panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 319
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
307860 22586 0 0 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834c006c) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834fbc95,ffffffff83541d66,13f,ffffffff8343742a) at __assert+0x29 sys/kern/subr_prf.c:-1
tun_clone_destroy(ffff800001618800) at tun_clone_destroy+0x38a
if_clone_destroy(ffff80003c3eae20) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(2802,f) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80003c3eaee0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef0069711448,f,ffffef00097fd750,ffff80003a3a5778) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef006ceed9a0,ffff80003a3a5778) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef006ceed9a0,ffff80003a3a5778) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80003a3a5778) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80003a3a5778,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80003a3a5778,ffff80003c3eb250,ffff80003c3eb1a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
end trace frame: 0xffff80003c3eb240, count: 0
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 319
ddb{1}> show kasan
No such command
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834c006c) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834fbc95,ffffffff83541d66,13f,ffffffff8343742a) at __assert+0x29 sys/kern/subr_prf.c:-1
tun_clone_destroy(ffff800001618800) at tun_clone_destroy+0x38a
if_clone_destroy(ffff80003c3eae20) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(2802,f) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80003c3eaee0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef0069711448,f,ffffef00097fd750,ffff80003a3a5778) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef006ceed9a0,ffff80003a3a5778) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef006ceed9a0,ffff80003a3a5778) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80003a3a5778) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80003a3a5778,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80003a3a5778,ffff80003c3eb250,ffff80003c3eb1a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c3eb250) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3eb250) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7797f38df2a0, count: -16
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003c3eaca0
rbx 0xffff80002999ee07
rdx 0
rcx 0xffff80003a3a5778
rax 0xffff80002999dff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x99997015008cc6d7
r11 0x50030120a7349278
r12 0xffff80002999ec08
r13 0
r14 0
r15 0x1
rip 0xffffffff81959d45 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003c3eac90
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=414089 pid=45896 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=8, usrpri=86, slppri=8, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80003a3a5778 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff800045fee018,0xffff800045feefb8
process=0xffff80002a37eb68 user=0xffff80003c3e6000, vmspace=0xffffef006cf28018
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22586 307860 27143 0 7 0 syz-executor
22586 46902 27143 0 2 0x4000080 syz-executor
35489 453945 35743 0 2 0 syz-executor
92693 5574 3610 0 2 0 syz-executor
92693 168045 3610 0 3 0x4000080 fsleep syz-executor
92693 73618 3610 0 3 0x4000080 fsleep syz-executor
37851 76806 51019 0 3 0x90 nanoslp syz-executor
37851 1517 51019 0 3 0x4000090 ttyin syz-executor
89712 111988 8507 0 3 0x82 nanoslp syz-executor
27143 182279 8507 0 3 0x82 nanoslp syz-executor
51019 135434 8507 0 3 0x82 nanoslp syz-executor
35743 277385 8507 0 3 0x82 nanoslp syz-executor
3610 376748 8507 0 3 0x82 nanoslp syz-executor
44329 416952 8507 0 2 0x2 syz-executor
25077 503022 8507 0 2 0x2 syz-executor
96675 400043 8507 0 2 0x10000082 syz-executor
8507 299889 20490 0 2 0x2 syz-executor
20490 105943 54865 0 3 0x10008a sigsusp ksh
54865 95853 14548 0 3 0x98 kqread sshd-session
14548 102273 40348 0 3 0x92 kqread sshd-session
19770 246916 1 0 3 0x100083 ttyin getty
40348 377759 1 0 3 0x88 kqread sshd
14229 326589 22391 74 3 0x1100092 bpf pflogd
22391 436600 1 0 3 0x80 sbwait pflogd
92513 377217 49328 73 3 0x1100090 kqread syslogd
49328 2483 1 0 3 0x100082 sbwait syslogd
55172 64204 1 0 3 0x100080 kqread resolvd
21702 355312 86420 77 3 0x100092 kqread dhcpleased
22972 55315 86420 77 3 0x100092 kqread dhcpleased
86420 475114 1 0 3 0x80 kqread dhcpleased
61110 381360 0 0 3 0x14200 bored smr
58129 516204 0 0 2 0x14200 zerothread
88607 185320 0 0 3 0x14200 aiodoned aiodoned
56554 520780 0 0 3 0x14200 syncer update
79082 375597 0 0 3 0x14200 cleaner cleaner
6927 106135 0 0 3 0x14200 reaper reaper
17839 231276 0 0 3 0x14200 pgdaemon pagedaemon
98518 415371 0 0 3 0x14200 bored viomb
84890 463934 0 0 3 0x40014200 acpi0 acpi0
16295 227385 0 0 3 0x40014200 idle1
34051 266905 0 0 3 0x14200 bored softnet1
10588 307620 0 0 3 0x14200 bored softnet0
66916 274532 0 0 3 0x14200 bored systqmp
78820 431452 0 0 3 0x14200 bored systq
70042 206615 0 0 3 0x14200 tmoslp softclockmp
31476 324411 0 0 3 0x40014200 tmoslp softclock
32351 116394 0 0 3 0x40014200 idle0
1 163208 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 44329 (syz-executor) thread 0xffff80002a2227d8 (416952)
exclusive rrwlock inode r = 0 (0xffffef006ced1440)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xffffef006dc07d70)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11058 12094K 12227K 166960K 12175 0
pcb 18 12K 12K 166960K 36 0
rtable 215 6K 7K 166960K 352 0
pf 35 17K 18K 166960K 50 0
ifaddr 40 6K 7K 166960K 47 0
ifgroup 56 2K 2K 166960K 64 0
sysctl 1 1K 9K 166960K 5 0
counters 70 37K 37K 166960K 74 0
ioctlops 0 0K 4K 166960K 1485 0
iov 0 0K 12K 166960K 2 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1291 81K 81K 166960K 1391 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 1K 166960K 2 0
VM map 2 1K 1K 166960K 2 0
sem 4 0K 0K 166960K 5 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 15 53K 85K 166960K 174 0
sigio 0 0K 0K 166960K 1 0
proc 71 115K 163K 166960K 555 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 9 0
in_multi 88 6K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 55 254K 254K 166960K 55 0
exec 0 0K 1K 166960K 386 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 209 150K 165K 166960K 3435 0
UVM aobj 4 2K 2K 166960K 4 0
pinsyscall 40 80K 102K 166960K 1330 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 4 0
NDP 25 1K 2K 166960K 30 0
temp 34 9114K 9120K 166960K 6447 0
kqueue 13 20K 24K 166960K 36 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 28 0 0 1 0 1 1 0 8 0
rtpcb 120 36 0 33 1 0 1 1 0 8 0
rtentry 176 111 0 12 5 0 5 5 0 8 0
unpcb 144 58 0 39 1 0 1 1 0 8 0
syncache 336 4 0 4 1 0 1 1 0 8 1
tcpcb 736 19 0 15 1 0 1 1 0 8 0
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 103 0 95 2 0 2 2 0 8 1
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 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
pfstitem 24 20 0 0 1 0 1 1 0 8 0
pfstkey 128 20 0 0 1 0 1 1 0 8 0
pfstate 448 20 0 0 3 0 3 3 0 8 0
pfrule 1360 22 0 17 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 453 0 44 29 0 29 29 0 8 2
art_table 40 454 0 44 5 0 5 5 0 8 0
art_node 32 111 0 21 1 0 1 1 0 8 0
semapl 72 2 0 0 1 0 1 1 0 8 0
shmpl 112 1 0 0 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1642 0 175 93 0 93 93 0 8 0
ffsino 296 1642 0 175 114 0 114 114 0 8 0
nchpl 144 1883 0 175 64 0 64 64 0 8 0
vnodes 216 1742 0 0 97 0 97 97 0 8 0
namei 1024 5764 0 5763 2 0 2 2 0 8 1
percpumem 16 53 0 2 1 0 1 1 0 8 0
kstatmem 264 31 0 4 2 0 2 2 0 8 0
scxspl 216 6471 0 6471 4 1 3 3 1 8 3
plimitpl 152 31 0 13 1 0 1 1 0 8 0
sigapl 424 491 0 445 6 0 6 6 0 8 0
knotepl 120 301 0 0 10 0 10 10 0 8 0
kqueuepl 224 31 0 22 1 0 1 1 0 8 0
pipepl 344 128 0 100 3 0 3 3 0 8 0
fdescpl 528 475 0 446 3 0 3 3 0 8 0
filepl 160 1763 0 1541 10 0 10 10 0 8 0
lockfpl 104 16 0 14 1 0 1 1 0 8 0
lockfspl 48 9 0 7 1 0 1 1 0 8 0
sessionpl 144 24 0 15 1 0 1 1 0 8 0
pgrppl 48 33 0 16 1 0 1 1 0 8 0
ucredpl 104 128 0 114 1 0 1 1 0 8 0
zombiepl 144 447 0 445 1 0 1 1 0 8 0
processpl 1232 491 0 445 5 0 5 5 0 8 1
procpl 664 550 0 500 5 0 5 5 0 8 0
sockpl 752 199 0 169 4 0 4 4 0 8 0
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 114 0 0 15 0 15 15 0 8 0
mcl2k 2048 19 0 0 3 0 3 3 0 8 0
mextrefs 64 19 0 0 1 0 1 1 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 142 0 0 9 0 9 9 0 8 0
bufpl 272 2357 0 105 151 0 151 151 0 8 0
anonpl 32 3796 0 0 31 0 31 31 0 247 0
amapchunkpl 152 9621 0 9224 28 1 27 27 0 158 9
amappl16 200 1776 0 1759 5 0 5 5 0 8 3
amappl15 192 7 0 7 1 0 1 1 0 8 1
amappl14 184 431 0 430 1 0 1 1 0 8 0
amappl13 176 137 0 125 1 0 1 1 0 8 0
amappl12 168 725 0 697 2 0 2 2 0 8 0
amappl11 160 6 0 6 1 0 1 1 0 8 1
amappl10 152 65 0 51 1 0 1 1 0 8 0
amappl9 144 293 0 293 1 0 1 1 0 8 1
amappl8 136 100 0 96 1 0 1 1 0 8 0
amappl7 128 148 0 135 1 0 1 1 0 8 0
amappl6 120 154 0 153 1 0 1 1 0 8 0
amappl5 112 104 0 93 1 0 1 1 0 8 0
amappl4 104 304 0 282 1 0 1 1 0 8 0
amappl3 96 1680 0 1588 3 0 3 3 0 8 0
amappl2 88 549 0 489 2 0 2 2 0 8 0
amappl1 80 10550 0 9947 15 0 15 15 0 8 1
amappl 88 2695 0 2558 4 0 4 4 0 92 0
uvmvnodes 80 101 0 0 3 0 3 3 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 128 253 0 253 1 1 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 18 0 17 1 0 1 1 0 8 0
aobjpl 72 3 0 0 1 0 1 1 0 8 0
uaddrrnd 24 475 0 446 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 475 0 446 1 0 1 1 0 8 0
vmmpekpl 168 5908 0 5871 2 0 2 2 0 8 0
vmmpepl 168 39798 0 38014 88 0 88 88 0 357 2
vmsppl 488 474 0 446 5 0 5 5 0 8 0
rwobjpl 80 14764 0 13769 24 0 24 24 0 8 0
pdppl 4096 957 0 892 93 12 81 81 0 8 16
pvpl 32 10020 0 0 81 0 81 81 0 265 0
pmappl 256 474 0 446 3 0 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 414 0 15 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff839d4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153
__mp_lock(ffffffff83b29b00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83b29b00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x75d9749d3d90, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff839d4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153
__mp_lock(ffffffff83b29b00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83b29b00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x75d9749d3d90, count: -8
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(ffffffff834c006c) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834fbc95,ffffffff83541d66,13f,ffffffff8343742a) at __assert+0x29 sys/kern/subr_prf.c:-1
tun_clone_destroy(ffff800001618800) at tun_clone_destroy+0x38a
if_clone_destroy(ffff80003c3eae20) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(2802,f) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80003c3eaee0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef0069711448,f,ffffef00097fd750,ffff80003a3a5778) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef006ceed9a0,ffff80003a3a5778) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef006ceed9a0,ffff80003a3a5778) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80003a3a5778) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80003a3a5778,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80003a3a5778,ffff80003c3eb250,ffff80003c3eb1a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
end trace frame: 0xffff80003c3eb240, count: 0
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834c006c) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834fbc95,ffffffff83541d66,13f,ffffffff8343742a) at __assert+0x29 sys/kern/subr_prf.c:-1
tun_clone_destroy(ffff800001618800) at tun_clone_destroy+0x38a
if_clone_destroy(ffff80003c3eae20) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(2802,f) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80003c3eaee0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef0069711448,f,ffffef00097fd750,ffff80003a3a5778) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef006ceed9a0,ffff80003a3a5778) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef006ceed9a0,ffff80003a3a5778) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef006ceed9a0,ffff80003a3a5778) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80003a3a5778) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80003a3a5778,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80003a3a5778,ffff80003c3eb250,ffff80003c3eb1a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c3eb250) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3eb250) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7797f38df2a0, count: -16