>From the trace below, this looks to be a USB issue (USB added to cc): the scsi error handler thread is waiting for usb storage to complete the reset. It's a 3.14.5 kernel, so the previous reset hang because of spurious sense requests should be fixed. James On Tue, 2014-06-10 at 16:50 +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=77631 > > Bug ID: 77631 > Summary: task scsi_eh_6:537 blocked for more than 120 seconds. > Product: IO/Storage > Version: 2.5 > Kernel Version: 3.14.6 > Hardware: All > OS: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: SCSI > Assignee: linux-scsi@xxxxxxxxxxxxxxx > Reporter: mikhail.v.gavrilov@xxxxxxxxx > Regression: No > > Created attachment 138941 > --> https://bugzilla.kernel.org/attachment.cgi?id=138941&action=edit > kernel log > > task scsi_eh_6:537 blocked for more than 120 seconds. > > > [ 240.036323] INFO: task scsi_eh_6:537 blocked for more than 120 seconds. > [ 240.036333] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 240.036337] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 240.036341] scsi_eh_6 D ffff880813528000 6184 537 2 0x00000000 > [ 240.036355] ffff8808027cdc50 0000000000000046 ffff88007c988000 > ffff8808027cdfd8 > [ 240.036366] 00000000001d5800 00000000001d5800 ffff88007c988000 > ffff880810ca6bf0 > [ 240.036375] ffff880810ca6bf8 0000000000000246 ffff88007c988000 > ffff88080c532600 > [ 240.036384] Call Trace: > [ 240.036400] [<ffffffff817dafe1>] schedule_preempt_disabled+0x31/0x80 > [ 240.036409] [<ffffffff817dc204>] mutex_lock_nested+0x194/0x430 > [ 240.036434] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 240.036450] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 240.036466] [<ffffffffa035d9b4>] device_reset+0x24/0x50 [usb_storage] > [ 240.036478] [<ffffffff81523f0a>] scsi_try_bus_device_reset+0x2a/0x50 > [ 240.036487] [<ffffffff8152601f>] scsi_eh_ready_devs+0x4df/0xc20 > [ 240.036495] [<ffffffff81527886>] ? scsi_eh_get_sense+0x176/0x2a0 > [ 240.036504] [<ffffffff81527eec>] scsi_error_handler+0x53c/0x830 > [ 240.036512] [<ffffffff815279b0>] ? scsi_eh_get_sense+0x2a0/0x2a0 > [ 240.036522] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 240.036530] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 240.036540] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 240.036547] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 240.036553] 1 lock held by scsi_eh_6/537: > [ 240.036555] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035d9b4>] > device_reset+0x24/0x50 [usb_storage] > [ 240.036575] INFO: task usb-storage:539 blocked for more than 120 seconds. > [ 240.036579] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 240.036582] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 240.036585] usb-storage D ffff88081351a590 5032 539 2 0x00000000 > [ 240.036595] ffff8808025ebae0 0000000000000046 ffff880800c28000 > ffff8808025ebfd8 > [ 240.036604] 00000000001d5800 00000000001d5800 ffff880800c28000 > 7fffffffffffffff > [ 240.036612] ffff880810ca6dd0 ffff880810ca6dc8 ffff880800c28000 > 0000000000000000 > [ 240.036621] Call Trace: > [ 240.036629] [<ffffffff817daad9>] schedule+0x29/0x70 > [ 240.036637] [<ffffffff817d9a59>] schedule_timeout+0x1f9/0x350 > [ 240.036648] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 240.036657] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 240.036665] [<ffffffff810fbb75>] ? trace_hardirqs_on_caller+0x105/0x1d0 > [ 240.036673] [<ffffffff817dc02c>] wait_for_completion+0xfc/0x140 > [ 240.036684] [<ffffffff810d9a50>] ? wake_up_state+0x20/0x20 > [ 240.036692] [<ffffffff815845fd>] usb_sg_wait+0x12d/0x190 > [ 240.036709] [<ffffffffa035e4db>] > usb_stor_bulk_transfer_sglist.part.4+0x8b/0xf0 [usb_storage] > [ 240.036725] [<ffffffffa035e5b1>] usb_stor_bulk_srb+0x71/0x80 [usb_storage] > [ 240.036741] [<ffffffffa035e71c>] usb_stor_Bulk_transport+0x15c/0x360 > [usb_storage] > [ 240.036758] [<ffffffffa035ef9b>] usb_stor_invoke_transport+0x3b/0x570 > [usb_storage] > [ 240.036766] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 240.036774] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 240.036790] [<ffffffffa035dbce>] usb_stor_transparent_scsi_command+0xe/0x10 > [usb_storage] > [ 240.036807] [<ffffffffa035fe96>] usb_stor_control_thread+0x176/0x290 > [usb_storage] > [ 240.036824] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 240.036840] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 240.036847] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 240.036854] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 240.036862] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 240.036869] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 240.036873] 1 lock held by usb-storage/539: > [ 240.036876] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035fdaa>] > usb_stor_control_thread+0x8a/0x290 [usb_storage] > [ 359.971932] INFO: task scsi_eh_6:537 blocked for more than 120 seconds. > [ 359.971935] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 359.971936] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 359.971937] scsi_eh_6 D ffff880813528000 6184 537 2 0x00000000 > [ 359.971941] ffff8808027cdc50 0000000000000046 ffff88007c988000 > ffff8808027cdfd8 > [ 359.971943] 00000000001d5800 00000000001d5800 ffff88007c988000 > ffff880810ca6bf0 > [ 359.971946] ffff880810ca6bf8 0000000000000246 ffff88007c988000 > ffff88080c532600 > [ 359.971948] Call Trace: > [ 359.971953] [<ffffffff817dafe1>] schedule_preempt_disabled+0x31/0x80 > [ 359.971955] [<ffffffff817dc204>] mutex_lock_nested+0x194/0x430 > [ 359.971961] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 359.971964] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 359.971968] [<ffffffffa035d9b4>] device_reset+0x24/0x50 [usb_storage] > [ 359.971985] [<ffffffff81523f0a>] scsi_try_bus_device_reset+0x2a/0x50 > [ 359.971987] [<ffffffff8152601f>] scsi_eh_ready_devs+0x4df/0xc20 > [ 359.971989] [<ffffffff81527886>] ? scsi_eh_get_sense+0x176/0x2a0 > [ 359.971991] [<ffffffff81527eec>] scsi_error_handler+0x53c/0x830 > [ 359.971992] [<ffffffff815279b0>] ? scsi_eh_get_sense+0x2a0/0x2a0 > [ 359.971995] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 359.971997] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 359.971999] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 359.972001] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 359.972002] 1 lock held by scsi_eh_6/537: > [ 359.972003] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035d9b4>] > device_reset+0x24/0x50 [usb_storage] > [ 359.972008] INFO: task usb-storage:539 blocked for more than 120 seconds. > [ 359.972009] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 359.972009] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 359.972010] usb-storage D ffff88081351a590 5032 539 2 0x00000000 > [ 359.972012] ffff8808025ebae0 0000000000000046 ffff880800c28000 > ffff8808025ebfd8 > [ 359.972014] 00000000001d5800 00000000001d5800 ffff880800c28000 > 7fffffffffffffff > [ 359.972016] ffff880810ca6dd0 ffff880810ca6dc8 ffff880800c28000 > 0000000000000000 > [ 359.972018] Call Trace: > [ 359.972020] [<ffffffff817daad9>] schedule+0x29/0x70 > [ 359.972021] [<ffffffff817d9a59>] schedule_timeout+0x1f9/0x350 > [ 359.972025] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 359.972027] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 359.972028] [<ffffffff810fbb75>] ? trace_hardirqs_on_caller+0x105/0x1d0 > [ 359.972030] [<ffffffff817dc02c>] wait_for_completion+0xfc/0x140 > [ 359.972033] [<ffffffff810d9a50>] ? wake_up_state+0x20/0x20 > [ 359.972035] [<ffffffff815845fd>] usb_sg_wait+0x12d/0x190 > [ 359.972038] [<ffffffffa035e4db>] > usb_stor_bulk_transfer_sglist.part.4+0x8b/0xf0 [usb_storage] > [ 359.972041] [<ffffffffa035e5b1>] usb_stor_bulk_srb+0x71/0x80 [usb_storage] > [ 359.972045] [<ffffffffa035e71c>] usb_stor_Bulk_transport+0x15c/0x360 > [usb_storage] > [ 359.972048] [<ffffffffa035ef9b>] usb_stor_invoke_transport+0x3b/0x570 > [usb_storage] > [ 359.972050] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 359.972052] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 359.972055] [<ffffffffa035dbce>] usb_stor_transparent_scsi_command+0xe/0x10 > [usb_storage] > [ 359.972059] [<ffffffffa035fe96>] usb_stor_control_thread+0x176/0x290 > [usb_storage] > [ 359.972062] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 359.972065] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 359.972067] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 359.972068] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 359.972070] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 359.972071] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 359.972072] 1 lock held by usb-storage/539: > [ 359.972073] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035fdaa>] > usb_stor_control_thread+0x8a/0x290 [usb_storage] > [ 479.904100] INFO: task scsi_eh_6:537 blocked for more than 120 seconds. > [ 479.904111] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 479.904114] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 479.904118] scsi_eh_6 D ffff880813528000 6184 537 2 0x00000000 > [ 479.904131] ffff8808027cdc50 0000000000000046 ffff88007c988000 > ffff8808027cdfd8 > [ 479.904140] 00000000001d5800 00000000001d5800 ffff88007c988000 > ffff880810ca6bf0 > [ 479.904148] ffff880810ca6bf8 0000000000000246 ffff88007c988000 > ffff88080c532600 > [ 479.904156] Call Trace: > [ 479.904171] [<ffffffff817dafe1>] schedule_preempt_disabled+0x31/0x80 > [ 479.904179] [<ffffffff817dc204>] mutex_lock_nested+0x194/0x430 > [ 479.904204] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 479.904218] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 479.904232] [<ffffffffa035d9b4>] device_reset+0x24/0x50 [usb_storage] > [ 479.904243] [<ffffffff81523f0a>] scsi_try_bus_device_reset+0x2a/0x50 > [ 479.904251] [<ffffffff8152601f>] scsi_eh_ready_devs+0x4df/0xc20 > [ 479.904258] [<ffffffff81527886>] ? scsi_eh_get_sense+0x176/0x2a0 > [ 479.904266] [<ffffffff81527eec>] scsi_error_handler+0x53c/0x830 > [ 479.904274] [<ffffffff815279b0>] ? scsi_eh_get_sense+0x2a0/0x2a0 > [ 479.904282] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 479.904290] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 479.904299] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 479.904305] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 479.904310] 1 lock held by scsi_eh_6/537: > [ 479.904312] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035d9b4>] > device_reset+0x24/0x50 [usb_storage] > [ 479.904331] INFO: task usb-storage:539 blocked for more than 120 seconds. > [ 479.904334] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 479.904337] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 479.904340] usb-storage D ffff88081351a590 5032 539 2 0x00000000 > [ 479.904348] ffff8808025ebae0 0000000000000046 ffff880800c28000 > ffff8808025ebfd8 > [ 479.904357] 00000000001d5800 00000000001d5800 ffff880800c28000 > 7fffffffffffffff > [ 479.904364] ffff880810ca6dd0 ffff880810ca6dc8 ffff880800c28000 > 0000000000000000 > [ 479.904372] Call Trace: > [ 479.904379] [<ffffffff817daad9>] schedule+0x29/0x70 > [ 479.904385] [<ffffffff817d9a59>] schedule_timeout+0x1f9/0x350 > [ 479.904396] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 479.904404] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 479.904411] [<ffffffff810fbb75>] ? trace_hardirqs_on_caller+0x105/0x1d0 > [ 479.904418] [<ffffffff817dc02c>] wait_for_completion+0xfc/0x140 > [ 479.904428] [<ffffffff810d9a50>] ? wake_up_state+0x20/0x20 > [ 479.904436] [<ffffffff815845fd>] usb_sg_wait+0x12d/0x190 > [ 479.904451] [<ffffffffa035e4db>] > usb_stor_bulk_transfer_sglist.part.4+0x8b/0xf0 [usb_storage] > [ 479.904465] [<ffffffffa035e5b1>] usb_stor_bulk_srb+0x71/0x80 [usb_storage] > [ 479.904480] [<ffffffffa035e71c>] usb_stor_Bulk_transport+0x15c/0x360 > [usb_storage] > [ 479.904495] [<ffffffffa035ef9b>] usb_stor_invoke_transport+0x3b/0x570 > [usb_storage] > [ 479.904502] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 479.904509] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 479.904523] [<ffffffffa035dbce>] usb_stor_transparent_scsi_command+0xe/0x10 > [usb_storage] > [ 479.904538] [<ffffffffa035fe96>] usb_stor_control_thread+0x176/0x290 > [usb_storage] > [ 479.904553] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 479.904567] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 479.904573] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 479.904580] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 479.904588] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 479.904593] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 479.904597] 1 lock held by usb-storage/539: > [ 479.904600] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035fdaa>] > usb_stor_control_thread+0x8a/0x290 [usb_storage] > [ 599.833322] INFO: task scsi_eh_6:537 blocked for more than 120 seconds. > [ 599.833326] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 599.833327] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 599.833328] scsi_eh_6 D ffff880813528000 6184 537 2 0x00000000 > [ 599.833333] ffff8808027cdc50 0000000000000046 ffff88007c988000 > ffff8808027cdfd8 > [ 599.833336] 00000000001d5800 00000000001d5800 ffff88007c988000 > ffff880810ca6bf0 > [ 599.833338] ffff880810ca6bf8 0000000000000246 ffff88007c988000 > ffff88080c532600 > [ 599.833340] Call Trace: > [ 599.833346] [<ffffffff817dafe1>] schedule_preempt_disabled+0x31/0x80 > [ 599.833348] [<ffffffff817dc204>] mutex_lock_nested+0x194/0x430 > [ 599.833355] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 599.833359] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 599.833363] [<ffffffffa035d9b4>] device_reset+0x24/0x50 [usb_storage] > [ 599.833367] [<ffffffff81523f0a>] scsi_try_bus_device_reset+0x2a/0x50 > [ 599.833369] [<ffffffff8152601f>] scsi_eh_ready_devs+0x4df/0xc20 > [ 599.833371] [<ffffffff81527886>] ? scsi_eh_get_sense+0x176/0x2a0 > [ 599.833374] [<ffffffff81527eec>] scsi_error_handler+0x53c/0x830 > [ 599.833376] [<ffffffff815279b0>] ? scsi_eh_get_sense+0x2a0/0x2a0 > [ 599.833379] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 599.833381] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 599.833384] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 599.833386] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 599.833387] 1 lock held by scsi_eh_6/537: > [ 599.833388] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035d9b4>] > device_reset+0x24/0x50 [usb_storage] > [ 599.833394] INFO: task usb-storage:539 blocked for more than 120 seconds. > [ 599.833395] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 599.833396] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 599.833396] usb-storage D ffff88081351a590 5032 539 2 0x00000000 > [ 599.833399] ffff8808025ebae0 0000000000000046 ffff880800c28000 > ffff8808025ebfd8 > [ 599.833401] 00000000001d5800 00000000001d5800 ffff880800c28000 > 7fffffffffffffff > [ 599.833403] ffff880810ca6dd0 ffff880810ca6dc8 ffff880800c28000 > 0000000000000000 > [ 599.833405] Call Trace: > [ 599.833408] [<ffffffff817daad9>] schedule+0x29/0x70 > [ 599.833410] [<ffffffff817d9a59>] schedule_timeout+0x1f9/0x350 > [ 599.833413] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 599.833416] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 599.833418] [<ffffffff810fbb75>] ? trace_hardirqs_on_caller+0x105/0x1d0 > [ 599.833420] [<ffffffff817dc02c>] wait_for_completion+0xfc/0x140 > [ 599.833423] [<ffffffff810d9a50>] ? wake_up_state+0x20/0x20 > [ 599.833425] [<ffffffff815845fd>] usb_sg_wait+0x12d/0x190 > [ 599.833430] [<ffffffffa035e4db>] > usb_stor_bulk_transfer_sglist.part.4+0x8b/0xf0 [usb_storage] > [ 599.833434] [<ffffffffa035e5b1>] usb_stor_bulk_srb+0x71/0x80 [usb_storage] > [ 599.833438] [<ffffffffa035e71c>] usb_stor_Bulk_transport+0x15c/0x360 > [usb_storage] > [ 599.833442] [<ffffffffa035ef9b>] usb_stor_invoke_transport+0x3b/0x570 > [usb_storage] > [ 599.833444] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 599.833446] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 599.833450] [<ffffffffa035dbce>] usb_stor_transparent_scsi_command+0xe/0x10 > [usb_storage] > [ 599.833453] [<ffffffffa035fe96>] usb_stor_control_thread+0x176/0x290 > [usb_storage] > [ 599.833457] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 599.833461] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 599.833463] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 599.833465] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 599.833467] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 599.833469] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 599.833470] 1 lock held by usb-storage/539: > [ 599.833471] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035fdaa>] > usb_stor_control_thread+0x8a/0x290 [usb_storage] > [ 649.166883] kworker/u16:5 (114) used greatest stack depth: 1992 bytes left > [ 719.763710] INFO: task scsi_eh_6:537 blocked for more than 120 seconds. > [ 719.763715] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 719.763716] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 719.763718] scsi_eh_6 D ffff880813528000 6184 537 2 0x00000000 > [ 719.763724] ffff8808027cdc50 0000000000000046 ffff88007c988000 > ffff8808027cdfd8 > [ 719.763728] 00000000001d5800 00000000001d5800 ffff88007c988000 > ffff880810ca6bf0 > [ 719.763732] ffff880810ca6bf8 0000000000000246 ffff88007c988000 > ffff88080c532600 > [ 719.763735] Call Trace: > [ 719.763743] [<ffffffff817dafe1>] schedule_preempt_disabled+0x31/0x80 > [ 719.763746] [<ffffffff817dc204>] mutex_lock_nested+0x194/0x430 > [ 719.763756] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 719.763762] [<ffffffffa035d9b4>] ? device_reset+0x24/0x50 [usb_storage] > [ 719.763768] [<ffffffffa035d9b4>] device_reset+0x24/0x50 [usb_storage] > [ 719.763774] [<ffffffff81523f0a>] scsi_try_bus_device_reset+0x2a/0x50 > [ 719.763777] [<ffffffff8152601f>] scsi_eh_ready_devs+0x4df/0xc20 > [ 719.763780] [<ffffffff81527886>] ? scsi_eh_get_sense+0x176/0x2a0 > [ 719.763784] [<ffffffff81527eec>] scsi_error_handler+0x53c/0x830 > [ 719.763787] [<ffffffff815279b0>] ? scsi_eh_get_sense+0x2a0/0x2a0 > [ 719.763791] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 719.763794] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 719.763798] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 719.763801] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 719.763803] 1 lock held by scsi_eh_6/537: > [ 719.763804] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035d9b4>] > device_reset+0x24/0x50 [usb_storage] > [ 719.763812] INFO: task usb-storage:539 blocked for more than 120 seconds. > [ 719.763814] Not tainted 3.14.6-200.fc20.x86_64+debug #1 > [ 719.763815] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > [ 719.763816] usb-storage D ffff88081351a590 5032 539 2 0x00000000 > [ 719.763820] ffff8808025ebae0 0000000000000046 ffff880800c28000 > ffff8808025ebfd8 > [ 719.763823] 00000000001d5800 00000000001d5800 ffff880800c28000 > 7fffffffffffffff > [ 719.763827] ffff880810ca6dd0 ffff880810ca6dc8 ffff880800c28000 > 0000000000000000 > [ 719.763830] Call Trace: > [ 719.763833] [<ffffffff817daad9>] schedule+0x29/0x70 > [ 719.763836] [<ffffffff817d9a59>] schedule_timeout+0x1f9/0x350 > [ 719.763841] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 719.763844] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 719.763848] [<ffffffff810fbb75>] ? trace_hardirqs_on_caller+0x105/0x1d0 > [ 719.763851] [<ffffffff817dc02c>] wait_for_completion+0xfc/0x140 > [ 719.763855] [<ffffffff810d9a50>] ? wake_up_state+0x20/0x20 > [ 719.763859] [<ffffffff815845fd>] usb_sg_wait+0x12d/0x190 > [ 719.763865] [<ffffffffa035e4db>] > usb_stor_bulk_transfer_sglist.part.4+0x8b/0xf0 [usb_storage] > [ 719.763871] [<ffffffffa035e5b1>] usb_stor_bulk_srb+0x71/0x80 [usb_storage] > [ 719.763878] [<ffffffffa035e71c>] usb_stor_Bulk_transport+0x15c/0x360 > [usb_storage] > [ 719.763884] [<ffffffffa035ef9b>] usb_stor_invoke_transport+0x3b/0x570 > [usb_storage] > [ 719.763887] [<ffffffff810fb9e9>] ? mark_held_locks+0xb9/0x140 > [ 719.763890] [<ffffffff817dff8c>] ? _raw_spin_unlock_irq+0x2c/0x40 > [ 719.763896] [<ffffffffa035dbce>] usb_stor_transparent_scsi_command+0xe/0x10 > [usb_storage] > [ 719.763903] [<ffffffffa035fe96>] usb_stor_control_thread+0x176/0x290 > [usb_storage] > [ 719.763909] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 719.763915] [<ffffffffa035fd20>] ? fill_inquiry_response+0x20/0x20 > [usb_storage] > [ 719.763918] [<ffffffff810c452f>] kthread+0xff/0x120 > [ 719.763920] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 719.763924] [<ffffffff817eaafc>] ret_from_fork+0x7c/0xb0 > [ 719.763926] [<ffffffff810c4430>] ? insert_kthread_work+0x80/0x80 > [ 719.763928] 1 lock held by usb-storage/539: > [ 719.763929] #0: (&us_interface_key[i]){+.+.+.}, at: [<ffffffffa035fdaa>] > usb_stor_control_thread+0x8a/0x290 [usb_storage] > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
