Public bug reported:
Total freeze, screen, mouse, keyboard, everything.
No idea what caused it. I didn't do anything special.
Found this from logs (several times):
kernel: [31560.452013] INFO: task kworker/3:0:15 blocked for more than 120
seconds.
kernel: [31560.452016] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
kernel: [31560.452019] kworker/3:0 D 0000000000000003 0 15 2
0x00000000
kernel: [31560.452024] ffff880128f59bc0 0000000000000046 0000000000000000
0000000000000000
kernel: [31560.452029] ffff880128f59fd8 ffff880128f59fd8 ffff880128f59fd8
0000000000012a40
kernel: [31560.452033] ffff88010560ae40 ffff880128f51720 00ff880100000002
7fffffffffffffff
kernel: [31560.452037] Call Trace:
kernel: [31560.452045] [<ffffffff815f081f>] schedule+0x3f/0x60
kernel: [31560.452048] [<ffffffff815f0e65>] schedule_timeout+0x2a5/0x320
kernel: [31560.452052] [<ffffffff815f065f>] wait_for_common+0xdf/0x180
kernel: [31560.452056] [<ffffffff81057420>] ? try_to_wake_up+0x200/0x200
kernel: [31560.452299] [<ffffffffa07b2dd0>] ? nv_printf+0x80/0x80 [nvidia]
kernel: [31560.452302] [<ffffffff815f07dd>] wait_for_completion+0x1d/0x20
kernel: [31560.452477] [<ffffffffa07b229a>] os_acquire_sema+0x7a/0x90 [nvidia]
kernel: [31560.452586] [<ffffffffa017875e>] ? _nv023043rm+0x9/0xb [nvidia]
kernel: [31560.452763] [<ffffffffa077fe54>] _nv023254rm+0x6/0x1f [nvidia]
kernel: [31560.452964] [<ffffffffa0677272>] ? _nv003431rm+0x38/0x131 [nvidia]
kernel: [31560.453139] [<ffffffffa078bbf8>] ? _nv002268rm+0xd/0x27 [nvidia]
kernel: [31560.453315] [<ffffffffa07904b1>] ? rm_execute_work_item+0x1c/0xe4
[nvidia]
kernel: [31560.453489] [<ffffffffa07b2e1f>] ? os_execute_work_item+0x4f/0x90
[nvidia]
kernel: [31560.453492] [<ffffffff8107c0da>] ? process_one_work+0x11a/0x480
kernel: [31560.453496] [<ffffffff8107ce85>] ? worker_thread+0x165/0x370
kernel: [31560.453499] [<ffffffff8107cd20>] ?
manage_workers.isra.30+0x130/0x130
kernel: [31560.453503] [<ffffffff8108132c>] ? kthread+0x8c/0xa0
kernel: [31560.453507] [<ffffffff815fbbe4>] ? kernel_thread_helper+0x4/0x10
kernel: [31560.453510] [<ffffffff810812a0>] ? flush_kthread_worker+0xa0/0xa0
kernel: [31560.453513] [<ffffffff815fbbe0>] ? gs_change+0x13/0x13
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/941195
Title:
kworker freezes
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