[Bug 234296] FreeBSD 12.0-STABLE r342216 Fatal trap 12

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234296

            Bug ID: 234296
           Summary: FreeBSD 12.0-STABLE r342216 Fatal trap 12
           Product: Base System
           Version: 12.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: chernov_victor at list.ru

Created attachment 200391
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=200391&action=edit
one of the logs of dump

Hello!

After upgrading servers to FreeBSD 12 stable, the server goes into a reboot,
this problem is manifested on 5 servers out of 8 updated, the server data is
used as gateways

part of the dump of one of the servers

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x0
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff805dd478
stack pointer           = 0x0:0xfffffe0094f65aa0
frame pointer           = 0x0:0xfffffe0094f65b10
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = resume, IOPL = 0
current process         = 41176 (ipfw)
trap number             = 12
panic: page fault
cpuid = 0
time = 1545493415
KDB: stack backtrace:
#0 0xffffffff8060c007 at kdb_backtrace+0x67
#1 0xffffffff805c3ab3 at vpanic+0x1a3
#2 0xffffffff805c3903 at panic+0x43
#3 0xffffffff808e2d5f at trap_fatal+0x35f
#4 0xffffffff808e2db9 at trap_pfault+0x49
#5 0xffffffff808e23fe at trap+0x29e
#6 0xffffffff808bfd15 at calltrap+0x8
#7 0xffffffff80918768 at handleevents+0x1a8
#8 0xffffffff80918dd9 at timercb+0xa9
#9 0xffffffff80953d1d at lapic_handle_timer+0xad
#10 0xffffffff808c181e at Xtimerint+0xae
Uptime: 12h23m19s

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x0
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff805dd478
stack pointer           = 0x28:0xfffffe0075d5a850
frame pointer           = 0x28:0xfffffe0075d5a8c0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = resume, IOPL = 0
current process         = 11 (idle: cpu0)
trap number             = 12
panic: page fault
cpuid = 0
time = 1545530359
KDB: stack backtrace:
#0 0xffffffff8060c007 at kdb_backtrace+0x67
#1 0xffffffff805c3ab3 at vpanic+0x1a3
#2 0xffffffff805c3903 at panic+0x43
#3 0xffffffff808e2d5f at trap_fatal+0x35f
#4 0xffffffff808e2db9 at trap_pfault+0x49
#5 0xffffffff808e23fe at trap+0x29e
#6 0xffffffff808bfd15 at calltrap+0x8
#7 0xffffffff80918768 at handleevents+0x1a8
#8 0xffffffff80918dd9 at timercb+0xa9
#9 0xffffffff80953d1d at lapic_handle_timer+0xad
#10 0xffffffff808c181e at Xtimerint+0xae
#11 0xffffffff8094a83f at cpu_idle_acpi+0x3f
#12 0xffffffff8094a8f7 at cpu_idle+0xa7
#13 0xffffffff805f6275 at sched_idletd+0x515
#14 0xffffffff8058c683 at fork_exit+0x83
#15 0xffffffff808c0cfe at fork_trampoline+0xe
Uptime: 10h14m40s

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address   = 0x0
fault code              = supervisor read instruction, page not present
instruction pointer     = 0x20:0x0
stack pointer           = 0x28:0xfffffe000048ea88
frame pointer           = 0x28:0xfffffe000048eb30
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         = 12 (swi4: clock (0))
trap number             = 12
panic: page fault
cpuid = 1
time = 1545537943
KDB: stack backtrace:
#0 0xffffffff8060c007 at kdb_backtrace+0x67
#1 0xffffffff805c3ab3 at vpanic+0x1a3
#2 0xffffffff805c3903 at panic+0x43
#3 0xffffffff808e2d5f at trap_fatal+0x35f
#4 0xffffffff808e2db9 at trap_pfault+0x49
#5 0xffffffff808e23fe at trap+0x29e
#6 0xffffffff808bfd15 at calltrap+0x8
#7 0xffffffff805ddbf9 at softclock+0x79
#8 0xffffffff8058f519 at ithread_loop+0x169
#9 0xffffffff8058c683 at fork_exit+0x83
#10 0xffffffff808c0cfe at fork_trampoline+0xe
Uptime: 2h5m2s

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x500b0
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff805dd478
stack pointer           = 0x28:0xfffffe0075df23f0
frame pointer           = 0x28:0xfffffe0075df2460
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = resume, IOPL = 0
current process         = 0 (if_io_tqg_0)
trap number             = 12
panic: page fault
cpuid = 0
time = 1545562751
KDB: stack backtrace:
#0 0xffffffff8060c007 at kdb_backtrace+0x67
#1 0xffffffff805c3ab3 at vpanic+0x1a3
#2 0xffffffff805c3903 at panic+0x43
#3 0xffffffff808e2d5f at trap_fatal+0x35f
#4 0xffffffff808e2db9 at trap_pfault+0x49
#5 0xffffffff808e23fe at trap+0x29e
#6 0xffffffff808bfd15 at calltrap+0x8
#7 0xffffffff80918768 at handleevents+0x1a8
#8 0xffffffff80918dd9 at timercb+0xa9
#9 0xffffffff80953d1d at lapic_handle_timer+0xad
#10 0xffffffff808c181e at Xtimerint+0xae
#11 0xffffffff806488c2 at m_dup+0x182
#12 0xffffffff806f7c2d at ng_tee_rcvdata+0x3d
#13 0xffffffff806ed419 at ng_apply_item+0x2f9
#14 0xffffffff806eced0 at ng_snd_item+0x130
#15 0xffffffff806f0c5c at ng_ether_input+0x4c
#16 0xffffffff806c200d at ether_nh_input+0x1dd
#17 0xffffffff806d9aa6 at netisr_dispatch_src+0xd6
Uptime: 6h52m21s

sorry for my English

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