No more info with usb debug compiled in kernel:
[16800.541796] INFO: task dar:11401 blocked for more than 120 seconds.
[16800.541802] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[16800.541805] dar D ffff880028019ba0 0 11401 11396
[16800.541810] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[16800.541814] 0000000000012f80 000000000000e388 ffff88008d18d980
ffffffff8084f360
[16800.541817] ffff88008d18dd28 00000000805397ad 00000001004ab262
ffffffff8020f80e
[16800.541821] Call Trace:
[16800.541836] [<ffffffff8020f80e>] ? __switch_to+0xfe/0x310
[16800.541842] [<ffffffff80665679>] schedule+0x9/0x20
[16800.541845] [<ffffffff806656c7>] io_schedule+0x37/0x50
[16800.541850] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[16800.541853] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[16800.541855] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[16800.541858] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[16800.541860] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[16800.541865] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[16800.541868] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[16800.541871] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[16800.541887] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[16800.541892] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[16800.541895] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[16800.541900] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[16800.541906] [<ffffffff804b3933>] ? scsi_pool_alloc_command+0x43/0x80
[16800.541909] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[16800.541912] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[16800.541916] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[16800.541922] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[16800.541925] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[16800.541930] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[16800.541935] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[16800.541937] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[16800.541941] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[16800.541943] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[16800.541949] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[16800.541954] [<ffffffff802ff022>] ? do_filp_open+0x2a2/0x9d0
[16800.541956] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[16800.541959] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[16800.541967] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[16800.541969] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[16800.541972] [<ffffffff802f2580>] sys_write+0x50/0x90
[16800.541974] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
[16920.545073] INFO: task dar:11401 blocked for more than 120 seconds.
[16920.545082] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[16920.545088] dar D ffff880028019ba0 0 11401 11396
[16920.545098] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[16920.545108] 0000000000012f80 000000000000e388 ffff88008d18d980
ffffffff8084f360
[16920.545117] ffff88008d18dd28 00000000805397ad 00000001004ab262
ffffffff8020f80e
[16920.545126] Call Trace:
[16920.545143] [<ffffffff8020f80e>] ? __switch_to+0xfe/0x310
[16920.545154] [<ffffffff80665679>] schedule+0x9/0x20
[16920.545162] [<ffffffff806656c7>] io_schedule+0x37/0x50
[16920.545171] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[16920.545179] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[16920.545186] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[16920.545193] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[16920.545201] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[16920.545211] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[16920.545218] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[16920.545226] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[16920.545244] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[16920.545258] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[16920.545266] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[16920.545281] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[16920.545291] [<ffffffff804b3933>] ? scsi_pool_alloc_command+0x43/0x80
[16920.545300] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[16920.545308] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[16920.545322] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[16920.545332] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[16920.545340] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[16920.545354] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[16920.545368] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[16920.545376] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[16920.545386] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[16920.545394] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[16920.545403] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[16920.545412] [<ffffffff802ff022>] ? do_filp_open+0x2a2/0x9d0
[16920.545420] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[16920.545428] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[16920.545439] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[16920.545447] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[16920.545454] [<ffffffff802f2580>] sys_write+0x50/0x90
[16920.545462] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
[17280.541748] INFO: task dar:11401 blocked for more than 120 seconds.
[17280.541756] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[17280.541763] dar D ffff880028019ba0 0 11401 11396
[17280.541772] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[17280.541782] 0000000000012f80 000000000000e388 ffff88008d18d980
ffff88013f8a4320
[17280.541791] ffff88008d18dd28 00000001805397ad 00000001004cdbc4
ffff88010e5b19c0
[17280.541800] Call Trace:
[17280.541818] [<ffffffff80665679>] schedule+0x9/0x20
[17280.541826] [<ffffffff806656c7>] io_schedule+0x37/0x50
[17280.541836] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[17280.541843] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[17280.541850] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17280.541857] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17280.541865] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[17280.541874] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[17280.541882] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[17280.541889] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[17280.541908] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[17280.541922] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[17280.541930] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[17280.541945] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[17280.541954] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[17280.541963] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[17280.541977] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17280.541987] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[17280.541995] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[17280.542009] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[17280.542023] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17280.542031] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[17280.542040] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[17280.542049] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[17280.542058] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[17280.542066] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[17280.542075] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[17280.542082] [<ffffffff80305ad0>] ? dput+0xb0/0x170
[17280.542092] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[17280.542100] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[17280.542107] [<ffffffff802f2580>] sys_write+0x50/0x90
[17280.542116] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
[17400.541741] INFO: task dar:11401 blocked for more than 120 seconds.
[17400.541750] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[17400.541756] dar D ffff880028019ba0 0 11401 11396
[17400.541766] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[17400.541776] 0000000000012f80 000000000000e388 ffff88008d18d980
ffff88013f8a4320
[17400.541785] ffff88008d18dd28 00000001805397ad 00000001004cdbc4
ffff88010e5b19c0
[17400.541794] Call Trace:
[17400.541812] [<ffffffff80665679>] schedule+0x9/0x20
[17400.541820] [<ffffffff806656c7>] io_schedule+0x37/0x50
[17400.541830] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[17400.541837] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[17400.541845] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17400.541851] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17400.541859] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[17400.541868] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[17400.541875] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[17400.541883] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[17400.541901] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[17400.541915] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[17400.541923] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[17400.541938] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[17400.541947] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[17400.541955] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[17400.541969] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17400.541979] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[17400.541987] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[17400.542001] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[17400.542015] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17400.542023] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[17400.542033] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[17400.542041] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[17400.542050] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[17400.542058] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[17400.542066] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[17400.542073] [<ffffffff80305ad0>] ? dput+0xb0/0x170
[17400.542084] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[17400.542091] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[17400.542099] [<ffffffff802f2580>] sys_write+0x50/0x90
[17400.542108] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
[17760.541684] INFO: task dar:11401 blocked for more than 120 seconds.
[17760.541693] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[17760.541699] dar D ffff880028015bb0 0 11401 11396
[17760.541709] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[17760.541719] 0000000000012f80 000000000000e388 ffff88008d18d980
ffff88013f8a4320
[17760.541728] ffff88008d18dd28 00000001805397ad 00000001004ee368
ffff88011b274a80
[17760.541737] Call Trace:
[17760.541755] [<ffffffff80665679>] schedule+0x9/0x20
[17760.541763] [<ffffffff806656c7>] io_schedule+0x37/0x50
[17760.541773] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[17760.541781] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[17760.541788] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17760.541795] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17760.541803] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[17760.541812] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[17760.541819] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[17760.541827] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[17760.541846] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[17760.541861] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[17760.541868] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[17760.541883] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[17760.541893] [<ffffffff802bd9c9>] ? rmqueue_bulk+0x59/0xb0
[17760.541901] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[17760.541909] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[17760.541923] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17760.541932] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[17760.541940] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[17760.541954] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[17760.541968] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17760.541975] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[17760.541985] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[17760.541993] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[17760.542003] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[17760.542011] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[17760.542019] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[17760.542026] [<ffffffff80305ad0>] ? dput+0xb0/0x170
[17760.542036] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[17760.542044] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[17760.542052] [<ffffffff802f2580>] sys_write+0x50/0x90
[17760.542061] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
[17880.541657] INFO: task dar:11401 blocked for more than 120 seconds.
[17880.541665] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[17880.541672] dar D ffff880028015bb0 0 11401 11396
[17880.541681] ffff88011a335728 0000000000000086 0100000000000010
ffff8800b456e800
[17880.541691] 0000000000012f80 000000000000e388 ffff88008d18d980
ffff88013f8a4320
[17880.541700] ffff88008d18dd28 00000001805397ad 00000001004ee368
ffff88011b274a80
[17880.541709] Call Trace:
[17880.541727] [<ffffffff80665679>] schedule+0x9/0x20
[17880.541736] [<ffffffff806656c7>] io_schedule+0x37/0x50
[17880.541745] [<ffffffff8031776d>] sync_buffer+0x3d/0x50
[17880.541753] [<ffffffff80665d7a>] __wait_on_bit+0x5a/0x90
[17880.541760] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17880.541767] [<ffffffff80317730>] ? sync_buffer+0x0/0x50
[17880.541774] [<ffffffff80665e24>] out_of_line_wait_on_bit+0x74/0x90
[17880.541784] [<ffffffff80269640>] ? wake_bit_function+0x0/0x40
[17880.541791] [<ffffffff80317726>] __wait_on_buffer+0x26/0x30
[17880.541799] [<ffffffff803185ad>] bh_submit_read+0x4d/0x80
[17880.541817] [<ffffffffa040d73b>] read_block_bitmap+0x9b/0x170 [ext2]
[17880.541832] [<ffffffffa040e521>] ext2_new_blocks+0x201/0x700 [ext2]
[17880.541840] [<ffffffff8031872e>] ? __bread+0xe/0xb0
[17880.541855] [<ffffffffa04123b2>] ext2_get_block+0x342/0x9e0 [ext2]
[17880.541865] [<ffffffff802bd9c9>] ? rmqueue_bulk+0x59/0xb0
[17880.541873] [<ffffffff80316919>] ? alloc_page_buffers+0x79/0xf0
[17880.541881] [<ffffffff8031986f>] __block_prepare_write+0x27f/0x5c0
[17880.541895] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17880.541904] [<ffffffff802b97bf>] ? grab_cache_page_write_begin+0x9f/0xd0
[17880.541912] [<ffffffff80319d39>] block_write_begin+0x59/0xf0
[17880.541926] [<ffffffffa0412045>] ext2_write_begin+0x25/0x30 [ext2]
[17880.541940] [<ffffffffa0412070>] ? ext2_get_block+0x0/0x9e0 [ext2]
[17880.541948] [<ffffffff802ba130>] generic_file_buffered_write+0x120/0x310
[17880.541958] [<ffffffff802bb371>]
__generic_file_aio_write_nolock+0x261/0x470
[17880.541966] [<ffffffff802bb687>] generic_file_aio_write+0x67/0xd0
[17880.541976] [<ffffffff802f1ce1>] do_sync_write+0xf1/0x140
[17880.541983] [<ffffffff80269600>] ? autoremove_wake_function+0x0/0x40
[17880.541991] [<ffffffff80664ff6>] ? thread_return+0x3e/0x6b8
[17880.541998] [<ffffffff80305ad0>] ? dput+0xb0/0x170
[17880.542009] [<ffffffff803b4851>] ? security_file_permission+0x11/0x20
[17880.542017] [<ffffffff802f23cb>] vfs_write+0xcb/0x190
[17880.542024] [<ffffffff802f2580>] sys_write+0x50/0x90
[17880.542033] [<ffffffff80210fc2>] system_call_fastpath+0x16/0x1b
--
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