I can't umount xfs on a 2TB usb disk, when this happened, I can't use usb disk anymore, exec of command "sync" and "lsusb" hangs. Any idea? It's an Acer 4520G laptop. The dmesg show something like this: [21000.265078] INFO: task khubd:409 blocked for more than 120 seconds. [21000.265089] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21000.265097] khubd D ffff88012c195fe0 0 409 2 0x00000000 [21000.265112] ffff88012c30f8d8 0000000000000046 ffffffff8111112b ffff88012c2cc530 [21000.265125] ffff88012acd4530 ffff88012c30ffd8 ffff88012c195c40 ffff88012c195fe8 [21000.265137] ffff88012c195fe0 ffff88012c30e000 0000000000012040 ffff88012c30ffd8 [21000.265149] Call Trace: [21000.265169] [<ffffffff8111112b>] ? pollwake+0x52/0x54 [21000.265185] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21000.265199] [<ffffffff815908f7>] rwsem_down_failed_common+0xdb/0x10d [21000.265211] [<ffffffff81116a53>] ? wait_on_inode+0x1a/0x1c [21000.265223] [<ffffffff81590950>] rwsem_down_read_failed+0x12/0x14 [21000.265237] [<ffffffff812a4e14>] call_rwsem_down_read_failed+0x14/0x30 [21000.265251] [<ffffffff8112aac3>] ? bdev_set+0x0/0x15 [21000.265261] [<ffffffff81104800>] ? get_super+0x64/0xbc [21000.265271] [<ffffffff8158ffc4>] ? down_read+0x17/0x19 [21000.265280] [<ffffffff81104808>] get_super+0x6c/0xbc [21000.265290] [<ffffffff8112c372>] fsync_bdev+0x18/0x49 [21000.265304] [<ffffffff81291ebc>] invalidate_partition+0x25/0x42 [21000.265317] [<ffffffff81155193>] del_gendisk+0x3b/0xf6 [21000.265330] [<ffffffff813347af>] ? device_del+0x199/0x1a1 [21000.265341] [<ffffffff81356eff>] sd_remove+0x66/0xa2 [21000.265352] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21000.265361] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21000.265373] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21000.265383] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21000.265396] [<ffffffff81354dfd>] __scsi_remove_device+0x52/0x9d [21000.265407] [<ffffffff81351fcd>] scsi_forget_host+0x46/0x68 [21000.265417] [<ffffffff8134c162>] scsi_remove_host+0x84/0xfe [21000.265431] [<ffffffff813cfdb3>] quiesce_and_remove_host+0x5f/0x98 [21000.265442] [<ffffffff813cfeb0>] usb_stor_disconnect+0x22/0x2e [21000.265452] [<ffffffff813b6349>] usb_unbind_interface+0x59/0x108 [21000.265462] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21000.265472] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21000.265483] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21000.265493] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21000.265506] [<ffffffff813b3fdb>] usb_disable_device+0x50/0xf7 [21000.265517] [<ffffffff813af5dc>] usb_disconnect+0x93/0x123 [21000.265528] [<ffffffff813afc8d>] hub_thread+0x41b/0xdc2 [21000.265538] [<ffffffff8103d74d>] ? dequeue_entity+0x4a/0x184 [21000.265548] [<ffffffff8103d8fa>] ? dequeue_task_fair+0x73/0x7c [21000.265562] [<ffffffff8105f417>] ? autoremove_wake_function+0x0/0x39 [21000.265573] [<ffffffff813af872>] ? hub_thread+0x0/0xdc2 [21000.265582] [<ffffffff8105ef33>] kthread+0x82/0x8a [21000.265594] [<ffffffff81003a94>] kernel_thread_helper+0x4/0x10 [21000.265603] [<ffffffff8103b3ac>] ? finish_task_switch+0x4b/0xc2 [21000.265613] [<ffffffff815916ad>] ? restore_args+0x0/0x30 [21000.265622] [<ffffffff8105eeb1>] ? kthread+0x0/0x8a [21000.265631] [<ffffffff81003a90>] ? kernel_thread_helper+0x0/0x10 [21000.265712] INFO: task umount:6045 blocked for more than 120 seconds. [21000.265718] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21000.265725] umount D ffff88012c15c8d0 0 6045 4589 0x00000000 [21000.265737] ffff88007cff7c58 0000000000000086 ffff88007cff7bd8 ffffffff81a0b020 [21000.265749] ffff880000000000 ffff88007cff7fd8 ffff88012c15c530 ffff88012c15c8d8 [21000.265761] ffff88012c15c8d0 ffff88007cff6000 0000000000012040 ffff88007cff7fd8 [21000.265773] Call Trace: [21000.265786] [<ffffffff8158f67d>] schedule_timeout+0x27/0xc0 [21000.265800] [<ffffffff810398ff>] ? get_parent_ip+0x11/0x41 [21000.265812] [<ffffffff8125022e>] ? xfs_buf_cmp+0x0/0x22 [21000.265822] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21000.265833] [<ffffffff815900d5>] __down_common+0xa0/0xf3 [21000.265846] [<ffffffff81244308>] ? xfs_getsb+0x32/0x42 [21000.265856] [<ffffffff8159019b>] __down+0x1d/0x1f [21000.265868] [<ffffffff81063b66>] down+0x2d/0x3f [21000.265878] [<ffffffff81251169>] xfs_buf_lock+0x9b/0xeb [21000.265888] [<ffffffff81244308>] xfs_getsb+0x32/0x42 [21000.265898] [<ffffffff81244344>] xfs_unmountfs_writesb+0x2c/0x8e [21000.265910] [<ffffffff8124590b>] xfs_unmountfs+0xf9/0x128 [21000.265921] [<ffffffff812589b0>] xfs_fs_put_super+0x46/0x73 [21000.265932] [<ffffffff81105862>] generic_shutdown_super+0x6b/0xed [21000.265942] [<ffffffff8110590b>] kill_block_super+0x27/0x3f [21000.265951] [<ffffffff81104b75>] deactivate_locked_super+0x26/0x46 [21000.265961] [<ffffffff8110503f>] deactivate_super+0x45/0x4a [21000.265972] [<ffffffff8111a1dc>] mntput_no_expire+0xe2/0x110 [21000.265982] [<ffffffff8111a895>] sys_umount+0x2d7/0x302 [21000.265993] [<ffffffff81590ab0>] ? trace_hardirqs_off_thunk+0x3a/0x6c [21000.266031] [<ffffffff81002cab>] system_call_fastpath+0x16/0x1b [21183.240082] INFO: task khubd:409 blocked for more than 5 seconds. [21183.240093] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21183.240101] khubd D ffff88012c195fe0 0 409 2 0x00000000 [21183.240117] ffff88012c30f8d8 0000000000000046 ffffffff8111112b ffff88012c2cc530 [21183.240132] ffff88012acd4530 ffff88012c30ffd8 ffff88012c195c40 ffff88012c195fe8 [21183.240145] ffff88012c195fe0 ffff88012c30e000 0000000000012040 ffff88012c30ffd8 [21183.240159] Call Trace: [21183.240180] [<ffffffff8111112b>] ? pollwake+0x52/0x54 [21183.240197] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21183.240213] [<ffffffff815908f7>] rwsem_down_failed_common+0xdb/0x10d [21183.240226] [<ffffffff81116a53>] ? wait_on_inode+0x1a/0x1c [21183.240240] [<ffffffff81590950>] rwsem_down_read_failed+0x12/0x14 [21183.240254] [<ffffffff812a4e14>] call_rwsem_down_read_failed+0x14/0x30 [21183.240269] [<ffffffff8112aac3>] ? bdev_set+0x0/0x15 [21183.240281] [<ffffffff81104800>] ? get_super+0x64/0xbc [21183.240291] [<ffffffff8158ffc4>] ? down_read+0x17/0x19 [21183.240301] [<ffffffff81104808>] get_super+0x6c/0xbc [21183.240312] [<ffffffff8112c372>] fsync_bdev+0x18/0x49 [21183.240327] [<ffffffff81291ebc>] invalidate_partition+0x25/0x42 [21183.240341] [<ffffffff81155193>] del_gendisk+0x3b/0xf6 [21183.240356] [<ffffffff813347af>] ? device_del+0x199/0x1a1 [21183.240368] [<ffffffff81356eff>] sd_remove+0x66/0xa2 [21183.240379] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21183.240388] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21183.240401] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21183.240412] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21183.240426] [<ffffffff81354dfd>] __scsi_remove_device+0x52/0x9d [21183.240438] [<ffffffff81351fcd>] scsi_forget_host+0x46/0x68 [21183.240450] [<ffffffff8134c162>] scsi_remove_host+0x84/0xfe [21183.240465] [<ffffffff813cfdb3>] quiesce_and_remove_host+0x5f/0x98 [21183.240476] [<ffffffff813cfeb0>] usb_stor_disconnect+0x22/0x2e [21183.240488] [<ffffffff813b6349>] usb_unbind_interface+0x59/0x108 [21183.240498] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21183.240508] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21183.240520] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21183.240531] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21183.240545] [<ffffffff813b3fdb>] usb_disable_device+0x50/0xf7 [21183.240558] [<ffffffff813af5dc>] usb_disconnect+0x93/0x123 [21183.240569] [<ffffffff813afc8d>] hub_thread+0x41b/0xdc2 [21183.240581] [<ffffffff8103d74d>] ? dequeue_entity+0x4a/0x184 [21183.240591] [<ffffffff8103d8fa>] ? dequeue_task_fair+0x73/0x7c [21183.240607] [<ffffffff8105f417>] ? autoremove_wake_function+0x0/0x39 [21183.240619] [<ffffffff813af872>] ? hub_thread+0x0/0xdc2 [21183.240629] [<ffffffff8105ef33>] kthread+0x82/0x8a [21183.240641] [<ffffffff81003a94>] kernel_thread_helper+0x4/0x10 [21183.240651] [<ffffffff8103b3ac>] ? finish_task_switch+0x4b/0xc2 [21183.240661] [<ffffffff815916ad>] ? restore_args+0x0/0x30 [21183.240671] [<ffffffff8105eeb1>] ? kthread+0x0/0x8a [21183.240680] [<ffffffff81003a90>] ? kernel_thread_helper+0x0/0x10 [21183.240752] INFO: task umount:6045 blocked for more than 5 seconds. [21183.240758] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21183.240765] umount D ffff88012c15c8d0 0 6045 4589 0x00000000 [21183.240778] ffff88007cff7c58 0000000000000086 ffff88007cff7bd8 ffffffff81a0b020 [21183.240792] ffff880000000000 ffff88007cff7fd8 ffff88012c15c530 ffff88012c15c8d8 [21183.240806] ffff88012c15c8d0 ffff88007cff6000 0000000000012040 ffff88007cff7fd8 [21183.240819] Call Trace: [21183.240834] [<ffffffff8158f67d>] schedule_timeout+0x27/0xc0 [21183.240849] [<ffffffff810398ff>] ? get_parent_ip+0x11/0x41 [21183.240862] [<ffffffff8125022e>] ? xfs_buf_cmp+0x0/0x22 [21183.240872] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21183.240884] [<ffffffff815900d5>] __down_common+0xa0/0xf3 [21183.240898] [<ffffffff81244308>] ? xfs_getsb+0x32/0x42 [21183.240909] [<ffffffff8159019b>] __down+0x1d/0x1f [21183.240922] [<ffffffff81063b66>] down+0x2d/0x3f [21183.240935] [<ffffffff81251169>] xfs_buf_lock+0x9b/0xeb [21183.240946] [<ffffffff81244308>] xfs_getsb+0x32/0x42 [21183.240956] [<ffffffff81244344>] xfs_unmountfs_writesb+0x2c/0x8e [21183.240970] [<ffffffff8124590b>] xfs_unmountfs+0xf9/0x128 [21183.240983] [<ffffffff812589b0>] xfs_fs_put_super+0x46/0x73 [21183.240996] [<ffffffff81105862>] generic_shutdown_super+0x6b/0xed [21183.241030] [<ffffffff8110590b>] kill_block_super+0x27/0x3f [21183.241045] [<ffffffff81104b75>] deactivate_locked_super+0x26/0x46 [21183.241061] [<ffffffff8110503f>] deactivate_super+0x45/0x4a [21183.241077] [<ffffffff8111a1dc>] mntput_no_expire+0xe2/0x110 [21183.241093] [<ffffffff8111a895>] sys_umount+0x2d7/0x302 [21183.241109] [<ffffffff81590ab0>] ? trace_hardirqs_off_thunk+0x3a/0x6c [21183.241129] [<ffffffff81002cab>] system_call_fastpath+0x16/0x1b [21188.241078] INFO: task khubd:409 blocked for more than 5 seconds. [21188.241089] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21188.241097] khubd D ffff88012c195fe0 0 409 2 0x00000000 [21188.241113] ffff88012c30f8d8 0000000000000046 ffffffff8111112b ffff88012c2cc530 [21188.241129] ffff88012acd4530 ffff88012c30ffd8 ffff88012c195c40 ffff88012c195fe8 [21188.241144] ffff88012c195fe0 ffff88012c30e000 0000000000012040 ffff88012c30ffd8 [21188.241159] Call Trace: [21188.241180] [<ffffffff8111112b>] ? pollwake+0x52/0x54 [21188.241198] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21188.241214] [<ffffffff815908f7>] rwsem_down_failed_common+0xdb/0x10d [21188.241227] [<ffffffff81116a53>] ? wait_on_inode+0x1a/0x1c [21188.241241] [<ffffffff81590950>] rwsem_down_read_failed+0x12/0x14 [21188.241255] [<ffffffff812a4e14>] call_rwsem_down_read_failed+0x14/0x30 [21188.241269] [<ffffffff8112aac3>] ? bdev_set+0x0/0x15 [21188.241281] [<ffffffff81104800>] ? get_super+0x64/0xbc [21188.241292] [<ffffffff8158ffc4>] ? down_read+0x17/0x19 [21188.241302] [<ffffffff81104808>] get_super+0x6c/0xbc [21188.241313] [<ffffffff8112c372>] fsync_bdev+0x18/0x49 [21188.241328] [<ffffffff81291ebc>] invalidate_partition+0x25/0x42 [21188.241342] [<ffffffff81155193>] del_gendisk+0x3b/0xf6 [21188.241356] [<ffffffff813347af>] ? device_del+0x199/0x1a1 [21188.241368] [<ffffffff81356eff>] sd_remove+0x66/0xa2 [21188.241380] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21188.241390] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21188.241403] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21188.241415] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21188.241429] [<ffffffff81354dfd>] __scsi_remove_device+0x52/0x9d [21188.241441] [<ffffffff81351fcd>] scsi_forget_host+0x46/0x68 [21188.241452] [<ffffffff8134c162>] scsi_remove_host+0x84/0xfe [21188.241467] [<ffffffff813cfdb3>] quiesce_and_remove_host+0x5f/0x98 [21188.241479] [<ffffffff813cfeb0>] usb_stor_disconnect+0x22/0x2e [21188.241491] [<ffffffff813b6349>] usb_unbind_interface+0x59/0x108 [21188.241503] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21188.241513] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21188.241525] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21188.241537] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21188.241552] [<ffffffff813b3fdb>] usb_disable_device+0x50/0xf7 [21188.241564] [<ffffffff813af5dc>] usb_disconnect+0x93/0x123 [21188.241576] [<ffffffff813afc8d>] hub_thread+0x41b/0xdc2 [21188.241588] [<ffffffff8103d74d>] ? dequeue_entity+0x4a/0x184 [21188.241599] [<ffffffff8103d8fa>] ? dequeue_task_fair+0x73/0x7c [21188.241616] [<ffffffff8105f417>] ? autoremove_wake_function+0x0/0x39 [21188.241628] [<ffffffff813af872>] ? hub_thread+0x0/0xdc2 [21188.241638] [<ffffffff8105ef33>] kthread+0x82/0x8a [21188.241651] [<ffffffff81003a94>] kernel_thread_helper+0x4/0x10 [21188.241662] [<ffffffff8103b3ac>] ? finish_task_switch+0x4b/0xc2 [21188.241672] [<ffffffff815916ad>] ? restore_args+0x0/0x30 [21188.241683] [<ffffffff8105eeb1>] ? kthread+0x0/0x8a [21188.241693] [<ffffffff81003a90>] ? kernel_thread_helper+0x0/0x10 [21188.241766] INFO: task umount:6045 blocked for more than 5 seconds. [21188.241773] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21188.241780] umount D ffff88012c15c8d0 0 6045 4589 0x00000000 [21188.241794] ffff88007cff7c58 0000000000000086 ffff88007cff7bd8 ffffffff81a0b020 [21188.241809] ffff880000000000 ffff88007cff7fd8 ffff88012c15c530 ffff88012c15c8d8 [21188.241824] ffff88012c15c8d0 ffff88007cff6000 0000000000012040 ffff88007cff7fd8 [21188.241838] Call Trace: [21188.241854] [<ffffffff8158f67d>] schedule_timeout+0x27/0xc0 [21188.241869] [<ffffffff810398ff>] ? get_parent_ip+0x11/0x41 [21188.241881] [<ffffffff8125022e>] ? xfs_buf_cmp+0x0/0x22 [21188.241892] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21188.241905] [<ffffffff815900d5>] __down_common+0xa0/0xf3 [21188.241919] [<ffffffff81244308>] ? xfs_getsb+0x32/0x42 [21188.241931] [<ffffffff8159019b>] __down+0x1d/0x1f [21188.241943] [<ffffffff81063b66>] down+0x2d/0x3f [21188.241955] [<ffffffff81251169>] xfs_buf_lock+0x9b/0xeb [21188.241966] [<ffffffff81244308>] xfs_getsb+0x32/0x42 [21188.241979] [<ffffffff81244344>] xfs_unmountfs_writesb+0x2c/0x8e [21188.241993] [<ffffffff8124590b>] xfs_unmountfs+0xf9/0x128 [21188.242031] [<ffffffff812589b0>] xfs_fs_put_super+0x46/0x73 [21188.242046] [<ffffffff81105862>] generic_shutdown_super+0x6b/0xed [21188.242062] [<ffffffff8110590b>] kill_block_super+0x27/0x3f [21188.242078] [<ffffffff81104b75>] deactivate_locked_super+0x26/0x46 [21188.242094] [<ffffffff8110503f>] deactivate_super+0x45/0x4a [21188.242111] [<ffffffff8111a1dc>] mntput_no_expire+0xe2/0x110 [21188.242127] [<ffffffff8111a895>] sys_umount+0x2d7/0x302 [21188.242144] [<ffffffff81590ab0>] ? trace_hardirqs_off_thunk+0x3a/0x6c [21188.242166] [<ffffffff81002cab>] system_call_fastpath+0x16/0x1b [21188.242184] INFO: task sync:6206 blocked for more than 5 seconds. [21188.242194] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21188.242206] sync D ffff880110b65fe0 0 6206 6070 0x00000000 [21188.242228] ffff88009c443e40 0000000000000082 ffff88009c443e78 ffffffff81a0b020 [21188.242252] ffffffff00000000 ffff88009c443fd8 ffff880110b65c40 ffff880110b65fe8 [21188.242277] ffff880110b65fe0 ffff88009c442000 0000000000012040 ffff88009c443fd8 [21188.242301] Call Trace: [21188.242319] [<ffffffff8112482b>] ? sync_one_sb+0x0/0x22 [21188.242336] [<ffffffff815908f7>] rwsem_down_failed_common+0xdb/0x10d [21188.242355] [<ffffffff810bc26e>] ? __filemap_fdatawrite_range+0x50/0x52 [21188.242373] [<ffffffff81590950>] rwsem_down_read_failed+0x12/0x14 [21188.242390] [<ffffffff812a4e14>] call_rwsem_down_read_failed+0x14/0x30 [21188.242406] [<ffffffff811048b2>] ? iterate_supers+0x5a/0xcd [21188.242422] [<ffffffff8158ffc4>] ? down_read+0x17/0x19 [21188.242437] [<ffffffff811048ba>] iterate_supers+0x62/0xcd [21188.242452] [<ffffffff8112487c>] sys_sync+0x2f/0x5c [21188.242469] [<ffffffff81002cab>] system_call_fastpath+0x16/0x1b [21193.242150] INFO: task khubd:409 blocked for more than 5 seconds. [21193.242160] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [21193.242168] khubd D ffff88012c195fe0 0 409 2 0x00000000 [21193.242182] ffff88012c30f8d8 0000000000000046 ffffffff8111112b ffff88012c2cc530 [21193.242196] ffff88012acd4530 ffff88012c30ffd8 ffff88012c195c40 ffff88012c195fe8 [21193.242208] ffff88012c195fe0 ffff88012c30e000 0000000000012040 ffff88012c30ffd8 [21193.242220] Call Trace: [21193.242242] [<ffffffff8111112b>] ? pollwake+0x52/0x54 [21193.242257] [<ffffffff815942ed>] ? sub_preempt_count+0x3a/0x4e [21193.242272] [<ffffffff815908f7>] rwsem_down_failed_common+0xdb/0x10d [21193.242284] [<ffffffff81116a53>] ? wait_on_inode+0x1a/0x1c [21193.242296] [<ffffffff81590950>] rwsem_down_read_failed+0x12/0x14 [21193.242310] [<ffffffff812a4e14>] call_rwsem_down_read_failed+0x14/0x30 [21193.242323] [<ffffffff8112aac3>] ? bdev_set+0x0/0x15 [21193.242333] [<ffffffff81104800>] ? get_super+0x64/0xbc [21193.242343] [<ffffffff8158ffc4>] ? down_read+0x17/0x19 [21193.242352] [<ffffffff81104808>] get_super+0x6c/0xbc [21193.242363] [<ffffffff8112c372>] fsync_bdev+0x18/0x49 [21193.242376] [<ffffffff81291ebc>] invalidate_partition+0x25/0x42 [21193.242390] [<ffffffff81155193>] del_gendisk+0x3b/0xf6 [21193.242403] [<ffffffff813347af>] ? device_del+0x199/0x1a1 [21193.242414] [<ffffffff81356eff>] sd_remove+0x66/0xa2 [21193.242425] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21193.242434] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21193.242446] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21193.242456] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21193.242469] [<ffffffff81354dfd>] __scsi_remove_device+0x52/0x9d [21193.242480] [<ffffffff81351fcd>] scsi_forget_host+0x46/0x68 [21193.242490] [<ffffffff8134c162>] scsi_remove_host+0x84/0xfe [21193.242504] [<ffffffff813cfdb3>] quiesce_and_remove_host+0x5f/0x98 [21193.242515] [<ffffffff813cfeb0>] usb_stor_disconnect+0x22/0x2e [21193.242525] [<ffffffff813b6349>] usb_unbind_interface+0x59/0x108 [21193.242535] [<ffffffff81337057>] __device_release_driver+0x7b/0xd1 [21193.242545] [<ffffffff81337185>] device_release_driver+0x23/0x30 [21193.242556] [<ffffffff81336451>] bus_remove_device+0xad/0xc2 [21193.242567] [<ffffffff8133474b>] device_del+0x135/0x1a1 [21193.242580] [<ffffffff813b3fdb>] usb_disable_device+0x50/0xf7 [21193.242590] [<ffffffff813af5dc>] usb_disconnect+0x93/0x123 [21193.242601] [<ffffffff813afc8d>] hub_thread+0x41b/0xdc2 [21193.242612] [<ffffffff8103d74d>] ? dequeue_entity+0x4a/0x184 [21193.242622] [<ffffffff8103d8fa>] ? dequeue_task_fair+0x73/0x7c [21193.242636] [<ffffffff8105f417>] ? autoremove_wake_function+0x0/0x39 [21193.242647] [<ffffffff813af872>] ? hub_thread+0x0/0xdc2 [21193.242656] [<ffffffff8105ef33>] kthread+0x82/0x8a [21193.242667] [<ffffffff81003a94>] kernel_thread_helper+0x4/0x10 [21193.242677] [<ffffffff8103b3ac>] ? finish_task_switch+0x4b/0xc2 [21193.242686] [<ffffffff815916ad>] ? restore_args+0x0/0x30 [21193.242695] [<ffffffff8105eeb1>] ? kthread+0x0/0x8a [21193.242704] [<ffffffff81003a90>] ? kernel_thread_helper+0x0/0x10
Attachment:
config-2.6.37
Description: Binary data
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