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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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    • 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
                            • stephenw10S
                              stephenw10 Netgate Administrator
                              last edited by

                              Were you able to test a 23.09 snapshot?

                              Indeed I agree that here in the UK that's combo many, many people are running. Including me.

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

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

                                Were you able to test a 23.09 snapshot?

                                No I didn't, for a couple of reasons. The first is a general reluctance to run snapshots on a live production network and, secondly, there being no changes listed in v23.09 that suggest a possible fix.

                                A month ago Kristof Provost posted that he was unable to reproduce the fault, which was a concern.

                                That said, if you think a particular snapshot might help or at least add useful data please drop me a link and I will give it a go.

                                ☕️

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

                                  Mainly because if you can replicate it in 23.09 then we can can test with that to try and replicate it here. Otherwise we need to keep trying in 23.05.1 and that makes it more difficult because all the development is in 23.09 at the moment. And there's a chance it's already fixed in 23.09. Though I agree there hasn't been anything specific gone in.

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

                                    @stephenw10

                                    Ok, that all makes sense.

                                    A bit of a pain to achieve though. It took countless refresh attempts to get beyond this stage, until pfSense 'found' the things it needed:

                                     2023-08-31 at 16.31.49.png

                                    Still, it eventually 'just worked' and all loaded just fine:

                                     2023-08-31 at 16.51.51.png

                                    It didn't crash on first interface change, so at least there is that. 🙃

                                    ☕️

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

                                      Ok, cool. There's a routing issue with v6 at the pkg server our guys are working on. And we know you're using v6! Should be resolved shortly.

                                      Let us know if you hit it in 23.09. Thanks 👍

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

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

                                        Let us know if you hit it in 23.09. Thanks 👍

                                        Will do.

                                        It survived 5 interface changes with no issue, before I ran out of time / actively complained at.

                                        ☕️

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

                                          @stephenw10

                                          The issue persists with the latest dev snapshot. This crash was triggered by taking the WAN interface down & up again:

                                          db:1:pfs> bt
                                          Tracing pid 2 tid 100041 td 0xfffffe0085272560
                                          kdb_enter() at kdb_enter+0x32/frame 0xfffffe00850c5840
                                          vpanic() at vpanic+0x163/frame 0xfffffe00850c5970
                                          panic() at panic+0x43/frame 0xfffffe00850c59d0
                                          trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00850c5a30
                                          trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00850c5a90
                                          calltrap() at calltrap+0x8/frame 0xfffffe00850c5a90
                                          --- trap 0xc, rip = 0xffffffff80f4d9e6, rsp = 0xfffffe00850c5b60, rbp = 0xfffffe00850c5b90 ---
                                          in6_selecthlim() at in6_selecthlim+0x96/frame 0xfffffe00850c5b90
                                          tcp_default_output() at tcp_default_output+0x1d97/frame 0xfffffe00850c5d70
                                          tcp_timer_rexmt() at tcp_timer_rexmt+0x52f/frame 0xfffffe00850c5dd0
                                          tcp_timer_enter() at tcp_timer_enter+0x101/frame 0xfffffe00850c5e10
                                          softclock_call_cc() at softclock_call_cc+0x134/frame 0xfffffe00850c5ec0
                                          softclock_thread() at softclock_thread+0xe9/frame 0xfffffe00850c5ef0
                                          fork_exit() at fork_exit+0x7f/frame 0xfffffe00850c5f30
                                          fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00850c5f30
                                          --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
                                          

                                          All hopes of an accidental fix were suddenly dashed...

                                          I have full logs, should you need them.

                                          ☕️

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

                                            Urgh. Ok, thanks. Let me see if ours guys would like to review....

                                            RobbieTTR 1 Reply Last reply Reply Quote 0
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