My UML was idle for 18 hours. When looking to the console,
I found the following messages, UML still is running:
BUG: soft lockup detected on CPU#0!
EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000
Not tainted
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000
Call Trace:
a0267780: [<a00195f0>] um_timer+0x10/0x50
a02677a0: [<a005d1b6>] handle_IRQ_event+0x36/0x90
a02677d0: [<a005d2be>] __do_IRQ+0xae/0x110
a02677f0: [<a00141ff>] do_IRQ+0x2f/0x40
a0267800: [<a001953b>] timer_irq+0x11b/0x170
a0267830: [<a001991a>] timer_handler+0x7a/0x90
a0267840: [<a00198ad>] timer_handler+0xd/0x90
a0267850: [<a0021fc2>] sig_handler_common_skas+0x92/0x130
a0267874: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267880: [<a002f8bc>] alarm_handler+0x4c/0x70
a02678a0: [<a01c7e68>] __restore+0x0/0x8
a02678bc: [<a00218f0>] start_kernel_proc+0x0/0x30
a02678e0: [<a01de7ba>] __libc_nanosleep+0x1a/0x60
a0267920: [<a0019590>] boot_timer_handler+0x0/0x50
a0267928: [<a01c7e68>] __restore+0x0/0x8
a026796c: [<a01c80b4>] sigemptyset+0x24/0x40
a0267980: [<a002f6c3>] change_signals+0x43/0x80
a026798c: [<a01c80b4>] sigemptyset+0x24/0x40
a02679a0: [<a002f6c3>] change_signals+0x43/0x80
a02679b8: [<a01c7e68>] __restore+0x0/0x8
a02679ec: [<a01c80b4>] sigemptyset+0x24/0x40
a0267a00: [<a002f4db>] set_signals+0x7b/0x170
a0267a14: [<a01c7d2b>] __libc_longjmp+0x3b/0x60
a0267a30: [<a0020667>] switch_threads+0x47/0x50
a0267a6c: [<a01c80b4>] sigemptyset+0x24/0x40
a0267a80: [<a002f6c3>] change_signals+0x43/0x80
a0267b20: [<a0035a44>] finish_task_switch+0x24/0xa0
a0267b40: [<a020d920>] schedule+0x2e0/0x500
a0267b80: [<a0018e5e>] idle_sleep+0x1e/0x20
a0267b90: [<a001936a>] uml_idle_timer+0x3a/0x80
a0267ba0: [<a001648f>] default_idle+0x4f/0x70
a0267bb0: [<a00164a1>] default_idle+0x61/0x70
a0267bd0: [<a00218e4>] init_idle_skas+0x24/0x30
a0267be0: [<a00025bb>] start_kernel+0x17b/0x1c0
a0267bf0: [<a002191b>] start_kernel_proc+0x2b/0x30
a0267c00: [<a002eeca>] run_kernel_thread+0x3a/0x50
a0267c18: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267c28: [<a002eeaf>] run_kernel_thread+0x1f/0x50
a0267cc4: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267cd0: [<a00215a1>] new_thread_handler+0xb1/0x110
a0267cd4: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267ce0: [<a0020698>] thread_wait+0x28/0x50
a0267d20: [<a01c7e68>] __restore+0x0/0x8
a0267d60: [<a01c8021>] __kill+0x11/0x20
BUG: soft lockup detected on CPU#0!
EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000
Not tainted
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000
Call Trace:
a0267780: [<a00195f0>] um_timer+0x10/0x50
a02677a0: [<a005d1b6>] handle_IRQ_event+0x36/0x90
a02677d0: [<a005d2be>] __do_IRQ+0xae/0x110
a02677f0: [<a00141ff>] do_IRQ+0x2f/0x40
a0267800: [<a001953b>] timer_irq+0x11b/0x170
a0267830: [<a001991a>] timer_handler+0x7a/0x90
a0267840: [<a00198ad>] timer_handler+0xd/0x90
a0267850: [<a0021fc2>] sig_handler_common_skas+0x92/0x130
a0267874: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267880: [<a002f8bc>] alarm_handler+0x4c/0x70
a02678a0: [<a01c7e68>] __restore+0x0/0x8
a02678bc: [<a00218f0>] start_kernel_proc+0x0/0x30
a02678e0: [<a01de7ba>] __libc_nanosleep+0x1a/0x60
a0267920: [<a0019590>] boot_timer_handler+0x0/0x50
a0267928: [<a01c7e68>] __restore+0x0/0x8
a026796c: [<a01c80b4>] sigemptyset+0x24/0x40
a0267980: [<a002f6c3>] change_signals+0x43/0x80
a026798c: [<a01c80b4>] sigemptyset+0x24/0x40
a02679a0: [<a002f6c3>] change_signals+0x43/0x80
a02679ac: [<a01c80b4>] sigemptyset+0x24/0x40
a02679bc: [<a01c80b4>] sigemptyset+0x24/0x40
a02679d0: [<a002f5a2>] set_signals+0x142/0x170
a02679ec: [<a01c80b4>] sigemptyset+0x24/0x40
a0267a00: [<a002f4db>] set_signals+0x7b/0x170
a0267a14: [<a01c7d2b>] __libc_longjmp+0x3b/0x60
a0267a30: [<a0020667>] switch_threads+0x47/0x50
a0267a6c: [<a01c80b4>] sigemptyset+0x24/0x40
a0267a80: [<a002f6c3>] change_signals+0x43/0x80
a0267b20: [<a0035a44>] finish_task_switch+0x24/0xa0
a0267b40: [<a020d920>] schedule+0x2e0/0x500
a0267b80: [<a0018e5e>] idle_sleep+0x1e/0x20
a0267b90: [<a001936a>] uml_idle_timer+0x3a/0x80
a0267ba0: [<a001648f>] default_idle+0x4f/0x70
a0267bb0: [<a00164a1>] default_idle+0x61/0x70
a0267bd0: [<a00218e4>] init_idle_skas+0x24/0x30
a0267be0: [<a00025bb>] start_kernel+0x17b/0x1c0
a0267bf0: [<a002191b>] start_kernel_proc+0x2b/0x30
a0267c00: [<a002eeca>] run_kernel_thread+0x3a/0x50
a0267c18: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267c28: [<a002eeaf>] run_kernel_thread+0x1f/0x50
a0267cc4: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267cd0: [<a00215a1>] new_thread_handler+0xb1/0x110
a0267cd4: [<a00218f0>] start_kernel_proc+0x0/0x30
a0267ce0: [<a0020698>] thread_wait+0x28/0x50
a0267d20: [<a01c7e68>] __restore+0x0/0x8
a0267d60: [<a01c8021>] __kill+0x11/0x20
-------------------------------------------------------
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