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系统变得无响应，并显示信息 "INFO: task <process>:<pid> blocked for more than 120 seconds"

Solution Verified - Updated -

Issue

  • /var/log/messages 在系统无响应前有一系列以下信息：

    INFO: task <process>:<pid> blocked for more than 120 seconds

  • 上述消息背后的原因是什么，需要哪些类型的信息来进行故障排除？

Environment

  • Red Hat Enterprise Linux (RHEL) 9
  • Red Hat Enterprise Linux (RHEL) 8
  • Red Hat Enterprise Linux (RHEL) 7
  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 5.5 (kernel-2.6.18-194) 或更高版本
  • 进程处于无法中断的睡眠状态 (D 状态)

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