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    Enable core file dumps when an application crashes or segmentation faults

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    • JonathanLeeJ
      JonathanLee @stephenw10
      last edited by

      @stephenw10 that swap file it creates is not readable it’s compiled information also. Just a side note

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        If a process aborts and creates a core file you should see something like:

        Mar 19 23:14:22 	kernel 		pid 76582 (php-fpm), jid 0, uid 0: exited on signal 11 (core dumped) 
        
        May  7 15:15:47 fw1 kernel: pid 65129 (pftop), jid 0, uid 0: exited on signal 6 (core dumped)
        
        JonathanLeeJ 1 Reply Last reply Reply Quote 1
        • JonathanLeeJ
          JonathanLee @stephenw10
          last edited by JonathanLee

          @stephenw10 do you know how or what commands are used to manually trigger it for squid?

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Nope not something I've ever tried. Did you try the command they gave you?

            JonathanLeeJ 1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator
              last edited by

              @JonathanLee said in Enable core file dumps when an application crashes or segmentation faults:

              coredump_dir /root

              Where did you set that?

              JonathanLeeJ 1 Reply Last reply Reply Quote 0
              • JonathanLeeJ
                JonathanLee @stephenw10
                last edited by JonathanLee

                @stephenw10 yes it showed blank from command input in GUI it killed the process but no core file it didn’t generate one when I used that command

                I am going to try this one recommend by a freeBSD forum user

                
                killall -11 squid worked for me (as root)
                
                

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                • JonathanLeeJ
                  JonathanLee @stephenw10
                  last edited by JonathanLee

                  @stephenw10 advanced options on squid configure gui area, it takes when I run squid -k parse also

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                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    It tries to dump the core for both the main and child squid processes here but fails with:

                    Jun 12 19:02:08 	kernel 		pid 80887 (squid), jid 0, uid 0: exited on signal 6 (no core dump - bad address)
                    Jun 12 19:01:48 	kernel 		pid 33418 (squid), jid 0, uid 100: exited on signal 6 (no core dump - bad address) 
                    
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                    • JonathanLeeJ
                      JonathanLee @stephenw10
                      last edited by JonathanLee

                      @stephenw10 that looks like a permissions issue with Squid I wonder if we set it to squid logs location if that would work? Bad address? Does it mean path?

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                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        Yes I assume it's trying to dump somewhere it can't or has nothing configured.

                        I don't expect to set that value in the Squid config. It shows the same for other processes. Seems like a FreeBSD env value missing.

                        JonathanLeeJ 2 Replies Last reply Reply Quote 1
                        • JonathanLeeJ
                          JonathanLee @stephenw10
                          last edited by

                          @stephenw10 I bet it is like field of dreams for code, if you code it developers will come…

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                          • JonathanLeeJ
                            JonathanLee @stephenw10
                            last edited by

                            @stephenw10

                            killall -11 squid

                            mine shows no information on core anything...

                            Jun 12 12:11:40 kernel pid 84728 (squid), jid 0, uid 100: exited on signal 6
                            Jun 12 12:11:40 kernel pid 84677 (squid), jid 0, uid 0: exited on signal 11

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                            • JonathanLeeJ
                              JonathanLee @stephenw10
                              last edited by

                              @stephenw10 try to put it in quotes like this

                              coredump_dir "/var/squid/logs"

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                              • JonathanLeeJ
                                JonathanLee
                                last edited by JonathanLee

                                Screenshot 2024-06-12 at 12.24.15.png

                                could this be my issue with it not even trying?

                                Screenshot 2024-06-12 at 12.25.52.png

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                                • stephenw10S
                                  stephenw10 Netgate Administrator @JonathanLee
                                  last edited by

                                  @JonathanLee said in Enable core file dumps when an application crashes or segmentation faults:

                                  killall -11 squid

                                  mine shows no information on core anything...

                                  Try using kill -6 or kill -11 against the PID rather than all 'squid' processes.

                                  JonathanLeeJ 1 Reply Last reply Reply Quote 1
                                  • JonathanLeeJ
                                    JonathanLee @stephenw10
                                    last edited by

                                    @stephenw10

                                    
                                    Jun 12 13:40:58	kernel		pid 88818 (squid), jid 0, uid 100: exited on signal 6
                                    Jun 12 13:40:58	(squid-1)	88818	FATAL: Received Segment Violation...dying. listening port: 192.168.1.1:3128
                                    Jun 12 13:39:43	kernel		pid 51752 (squid), jid 0, uid 100: exited on signal 6
                                    Jun 12 13:39:43	(squid-1)	51752	FATAL: Received Segment Violation...dying.
                                    Jun 12 13:39:11	kernel		pid 17654 (squid), jid 0, uid 100: exited on signal 6
                                    Jun 12 13:38:05	check_reload_status	480	Reloading filter
                                    

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                                    • stephenw10S
                                      stephenw10 Netgate Administrator
                                      last edited by

                                      Hmm, are you testing this on your 2100? In 23.09.1?

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                                      • JonathanLeeJ
                                        JonathanLee @stephenw10
                                        last edited by

                                        @stephenw10 No that version disabled my crypt chip I am still on 23.05.01 it is the only version that works for everything I need

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                                        • JonathanLeeJ
                                          JonathanLee @stephenw10
                                          last edited by

                                          @stephenw10 squids uid is squid and we are running commands as root does that matter?

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                                          • stephenw10S
                                            stephenw10 Netgate Administrator
                                            last edited by

                                            Nope that should be fine. This isn't a Squid specific issue, applies to any process I've tested this with. So far.

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