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/var/log/messages show "kernel: BUG: soft lockup - CPU#1 stuck for 10s! [bondN:PID]"
Symptoms
  • /var/log/messages file shows:

    kernel: BUG: soft lockup - CPU#1 stuck for 10s! [bondN:PID]
    kernel: EIP is at _spin_lock
    kernel: [...] ad_rx_machine+...
    kernel: [...] bond_3ad_lacpdu_recv+...


  • Soft lockup might occur during high load on machine with Bond Load Sharing 802.3ad configured with LACP.

Cause

Bond is causing high CPU load.

Refer to RedHat BugZilla #457300 for technical details.


Solution
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