[Bug 228501] [VIMAGE JAIL] panic: negative refcount 0xfffff8002717643c (when stopping jail)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228501

--- Comment #10 from Marie Helene Kvello-Aune <marieheleneka at gmail.com> ---
Does this shed some light on the issue?

----
#0  doadump (textdump=1) at pcpu.h:231
231     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) #0  doadump (textdump=1) at pcpu.h:231
#1  0xffffffff80b747d2 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:446
#2  0xffffffff80b74db3 in vpanic (fmt=<value optimized out>,
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:863
#3  0xffffffff80b74b20 in kassert_panic (fmt=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:749

#4  0xffffffff80c74505 in ifa_free (ifa=0xfffff80022f8c400) at refcount.h:65
#5  0xffffffff80cf9420 in in_difaddr_ioctl (cmd=2149607705,
    data=<value optimized out>, ifp=0xfffff80034428000,
    td=<value optimized out>) at /usr/src/sys/netinet/in.c:648

#6  0xffffffff80cf9c1f in in_ifscrub_all () at /usr/src/sys/netinet/in.c:250
#7  0xffffffff80d0bf4d in ip_destroy (unused=<value optimized out>)
    at /usr/src/sys/netinet/ip_input.c:398
#8  0xffffffff80ca74ec in vnet_destroy (vnet=0xfffff8000408ed40)
    at /usr/src/sys/net/vnet.c:597
#9  0xffffffff80b3b6ad in prison_deref (pr=0xffffffff81b0fae0, flags=20)
    at /usr/src/sys/kern/kern_jail.c:2630
#10 0xffffffff80bd027c in taskqueue_run_locked (queue=0xfffff8000461c000)
    at /usr/src/sys/kern/subr_taskqueue.c:465
#11 0xffffffff80bd1048 in taskqueue_thread_loop (arg=<value optimized out>)
    at /usr/src/sys/kern/subr_taskqueue.c:757
#12 0xffffffff80b33ea4 in fork_exit (
    callout=0xffffffff80bd0fc0 <taskqueue_thread_loop>,
    arg=0xffffffff82024dd0, frame=0xfffffe0077b969c0)
    at /usr/src/sys/kern/kern_fork.c:1039
#13 0xffffffff8101f99e in fork_trampoline ()
    at /usr/src/sys/amd64/amd64/exception.S:971
#14 0x0000000000000000 in ?? ()
Current language:  auto; currently minimal
(kgdb)

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