Meaning of "kernel: __ratelimit: 2 callbacks suppressed" in /var/log/messages or dmesg?

Solution Verified - Updated -

Issue

  • We got the following messages in /var/log/messages.
Jan  8 17:45:22 hostname kernel: __ratelimit: 2 callbacks suppressed
Jan  8 17:47:26 hostname kernel: __ratelimit: 13 callbacks suppressed
Jan  8 17:47:42 hostname kernel: __ratelimit: 6 callbacks suppressed
Jan  8 17:47:48 hostname kernel: __ratelimit: 11 callbacks suppressed
Jan  8 17:51:04 hostname kernel: __ratelimit: 5 callbacks suppressed
Jan  8 17:51:24 hostname kernel: __ratelimit: 7 callbacks suppressed
Jan  8 17:51:30 hostname kernel: __ratelimit: 6 callbacks suppressed
Jan  8 17:52:31 hostname kernel: __ratelimit: 8 callbacks suppressed
Jan  8 17:52:38 hostname kernel: __ratelimit: 7 callbacks suppressed
Jan  8 17:58:29 hostname kernel: __ratelimit: 7 callbacks suppressed
  • What do these messages mean?

Environment

  • Red Hat Enterprise Linux

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