panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 322
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*415566 78809 0 0x2 0 1K ifconfig
393051 92768 77 0x100012 0x1 0 dhcpleased
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83437184) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833e7c54,ffffffff833be4e8,142,ffffffff833c7d23) at __assert+0x29
tun_clone_destroy(ffff80000147f000) at tun_clone_destroy+0x38a sys/net/if_tun.c:322
if_clone_destroy(ffff80003c4f3eb0) at if_clone_destroy+0x1d7 sys/net/if.c:1383
ifioctl(ffff80000153ab98,80206979,ffff80003c4f3eb0,ffff80002a498558) at ifioctl+0x5c5
sys_ioctl(ffff80002a498558,ffff80003c4f4090,ffff80003c4f3fe0) at sys_ioctl+0x5c3
syscall(ffff80003c4f4090) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4f4090) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a1fe5b24680, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 322
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83437184) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833e7c54,ffffffff833be4e8,142,ffffffff833c7d23) at __assert+0x29
tun_clone_destroy(ffff80000147f000) at tun_clone_destroy+0x38a sys/net/if_tun.c:322
if_clone_destroy(ffff80003c4f3eb0) at if_clone_destroy+0x1d7 sys/net/if.c:1383
ifioctl(ffff80000153ab98,80206979,ffff80003c4f3eb0,ffff80002a498558) at ifioctl+0x5c5
sys_ioctl(ffff80002a498558,ffff80003c4f4090,ffff80003c4f3fe0) at sys_ioctl+0x5c3
syscall(ffff80003c4f4090) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4f4090) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a1fe5b24680, count: -9
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003c4f3c60
rbx 0xffff800029aacdc7
rdx 0
rcx 0xffff80002a498558
rax 0xffff800029aabff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc7b0786b0b85eabf
r11 0x2fc586b9e7c5661a
r12 0xffff800029aacbc8
r13 0
r14 0
r15 0x1
rip 0xffffffff821de0f5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003c4f3c50
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (ifconfig) tid=415566 pid=78809 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=86, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a499c68,0xffffffff838b7b48
process=0xffff80003c4edda8 user=0xffff80003c4ef000, vmspace=0xfffffd806ae7e908
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*78809 415566 12597 0 7 0x2 ifconfig
12597 378254 42044 0 3 0x10008a sigsusp sh
42044 3214 26994 0 3 0x82 wait syz-executor
27297 359366 44898 0 3 0x90 nanoslp syz-executor
27297 94504 44898 0 3 0x4000090 kqread syz-executor
27297 446189 44898 0 3 0x4000090 fsleep syz-executor
37253 441804 35607 0 3 0x80 nanoslp syz-executor
37253 523573 35607 0 3 0x4000080 kqsel syz-executor
37253 299028 35607 0 3 0x4000080 kqsel syz-executor
37253 233467 35607 0 3 0x4000080 fsleep syz-executor
99200 497720 64337 0 3 0x80 nanoslp syz-executor
99200 82607 64337 0 3 0x4000080 pppxread syz-executor
99200 127792 64337 0 3 0x4000000 inode syz-executor
99200 117710 64337 0 3 0x4000080 fsleep syz-executor
14864 484631 0 0 3 0x14200 acct acct
84135 42432 0 0 3 0x14280 nfsidl nfsio
91127 88882 0 0 3 0x14280 nfsidl nfsio
72079 518765 0 0 3 0x14280 nfsidl nfsio
33310 21332 0 0 3 0x14280 nfsidl nfsio
15121 110283 0 0 3 0x14280 nfsidl nfsio
1079 261990 0 0 3 0x14280 nfsidl nfsio
28759 79354 0 0 3 0x14280 nfsidl nfsio
73701 79961 0 0 3 0x14280 nfsidl nfsio
98253 390824 0 0 3 0x14280 nfsidl nfsio
6111 312889 0 0 3 0x14280 nfsidl nfsio
21868 364433 0 0 3 0x14280 nfsidl nfsio
60643 183496 0 0 3 0x14280 nfsidl nfsio
52361 136317 0 0 3 0x14280 nfsidl nfsio
60495 195863 0 0 3 0x14280 nfsidl nfsio
65283 271725 0 0 3 0x14280 nfsidl nfsio
12925 327520 0 0 3 0x14280 nfsidl nfsio
86092 13433 0 0 3 0x14280 nfsidl nfsio
83627 261511 0 0 3 0x14280 nfsidl nfsio
66377 319143 0 0 3 0x14280 nfsidl nfsio
72409 85334 0 0 3 0x14280 nfsidl nfsio
64337 40025 26994 0 3 0x82 nanoslp syz-executor
96860 172823 1 0 3 0x100083 ttyin getty
57757 184086 26994 0 3 0x82 wait syz-executor
96472 309783 26994 0 3 0x82 nanoslp syz-executor
66141 401899 0 0 3 0x14200 bored sosplice
98654 330881 26994 0 3 0x2 inode syz-executor
31490 440203 26994 0 3 0x82 wait syz-executor
44898 472165 26994 0 3 0x82 nanoslp syz-executor
35607 275309 26994 0 3 0x82 nanoslp syz-executor
26994 169640 46040 0 3 0x82 kqread syz-executor
46040 330579 26111 0 3 0x10008a sigsusp ksh
26111 253086 49286 0 3 0x98 kqread sshd-session
49286 503575 4739 0 3 0x92 kqread sshd-session
4739 49925 1 0 3 0x88 kqread sshd
29688 134953 1197 74 3 0x1100092 bpf pflogd
1197 22842 1 0 3 0x80 sbwait pflogd
31010 46869 42239 73 3 0x1100090 kqread syslogd
42239 316581 1 0 3 0x100082 sbwait syslogd
35176 330463 1 0 3 0x100080 kqread resolvd
92768 393051 17828 77 7 0x100013 dhcpleased
49669 490465 17828 77 3 0x100092 kqread dhcpleased
17828 411408 1 0 3 0x80 kqread dhcpleased
28484 21179 0 0 3 0x14200 bored smr
81102 232324 0 0 3 0x14200 pgzero zerothread
34057 336795 0 0 3 0x14200 aiodoned aiodoned
95761 264907 0 0 3 0x14200 syncer update
8346 71182 0 0 3 0x14200 cleaner cleaner
3851 474160 0 0 3 0x14200 reaper reaper
45382 203848 0 0 3 0x14200 pgdaemon pagedaemon
46617 409892 0 0 3 0x14200 bored viomb
88589 273173 0 0 3 0x40014200 acpi0 acpi0
80302 224658 0 0 3 0x40014200 idle1
61264 510361 0 0 3 0x14200 bored softnet3
23089 276856 0 0 3 0x14200 bored softnet2
13614 128574 0 0 3 0x14200 bored softnet1
36404 243240 0 0 3 0x14200 bored softnet0
5805 233248 0 0 3 0x14200 bored systqmp
33974 198791 0 0 3 0x14200 bored systq
26428 77231 0 0 3 0x14200 tmoslp softclockmp
474 425172 0 0 3 0x40014200 tmoslp softclock
40675 29481 0 0 3 0x40014200 idle0
1 315031 0 0 3 0x80082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 78809 (ifconfig) thread 0xffff80002a498558 (415566)
Process 99200 (syz-executor) thread 0xffff8000318aef88 (82607)
Process 99200 (syz-executor) thread 0xffff8000318aecf8 (127792)
Process 98654 (syz-executor) thread 0xffff8000ffffd1f8 (330881)
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10206 11042K 12660K 166960K 13213 0
pcb 17 14K 16K 166960K 260 0
rtable 175 7K 9K 166960K 544 0
pf 40 18K 21K 166960K 128 0
ifaddr 38 6K 7K 166960K 91 0
ifgroup 57 2K 2K 166960K 145 0
sysctl 3 1K 1K 166960K 3 0
counters 66 36K 37K 166960K 120 0
ioctlops 0 0K 4K 166960K 1645 0
iov 0 0K 16K 166960K 74 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1453 91K 91K 166960K 2292 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 5K 13K 166960K 22 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 47 0
dirhash 12 2K 2K 166960K 33 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 232K 166960K 1201 0
sigio 0 0K 0K 166960K 25 0
proc 79 103K 128K 166960K 708 0
subproc 72 4K 4K 166960K 108 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 154 0
in_multi 73 5K 7K 166960K 173 0
ether_multi 1 0K 0K 166960K 5 0
mrt 0 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 103 466K 466K 166960K 103 0
exec 0 0K 1K 166960K 540 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 228 73K 81K 166960K 12602 0
UVM aobj 70 5K 5K 166960K 75 0
pinsyscall 43 86K 104K 166960K 2367 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 51 0
NDP 13 0K 1K 166960K 59 0
temp 80 8644K 8717K 166960K 48490 0
kqueue 14 20K 28K 166960K 211 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 244 0 241 5 4 1 3 0 8 0
rtentry 112 163 0 89 4 0 4 4 0 8 0
unpcb 144 1005 0 981 10 8 2 6 0 8 0
syncache 336 7 0 7 5 4 1 1 0 8 1
tcpqe 32 1 0 1 1 1 0 1 0 8 0
tcpcb 808 388 0 383 15 14 1 8 0 8 0
arp 120 25 0 12 1 0 1 1 0 8 0
inpcb 376 1397 0 1385 21 19 2 8 0 8 0
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 136 36 0 20 1 0 1 1 0 8 0
pkpcb 40 5 0 5 2 2 0 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1168 10 0 9 1 0 1 1 0 8 0
pppxif 1472 5 0 5 3 3 0 1 0 8 0
pfstscr 40 1 0 1 1 1 0 1 0 8 0
pffrag 232 6 0 2 2 1 1 1 0 482 0
pffrnode 88 6 0 2 2 1 1 1 0 8 0
pffrent 40 8 0 4 2 1 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfanchor 1288 4 0 0 1 0 1 1 0 8 0
pftag 88 4 0 0 1 0 1 1 0 8 0
pfqueue 320 2 0 1 1 0 1 1 0 8 0
pfstitem 24 80 0 13 1 0 1 1 0 8 0
pfstkey 128 84 0 17 3 0 3 3 0 8 0
pfstate 376 81 0 15 7 0 7 7 0 8 0
pfrule 1344 35 0 27 2 1 1 2 0 8 0
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 719 0 332 31 5 26 29 0 8 0
art_table 32 722 0 332 4 0 4 4 0 8 0
art_node 16 158 0 92 1 0 1 1 0 8 0
sysvmsgpl 40 45 0 42 1 0 1 1 0 8 0
semapl 112 44 0 34 1 0 1 1 0 8 0
shmpl 112 72 0 5 2 0 2 2 0 8 0
dirhash 1024 31 0 14 3 0 3 3 0 8 0
dino2pl 256 3375 0 1863 95 0 95 95 0 8 0
ffsino 280 3375 0 1863 109 0 109 109 0 8 0
nchpl 144 4998 0 3292 64 0 64 64 0 8 0
uvmvnodes 80 4103 0 0 84 0 84 84 0 8 0
vnodes 216 4103 0 0 228 0 228 228 0 8 0
namei 1024 17190 0 17188 2 1 1 1 0 8 0
percpumem 16 74 0 27 1 0 1 1 0 8 0
kstatmem 264 68 0 42 2 0 2 2 0 8 0
scsiplug 72 6 0 6 4 3 1 1 0 8 1
scxspl 216 15425 0 15425 13 12 1 8 1 8 1
plimitpl 152 298 0 281 1 0 1 1 0 8 0
sigapl 424 1505 0 1433 10 1 9 9 0 8 0
futexpl 64 16294 0 16291 3 2 1 1 0 8 0
knotepl 120 773 0 0 24 0 24 24 0 8 0
kqueuepl 216 474 0 461 5 4 1 5 0 8 0
pipepl 328 232 0 205 5 2 3 5 0 8 0
fdescpl 504 1464 0 1432 5 0 5 5 0 8 0
filepl 152 9728 0 9491 19 8 11 15 0 8 0
lockfpl 104 383 0 381 1 0 1 1 0 8 0
lockfspl 48 141 0 139 1 0 1 1 0 8 0
sessionpl 144 30 0 21 1 0 1 1 0 8 0
pgrppl 48 55 0 37 1 0 1 1 0 8 0
ucredpl 104 1227 0 1211 1 0 1 1 0 8 0
zombiepl 144 1436 0 1433 1 0 1 1 0 8 0
processpl 1168 1505 0 1433 7 1 6 6 0 8 0
procpl 656 3219 0 3139 8 0 8 8 0 8 0
srpgc 96 8 0 8 2 2 0 1 0 8 0
sosppl 168 15 0 15 3 2 1 1 0 8 1
sockpl 688 2730 0 2691 35 30 5 15 0 8 1
mcl64k 65536 4 0 0 1 0 1 1 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 122 0 0 16 0 16 16 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 29 0 0 4 0 4 4 0 8 0
mtagpl 96 22 0 0 1 0 1 1 0 8 0
mbufpl 256 623 0 0 39 0 39 39 0 8 0
bufpl 280 4461 0 131 310 0 310 310 0 8 0
anonpl 24 205639 0 202165 90 48 42 70 0 184 0
amapchunkpl 152 39892 0 39393 33 11 22 27 0 158 0
amappl16 200 4219 0 4188 43 37 6 24 0 8 0
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 123 0 111 1 0 1 1 0 8 0
amappl13 176 7 0 7 2 2 0 1 0 8 0
amappl12 168 2160 0 2128 4 2 2 3 0 8 0
amappl11 160 52 0 38 1 0 1 1 0 8 0
amappl10 152 8 0 8 2 2 0 1 0 8 0
amappl9 144 258 0 258 2 2 0 1 0 8 0
amappl8 136 24 0 21 1 0 1 1 0 8 0
amappl7 128 118 0 106 1 0 1 1 0 8 0
amappl6 120 229 0 223 1 0 1 1 0 8 0
amappl5 112 136 0 125 1 0 1 1 0 8 0
amappl4 104 338 0 317 1 0 1 1 0 8 0
amappl3 96 8163 0 8048 5 1 4 4 0 8 0
amappl2 88 717 0 653 2 0 2 2 0 8 0
amappl1 80 11833 0 11249 16 2 14 14 0 8 0
amappl 88 12106 0 11934 5 0 5 5 0 92 0
dma32768 32768 2 0 2 1 1 0 1 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 254 0 254 2 2 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 19 0 18 1 0 1 1 0 8 0
aobjpl 72 74 0 5 2 0 2 2 0 8 0
uaddrrnd 24 1464 0 1432 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1464 0 1432 1 0 1 1 0 8 0
vmmpekpl 168 12787 0 12733 3 0 3 3 0 8 0
vmmpepl 168 93823 0 91949 114 23 91 102 0 357 3
vmsppl 456 1463 0 1432 5 0 5 5 0 8 0
rwobjpl 64 30655 0 25518 86 3 83 83 0 8 0
pdppl 4096 2936 0 2864 116 42 74 86 0 8 2
pvpl 32 19557 0 0 160 2 158 158 0 265 0
pmappl 248 1463 0 1432 3 0 3 3 0 8 0
extentpl 40 55 0 38 1 0 1 1 0 8 0
phpool 112 349 0 70 9 0 9 9 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83799ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff838f29a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838f29a8) at __mp_lock+0x199 sys/kern/kern_lock.c:144
softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff838f29a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838f29a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144
ktrstruct(ffff8000ffffb720,ffffffff83449b9a,ffff80002a363e40,20) at ktrstruct+0xe2 sys/kern/kern_ktrace.c:313
sys_kevent(ffff8000ffffb720,ffff80002a3640d0,ffff80002a364020) at sys_kevent+0x80f sys/kern/kern_event.c:1184
syscall(ffff80002a3640d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3640d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7423873bf5d0, count: 4
ddb{0}> trace
x86_ipi_db(ffffffff83799ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff838f29a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838f29a8) at __mp_lock+0x199 sys/kern/kern_lock.c:144
softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff838f29a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838f29a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144
ktrstruct(ffff8000ffffb720,ffffffff83449b9a,ffff80002a363e40,20) at ktrstruct+0xe2 sys/kern/kern_ktrace.c:313
sys_kevent(ffff8000ffffb720,ffff80002a3640d0,ffff80002a364020) at sys_kevent+0x80f sys/kern/kern_event.c:1184
syscall(ffff80002a3640d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3640d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7423873bf5d0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83437184) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833e7c54,ffffffff833be4e8,142,ffffffff833c7d23) at __assert+0x29
tun_clone_destroy(ffff80000147f000) at tun_clone_destroy+0x38a sys/net/if_tun.c:322
if_clone_destroy(ffff80003c4f3eb0) at if_clone_destroy+0x1d7 sys/net/if.c:1383
ifioctl(ffff80000153ab98,80206979,ffff80003c4f3eb0,ffff80002a498558) at ifioctl+0x5c5
sys_ioctl(ffff80002a498558,ffff80003c4f4090,ffff80003c4f3fe0) at sys_ioctl+0x5c3
syscall(ffff80003c4f4090) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4f4090) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a1fe5b24680, count: 6
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83437184) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833e7c54,ffffffff833be4e8,142,ffffffff833c7d23) at __assert+0x29
tun_clone_destroy(ffff80000147f000) at tun_clone_destroy+0x38a sys/net/if_tun.c:322
if_clone_destroy(ffff80003c4f3eb0) at if_clone_destroy+0x1d7 sys/net/if.c:1383
ifioctl(ffff80000153ab98,80206979,ffff80003c4f3eb0,ffff80002a498558) at ifioctl+0x5c5
sys_ioctl(ffff80002a498558,ffff80003c4f4090,ffff80003c4f3fe0) at sys_ioctl+0x5c3
syscall(ffff80003c4f4090) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4f4090) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a1fe5b24680, count: -9