panic: Assertion *(uint64_t *)&ifp->if_addr_et == 0 failed at /usr/src/sys/net/if.c:1763
cpuid = 0
time = 1531727305
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe008d7f74b0
vpanic() at vpanic+0x1a3/frame 0xfffffe008d7f7510
doadump() at doadump/frame 0xfffffe008d7f7590
if_addr_rlock() at if_addr_rlock+0x4e/frame 0xfffffe008d7f75b0
ieee80211_ioctl() at ieee80211_ioctl+0x3ff/frame 0xfffffe008d7f7650
ifioctl() at ifioctl+0x1ae8/frame 0xfffffe008d7f7750
kern_ioctl() at kern_ioctl+0x2b9/frame 0xfffffe008d7f77b0
sys_ioctl() at sys_ioctl+0x15e/frame 0xfffffe008d7f7880
amd64_syscall() at amd64_syscall+0x281/frame 0xfffffe008d7f79b0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe008d7f79b0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80083ae0a, rsp = 0x7fffffffe7d8, rbp = 0x7fffffffe830 ---
KDB: enter: panic

__curthread () at ./machine/pcpu.h:230
230             __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) #0  __curthread () at ./machine/pcpu.h:230
#1  doadump (textdump=-1921027904) at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff803afc4c in db_fncall_generic (addr=<optimized out>, 
    rv=<optimized out>, nargs=<optimized out>, args=<optimized out>)
    at /usr/src/sys/ddb/db_command.c:609
#3  db_fncall (dummy1=<optimized out>, dummy2=<optimized out>, 
    dummy3=<optimized out>, dummy4=<optimized out>)
    at /usr/src/sys/ddb/db_command.c:657
#4  0xffffffff803af789 in db_command (last_cmdp=<optimized out>, 
    cmd_table=<optimized out>, dopager=<optimized out>)
    at /usr/src/sys/ddb/db_command.c:481
#5  0xffffffff803b45c8 in db_script_exec (scriptname=<optimized out>, 
    warnifnotfound=<optimized out>) at /usr/src/sys/ddb/db_script.c:304
#6  0xffffffff803b4413 in db_script_kdbenter (eventname=<optimized out>)
    at /usr/src/sys/ddb/db_script.c:326
#7  0xffffffff803b272a in db_trap (type=<optimized out>, code=<optimized out>)
    at /usr/src/sys/ddb/db_main.c:251
#8  0xffffffff8062f6f3 in kdb_trap (type=3, code=0, tf=<optimized out>)
    at /usr/src/sys/kern/subr_kdb.c:693
#9  0xffffffff809718d5 in trap (frame=0xfffffe008d7f73e0)
    at /usr/src/sys/amd64/amd64/trap.c:605
#10 <signal handler called>
#11 kdb_enter (why=0xffffffff80a7362d "panic", msg=<optimized out>)
    at /usr/src/sys/kern/subr_kdb.c:479
#12 0xffffffff805e53f0 in vpanic (fmt=<optimized out>, ap=0xfffffe008d7f7550)
    at /usr/src/sys/kern/kern_shutdown.c:852
#13 0xffffffff805e51a0 in kassert_panic (
    fmt=0xffffffff80a0ead5 "Assertion %s failed at %s:%d")
    at /usr/src/sys/kern/kern_shutdown.c:749
#14 0xffffffff806eaa6e in if_addr_rlock (ifp=<optimized out>)
    at /usr/src/sys/net/if.c:1763
#15 0xffffffff8073b36f in ieee80211_ioctl (ifp=0xfffff8000dd3f800, 
    cmd=<optimized out>, data=<optimized out>)
    at /usr/src/sys/net80211/ieee80211_ioctl.c:3541
#16 0xffffffff806ed998 in ifhwioctl (ifp=<optimized out>, td=<optimized out>, 
    cmd=<optimized out>, data=<optimized out>) at /usr/src/sys/net/if.c:2661
#17 ifioctl (so=<optimized out>, cmd=<optimized out>, data=<optimized out>, 
    td=0xfffff80009310000) at /usr/src/sys/net/if.c:3081
#18 0xffffffff806563e9 in fo_ioctl (fp=<optimized out>, com=<optimized out>, 
    active_cred=0x80, td=<optimized out>, data=<optimized out>)
    at /usr/src/sys/sys/file.h:330
#19 kern_ioctl (td=0xfffff80009310000, fd=<optimized out>, 
    com=<optimized out>, data=0xfffffe008d7f73a0 "")
    at /usr/src/sys/kern/sys_generic.c:800
#20 0xffffffff806560be in sys_ioctl (td=0xfffff80009310000, 
    uap=0xfffff800093103c0) at /usr/src/sys/kern/sys_generic.c:712
#21 0xffffffff80972661 in syscallenter (td=0xfffff80009310000)
    at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135
#22 amd64_syscall (td=0xfffff80009310000, traced=0)
    at /usr/src/sys/amd64/amd64/trap.c:1007
#23 <signal handler called>
#24 0x000000080083ae0a in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffe7d8
(kgdb)