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虚拟机报告一个 "BUG: soft lockup" (或同时报告多个)

Solution Verified - Updated -

Issue

  • 虚拟机客户机同时出现多个软锁定
  • 由于软锁定,出现内核 panic 的情况。
  • 日志显示类似的消息(来自不同来源的示例):

    BUG: soft lockup - CPU#6 stuck for 73s! [flush-253:0:1207]
    BUG: soft lockup - CPU#7 stuck for 74s! [processname:15706]
    BUG: soft lockup - CPU#5 stuck for 63s! [processname:25582]
    BUG: soft lockup - CPU#0 stuck for 64s! [proceessname:15789]
    
    
    <time> <hostname> kernel: NMI watchdog: BUG: soft lockup - CPU#6 stuck for 25s! [ksoftirqd/6:38]
    <time> <hostname> kernel: NMI watchdog: BUG: soft lockup - CPU#7 stuck for 22s! [ksoftirqd/7:43]
    <time> <hostname> kernel: NMI watchdog: BUG: soft lockup - CPU#7 stuck for 24s! [NetworkManager:945]
    <time> <hostname> kernel: NMI watchdog: BUG: soft lockup - CPU#7 stuck for 22s! [watchdog/7:41]  
    

    也可能会记录以下行:

    hrtimer: interrupt took NUMBER ns
    

Environment

  • Red Hat Enterprise Linux (任何版本)
  • 虚拟机

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