在 Azure 上托管的 Ubuntu VM 操作系统版本为 18.04，崩溃了，也无法在串行控制台中访问。必须强制重启 VM 才能再次获得访问权限。
崩溃期间没有报告任何日志...日志记录是在虚拟机重启后发生的。
崩溃后看到以下突出显示：
Jan 24 14:56:43 kernel: [3393495.154433] audit: type=1400 audit(1611500203.578:1363716): apparmor="DENIED" operation="ptrace" profile="docker-default" pid=6593 comm="process-agent" requested_mask="read" denied_mask="read" peer="unconfined"
Jan 24 14:56:43 kernel: [3393495.154438] audit: type=1400 audit(1611500203.578:1363717): apparmor="DENIED" operation="ptrace" profile="docker-default" pid=6593 comm="process-agent" requested_mask="read" denied_mask="read" peer="unconfined"
Jan 24 14:56:43 kernel: [3393495.154442] audit: type=1400 audit(1611500203.578:1363718): apparmor="DENIED" operation="ptrace" profile="docker-default" pid=6593 comm="process-agent" requested_mask="read" denied_mask="read" peer="unconfined"
Jan 24 14:56:43 kernel: [3393495.154445] audit: type=1400 audit(1611500203.578:1363719): apparmor="DENIED" operation="ptrace" profile="docker-default" pid=6593 comm="process-agent" requested_mask="read" denied_mask="read" peer="unconfined"
**Jan 24 15:58:28 systemd-modules-load[442]: Inserted module 'iscsi_tcp'
Jan 24 15:58:28 systemd-modules-load[442]: Inserted module 'ib_iser'**
Jan 24 15:58:28 keyboard-setup.sh[453]: cannot open file /run/tmpkbd.aTTaud
Jan 24 15:58:28 systemd[1]: Started Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling.
Jan 24 15:58:28 systemd[1]: Started Create Static Device Nodes in /dev.
Jan 24 15:58:28 systemd[1]: Started Load/Save Random Seed.
Jan 24 15:58:28 systemd[1]: Mounted FUSE Control File System.
Jan 24 15:58:28 systemd[1]: Mounted Kernel Configuration File System.
Kernel Version: 5.4.0-1032-azure