Hi, I have a bunch of different Edimax and Asus WLAN sticks that are working very well in Linux 2.6.37.2 with the rt73usb driver. But there's a really annoying problem which causes the system to hang upon unplugging those sticks. First X server goes. Then you can SSH into the machine for a while, and then I/O operations will start to fail. Magic SysRQ can be used to safely sync/unmount/reboot the system. It's happening very frequently but there are times that nothing bad happens. As far as I can tell, it happens much more frequently if you were associated to an AP when you unplugged the stick but let me clear this after testing plug/unplug without associating at all. One thing that is quite sure is that after unplugging the stick, if you do nothing with your keyboard, the problem seems not to appear, e.g. I'm moving the mouse cursor for a while, no problem at all but once I hit pageup/pagedown to browse on the current konsole screenbuffer, it hangs! So the problem seems to be triggered after keyboard interrupts. I've set up a netconsole connection and got the dmesg for a while. There's no oops/warning/error but every 2 minutes another tasks generates a stacktrace because of 120 seconds timeout. I'm attaching the log. Thanks, -- Pardus Linux http://www.pardus.org.tr/eng
[ 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] [<ffffffff81483fc3>] out_of_line_wait_on_bit+0x69/0x74 [ 479.926645] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 479.926649] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 479.926654] [<ffffffff81127e3d>] __wait_on_buffer+0x21/0x23 [ 479.926660] [<ffffffff811a82cd>] ext4_mb_init_cache+0x23b/0x522 [ 479.926666] [<ffffffff811a86be>] ext4_mb_init_group+0x10a/0x29e [ 479.926671] [<ffffffff811a88a2>] ext4_mb_good_group+0x50/0xd3 [ 479.926677] [<ffffffff811a9da0>] ext4_mb_regular_allocator+0x12e/0x289 [ 479.926683] [<ffffffff811ab8a2>] ext4_mb_new_blocks+0x17e/0x3a4 [ 479.926689] [<ffffffff811a1847>] ? ext4_ext_find_extent+0x122/0x2b8 [ 479.926695] [<ffffffff811a447b>] ext4_ext_map_blocks+0x1a52/0x1c40 [ 479.926701] [<ffffffff810ca188>] ? release_pages+0x7a/0x17c [ 479.926707] [<ffffffff8124971c>] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 479.926712] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 479.926719] [<ffffffff8118850d>] ext4_map_blocks+0x128/0x20e [ 479.926724] [<ffffffff8118a223>] mpage_da_map_and_submit+0x8b/0x2db [ 479.926730] [<ffffffff8118ab9e>] ext4_da_writepages+0x31b/0x4fb [ 479.926736] [<ffffffff810c96d1>] do_writepages+0x1c/0x25 [ 479.926742] [<ffffffff81121cdf>] writeback_single_inode+0xa0/0x1c1 [ 479.926747] [<ffffffff81121fcc>] writeback_sb_inodes+0x9f/0x118 [ 479.926753] [<ffffffff81122a07>] writeback_inodes_wb+0x16a/0x17c [ 479.926758] [<ffffffff81122c68>] wb_writeback+0x24f/0x36c [ 479.926763] [<ffffffff81122ec6>] wb_do_writeback+0x141/0x19a [ 479.926767] [<ffffffff81483d79>] ? schedule_timeout+0x9f/0xbb [ 479.926772] [<ffffffff81122fa5>] bdi_writeback_thread+0x86/0x20d [ 479.926777] [<ffffffff81122f1f>] ? bdi_writeback_thread+0x0/0x20d [ 479.926783] [<ffffffff81067732>] kthread+0x7d/0x85 [ 479.926787] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 479.926792] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 479.926796] [<ffffffff8100a820>] ? 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] [<ffffffff811b9e4f>] do_get_write_access+0x203/0x3d2 [ 479.926858] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 479.926864] [<ffffffff811bfc23>] ? jbd_unlock_bh_journal_head+0x11/0x13 [ 479.926869] [<ffffffff811ba11d>] jbd2_journal_get_write_access+0x26/0x3d [ 479.926874] [<ffffffff811a5694>] __ext4_journal_get_write_access+0x51/0x5f [ 479.926879] [<ffffffff811abeec>] ext4_free_blocks+0x424/0x71f [ 479.926884] [<ffffffff811278ec>] ? __brelse+0x10/0x2e [ 479.926890] [<ffffffff810f9d14>] ? __kmalloc+0xfe/0x110 [ 479.926895] [<ffffffff811a49f1>] ext4_ext_truncate+0x388/0x7e1 [ 479.926901] [<ffffffff81188f49>] ext4_truncate+0x9f/0x50e [ 479.926907] [<ffffffff811278ec>] ? __brelse+0x10/0x2e [ 479.926912] [<ffffffff81184516>] ? brelse+0xe/0x10 [ 479.926917] [<ffffffff8118753f>] ? ext4_mark_inode_dirty+0x1c0/0x1f3 [ 479.926921] [<ffffffff811b8e07>] ? jbd2_journal_start+0xe/0x10 [ 479.926926] [<ffffffff8118aebe>] ext4_evict_inode+0x140/0x224 [ 479.926931] [<ffffffff81118442>] evict+0x22/0x93 [ 479.926934] [<ffffffff8111874d>] iput+0x1e0/0x209 [ 479.926939] [<ffffffff81110446>] do_unlinkat+0x11c/0x16f [ 479.926944] [<ffffffff8110e301>] ? path_put+0x1d/0x22 [ 479.926949] [<ffffffff81095f46>] ? audit_syscall_entry+0x117/0x143 [ 479.926954] [<ffffffff81111645>] sys_unlink+0x11/0x13 [ 479.926958] [<ffffffff81009a12>] 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] [<ffffffff81483cfc>] schedule_timeout+0x22/0xbb [ 479.927018] [<ffffffff81046a7b>] ? try_to_wake_up+0x20f/0x221 [ 479.927023] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 479.927027] [<ffffffff81483b11>] wait_for_common+0x9e/0x115 [ 479.927032] [<ffffffff81046a8d>] ? default_wake_function+0x0/0xf [ 479.927037] [<ffffffff81483c22>] wait_for_completion+0x18/0x1a [ 479.927042] [<ffffffff81062edd>] flush_work+0x2b/0x34 [ 479.927047] [<ffffffff8106273d>] ? wq_barrier_func+0x0/0xf [ 479.927051] [<ffffffff81063973>] flush_delayed_work+0x3d/0x41 [ 479.927057] [<ffffffff812db152>] tty_flush_to_ldisc+0x10/0x12 [ 479.927106] [<ffffffff812d6405>] input_available_p+0x12/0x4f [ 479.927113] [<ffffffff812d64a5>] n_tty_poll+0x63/0x12c [ 479.927119] [<ffffffff812d3aba>] tty_poll+0x61/0x7b [ 479.927125] [<ffffffff8111411c>] do_select+0x33d/0x51e [ 479.927132] [<ffffffff81113b04>] ? __pollwait+0x0/0xc7 [ 479.927138] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927143] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927147] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927152] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927156] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927161] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927166] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927172] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927178] [<ffffffff81113bcb>] ? pollwake+0x0/0x4f [ 479.927185] [<ffffffff8111446c>] core_sys_select+0x16f/0x20e [ 479.927200] [<ffffffffa01c950a>] ? nouveau_gem_ioctl_pushbuf+0x0/0xe24 [nouveau] [ 479.927206] [<ffffffff8106a7c6>] ? __remove_hrtimer+0x78/0x85 [ 479.927213] [<ffffffff810527bb>] ? timespec_add_safe+0x32/0x5f [ 479.927219] [<ffffffff8100fb66>] ? read_tsc+0x9/0x19 [ 479.927225] [<ffffffff8106f610>] ? ktime_get_ts+0x80/0x89 [ 479.927231] [<ffffffff8111459c>] sys_select+0x91/0xb9 [ 479.927237] [<ffffffff81009a12>] 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] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 479.927319] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 479.927323] [<ffffffff810c1581>] sync_page+0x44/0x48 [ 479.927328] [<ffffffff81483e27>] __wait_on_bit_lock+0x41/0x8a [ 479.927333] [<ffffffff810c14ff>] __lock_page+0x61/0x68 [ 479.927338] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 479.927344] [<ffffffff8103cc33>] ? should_resched+0x9/0x29 [ 479.927349] [<ffffffff810c152b>] lock_page+0x25/0x2a [ 479.927354] [<ffffffff810c1662>] find_lock_page+0x2e/0x51 [ 479.927359] [<ffffffff810c19a9>] grab_cache_page_write_begin+0x3d/0x9e [ 479.927365] [<ffffffff810f6d9c>] ? arch_local_irq_save+0x16/0x1c [ 479.927370] [<ffffffff81189972>] ext4_da_write_begin+0x141/0x218 [ 479.927375] [<ffffffff811b9431>] ? jbd2_journal_stop+0x2de/0x2f0 [ 479.927381] [<ffffffff810c0ca1>] generic_file_buffered_write+0xf5/0x221 [ 479.927386] [<ffffffff81484e72>] ? _raw_spin_lock_irq+0x1a/0x1c [ 479.927392] [<ffffffff810c234a>] __generic_file_aio_write+0x24a/0x27a [ 479.927398] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 479.927404] [<ffffffff810c23d0>] generic_file_aio_write+0x56/0xa6 [ 479.927411] [<ffffffff81181bc0>] ext4_file_write+0xa5/0xb1 [ 479.927417] [<ffffffff81105697>] do_sync_write+0xc6/0x103 [ 479.927424] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 479.927431] [<ffffffff812182e5>] ? security_file_permission+0x29/0x2e [ 479.927436] [<ffffffff81105d5b>] vfs_write+0xa7/0xfa [ 479.927441] [<ffffffff81105f53>] sys_write+0x45/0x69 [ 479.927446] [<ffffffff81009a12>] 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] [<ffffffff81483cfc>] schedule_timeout+0x22/0xbb [ 599.634553] [<ffffffff81484e86>] ? _raw_spin_unlock_irqrestore+0x12/0x14 [ 599.634560] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 599.634565] [<ffffffff81483b11>] wait_for_common+0x9e/0x115 [ 599.634572] [<ffffffff81046a8d>] ? default_wake_function+0x0/0xf [ 599.634578] [<ffffffff81046aac>] ? wake_up_process+0x10/0x12 [ 599.634583] [<ffffffff81483c22>] wait_for_completion+0x18/0x1a [ 599.634590] [<ffffffff81062d21>] wait_on_work+0x108/0x142 [ 599.634596] [<ffffffff8106273d>] ? wq_barrier_func+0x0/0xf [ 599.634602] [<ffffffff810635cb>] __cancel_work_timer+0xbd/0xfc [ 599.634609] [<ffffffff81063624>] cancel_work_sync+0xb/0xd [ 599.634617] [<ffffffffa01b4831>] rt2x00lib_remove_dev+0x31/0xf4 [rt2x00lib] [ 599.634624] [<ffffffffa007a0ae>] rt2x00usb_disconnect+0x29/0x99 [rt2x00usb] [ 599.634632] [<ffffffff8135a1b9>] usb_unbind_interface+0x69/0x13c [ 599.634639] [<ffffffff812ffdf3>] __device_release_driver+0x7e/0xd4 [ 599.634645] [<ffffffff812ffe67>] device_release_driver+0x1e/0x2b [ 599.634651] [<ffffffff812ffa23>] bus_remove_device+0x84/0x95 [ 599.634657] [<ffffffff812fd417>] device_del+0x138/0x18a [ 599.634663] [<ffffffff8135842e>] usb_disable_device+0x4c/0xf3 [ 599.634670] [<ffffffff813523e4>] usb_disconnect+0x8e/0xf6 [ 599.634675] [<ffffffff81353877>] hub_thread+0x45a/0xd7f [ 599.634681] [<ffffffff810405c6>] ? finish_task_switch+0x84/0xa3 [ 599.634688] [<ffffffff81067bc7>] ? autoremove_wake_function+0x0/0x34 [ 599.634695] [<ffffffff8135341d>] ? hub_thread+0x0/0xd7f [ 599.634700] [<ffffffff81067732>] kthread+0x7d/0x85 [ 599.634706] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 599.634712] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 599.634718] [<ffffffff8100a820>] ? 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] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.634786] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.634791] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 599.634796] [<ffffffff810c1581>] sync_page+0x44/0x48 [ 599.634801] [<ffffffff81483f27>] __wait_on_bit+0x43/0x76 [ 599.634807] [<ffffffff810c173b>] wait_on_page_bit+0x6d/0x74 [ 599.634814] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.634820] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.634826] [<ffffffff810c1d06>] filemap_fdatawait_range+0x97/0x160 [ 599.634832] [<ffffffff810c1deb>] filemap_fdatawait+0x1c/0x1e [ 599.634839] [<ffffffff811bb2e4>] jbd2_journal_commit_transaction+0xa3d/0x1411 [ 599.634846] [<ffffffff81067bc7>] ? autoremove_wake_function+0x0/0x34 [ 599.634852] [<ffffffff811c05f1>] kjournald2+0x138/0x363 [ 599.634857] [<ffffffff81067bc7>] ? autoremove_wake_function+0x0/0x34 [ 599.634863] [<ffffffff811c04b9>] ? kjournald2+0x0/0x363 [ 599.634869] [<ffffffff81067732>] kthread+0x7d/0x85 [ 599.634875] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 599.634881] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 599.634887] [<ffffffff8100a820>] ? 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] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634957] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634962] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 599.634967] [<ffffffff81127e87>] sync_buffer+0x25/0x29 [ 599.634971] [<ffffffff81483f27>] __wait_on_bit+0x43/0x76 [ 599.634977] [<ffffffff81483fc3>] out_of_line_wait_on_bit+0x69/0x74 [ 599.634983] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634989] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.634995] [<ffffffff81127e3d>] __wait_on_buffer+0x21/0x23 [ 599.635003] [<ffffffff811a82cd>] ext4_mb_init_cache+0x23b/0x522 [ 599.635009] [<ffffffff811a86be>] ext4_mb_init_group+0x10a/0x29e [ 599.635015] [<ffffffff811a88a2>] ext4_mb_good_group+0x50/0xd3 [ 599.635021] [<ffffffff811a9da0>] ext4_mb_regular_allocator+0x12e/0x289 [ 599.635027] [<ffffffff811ab8a2>] ext4_mb_new_blocks+0x17e/0x3a4 [ 599.635033] [<ffffffff811a1847>] ? ext4_ext_find_extent+0x122/0x2b8 [ 599.635039] [<ffffffff811a447b>] ext4_ext_map_blocks+0x1a52/0x1c40 [ 599.635045] [<ffffffff810ca188>] ? release_pages+0x7a/0x17c [ 599.635052] [<ffffffff8124971c>] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 599.635059] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 599.635065] [<ffffffff8118850d>] ext4_map_blocks+0x128/0x20e [ 599.635072] [<ffffffff8118a223>] mpage_da_map_and_submit+0x8b/0x2db [ 599.635078] [<ffffffff8118ab9e>] ext4_da_writepages+0x31b/0x4fb [ 599.635084] [<ffffffff810c96d1>] do_writepages+0x1c/0x25 [ 599.635090] [<ffffffff81121cdf>] writeback_single_inode+0xa0/0x1c1 [ 599.635095] [<ffffffff81121fcc>] writeback_sb_inodes+0x9f/0x118 [ 599.635102] [<ffffffff81122a07>] writeback_inodes_wb+0x16a/0x17c [ 599.635107] [<ffffffff81122c68>] wb_writeback+0x24f/0x36c [ 599.635114] [<ffffffff81122ec6>] wb_do_writeback+0x141/0x19a [ 599.635119] [<ffffffff81483d79>] ? schedule_timeout+0x9f/0xbb [ 599.635124] [<ffffffff81122fa5>] bdi_writeback_thread+0x86/0x20d [ 599.635130] [<ffffffff81122f1f>] ? bdi_writeback_thread+0x0/0x20d [ 599.635135] [<ffffffff81067732>] kthread+0x7d/0x85 [ 599.635141] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 599.635147] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 599.635152] [<ffffffff8100a820>] ? 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] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.635219] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.635224] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.635229] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 599.635234] [<ffffffff810c1581>] sync_page+0x44/0x48 [ 599.635240] [<ffffffff81483f27>] __wait_on_bit+0x43/0x76 [ 599.635247] [<ffffffff810c173b>] wait_on_page_bit+0x6d/0x74 [ 599.635253] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.635259] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.635265] [<ffffffff810c1d06>] filemap_fdatawait_range+0x97/0x160 [ 599.635271] [<ffffffff810c96d1>] ? do_writepages+0x1c/0x25 [ 599.635277] [<ffffffff810c1f4d>] ? __filemap_fdatawrite_range+0x4b/0x4d [ 599.635283] [<ffffffff810c1f8d>] filemap_write_and_wait_range+0x3e/0x51 [ 599.635289] [<ffffffff81125bca>] vfs_fsync_range+0x36/0x79 [ 599.635295] [<ffffffff81125c6b>] vfs_fsync+0x17/0x19 [ 599.635301] [<ffffffff81125c96>] do_fsync+0x29/0x3e [ 599.635306] [<ffffffff81125ec0>] sys_fsync+0xb/0xf [ 599.635311] [<ffffffff81009a12>] 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] [<ffffffff810c173b>] wait_on_page_bit+0x6d/0x74 [ 599.634814] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.634820] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.634826] [<ffffffff810c1d06>] filemap_fdatawait_range+0x97/0x160 [ 599.634832] [<ffffffff810c1deb>] filemap_fdatawait+0x1c/0x1e [ 599.634839] [<ffffffff811bb2e4>] jbd2_journal_commit_transaction+0xa3d/0x1411 [ 599.634846] [<ffffffff81067bc7>] ? autoremove_wake_function+0x0/0x34 [ 599.634852] [<ffffffff811c05f1>] kjournald2+0x138/0x363 [ 599.634857] [<ffffffff81067bc7>] ? autoremove_wake_function+0x0/0x34 [ 599.634863] [<ffffffff811c04b9>] ? kjournald2+0x0/0x363 [ 599.634869] [<ffffffff81067732>] kthread+0x7d/0x85 [ 599.634875] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 599.634881] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 599.634887] [<ffffffff8100a820>] ? 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] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634957] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634962] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 599.634967] [<ffffffff81127e87>] sync_buffer+0x25/0x29 [ 599.634971] [<ffffffff81483f27>] __wait_on_bit+0x43/0x76 [ 599.634977] [<ffffffff81483fc3>] out_of_line_wait_on_bit+0x69/0x74 [ 599.634983] [<ffffffff81127e62>] ? sync_buffer+0x0/0x29 [ 599.634989] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.634995] [<ffffffff81127e3d>] __wait_on_buffer+0x21/0x23 [ 599.635003] [<ffffffff811a82cd>] ext4_mb_init_cache+0x23b/0x522 [ 599.635009] [<ffffffff811a86be>] ext4_mb_init_group+0x10a/0x29e [ 599.635015] [<ffffffff811a88a2>] ext4_mb_good_group+0x50/0xd3 [ 599.635021] [<ffffffff811a9da0>] ext4_mb_regular_allocator+0x12e/0x289 [ 599.635027] [<ffffffff811ab8a2>] ext4_mb_new_blocks+0x17e/0x3a4 [ 599.635033] [<ffffffff811a1847>] ? ext4_ext_find_extent+0x122/0x2b8 [ 599.635039] [<ffffffff811a447b>] ext4_ext_map_blocks+0x1a52/0x1c40 [ 599.635045] [<ffffffff810ca188>] ? release_pages+0x7a/0x17c [ 599.635052] [<ffffffff8124971c>] ? radix_tree_gang_lookup_tag_slot+0x81/0xa2 [ 599.635059] [<ffffffff8103cc20>] ? need_resched+0x1e/0x28 [ 599.635065] [<ffffffff8118850d>] ext4_map_blocks+0x128/0x20e [ 599.635072] [<ffffffff8118a223>] mpage_da_map_and_submit+0x8b/0x2db [ 599.635078] [<ffffffff8118ab9e>] ext4_da_writepages+0x31b/0x4fb [ 599.635084] [<ffffffff810c96d1>] do_writepages+0x1c/0x25 [ 599.635090] [<ffffffff81121cdf>] writeback_single_inode+0xa0/0x1c1 [ 599.635095] [<ffffffff81121fcc>] writeback_sb_inodes+0x9f/0x118 [ 599.635102] [<ffffffff81122a07>] writeback_inodes_wb+0x16a/0x17c [ 599.635107] [<ffffffff81122c68>] wb_writeback+0x24f/0x36c [ 599.635114] [<ffffffff81122ec6>] wb_do_writeback+0x141/0x19a [ 599.635119] [<ffffffff81483d79>] ? schedule_timeout+0x9f/0xbb [ 599.635124] [<ffffffff81122fa5>] bdi_writeback_thread+0x86/0x20d [ 599.635130] [<ffffffff81122f1f>] ? bdi_writeback_thread+0x0/0x20d [ 599.635135] [<ffffffff81067732>] kthread+0x7d/0x85 [ 599.635141] [<ffffffff8100a824>] kernel_thread_helper+0x4/0x10 [ 599.635147] [<ffffffff810676b5>] ? kthread+0x0/0x85 [ 599.635152] [<ffffffff8100a820>] ? 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] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.635219] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.635224] [<ffffffff810c153d>] ? sync_page+0x0/0x48 [ 599.635229] [<ffffffff814839fd>] io_schedule+0x42/0x5d [ 599.635234] [<ffffffff810c1581>] sync_page+0x44/0x48 [ 599.635240] [<ffffffff81483f27>] __wait_on_bit+0x43/0x76 [ 599.635247] [<ffffffff810c173b>] wait_on_page_bit+0x6d/0x74 [ 599.635253] [<ffffffff81067bfb>] ? wake_bit_function+0x0/0x2c [ 599.635259] [<ffffffff810c9f97>] ? pagevec_lookup_tag+0x20/0x29 [ 599.635265] [<ffffffff810c1d06>] filemap_fdatawait_range+0x97/0x160 [ 599.635271] [<ffffffff810c96d1>] ? do_writepages+0x1c/0x25 [ 599.635277] [<ffffffff810c1f4d>] ? __filemap_fdatawrite_range+0x4b/0x4d [ 599.635283] [<ffffffff810c1f8d>] filemap_write_and_wait_range+0x3e/0x51 [ 599.635289] [<ffffffff81125bca>] vfs_fsync_range+0x36/0x79 [ 599.635295] [<ffffffff81125c6b>] vfs_fsync+0x17/0x19 [ 599.635301] [<ffffffff81125c96>] do_fsync+0x29/0x3e [ 599.635306] [<ffffffff81125ec0>] sys_fsync+0xb/0xf [ 599.635311] [<ffffffff81009a12>] system_call_fastpath+0x16/0x1b
