我有一台 AMD FX 8320 8 核 CPU，我已将其用作主文件服务器。我在其上安装了 Ubuntu Server 16.04，没有任何问题。我还安装了 KVM/Quem，并测试了使用 virt-manager 从另一台机器安装 VM。一切顺利。我还设置了 Samba，一切顺利。
当系统处于空闲状态或空闲了一段时间时，我会收到以下消息。当我将其用作 Ubuntu 桌面时，同样的硬件运行良好。唯一的区别是我没有安装 Nvidia 卡的驱动程序，因为它是无头服务器。为了消除可能性，我正在从终端安装 Nvidia 驱动程序，但我无法完成，因为系统在安装过程中冻结。
有人知道是什么原因导致了下面的错误或如何解决吗？
Jul 20 14:56:34 ubuntuNAS kernel: [10214.273076] INFO: rcu_sched detected stalls on CPUs/tasks:
Jul 20 14:56:34 ubuntuNAS kernel: [10214.276215] 2-...: (1 GPs behind) idle=773/1/0 softirq=6581/6581 fqs=1
Jul 20 14:56:34 ubuntuNAS kernel: [10214.280069] (detected by 0, t=1500168 jiffies, g=3026, c=3025, q=17432)
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283337] Task dump for CPU 2:
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283340] swapper/2 R running task 0 0 1 0x00000008
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283346] ffff88040c6bfe70 0000000000000018 000000001ec93b00 000003d41387e046
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283351] ffffffff81f36140 ffff88040c6c0000 ffff8804069a0000 ffffffff81eb4ec0
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283356] ffff88040c6bc000 ffff88040c6bfeb8 ffffffff816c3de7 ffff88040c6bfed0
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283360] Call Trace:
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283371] [<ffffffff816c3de7>] ? cpuidle_enter+0x17/0x20
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283377] [<ffffffff810c3fe2>] ? call_cpuidle+0x32/0x60
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283382] [<ffffffff816c3dc3>] ? cpuidle_select+0x13/0x20
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283387] [<ffffffff810c42a0>] ? cpu_startup_entry+0x290/0x350
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283392] [<ffffffff81051714>] ? start_secondary+0x154/0x190
Jul 20 14:56:34 ubuntuNAS kernel: [10214.283397] rcu_sched kthread starved for 1500168 jiffies! g3026 c3025 f0x2 s3 ->state=0x0
还有这些信息：
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.418285] INFO: task (snap):4351 blocked for more than 120 seconds.
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.418886] Not tainted 4.4.0-31-generic #50-Ubuntu
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.419641] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421537] (snap) D ffff8800d89dbcf8 0 4351 1 0x00000000
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421542] ffff8800d89dbcf8 ffff8800d89dbdd0 ffff88040c6b2940 ffff88040c65c4c0
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421546] ffff8800d89dc000 ffffffff81e5bb44 ffff88040c65c4c0 00000000ffffffff
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421550] ffffffff81e5bb48 ffff8800d89dbd10 ffffffff81829a25 ffffffff81e5bb40
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421554] Call Trace:
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421560] [<ffffffff81829a25>] schedule+0x35/0x80
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421565] [<ffffffff81829cce>] schedule_preempt_disabled+0xe/0x10
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421569] [<ffffffff8182b909>] __mutex_lock_slowpath+0xb9/0x130
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421573] [<ffffffff8182b99f>] mutex_lock+0x1f/0x30
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421577] [<ffffffff8111586d>] cgroup_kn_lock_live+0x3d/0xd0
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421591] [<ffffffff81117360>] __cgroup_procs_write+0x60/0x2f0
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421615] [<ffffffff8121d9d5>] ? do_filp_open+0xa5/0x100
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421633] [<ffffffff81117624>] cgroup_procs_write+0x14/0x20
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421645] [<ffffffff811126ff>] cgroup_file_write+0x3f/0x100
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421662] [<ffffffff8128c40d>] kernfs_fop_write+0x11d/0x170
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421682] [<ffffffff8120c9a8>] __vfs_write+0x18/0x40
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421703] [<ffffffff8120d339>] vfs_write+0xa9/0x1a0
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421722] [<ffffffff8120dff5>] SyS_write+0x55/0xc0
Jul 20 14:28:21 ubuntuNAS kernel: [ 8520.421743] [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71
还有这个：将 X 替换为所有 8 个核心的类似消息：
[14048.299498] NMI watchdog: BUG: soft lockup -CPU#X stuck for 22s! [systemd-udevd:13603]
当最后一条消息运行时，我无法对系统做任何事情。系统冻结，CPU 风扇转速超高，我对此无能为力。