Created attachment 232741 [details] dmesg_4.8.0-040800rc5-lowlatency [ 8971.159405] INFO: task systemd-udevd:265 blocked for more than 120 seconds. [ 8971.159417] Tainted: G W 4.8.0-040800rc5-lowlatency #201609041832 [ 8971.159421] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 8971.159424] systemd-udevd D ffffa35d9f2d7fc0 0 265 1 0x00000000 [ 8971.159433] ffffa35d90ed43c0 ffffa35d8f9d20c0 ffffffff974cb835 ffffa35d8d394000 [ 8971.159439] ffffa35d8d393be8 ffffa35d8925145c ffffa35d8f9d20c0 00000000ffffffff [ 8971.159445] ffffa35d89251460 ffffffff97a26b28 ffffa35d89251458 ffffffff97a26e81 [ 8971.159450] Call Trace: [ 8971.159467] [<ffffffff974cb835>] ? mutex_optimistic_spin+0x115/0x1c0 [ 8971.159475] [<ffffffff97a26b28>] ? schedule+0x38/0x90 [ 8971.159479] [<ffffffff97a26e81>] ? schedule_preempt_disabled+0x11/0x20 [ 8971.159484] [<ffffffff97a28906>] ? __mutex_lock_slowpath+0xc6/0x140 [ 8971.159492] [<ffffffff97a28993>] ? mutex_lock+0x13/0x30 [ 8971.159497] [<ffffffff9765488a>] ? __blkdev_get+0x6a/0x440 [ 8971.159500] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 8971.159502] [<ffffffff97654d82>] ? blkdev_get+0x122/0x350 [ 8971.159506] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 8971.159511] [<ffffffff97614434>] ? do_dentry_open+0x1f4/0x2e0 [ 8971.159519] [<ffffffff97626128>] ? path_openat+0x698/0x1410 [ 8971.159523] [<ffffffff9787f14a>] ? uevent_show+0x5a/0x100 [ 8971.159527] [<ffffffff97628161>] ? do_filp_open+0x91/0x100 [ 8971.159531] [<ffffffff9775276e>] ? memzero_explicit+0xe/0x10 [ 8971.159538] [<ffffffff978578e0>] ? urandom_read+0x130/0x2c0 [ 8971.159541] [<ffffffff97615c8e>] ? do_sys_open+0x12e/0x210 [ 8971.159547] [<ffffffff97a2b1b6>] ? entry_SYSCALL_64_fastpath+0x1e/0xa8 [ 9094.037089] INFO: task systemd-udevd:265 blocked for more than 120 seconds. [ 9094.037101] Tainted: G W 4.8.0-040800rc5-lowlatency #201609041832 [ 9094.037105] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9094.037109] systemd-udevd D ffffa35d9f2d7fc0 0 265 1 0x00000004 [ 9094.037117] ffffa35d90ed43c0 ffffa35d8f9d20c0 ffffffff974cb835 ffffa35d8d394000 [ 9094.037131] ffffa35d8d393be8 ffffa35d8925145c ffffa35d8f9d20c0 00000000ffffffff [ 9094.037135] ffffa35d89251460 ffffffff97a26b28 ffffa35d89251458 ffffffff97a26e81 [ 9094.037140] Call Trace: [ 9094.037151] [<ffffffff974cb835>] ? mutex_optimistic_spin+0x115/0x1c0 [ 9094.037156] [<ffffffff97a26b28>] ? schedule+0x38/0x90 [ 9094.037160] [<ffffffff97a26e81>] ? schedule_preempt_disabled+0x11/0x20 [ 9094.037164] [<ffffffff97a28906>] ? __mutex_lock_slowpath+0xc6/0x140 [ 9094.037170] [<ffffffff97a28993>] ? mutex_lock+0x13/0x30 [ 9094.037175] [<ffffffff9765488a>] ? __blkdev_get+0x6a/0x440 [ 9094.037179] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 9094.037182] [<ffffffff97654d82>] ? blkdev_get+0x122/0x350 [ 9094.037186] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 9094.037190] [<ffffffff97614434>] ? do_dentry_open+0x1f4/0x2e0 [ 9094.037196] [<ffffffff97626128>] ? path_openat+0x698/0x1410 [ 9094.037199] [<ffffffff9787f14a>] ? uevent_show+0x5a/0x100 [ 9094.037204] [<ffffffff97628161>] ? do_filp_open+0x91/0x100 [ 9094.037208] [<ffffffff9775276e>] ? memzero_explicit+0xe/0x10 [ 9094.037214] [<ffffffff978578e0>] ? urandom_read+0x130/0x2c0 [ 9094.037218] [<ffffffff97615c8e>] ? do_sys_open+0x12e/0x210 [ 9094.037224] [<ffffffff97a2b1b6>] ? entry_SYSCALL_64_fastpath+0x1e/0xa8 [ 9216.915008] INFO: task systemd-udevd:265 blocked for more than 120 seconds. [ 9216.915022] Tainted: G W 4.8.0-040800rc5-lowlatency #201609041832 [ 9216.915026] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 9216.915030] systemd-udevd D ffffa35d9f2d7fc0 0 265 1 0x00000004 [ 9216.915044] ffffa35d90ed43c0 ffffa35d8f9d20c0 ffffffff974cb835 ffffa35d8d394000 [ 9216.915051] ffffa35d8d393be8 ffffa35d8925145c ffffa35d8f9d20c0 00000000ffffffff [ 9216.915057] ffffa35d89251460 ffffffff97a26b28 ffffa35d89251458 ffffffff97a26e81 [ 9216.915064] Call Trace: [ 9216.915079] [<ffffffff974cb835>] ? mutex_optimistic_spin+0x115/0x1c0 [ 9216.915087] [<ffffffff97a26b28>] ? schedule+0x38/0x90 [ 9216.915092] [<ffffffff97a26e81>] ? schedule_preempt_disabled+0x11/0x20 [ 9216.915098] [<ffffffff97a28906>] ? __mutex_lock_slowpath+0xc6/0x140 [ 9216.915106] [<ffffffff97a28993>] ? mutex_lock+0x13/0x30 [ 9216.915113] [<ffffffff9765488a>] ? __blkdev_get+0x6a/0x440 [ 9216.915118] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 9216.915123] [<ffffffff97654d82>] ? blkdev_get+0x122/0x350 [ 9216.915127] [<ffffffff97655070>] ? blkdev_get_by_dev+0x40/0x40 [ 9216.915133] [<ffffffff97614434>] ? do_dentry_open+0x1f4/0x2e0 [ 9216.915141] [<ffffffff97626128>] ? path_openat+0x698/0x1410 [ 9216.915146] [<ffffffff9787f14a>] ? uevent_show+0x5a/0x100 [ 9216.915153] [<ffffffff97628161>] ? do_filp_open+0x91/0x100 [ 9216.915158] [<ffffffff9775276e>] ? memzero_explicit+0xe/0x10 [ 9216.915166] [<ffffffff978578e0>] ? urandom_read+0x130/0x2c0 [ 9216.915171] [<ffffffff97615c8e>] ? do_sys_open+0x12e/0x210 [ 9216.915179] [<ffffffff97a2b1b6>] ? entry_SYSCALL_64_fastpath+0x1e/0xa8 [ 9280.951982] usb 3-4: USB disconnect, device number 3
Created attachment 232751 [details] lspci -vvnn