] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 479.926811] cupsd D 000000010000b91d 0 756 1 0x00000080 [ 479.926818] ffff8801aebd1a18 0000000000000086 ffff8801aebd19a8 ffffffffffffffff [ 479.926828] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801b17dae20 [ 479.926837] 0000000000013a00 ffff8801aebd1fd8 0000000000013a00 0000000000013a00 [ 479.926847] Call Trace: [ 479.926852] [] do_get_write_access+0x203/0x3d2 [ 479.926858] [] ? wake_bit_function+0x0/0x2c [ 479.926864] [] ? jbd_unlock_bh_journal_head+0x11/0x13 [ 479.926869] [] jbd2_journal_get_write_access+0x26/0x3d [ 479.926874] [] __ext4_journal_get_write_access+0x51/0x5f [ 479.926879] [] ext4_free_blocks+0x424/0x71f [ 479.926884] [] ? __brelse+0x10/0x2e [ 479.926890] [] ? __kmalloc+0xfe/0x110 [ 479.926895] [] ext4_ext_truncate+0x388/0x7e1 [ 479.926901] [] ext4_truncate+0x9f/0x50e [ 479.926907] [] ? __brelse+0x10/0x2e [ 479.926912] [] ? brelse+0xe/0x10 [ 479.926917] [] ? ext4_mark_inode_dirty+0x1c0/0x1f3 [ 479.926921] [] ? jbd2_journal_start+0xe/0x10 [ 479.926926] [] ext4_evict_inode+0x140/0x224 [ 479.926931] [] evict+0x22/0x93 [ 479.926934] [] iput+0x1e0/0x209 [ 479.926939] [] do_unlinkat+0x11c/0x16f [ 479.926944] [] ? path_put+0x1d/0x22 [ 479.926949] [] ? audit_syscall_entry+0x117/0x143 [ 479.926954] [] sys_unlink+0x11/0x13 [ 479.926958] [] system_call_fastpath+0x16/0x1b [ 479.926963] INFO: task X:758 blocked for more than 120 seconds. [ 479.926966] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 479.926969] X D 000000010000a089 0 758 654 0x00400084 [ 479.926977] ffff8801b11f17e8 0000000000000082 ffff8800bf42f490 0000000000000000 [ 479.926988] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801aebe2e20 [ 479.926997] 0000000000013a00 ffff8801b11f1fd8 0000000000013a00 0000000000013a00 [ 479.927007] Call Trace: [ 479.927012] [] schedule_timeout+0x22/0xbb [ 479.927018] [] ? try_to_wake_up+0x20f/0x221 [ 479.927023] [] ? need_resched+0x1e/0x28 [ 479.927027] [] wait_for_common+0x9e/0x115 [ 479.927032] [] ? default_wake_function+0x0/0xf [ 479.927037] [] wait_for_completion+0x18/0x1a [ 479.927042] [] flush_work+0x2b/0x34 [ 479.927047] [] ? wq_barrier_func+0x0/0xf [ 479.927051] [] flush_delayed_work+0x3d/0x41 [ 479.927057] [] tty_flush_to_ldisc+0x10/0x12 [ 479.927106] [] input_available_p+0x12/0x4f [ 479.927113] [] n_tty_poll+0x63/0x12c [ 479.927119] [] tty_poll+0x61/0x7b [ 479.927125] [] do_select+0x33d/0x51e [ 479.927132] [] ? __pollwait+0x0/0xc7 [ 479.927138] [] ? pollwake+0x0/0x4f [ 479.927143] [] ? pollwake+0x0/0x4f [ 479.927147] [] ? pollwake+0x0/0x4f [ 479.927152] [] ? pollwake+0x0/0x4f [ 479.927156] [] ? pollwake+0x0/0x4f [ 479.927161] [] ? pollwake+0x0/0x4f [ 479.927166] [] ? pollwake+0x0/0x4f [ 479.927172] [] ? pollwake+0x0/0x4f [ 479.927178] [] ? pollwake+0x0/0x4f [ 479.927185] [] core_sys_select+0x16f/0x20e [ 479.927200] [] ? nouveau_gem_ioctl_pushbuf+0x0/0xe24 [nouveau] [ 479.927206] [] ? __remove_hrtimer+0x78/0x85 [ 479.927213] [] ? timespec_add_safe+0x32/0x5f [ 479.927219] [] ? read_tsc+0x9/0x19 [ 479.927225] [] ? ktime_get_ts+0x80/0x89 [ 479.927231] [] sys_select+0x91/0xb9 [ 479.927237] [] system_call_fastpath+0x16/0x1b [ 479.927259] INFO: task yakuake:1215 blocked for more than 120 seconds. [ 479.927262] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 479.927266] yakuake D 00000001000098d7 0 1215 1 0x00000080 [ 479.927275] ffff88018f75f9e8 0000000000000086 ffff88018f75fa68 0000000200000000 [ 479.927287] 0000000000013a00 0000000000013a00 0000000000013a00 ffff88019172c530 [ 479.927298] 0000000000013a00 ffff88018f75ffd8 0000000000013a00 0000000000013a00 [ 479.927309] Call Trace: [ 479.927314] [] ? sync_page+0x0/0x48 [ 479.927319] [] io_schedule+0x42/0x5d [ 479.927323] [] sync_page+0x44/0x48 [ 479.927328] [] __wait_on_bit_lock+0x41/0x8a [ 479.927333] [] __lock_page+0x61/0x68 [ 479.927338] [] ? wake_bit_function+0x0/0x2c [ 479.927344] [] ? should_resched+0x9/0x29 [ 479.927349] [] lock_page+0x25/0x2a [ 479.927354] [] find_lock_page+0x2e/0x51 [ 479.927359] [] grab_cache_page_write_begin+0x3d/0x9e [ 479.927365] [] ? arch_local_irq_save+0x16/0x1c [ 479.927370] [] ext4_da_write_begin+0x141/0x218 [ 479.927375] [] ? jbd2_journal_stop+0x2de/0x2f0 [ 479.927381] [] generic_file_buffered_write+0xf5/0x221 [ 479.927386] [] ? _raw_spin_lock_irq+0x1a/0x1c [ 479.927392] [] __generic_file_aio_write+0x24a/0x27a [ 479.927398] [] ? need_resched+0x1e/0x28 [ 479.927404] [] generic_file_aio_write+0x56/0xa6 [ 479.927411] [] ext4_file_write+0xa5/0xb1 [ 479.927417] [] do_sync_write+0xc6/0x103 [ 479.927424] [] ? need_resched+0x1e/0x28 [ 479.927431] [] ? security_file_permission+0x29/0x2e [ 479.927436] [] vfs_write+0xa7/0xfa [ 479.927441] [] sys_write+0x45/0x69 [ 479.927446] [] system_call_fastpath+0x16/0x1b [ 599.634491] khubd D ffff8801b338bb58 0 40 2 0x00000000 [ 599.634504] ffff8801b338b9f0 0000000000000046 ffff8800bf48f340 0000000000000000 [ 599.634516] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801b3381710 [ 599.634528] 0000000000013a00 ffff8801b338bfd8 0000000000013a00 0000000000013a00 [ 599.634538] Call Trace: [ 599.634546] [] schedule_timeout+0x22/0xbb [ 599.634553] [] ? _raw_spin_unlock_irqrestore+0x12/0x14 [ 599.634560] [] ? need_resched+0x1e/0x28 [ 599.634565] [] wait_for_common+0x9e/0x115 [ 599.634572] [] ? default_wake_function+0x0/0xf [ 599.634578] [] ? wake_up_process+0x10/0x12 [ 599.634583] [] wait_for_completion+0x18/0x1a [ 599.634590] [] wait_on_work+0x108/0x142 [ 599.634596] [] ? wq_barrier_func+0x0/0xf [ 599.634602] [] __cancel_work_timer+0xbd/0xfc [ 599.634609] [] cancel_work_sync+0xb/0xd [ 599.634617] [] rt2x00lib_remove_dev+0x31/0xf4 [rt2x00lib] [ 599.634624] [] rt2x00usb_disconnect+0x29/0x99 [rt2x00usb] [ 599.634632] [] usb_unbind_interface+0x69/0x13c [ 599.634639] [] __device_release_driver+0x7e/0xd4 [ 599.634645] [] device_release_driver+0x1e/0x2b [ 599.634651] [] bus_remove_device+0x84/0x95 [ 599.634657] [] device_del+0x138/0x18a [ 599.634663] [] usb_disable_device+0x4c/0xf3 [ 599.634670] [] usb_disconnect+0x8e/0xf6 [ 599.634675] [] hub_thread+0x45a/0xd7f [ 599.634681] [] ? finish_task_switch+0x84/0xa3 [ 599.634688] [] ? autoremove_wake_function+0x0/0x34 [ 599.634695] [] ? hub_thread+0x0/0xd7f [ 599.634700] [] kthread+0x7d/0x85 [ 599.634706] [] kernel_thread_helper+0x4/0x10 [ 599.634712] [] ? kthread+0x0/0x85 [ 599.634718] [] ? kernel_thread_helper+0x0/0x10 [ 599.634727] INFO: task jbd2/sda1-8:275 blocked for more than 120 seconds. [ 599.634730] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 599.634734] jbd2/sda1-8 D 000000010000aea1 0 275 2 0x00000000 [ 599.634744] ffff8801ae967b40 0000000000000046 ffff8801ae967ab0 ffffffffffffffff [ 599.634754] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801ae862e20 [ 599.634765] 0000000000013a00 ffff8801ae967fd8 0000000000013a00 0000000000013a00 [ 599.634775] Call Trace: [ 599.634781] [] ? sync_page+0x0/0x48 [ 599.634786] [] ? sync_page+0x0/0x48 [ 599.634791] [] io_schedule+0x42/0x5d [ 599.634796] [] sync_page+0x44/0x48 [ 599.634801] [] __wait_on_bit+0x43/0x76 [ 599.634807] [] wait_on_page_bit+0x6d/0x74 [ 599.634814] [] ? wake_bit_function+0x0/0x2c [ 599.634820] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.634826] [] filemap_fdatawait_range+0x97/0x160 [ 599.634832] [] filemap_fdatawait+0x1c/0x1e [ 599.634839] [] jbd2_journal_commit_transaction+0xa3d/0x1411 [ 599.634846] [] ? autoremove_wake_function+0x0/0x34 [ 599.634852] [] kjournald2+0x138/0x363 [ 599.634857] [] ? autoremove_wake_function+0x0/0x34 [ 599.634863] [] ? kjournald2+0x0/0x363 [ 599.634869] [] kthread+0x7d/0x85 [ 599.634875] [] kernel_thread_helper+0x4/0x10 [ 599.634881] [] ? kthread+0x0/0x85 [ 599.634887] [] ? kernel_thread_helper+0x0/0x10 [ 599.634893] INFO: task flush-8:0:538 blocked for more than 120 seconds. [ 599.634897] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 599.634901] flush-8:0 D 000000010000978d 0 538 2 0x00000000 [ 599.634911] ffff8801b09ab510 0000000000000046 ffff8801b09ab490 ffffffffffffffff [ 599.634923] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801aebe5c40 [ 599.634936] 0000000000013a00 ffff8801b09abfd8 0000000000013a00 0000000000013a00 [ 599.634947] Call Trace: [ 599.634952] [] ? sync_buffer+0x0/0x29 [ 599.634957] [] ? sync_buffer+0x0/0x29 [ 599.634962] [] io_schedule+0x42/0x5d [ 599.634967] [] sync_buffer+0x25/0x29 [ 599.634971] [] __wait_on_bit+0x43/0x76 [ 599.634977] [] out_of_line_wait_on_bit+0x69/0x74 [ 599.634983] [] ? sync_buffer+0x0/0x29 [ 599.634989] [] ? wake_bit_function+0x0/0x2c [ 599.634995] [] __wait_on_buffer+0x21/0x23 [ 599.635003] [] ext4_mb_init_cache+0x23b/0x522 [ 599.635009] [] ext4_mb_init_group+0x10a/0x29e [ 599.635015] [] ext4_mb_good_group+0x50/0xd3 [ 599.635021] [] ext4_mb_regular_allocator+0x12e/0x289 [ 599.635027] [] ext4_mb_new_blocks+0x17e/0x3a4 [ 599.635033] [] ? ext4_ext_find_extent+0x122/0x2b8 [ 599.635039] [] ext4_ext_map_blocks+0x1a52/0x1c40 [ 599.635045] [] ? release_pages+0x7a/0x17c [ 599.635052] [] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 599.635059] [] ? need_resched+0x1e/0x28 [ 599.635065] [] ext4_map_blocks+0x128/0x20e [ 599.635072] [] mpage_da_map_and_submit+0x8b/0x2db [ 599.635078] [] ext4_da_writepages+0x31b/0x4fb [ 599.635084] [] do_writepages+0x1c/0x25 [ 599.635090] [] writeback_single_inode+0xa0/0x1c1 [ 599.635095] [] writeback_sb_inodes+0x9f/0x118 [ 599.635102] [] writeback_inodes_wb+0x16a/0x17c [ 599.635107] [] wb_writeback+0x24f/0x36c [ 599.635114] [] wb_do_writeback+0x141/0x19a [ 599.635119] [] ? schedule_timeout+0x9f/0xbb [ 599.635124] [] bdi_writeback_thread+0x86/0x20d [ 599.635130] [] ? bdi_writeback_thread+0x0/0x20d [ 599.635135] [] kthread+0x7d/0x85 [ 599.635141] [] kernel_thread_helper+0x4/0x10 [ 599.635147] [] ? kthread+0x0/0x85 [ 599.635152] [] ? kernel_thread_helper+0x0/0x10 [ 599.635160] INFO: task auditd:681 blocked for more than 120 seconds. [ 599.635164] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 599.635168] auditd D 00000001000141ba 0 681 1 0x00000000 [ 599.635177] ffff8801b177dcf8 0000000000000082 ffff8801b177dc68 ffffffff810c9f97 [ 599.635188] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801b1234530 [ 599.635199] 0000000000013a00 ffff8801b177dfd8 0000000000013a00 0000000000013a00 [ 599.635209] Call Trace: [ 599.635213] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.635219] [] ? sync_page+0x0/0x48 [ 599.635224] [] ? sync_page+0x0/0x48 [ 599.635229] [] io_schedule+0x42/0x5d [ 599.635234] [] sync_page+0x44/0x48 [ 599.635240] [] __wait_on_bit+0x43/0x76 [ 599.635247] [] wait_on_page_bit+0x6d/0x74 [ 599.635253] [] ? wake_bit_function+0x0/0x2c [ 599.635259] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.635265] [] filemap_fdatawait_range+0x97/0x160 [ 599.635271] [] ? do_writepages+0x1c/0x25 [ 599.635277] [] ? __filemap_fdatawrite_range+0x4b/0x4d [ 599.635283] [] filemap_write_and_wait_range+0x3e/0x51 [ 599.635289] [] vfs_fsync_range+0x36/0x79 [ 599.635295] [] vfs_fsync+0x17/0x19 [ 599.635301] [] do_fsync+0x29/0x3e [ 599.635306] [] sys_fsync+0xb/0xf [ 599.635311] [] system_call_fastpath+0x16/0x1b [ 809.996280] SysRq : Emergency Sync [ 810.187825] SysRq : Emergency Sync [ 810.706597] SysRq : Emergency Sync [ 811.057764] SysRq : Emergency Remount R/O [ 814.505597] SysRq : Emergency Remount R/O [ 814.545501] SysRq : Resetting [ 599.634807] [] wait_on_page_bit+0x6d/0x74 [ 599.634814] [] ? wake_bit_function+0x0/0x2c [ 599.634820] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.634826] [] filemap_fdatawait_range+0x97/0x160 [ 599.634832] [] filemap_fdatawait+0x1c/0x1e [ 599.634839] [] jbd2_journal_commit_transaction+0xa3d/0x1411 [ 599.634846] [] ? autoremove_wake_function+0x0/0x34 [ 599.634852] [] kjournald2+0x138/0x363 [ 599.634857] [] ? autoremove_wake_function+0x0/0x34 [ 599.634863] [] ? kjournald2+0x0/0x363 [ 599.634869] [] kthread+0x7d/0x85 [ 599.634875] [] kernel_thread_helper+0x4/0x10 [ 599.634881] [] ? kthread+0x0/0x85 [ 599.634887] [] ? kernel_thread_helper+0x0/0x10 [ 599.634893] INFO: task flush-8:0:538 blocked for more than 120 seconds. [ 599.634897] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 599.634901] flush-8:0 D 000000010000978d 0 538 2 0x00000000 [ 599.634911] ffff8801b09ab510 0000000000000046 ffff8801b09ab490 ffffffffffffffff [ 599.634923] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801aebe5c40 [ 599.634936] 0000000000013a00 ffff8801b09abfd8 0000000000013a00 0000000000013a00 [ 599.634947] Call Trace: [ 599.634952] [] ? sync_buffer+0x0/0x29 [ 599.634957] [] ? sync_buffer+0x0/0x29 [ 599.634962] [] io_schedule+0x42/0x5d [ 599.634967] [] sync_buffer+0x25/0x29 [ 599.634971] [] __wait_on_bit+0x43/0x76 [ 599.634977] [] out_of_line_wait_on_bit+0x69/0x74 [ 599.634983] [] ? sync_buffer+0x0/0x29 [ 599.634989] [] ? wake_bit_function+0x0/0x2c [ 599.634995] [] __wait_on_buffer+0x21/0x23 [ 599.635003] [] ext4_mb_init_cache+0x23b/0x522 [ 599.635009] [] ext4_mb_init_group+0x10a/0x29e [ 599.635015] [] ext4_mb_good_group+0x50/0xd3 [ 599.635021] [] ext4_mb_regular_allocator+0x12e/0x289 [ 599.635027] [] ext4_mb_new_blocks+0x17e/0x3a4 [ 599.635033] [] ? ext4_ext_find_extent+0x122/0x2b8 [ 599.635039] [] ext4_ext_map_blocks+0x1a52/0x1c40 [ 599.635045] [] ? release_pages+0x7a/0x17c [ 599.635052] [] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 599.635059] [] ? need_resched+0x1e/0x28 [ 599.635065] [] ext4_map_blocks+0x128/0x20e [ 599.635072] [] mpage_da_map_and_submit+0x8b/0x2db [ 599.635078] [] ext4_da_writepages+0x31b/0x4fb [ 599.635084] [] do_writepages+0x1c/0x25 [ 599.635090] [] writeback_single_inode+0xa0/0x1c1 [ 599.635095] [] writeback_sb_inodes+0x9f/0x118 [ 599.635102] [] writeback_inodes_wb+0x16a/0x17c [ 599.635107] [] wb_writeback+0x24f/0x36c [ 599.635114] [] wb_do_writeback+0x141/0x19a [ 599.635119] [] ? schedule_timeout+0x9f/0xbb [ 599.635124] [] bdi_writeback_thread+0x86/0x20d [ 599.635130] [] ? bdi_writeback_thread+0x0/0x20d [ 599.635135] [] kthread+0x7d/0x85 [ 599.635141] [] kernel_thread_helper+0x4/0x10 [ 599.635147] [] ? kthread+0x0/0x85 [ 599.635152] [] ? kernel_thread_helper+0x0/0x10 [ 599.635160] INFO: task auditd:681 blocked for more than 120 seconds. [ 599.635164] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 599.635168] auditd D 00000001000141ba 0 681 1 0x00000000 [ 599.635177] ffff8801b177dcf8 0000000000000082 ffff8801b177dc68 ffffffff810c9f97 [ 599.635188] 0000000000013a00 0000000000013a00 0000000000013a00 ffff8801b1234530 [ 599.635199] 0000000000013a00 ffff8801b177dfd8 0000000000013a00 0000000000013a00 [ 599.635209] Call Trace: [ 599.635213] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.635219] [] ? sync_page+0x0/0x48 [ 599.635224] [] ? sync_page+0x0/0x48 [ 599.635229] [] io_schedule+0x42/0x5d [ 599.635234] [] sync_page+0x44/0x48 [ 599.635240] [] __wait_on_bit+0x43/0x76 [ 599.635247] [] wait_on_page_bit+0x6d/0x74 [ 599.635253] [] ? wake_bit_function+0x0/0x2c [ 599.635259] [] ? pagevec_lookup_tag+0x20/0x29 [ 599.635265] [] filemap_fdatawait_range+0x97/0x160 [ 599.635271] [] ? do_writepages+0x1c/0x25 [ 599.635277] [] ? __filemap_fdatawrite_range+0x4b/0x4d [ 599.635283] [] filemap_write_and_wait_range+0x3e/0x51 [ 599.635289] [] vfs_fsync_range+0x36/0x79 [ 599.635295] [] vfs_fsync+0x17/0x19 [ 599.635301] [] do_fsync+0x29/0x3e [ 599.635306] [] sys_fsync+0xb/0xf [ 599.635311] [] system_call_fastpath+0x16/0x1b