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    Netgate 6100 Crash On Interface Change - Not Resolved (IPv6 + PPPoE)

    Scheduled Pinned Locked Moved Official Netgate® Hardware
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    • stephenw10S
      stephenw10 Netgate Administrator
      last edited by

      Ok, we replicated it here. Digging now....

      RobbieTTR 1 Reply Last reply Reply Quote 2
      • RobbieTTR
        RobbieTT @stephenw10
        last edited by

        @stephenw10 said in Netgate 6100 Crash On Interface Change:

        Ok, we replicated it here. Digging now....

        Fine work, fine work indeed. 👍

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

          A fix for this has now gone in upstream: https://redmine.pfsense.org/issues/14164

          That's not something that can be patched at run time though.

          Steve

          RobbieTTR 1 Reply Last reply Reply Quote 1
          • RobbieTTR
            RobbieTT @stephenw10
            last edited by

            @stephenw10 - Thanks Steve, from your comment I guess this will percolate down for a version update window at an unknown date?

            ☕️

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

              Yes it should be in the next version, 23.05.

              In fact it's in our repo now. It should be available for testing in todays snapshots:
              https://github.com/pfsense/FreeBSD-src/commit/f5a365e51feea75d1e5ebc86c53808d8cae7b6d7

              Steve

              RobbieTTR 2 Replies Last reply Reply Quote 0
              • RobbieTTR
                RobbieTT @stephenw10
                last edited by

                @stephenw10
                Thanks again and I am slightly embarrassed to find a bug so soon into my Netgate journey. I'll keep my head down for a bit!

                ☕️

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

                  Don't be. If everyone reported bugs as soon as they found them with the details you did there would be far fewer to find!

                  Steve

                  A 1 Reply Last reply Reply Quote 0
                  • A
                    azdeltawye @stephenw10
                    last edited by

                    @stephenw10

                    Would this bug affect a 4100 also?

                    It appears that I stumbled across this issue the other day when I was messing with traffic shaping on an interface that had ipv6 enabled. The moment I clicked on 'save', the blue LED on the 4100 stopped blinking, UI became unresponsive and all clients lost internet access.
                    I had to cycle power on the 4100 to restore normal operation.

                    RobbieTTR 1 Reply Last reply Reply Quote 0
                    • RobbieTTR
                      RobbieTT @azdeltawye
                      last edited by

                      @azdeltawye
                      Sounds very similar, to say the least. Hopefully the fix will solve all.

                      ☕️

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

                        Yeah, in fact I don't think it's system specific, or even NIC specific. But even if it is the 4100 is similar enough I'd expect it's possible to hit it there too.

                        Steve

                        1 Reply Last reply Reply Quote 0
                        • RobbieTTR
                          RobbieTT @stephenw10
                          last edited by RobbieTT

                          @stephenw10 said in Netgate 6100 Crash On Interface Change:

                          Yes it should be in the next version, 23.05.

                          In fact it's in our repo now. It should be available for testing in todays snapshots:
                          https://github.com/pfsense/FreeBSD-src/commit/f5a365e51feea75d1e5ebc86c53808d8cae7b6d7

                          Steve

                          Hi Steve,
                          Unfortunately the issue persists in 23.05. A change in interface state can still trigger a crash.

                          I ran 7 simple and repeatable tests today - bringing the WAN interface down and back up again (this is enough to trigger the fault) via the disconnect button on Status/Interfaces.

                          7 tests - 4 failures with hard crashes, 3 did not trigger a crash.

                          All 4 failures produced a full crash report, info dump and textdump.tar. All available on request.

                          The back-trace for the 4 crashes are as follows.

                          First:

                          Filename: /var/crash/info.0
                          Dump header from device: /dev/nvd0p3
                            Architecture: amd64
                            Architecture Version: 4
                            Dump Length: 231424
                            Blocksize: 512
                            Compression: none
                            Dumptime: 2023-05-28 14:48:50 +0100
                            Hostname: Router-8.*******.me
                            Magic: FreeBSD Text Dump
                            Version String: FreeBSD 14.0-CURRENT #1 plus-RELENG_23_05-n256102-7cd3d043045: Mon May 22 15:33:52 UTC 2023
                              root@freebsd:/var/jenkins/workspace/pfSense-Plus-snapshots-23_05-main/obj/amd64/LkEyii3W/var/j
                            Panic String: page fault
                            Dump Parity: 4132315394
                            Bounds: 0
                            Dump Status: good
                          
                          Filename: /var/crash/textdump.tar.0
                          ddb.txt���������������������������������������������������������������������������������������������0600����0�������0�������610534������14434655702�  7122� �����������������������������������������������������������������������������������������������������ustar���root����������������������������wheel������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������db:0:kdb.enter.default>  run pfs
                          db:1:pfs> bt
                          Tracing pid 93402 tid 103857 td 0xfffffe00cf7cac80
                          kdb_enter() at kdb_enter+0x32/frame 0xfffffe00cf8a0800
                          vpanic() at vpanic+0x183/frame 0xfffffe00cf8a0850
                          panic() at panic+0x43/frame 0xfffffe00cf8a08b0
                          trap_fatal() at trap_fatal+0x409/frame 0xfffffe00cf8a0910
                          trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00cf8a0970
                          calltrap() at calltrap+0x8/frame 0xfffffe00cf8a0970
                          --- trap 0xc, rip = 0xffffffff80f5a036, rsp = 0xfffffe00cf8a0a40, rbp = 0xfffffe00cf8a0a70 ---
                          in6_selecthlim() at in6_selecthlim+0x96/frame 0xfffffe00cf8a0a70
                          tcp_default_output() at tcp_default_output+0x1ded/frame 0xfffffe00cf8a0c60
                          tcp_output() at tcp_output+0x14/frame 0xfffffe00cf8a0c80
                          tcp6_usr_connect() at tcp6_usr_connect+0x2f4/frame 0xfffffe00cf8a0d10
                          soconnectat() at soconnectat+0x9e/frame 0xfffffe00cf8a0d60
                          kern_connectat() at kern_connectat+0xc9/frame 0xfffffe00cf8a0dc0
                          sys_connect() at sys_connect+0x75/frame 0xfffffe00cf8a0e00
                          amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00cf8a0f30
                          fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00cf8a0f30
                          --- syscall (98, FreeBSD ELF64, connect), rip = 0x800fddc8a, rsp = 0x7fffdf5f8c98, rbp = 0x7fffdf5f8cd0 ---
                          db:1:pfs> 
                          

                          Second:

                          Filename: /var/crash/info.0
                          Dump header from device: /dev/nvd0p3
                            Architecture: amd64
                            Architecture Version: 4
                            Dump Length: 226304
                            Blocksize: 512
                            Compression: none
                            Dumptime: 2023-05-28 14:51:49 +0100
                            Hostname: Router-8.*******.me
                            Magic: FreeBSD Text Dump
                            Version String: FreeBSD 14.0-CURRENT #1 plus-RELENG_23_05-n256102-7cd3d043045: Mon May 22 15:33:52 UTC 2023
                              root@freebsd:/var/jenkins/workspace/pfSense-Plus-snapshots-23_05-main/obj/amd64/LkEyii3W/var/j
                            Panic String: page fault
                            Dump Parity: 1095311618
                            Bounds: 0
                            Dump Status: good
                          
                          Filename: /var/crash/textdump.tar.0
                          ddb.txt���������������������������������������������������������������������������������������������0600����0�������0�������577521������14434656165�  7136� �����������������������������������������������������������������������������������������������������ustar���root����������������������������wheel������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������db:0:kdb.enter.default>  run pfs
                          db:1:pfs> bt
                          Tracing pid 68614 tid 100330 td 0xfffffe00cf325720
                          kdb_enter() at kdb_enter+0x32/frame 0xfffffe00c7d955f0
                          vpanic() at vpanic+0x183/frame 0xfffffe00c7d95640
                          panic() at panic+0x43/frame 0xfffffe00c7d956a0
                          trap_fatal() at trap_fatal+0x409/frame 0xfffffe00c7d95700
                          trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00c7d95760
                          calltrap() at calltrap+0x8/frame 0xfffffe00c7d95760
                          --- trap 0xc, rip = 0xffffffff80f63aa4, rsp = 0xfffffe00c7d95830, rbp = 0xfffffe00c7d95a50 ---
                          ip6_output() at ip6_output+0xb74/frame 0xfffffe00c7d95a50
                          udp6_send() at udp6_send+0x78e/frame 0xfffffe00c7d95c10
                          sosend_dgram() at sosend_dgram+0x357/frame 0xfffffe00c7d95c70
                          sousrsend() at sousrsend+0x5f/frame 0xfffffe00c7d95cd0
                          kern_sendit() at kern_sendit+0x132/frame 0xfffffe00c7d95d60
                          sendit() at sendit+0xb7/frame 0xfffffe00c7d95db0
                          sys_sendto() at sys_sendto+0x4d/frame 0xfffffe00c7d95e00
                          amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00c7d95f30
                          fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00c7d95f30
                          --- syscall (133, FreeBSD ELF64, sendto), rip = 0x823f95f2a, rsp = 0x8202cea88, rbp = 0x8202cead0 ---
                          db:1:pfs>
                          

                          Third:

                          Crash report details:
                          
                          No PHP errors found.
                          
                          Filename: /var/crash/info.0
                          Dump header from device: /dev/nvd0p3
                            Architecture: amd64
                            Architecture Version: 4
                            Dump Length: 229888
                            Blocksize: 512
                            Compression: none
                            Dumptime: 2023-05-28 15:11:48 +0100
                            Hostname: Router-8.*******.me
                            Magic: FreeBSD Text Dump
                            Version String: FreeBSD 14.0-CURRENT #1 plus-RELENG_23_05-n256102-7cd3d043045: Mon May 22 15:33:52 UTC 2023
                              root@freebsd:/var/jenkins/workspace/pfSense-Plus-snapshots-23_05-main/obj/amd64/LkEyii3W/var/j
                            Panic String: page fault
                            Dump Parity: 276046082
                            Bounds: 0
                            Dump Status: good
                          
                          Filename: /var/crash/textdump.tar.0
                          ddb.txt���������������������������������������������������������������������������������������������0600����0�������0�������605706������14434660444�  7126� �����������������������������������������������������������������������������������������������������ustar���root����������������������������wheel������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������db:0:kdb.enter.default>  run pfs
                          db:1:pfs> bt
                          Tracing pid 3281 tid 100913 td 0xfffffe00cfe3e3a0
                          kdb_enter() at kdb_enter+0x32/frame 0xfffffe00cfdc4800
                          vpanic() at vpanic+0x183/frame 0xfffffe00cfdc4850
                          panic() at panic+0x43/frame 0xfffffe00cfdc48b0
                          trap_fatal() at trap_fatal+0x409/frame 0xfffffe00cfdc4910
                          trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00cfdc4970
                          calltrap() at calltrap+0x8/frame 0xfffffe00cfdc4970
                          --- trap 0xc, rip = 0xffffffff80f5a036, rsp = 0xfffffe00cfdc4a40, rbp = 0xfffffe00cfdc4a70 ---
                          in6_selecthlim() at in6_selecthlim+0x96/frame 0xfffffe00cfdc4a70
                          tcp_default_output() at tcp_default_output+0x1ded/frame 0xfffffe00cfdc4c60
                          tcp_output() at tcp_output+0x14/frame 0xfffffe00cfdc4c80
                          tcp6_usr_connect() at tcp6_usr_connect+0x2f4/frame 0xfffffe00cfdc4d10
                          soconnectat() at soconnectat+0x9e/frame 0xfffffe00cfdc4d60
                          kern_connectat() at kern_connectat+0xc9/frame 0xfffffe00cfdc4dc0
                          sys_connect() at sys_connect+0x75/frame 0xfffffe00cfdc4e00
                          amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00cfdc4f30
                          fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00cfdc4f30
                          --- syscall (98, FreeBSD ELF64, connect), rip = 0x800fddc8a, rsp = 0x7fffdfbfbc98, rbp = 0x7fffdfbfbcd0 ---
                          db:1:pfs>
                          

                          Fourth:

                          Crash report details:
                          
                          No PHP errors found.
                          
                          Filename: /var/crash/info.0
                          Dump header from device: /dev/nvd0p3
                            Architecture: amd64
                            Architecture Version: 4
                            Dump Length: 230400
                            Blocksize: 512
                            Compression: none
                            Dumptime: 2023-05-28 15:17:27 +0100
                            Hostname: Router-8.*******.me
                            Magic: FreeBSD Text Dump
                            Version String: FreeBSD 14.0-CURRENT #1 plus-RELENG_23_05-n256102-7cd3d043045: Mon May 22 15:33:52 UTC 2023
                              root@freebsd:/var/jenkins/workspace/pfSense-Plus-snapshots-23_05-main/obj/amd64/LkEyii3W/var/j
                            Panic String: page fault
                            Dump Parity: 1131880706
                            Bounds: 0
                            Dump Status: good
                          
                          Filename: /var/crash/textdump.tar.0
                          ddb.txt���������������������������������������������������������������������������������������������0600����0�������0�������607520������14434661167�  7125� �����������������������������������������������������������������������������������������������������ustar���root����������������������������wheel������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������db:0:kdb.enter.default>  run pfs
                          db:1:pfs> bt
                          Tracing pid 2 tid 100041 td 0xfffffe0085264560
                          kdb_enter() at kdb_enter+0x32/frame 0xfffffe00850ad910
                          vpanic() at vpanic+0x183/frame 0xfffffe00850ad960
                          panic() at panic+0x43/frame 0xfffffe00850ad9c0
                          trap_fatal() at trap_fatal+0x409/frame 0xfffffe00850ada20
                          trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00850ada80
                          calltrap() at calltrap+0x8/frame 0xfffffe00850ada80
                          --- trap 0xc, rip = 0xffffffff80f5a036, rsp = 0xfffffe00850adb50, rbp = 0xfffffe00850adb80 ---
                          in6_selecthlim() at in6_selecthlim+0x96/frame 0xfffffe00850adb80
                          tcp_default_output() at tcp_default_output+0x1ded/frame 0xfffffe00850add70
                          tcp_timer_rexmt() at tcp_timer_rexmt+0x514/frame 0xfffffe00850addd0
                          tcp_timer_enter() at tcp_timer_enter+0x102/frame 0xfffffe00850ade10
                          softclock_call_cc() at softclock_call_cc+0x13c/frame 0xfffffe00850adec0
                          softclock_thread() at softclock_thread+0xe9/frame 0xfffffe00850adef0
                          fork_exit() at fork_exit+0x7d/frame 0xfffffe00850adf30
                          fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00850adf30
                          --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
                          db:1:pfs>
                          

                          The 'solved' status on Redline may need revising:
                          https://redmine.pfsense.org/issues/14164

                          Sorry to be the bearer of this news. It is an awkward fault to have as even a small interrupt from my ISP can trigger the router to crash.

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

                            Urgh, that's disappointing. That looks like two slightly different crashes though. Do you see anything other than the two backtraces shown above?

                            I reopened it.

                            Steve

                            RobbieTTR 1 Reply Last reply Reply Quote 0
                            • RobbieTTR
                              RobbieTT @stephenw10
                              last edited by

                              @stephenw10
                              There should be 4 back-traces shown above but I have full captures for all 4 events that I can send to you, if that would help.

                              I hope you remember that it's a Bank Holiday Steve, so feel free to enjoy it instead. 👍

                              Rob

                              1 Reply Last reply Reply Quote 0
                              • RobbieTTR
                                RobbieTT
                                last edited by

                                New tracking ID on Redmine:

                                https://redmine.pfsense.org/issues/14431

                                ☕️

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

                                  We think we have found the cause here and have a test kernel to confirm it. It is only a test at this point though.

                                  Are you able to test that? So far we have not been able to replicate this locally.

                                  RobbieTTR 1 Reply Last reply Reply Quote 1
                                  • RobbieTTR
                                    RobbieTT @stephenw10
                                    last edited by

                                    @stephenw10 said in Netgate 6100 Crash On Interface Change - Not Resolved (IPv6 + PPPoE):

                                    Are you able to test that?

                                    Yes of course. If you tell me how to load it, at what logging verbosity and which log extracts you would like to receive I will test it as soon as the network traffic allows.

                                    Do you have an overview of the kernel changes?

                                    ☕️

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

                                      The changes here are to the interface handling in kernel. So mostly to sys/net/if.c and sys/netinet6/in6.c

                                      They are a test only at this point and would need streamlining before including upstream. But running this should prove if this is what you're hitting.

                                      Test Kernel:
                                      Removed after finding a new bug.

                                      Move /boot/kernel to a backup:

                                      mv /boot/kernel /boot/kernel.old2
                                      

                                      Upload the tgz to /boot and then extract it there:

                                      tar -xzf kernel-amd64-inet6-panic.tgz
                                      

                                      Then reboot into that. Confirm you're running that after booting:

                                      [23.05-RELEASE][root@6100-3.stevew.lan]/root: uname -a
                                      FreeBSD 6100-3.stevew.lan 14.0-CURRENT FreeBSD 14.0-CURRENT inet6_backport-n256104-f5556386d38 pfsense-NODEBUG amd64
                                      

                                      I've been running it here no problem but I couldn't hit the issue before hand so have a recovery solution in place! 😉

                                      If you can test that and it no-longer hits that issue though we can get a long-term solution upstreamed.

                                      Steve

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

                                        We found a bug in that test code and are working on something new.

                                        I don't recommend running that yet.

                                        RobbieTTR 2 Replies Last reply Reply Quote 0
                                        • RobbieTTR
                                          RobbieTT @stephenw10
                                          last edited by

                                          @stephenw10 said in Netgate 6100 Crash On Interface Change - Not Resolved (IPv6 + PPPoE):

                                          I don't recommend running that yet.

                                          Ok, understood. 👍

                                          ☕️

                                          1 Reply Last reply Reply Quote 0
                                          • RobbieTTR
                                            RobbieTT @stephenw10
                                            last edited by

                                            @stephenw10

                                            Hi Steve,
                                            Any progress with this issue as I am close to removing the Netgate 6100 from production use?

                                            The recent changes do not appear to have changed anything of note, albeit the more random reboots no longer produce a crash log. There has not been much encouraging news on the associated redmine tracker either.

                                            I'm not looking to dispose or return the 6100 when I change to a different vendor so it will be available for testing. I'm hoping to remain with Netgate but I am sure you appreciate that as a UK user the issue with PPPoE / IPv6 cannot be sustained.

                                            ☕️

                                            1 Reply Last reply Reply Quote 0
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