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    Intel Pro/1000 VT hard lock

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    • S
      shutch
      last edited by shutch

      Hi all,

      I seem to be getting this strange kernel panic when traffic is going from WAN<->LAN. I am using an HP T730 thin client with a Dell YT674 (Intel Pro/1000 VT) quad port NIC.

      Using the pfsense shell I can pipe a download to /dev/null with no apparent errors. However, as soon as I run a speedtest on the LAN computer, pfsense hard locks (no traffic, shell freezes, hard reboot required).

      The crash reporter on restart shows the following:

      <118>pfSense 2.4.4-RELEASE amd64 Thu Sep 20 09:03:12 EDT 2018
      <118>Bootup complete
      spin lock 0xffffffff82ba9a40 (smp rendezvous) held by 0xfffff801b0b8b000 (tid 100546) too long
      timeout stopping cpus
      panic: spin lock held too long
      cpuid = 3
      KDB: enter: panic
      panic.txt0600002713360263234  7141 ustarrootwheelspin lock held too longversion.txt06000030313360263234  7611 ustarrootwheelFreeBSD 11.2-RELEASE-p3 #17 e6b497fa0a3(RELENG_2_4_4): Thu Sep 20 09:04:45 EDT 2018
          root@buildbot3:/crossbuild/ce-244/obj/amd64/WvDslnYb/crossbuild/ce-244/pfSense/tmp/FreeBSD-src/sys/pfSense
      

      Any thoughts would be appreciated.

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Disable all hardware off-loading if you haven't done so already.

        Try increasing mbufs or reducing the queues to 1:
        https://www.netgate.com/docs/pfsense/hardware/tuning-and-troubleshooting-network-cards.html?highlight=tuning#intel-igb-4-and-em-4-cards

        Unforrunately the VT is probably the only Intel card I've heard bad things about:

        @jasonlitka said in UPG 2.1 -> 2.1.1.: extremely high latency & package loss Intel IGB:

        If that doesn't fix it then light the card on fire and buy a i350. The fewer VT cards that remain in this world the better.

        This seems to be exactly the same setup you have and they ended up replacing the card:
        https://www.reddit.com/r/PFSENSE/comments/864mos/help_troubleshooting_kernel_panic/

        Steve

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        • S
          shutch
          last edited by

          Thanks @stephenw10. As an update to this, I replaced the Intel Pro/1000 VT to an HP NC365T and all issues have been resolved.

          Thanks!

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