[Bug 234567] FreeBSD 12.0: periodically crashes (UDP?)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234567

            Bug ID: 234567
           Summary: FreeBSD 12.0: periodically crashes (UDP?)
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: d8zNeCFG at aon.at

Created attachment 200707
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=200707&action=edit
boot messages - dmesg.boot

Since upgrading three of my machines from 11.2 to 12.0, one of them (the
oldest) periodically crashes.

kgdb shows the following:

(kgdb) where
#0  doadump (textdump=1) at pcpu.h:230
#1  0xffffffff80498950 in kern_reboot (howto=260)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:446
#2  0xffffffff80498de3 in vpanic (fmt=<value optimized out>, 
    ap=<value optimized out>)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:872
#3  0xffffffff80498bd3 in panic (fmt=<value optimized out>)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:799
#4  0xffffffff8073bf3f in trap_fatal (frame=0xfffffe0000472820, eva=211)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/trap.c:929
#5  0xffffffff8073bf99 in trap_pfault (frame=0xfffffe0000472820, usermode=0)
    at pcpu.h:230
#6  0xffffffff8073b5be in trap (frame=0xfffffe0000472820)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/trap.c:441
#7  0xffffffff807180b5 in calltrap ()
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/exception.S:232
#8  0xffffffff8052bf5b in sowakeup (so=0x0, sb=<value optimized out>)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/uipc_sockbuf.c:339
#9  0xffffffff80606aa2 in udp_append (inp=<value optimized out>, 
    ip=<value optimized out>, n=<value optimized out>, off=28, 
    udp_in=0xfffffe0000472990)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/netinet/udp_usrreq.c:385
#10 0xffffffff8060642b in udp_input (mp=<value optimized out>, 
    offp=<value optimized out>, proto=17)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/netinet/udp_usrreq.c:747
#11 0xffffffff805d76a8 in ip_input (m=0x0)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/netinet/ip_input.c:827
#12 0xffffffff805b3353 in swi_net (arg=<value optimized out>)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/net/netisr.c:901
#13 0xffffffff804621b7 in ithread_loop (arg=<value optimized out>)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_intr.c:1043
#14 0xffffffff8045efb3 in fork_exit (
    callout=0xffffffff80462010 <ithread_loop>, arg=0xfffff8000204a920, 
    frame=0xfffffe0000472c00)
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_fork.c:1057
#15 0xffffffff8071909e in fork_trampoline ()
    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/exception.S:993
#16 0x0000000000000000 in ?? ()
Current language:  auto; currently minimal
(kgdb) 

Attached: dmesg.boot.

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