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    What does "core dumped" and "Caught Term Signal" mean?

    Scheduled Pinned Locked Moved General pfSense Questions
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    • A Offline
      AR15USR
      last edited by

      Recently I'm seeing these two log entries, what do they mean?

      
      Jun 9 17:54:29	kernel		pid 73695 (pkg), uid 0: exited on signal 11 (core dumped)
      Jun 9 12:06:47	check_reload_status		Syncing firewall
      Jun 9 12:06:47	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] The Rules update has finished.
      Jun 9 12:06:47	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Snort has restarted with your new set of rules...
      Jun 9 12:06:46	kernel		igb1: promiscuous mode enabled
      Jun 9 12:06:44	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Snort START for WAN(igb1)...
      Jun 9 12:06:41	kernel		pid 15956 (snort), uid 0: exited on signal 4
      Jun 9 12:06:41	kernel		igb1: promiscuous mode disabled
      Jun 9 12:06:41	snort	15956	*** Caught Term-Signal
      Jun 9 12:06:41	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Snort STOP for WAN(igb1)...
      Jun 9 12:06:41	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Building new sid-msg.map file for WAN...
      Jun 9 12:06:40	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Enabling any flowbit-required rules for: WAN...
      Jun 9 12:06:29	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Updating rules configuration for: WAN ...
      Jun 9 12:06:29	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Removed 49 obsoleted rules category files.
      Jun 9 12:06:29	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Hide Deprecated Rules is enabled. Removing obsoleted rules categories.
      Jun 9 12:06:23	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Emerging Threats Open rules are up to date...
      Jun 9 12:06:16	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Snort OpenAppID detectors are up to date...
      Jun 9 12:06:10	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] Snort VRT rules file update downloaded successfully
      Jun 9 12:05:00	php		/usr/local/pkg/snort/snort_check_for_rule_updates.php: [Snort] There is a new set of Snort VRT rules posted. Downloading snortrules-snapshot-2980.tar.gz...
      Jun 9 09:55:28	kernel		pid 86083 (pkg), uid 0: exited on signal 11 (core dumped)
      
      

      Seems to be happening around the Snort update check..


      2.6.0-RELEASE

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      • A Offline
        AR15USR
        last edited by

        Bump…


        2.6.0-RELEASE

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        • KOMK Offline
          KOM
          last edited by

          Is Google down for you??  ;D

          A core dump means the kernel had a major spasm for some reason and dumped its stack & process list to a file for debugging.  This is not a good thing.

          Caught term signal means that a process received a termination signal to quit.

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          • A Offline
            AR15USR
            last edited by

            @KOM:

            Is Google down for you??  ;D

            A core dump means the kernel had a major spasm for some reason and dumped its stack & process list to a file for debugging.  This is not a good thing.

            Caught term signal means that a process received a termination signal to quit.

            No I googled it first like I always do but didn't find anything as it relates to pfSense. Thanks for the explanation. I'll watch it and see if it continues..


            2.6.0-RELEASE

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            • F Offline
              foresthus
              last edited by

              Hi

              I had this today and I am wondering if this is a bug.

              snort 10786 *** Caught Term-Signal

              Is there an issue for this?

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              • K Offline
                kpa
                last edited by

                Actually the explanation above is wrong and misleading. A kernel crash would show a very specific message on the primary console that the kernel couldn't continue its execution with some explanation like "Fatal trap 12: page fault while in kernel mode" and drop you to the kernel debugger on the primary console. This is not what is happening when you encounter a "core dumped" message. This is when a userspace process does something that the kernel doesn't like and gets killed by the kernel. For example the process  tries to divide by zero or it tries to access part of the process memory space that hasn't been yet allocated for it by the kernel. The reasons for "core dumped" vary, sometimes it's a programming error, sometimes it could be a hardware error as well but most of the time those errors happen as a result of programming errors or misconfiguration of the software.

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