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    Crash Report - Fatal trap 12: page fault while in kernel mode (lsof)

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    • B
      Be-Bop-Bo
      last edited by

      I have been experiencing random crashes are at least two separate systems, they are the same hardware setup. I have done a little looking around, but I will be honest in saying I am not a FreeBSD expert... I have been putting this off for a bit but really need to get to the bottom of it. Any help is super appreciated.

      TopTon
      Intel(R) N100
      Current: 2015 MHz, Max: 806 MHz
      4 CPUs: 1 package(s) x 4 core(s)
      AES-NI CPU Crypto: Yes (active)
      QAT Crypto: No
      2.7.2-RELEASE (amd64)
      4x Intel i226-v

      Avg Temp ~100F
      RAM - ~50% of 8GB
      HDD - 1% used of 180G (zfs)

      Device 01:
      Fatal trap 12: page fault while in kernel mode
      cpuid = 2; apic id = 04
      fault virtual address = 0x40
      fault code = supervisor read data, page not present
      instruction pointer = 0x20:0xffffffff80ca9140
      stack pointer = 0x28:0xfffffe00b16fc730
      frame pointer = 0x28:0xfffffe00b16fc730
      code segment = base 0x0, limit 0xfffff, type 0x1b
      = DPL 0, pres 1, long 1, def32 0, gran 1
      processor eflags = interrupt enabled, resume, IOPL = 0
      current process = 49398 (lsof)
      rdi: fffff801f3150e00 rsi: fffff801b00beb00 rdx: 0000000000000000
      rcx: ffffffff82d62a40 r8: 0000000000000002 r9: ffffffffffffffff
      rax: 0000000000000000 rbx: fffffe00b16fcbe0 rbp: fffffe00b16fc730
      r10: 0000000000000000 r11: fffffe00b413e1a0 r12: fffffe00b16fc7d8
      r13: fffffe00b413dc80 r14: fffff801f3150e00 r15: fffff801f77a1540
      trap number = 12
      panic: page fault
      cpuid = 2
      time = 1742174470
      KDB: enter: panic

      db:0:kdb.enter.default>  show pcpu
cpuid        = 2
dynamic pcpu = 0xfffffe008ef67f80
curthread    = 0xfffffe00b413dc80: pid 49398 tid 100440 critnest 1 "lsof"
curpcb       = 0xfffffe00b413e1a0
fpcurthread  = 0xfffffe00b413dc80: pid 49398 "lsof"
idlethread   = 0xfffffe0011ee5560: tid 100005 "idle: cpu2"
self         = 0xffffffff84012000
curpmap      = 0xfffff800065afd38
tssp         = 0xffffffff84012384
rsp0         = 0xfffffe00b16fd000
kcr3         = 0xffffffffffffffff
ucr3         = 0xffffffffffffffff
scr3         = 0x0
gs32p        = 0xffffffff84012404
ldt          = 0xffffffff84012444
tss          = 0xffffffff84012434
curvnet      = 0xfffff800012004c0
db:0:kdb.enter.default>  bt
Tracing pid 49398 tid 100440 td 0xfffffe00b413dc80
kdb_enter() at kdb_enter+0x32/frame 0xfffffe00b16fc410
vpanic() at vpanic+0x163/frame 0xfffffe00b16fc540
panic() at panic+0x43/frame 0xfffffe00b16fc5a0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00b16fc600
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00b16fc660
calltrap() at calltrap+0x8/frame 0xfffffe00b16fc660
--- trap 0xc, rip = 0xffffffff80ca9140, rsp = 0xfffffe00b16fc730, rbp = 0xfffffe00b16fc730 ---
prison_check() at prison_check+0x20/frame 0xfffffe00b16fc730
cr_canseeinpcb() at cr_canseeinpcb+0x19/frame 0xfffffe00b16fc760
tcp_pcblist() at tcp_pcblist+0x1f6/frame 0xfffffe00b16fcaf0
sysctl_root_handler_locked() at sysctl_root_handler_locked+0x90/frame 0xfffffe00b16fcb40
sysctl_root() at sysctl_root+0x216/frame 0xfffffe00b16fcbc0
userland_sysctl() at userland_sysctl+0x176/frame 0xfffffe00b16fcc70
kern___sysctlbyname() at kern___sysctlbyname+0x21d/frame 0xfffffe00b16fcdc0
sys___sysctlbyname() at sys___sysctlbyname+0x2d/frame 0xfffffe00b16fce00
amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00b16fcf30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00b16fcf30
--- syscall (570, FreeBSD ELF64, __sysctlbyname), rip = 0x8222c326a, rsp = 0x82092cb88, rbp = 0x82092cbc0 ---
db:0:kdb.enter.default>  ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
54279     1 39114     0  R                                   ping
53801 39669 39114     0  R       CPU 1                       telegraf
53600 39669 39114     0  S       select  0xfffff80120681540  ping
53581 39669 39114     0  R                                   telegraf
53308 39669 39114     0  D       sysctl  0xffffffff82c02d00  ps
52602 39669 39114     0  D       sysctl  0xffffffff82c02d00  lsof
52268 39669 39114     0  R                                   telegraf
52103 39669 39114     0  R       CPU 3                       pgrep
51807 39669 39114     0  D       sysctl  0xffffffff82c02d00  lsof
49398 39669 39114     0  R       CPU 2                       lsof
39669 39114 39114     0  R       (threaded)                  telegraf

      Device 02:
      Fatal trap 12: page fault while in kernel mode
      cpuid = 2; apic id = 04
      fault virtual address = 0x40
      fault code = supervisor read data, page not present
      instruction pointer = 0x20:0xffffffff80ca9140
      stack pointer = 0x28:0xfffffe01057eb730
      frame pointer = 0x28:0xfffffe01057eb730
      code segment = base 0x0, limit 0xfffff, type 0x1b
      = DPL 0, pres 1, long 1, def32 0, gran 1
      processor eflags = interrupt enabled, resume, IOPL = 0
      current process = 43259 (lsof)
      rdi: fffff8021dd69700 rsi: fffff80193948400 rdx: 0000000000000000
      rcx: ffffffff82d62a40 r8: 0000000000000002 r9: ffffffffffffffff
      rax: 0000000000000000 rbx: fffffe01057ebbe0 rbp: fffffe01057eb730
      r10: 00000a1944f62158 r11: fffffe011c81ec60 r12: fffffe01057eb7d8
      r13: fffffe011c81e740 r14: fffff8021dd69700 r15: fffff802b52f3000
      trap number = 12
      panic: page fault
      cpuid = 2
      time = 1741776490
      KDB: enter: panic

      db:0:kdb.enter.default>  show pcpu
cpuid        = 2
dynamic pcpu = 0xfffffe009d500f80
curthread    = 0xfffffe011c81e740: pid 43259 tid 102977 critnest 1 "lsof"
curpcb       = 0xfffffe011c81ec60
fpcurthread  = 0xfffffe011c81e740: pid 43259 "lsof"
idlethread   = 0xfffffe0020490560: tid 100005 "idle: cpu2"
self         = 0xffffffff84012000
curpmap      = 0xfffff80447150398
tssp         = 0xffffffff84012384
rsp0         = 0xfffffe01057ec000
kcr3         = 0xffffffffffffffff
ucr3         = 0xffffffffffffffff
scr3         = 0x0
gs32p        = 0xffffffff84012404
ldt          = 0xffffffff84012444
tss          = 0xffffffff84012434
curvnet      = 0xfffff80001240480
db:0:kdb.enter.default>  bt
Tracing pid 43259 tid 102977 td 0xfffffe011c81e740
kdb_enter() at kdb_enter+0x32/frame 0xfffffe01057eb410
vpanic() at vpanic+0x163/frame 0xfffffe01057eb540
panic() at panic+0x43/frame 0xfffffe01057eb5a0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe01057eb600
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe01057eb660
calltrap() at calltrap+0x8/frame 0xfffffe01057eb660
--- trap 0xc, rip = 0xffffffff80ca9140, rsp = 0xfffffe01057eb730, rbp = 0xfffffe01057eb730 ---
prison_check() at prison_check+0x20/frame 0xfffffe01057eb730
cr_canseeinpcb() at cr_canseeinpcb+0x19/frame 0xfffffe01057eb760
tcp_pcblist() at tcp_pcblist+0x1f6/frame 0xfffffe01057ebaf0
sysctl_root_handler_locked() at sysctl_root_handler_locked+0x90/frame 0xfffffe01057ebb40
sysctl_root() at sysctl_root+0x216/frame 0xfffffe01057ebbc0
userland_sysctl() at userland_sysctl+0x176/frame 0xfffffe01057ebc70
kern___sysctlbyname() at kern___sysctlbyname+0x21d/frame 0xfffffe01057ebdc0
sys___sysctlbyname() at sys___sysctlbyname+0x2d/frame 0xfffffe01057ebe00
amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe01057ebf30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01057ebf30
--- syscall (570, FreeBSD ELF64, __sysctlbyname), rip = 0x8239fd26a, rsp = 0x8208318e8, rbp = 0x820831920 ---
db:0:kdb.enter.default>  ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
43867 86475 86226     0  R                                   telegraf
43692 86475 86226     0  R       CPU -1                      ping
43520 86475 86226     0  R                                   telegraf
43405 86475 86226     0  D       sysctl  0xffffffff82c02d00  lsof
43261 86475 86226     0  R                                   lsof
43259 86475 86226     0  R       CPU 2                       lsof
41994 31844   399     0  S       nanslp  0xffffffff83063d63  sleep
31844 98056   399     0  S       wait    0xfffffe002048e5c0  sh
 1431 64500   399     0  S       nanslp  0xffffffff83063d61  sleep
86475 86226 86226     0  R       (threaded)                  telegraf
      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by stephenw10

        Hmm, not a crash I've seen before. Are you running lsof manually to trigger it?

        What packages do you have installed? lsof is not included in 2.7.2 by default.

        B 1 Reply Last reply Reply Quote 0
        • B
          Be-Bop-Bo @stephenw10
          last edited by

          @stephenw10
          I am not running it manually, so honestly I am not really sure what is using it. I do have a couple manual scripts running to populate some Grafana dashboards that collect a fair amount of stats, but I do not remember installing lsof for it's use. Reviewing the bash scripts I do not see it listed.

          Running ps -ax does not show a lsof as of now

          Packages:
          Acme
          apcupsd
          iperf
          nmap
          ntopng
          pfblockerng
          service_watchdog
          suricata
          telegraf
          wireguard

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

            Hmm, it appears lsof is a dependency of Telegraf: https://github.com/pfsense/FreeBSD-ports/blob/devel/net-mgmt/pfSense-pkg-Telegraf/Makefile#L17

            How do you have it configured?

            B 1 Reply Last reply Reply Quote 0
            • B
              Be-Bop-Bo @stephenw10
              last edited by

              @stephenw10
              Sure here is what I have. I will note that at the bottom there is a listed Github project, and files that should have been called; however, I did not replace them when I migrated to the Topton mini-pc from my old 1U atom that I had been using for the last +8 years.

              But from what you have shown it should be localized to the Telegraf package, so that really helps.

              [[inputs.net]]
  interfaces = ["igc0", "igc1", "igc2", "igc3","tun_wg0", "tun_wg1", "tun_wg2", "tun_wg3"]
[[inputs.conntrack]]
[[inputs.filestat]]
[[inputs.internal]]
[[inputs.interrupts]]
[[inputs.linux_sysctl_fs]]
[[inputs.net]]
[[inputs.net_response]]
  protocol = "tcp"
  address = "localhost:443"
[[inputs.netstat]]
[[inputs.nstat]]
[[inputs.procstat]]
  pattern = "."
  prefix = "pgrep_serviceprocess"

 [[inputs.dns_query]]
#   ## servers to query
#   servers = ["8.8.8.8"]
     servers = ["208.67.222.222"]


[[inputs.netstat]]
#   # no configuration

# Read metrics about swap memory usage
[[inputs.swap]]
  # no configuration

[[inputs.ping]]
#   ## Hosts to send ping packets to.
     urls = ["208.67.222.222"]
#
#   ## Method used for sending pings, can be either "exec" or "native".  When set
#   ## to "exec" the systems ping command will be executed.  When set to "native"
#   ## the plugin will send pings directly.
#   ##
#   ## While the default is "exec" for backwards compatibility, new deployments
#   ## are encouraged to use the "native" method for improved compatibility and
#   ## performance.
#   # method = "exec"
#
#   ## Number of ping packets to send per interval.  Corresponds to the "-c"
#   ## option of the ping command.
#   # count = 1
#
#   ## Time to wait between sending ping packets in seconds.  Operates like the
#   ## "-i" option of the ping command.
#   # ping_interval = 1.0
#
#   ## If set, the time to wait for a ping response in seconds.  Operates like
#   ## the "-W" option of the ping command.
#   # timeout = 1.0
#
#   ## If set, the total ping deadline, in seconds.  Operates like the -w option
#   ## of the ping command.
#   # deadline = 10
#
#   ## Interface or source address to send ping from.  Operates like the -I or -S
#   ## option of the ping command.
#   # interface = ""
#
#   ## Specify the ping executable binary.
#   # binary = "ping"
#
#   ## Arguments for ping command. When arguments is not empty, the command from
#   ## the binary option will be used and other options (ping_interval, timeout,
#   ## etc) will be ignored.
#   # arguments = ["-c", "3"]
#
#   ## Use only IPv6 addresses when resolving a hostname.
#   # ipv6 = false

####################
## GIT: https://github.com/VictorRobellini/pfSense-Dashboard
[[inputs.exec]]
   commands = [
     "/usr/local/bin/telegraf_pfinterface.php",
     "/usr/local/bin/telegraf_gateways.py",
      "/usr/local/bin/telegraf_pfifgw.php",
      "sh /usr/local/bin/telegraf_temperature.sh",
      "sh /usr/local/bin/telegraf_pinger_loss.sh"
   ]
   data_format = "influx"

[[inputs.logparser]]
  files = ["/var/log/pfblockerng/dnsbl.log"]
  from_beginning=true
  [inputs.logparser.grok]
    measurement = "dnsbl_log"
    patterns = ["^%{WORD:BlockType}-%{WORD:BlockSubType},%{SYSLOGTIMESTAMP:timestamp:ts-syslog},%{IPORHOST:destination:tag},%{IPORHOST:source:tag},%{GREEDYDATA:call},%{WORD:BlockMethod},%{WORD:BlockList},%{IPORHOST:tld:tag},%{WORD:DefinedList:tag},%{GREEDYDATA:hitormiss}"]
    timezone = "Local"
    [inputs.logparser.tags]
      value = "1"

[[inputs.logparser]]
    files = ["/var/log/pfblockerng/ip_block.log"]
    from_beginning=true
    [inputs.logparser.grok]
        measurement = "ip_block_log"
        patterns = ["^%{SYSLOGTIMESTAMP:timestamp:ts-syslog},%{NUMBER:TrackerID},%{GREEDYDATA:Interface},%{WORD:InterfaceName},%{WORD:action},%{NUMBER:IPVersion},%{NUMBER:ProtocolID},%{GREEDYDATA:Protocol},%{IPORHOST:SrcIP:tag},%{IPORHOST:DstIP:tag},%{NUMBER:SrcPort},%{NUMBER:DstPort},%{WORD:Dir},%{WORD:GeoIP:tag},%{GREEDYDATA:AliasName},%{GREEDYDATA:IPEvaluated},%{GREEDYDATA:FeedName:tag},%{HOSTNAME:ResolvedHostname},%{HOSTNAME:ClientHostname},%{GREEDYDATA:ASN},%{GREEDYDATA:DuplicateEventStatus}"]
        timezone = "Local"

[[inputs.unbound]]
  server = "127.0.0.1:953"
  binary = "/usr/local/bin/telegraf_unbound.sh"
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