panic: bad arg kind: <nil>
goroutine 23 [running]:
uvm_fault(0xfffffd806bc0acc0, 0xb, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel page fault
uvm_fault(0xfffffd806bc0acc0, 0xb, 0, 1) -> e
in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914
end trace frame: 0xffff80001d417f90, count: 0
ddb> trace
in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000a39c00) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000a01000) at in_ifdetach+0x74 sys/netinet/in.c:969
if_detach(ffff800000a01000) at if_detach+0x140 sys/net/if.c:1151
tun_clone_destroy(ffff800000a01000) at tun_clone_destroy+0x172 sys/net/if_tun.c:312
spec_close(ffff80001d418110) at spec_close+0x311 sys/kern/spec_vnops.c:555
VOP_CLOSE(fffffd805d65b9c0,7,fffffd806c3be840,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175
vn_closefile(fffffd8054d5ed30,ffff8000ffff8280) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd8054d5ed30,ffff8000ffff8280) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:610
fdrop(fffffd8054d5ed30,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1273
closef(fffffd8054d5ed30,ffff8000ffff8280) at closef+0x118 sys/kern/kern_descrip.c:1257
fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1189
exit1(ffff8000ffff8280,0,d,1) at exit1+0x334 sys/kern/kern_exit.c:196
postsig(ffff8000ffff8280,d) at postsig+0x4a8 sigexit sys/kern/kern_sig.c:1498 [inline]
postsig(ffff8000ffff8280,d) at postsig+0x4a8 sys/kern/kern_sig.c:1430
userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1888
syscall(ffff80001d418590) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:115 [inline]
syscall(ffff80001d418590) at syscall+0x42e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9fd0, count: -16
ddb> show registers
rdi 0x2
rsi 0
rbp 0xffff80001d417f40
rbx 0
rdx 0x3
rcx 0x1
rax 0
r8 0xffff800000a39c00
r9 0x5
r10 0x12e9337d6b8973b5
r11 0xc00d3d5cc16117e5
r12 0
r13 0x3
r14 0xffffffffffffffff
r15 0x1
rip 0xffffffff81bc8fad in_delmulti+0x8d
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80001d417ee0
ss 0x10
in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb> show proc
PROC (syz-executor.0) pid=379971 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
pri=72, usrpri=72, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff4288,0xffff8000ffff8c70
process=0xffff80001d39b120 user=0xffff80001d413000, vmspace=0xfffffd806bc0acc0
estcpu=36, cpticks=2, pctcpu=0.0
user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
43558 368745 0 0 3 0x14200 acct acct
13611 218681 0 0 3 0x14200 bored sosplice
98302 196383 1 0 2 0x82 syz-executor.1
19952 403825 69080 0 2 0x10008a ksh
69080 232092 88391 0 2 0x12 sshd
42461 479264 1 0 2 0x100083 getty
88391 311636 1 0 2 0x80 sshd
77325 343171 10304 73 3 0x100090 kqread syslogd
10304 389336 1 0 3 0x100082 netio syslogd
79222 491192 1 77 2 0x100090 dhclient
68960 198037 1 0 2 0x80 dhclient
49644 387284 0 0 2 0x14200 zerothread
52109 332093 0 0 3 0x14200 aiodoned aiodoned
2393 392682 0 0 3 0x14200 syncer update
79575 97197 0 0 3 0x14200 cleaner cleaner
80216 246221 0 0 3 0x14200 reaper reaper
68399 202102 0 0 3 0x14200 pgdaemon pagedaemon
13130 469353 0 0 3 0x14200 bored crynlk
56432 205882 0 0 3 0x14200 bored crypto
99243 362175 0 0 3 0x40014200 acpi0 acpi0
39745 27629 0 0 2 0x14200 softnet
24406 92378 0 0 2 0x14200 systqmp
218 238219 0 0 3 0x14200 bored systq
84685 213901 0 0 3 0x40014200 bored softclock
43255 363510 0 0 3 0x40014200 idle0
92969 146436 0 0 3 0x14200 bored smr
1 446462 0 0 2 0x82 init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9516 6349K 6991K 78643K 12008 0
pcb 13 8K 8K 78643K 164 0
rtable 94 3K 4K 78643K 328 0
ifaddr 78 14K 15K 78643K 137 0
counters 19 16K 16K 78643K 19 0
ioctlops 0 0K 2K 78643K 28 0
iov 0 0K 16K 78643K 91 0
mount 1 1K 1K 78643K 1 0
vnodes 1220 77K 77K 78643K 1683 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 5 0
VM map 2 0K 0K 78643K 2 0
sem 12 1K 1K 78643K 48 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1794 195K 288K 78643K 12646 0
file desc 3 8K 25K 78643K 386 0
sigio 0 0K 0K 78643K 4 0
proc 49 38K 63K 78643K 395 0
subproc 23 1K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 194 0
in_multi 50 2K 2K 78643K 87 0
ether_multi 1 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 223 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 73 19K 43K 78643K 1821 0
UVM aobj 24 6K 6K 78643K 25 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 135 0
NDP 14 0K 0K 78643K 28 0
temp 145 3017K 3083K 78643K 19167 0
kqueue 0 0K 0K 78643K 6 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 8 0 4 1 0 1 1 0 8 0
rtpcb 80 99 0 97 1 0 1 1 0 8 0
rtentry 112 62 0 25 2 0 2 2 0 8 0
unpcb 120 229 0 221 1 0 1 1 0 8 0
syncache 264 10 0 10 4 3 1 1 0 8 1
tcpqe 32 114 0 114 3 2 1 1 0 8 1
tcpcb 544 280 0 276 2 1 1 2 0 8 0
ipq 40 6 0 6 2 1 1 1 0 8 1
ipqe 40 98 0 98 2 1 1 1 0 8 1
inpcb 280 904 0 897 4 1 3 3 0 8 2
nd6 48 8 0 6 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 0 1 1 0 8 1
ppxss 1128 6 0 6 2 1 1 1 0 8 1
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 290 0 99 15 0 15 15 0 8 0
art_table 32 292 0 99 2 0 2 2 0 8 0
art_node 16 61 0 22 1 0 1 1 0 8 0
sysvmsgpl 40 22 0 14 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 46 0 36 1 0 1 1 0 8 0
shmpl 112 23 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2043 0 647 46 0 46 46 0 8 0
ffsino 240 2043 0 647 83 0 83 83 0 8 0
nchpl 144 2846 0 1233 60 0 60 60 0 8 0
uvmvnodes 72 2398 0 0 44 0 44 44 0 8 0
vnodes 208 2398 0 0 127 0 127 127 0 8 0
namei 1024 9242 0 9242 1 0 1 1 0 8 1
vmpool 528 4 0 4 2 1 1 1 0 8 1
scxspl 192 8645 0 8645 1 0 1 1 0 8 1
plimitpl 152 42 0 35 1 0 1 1 0 8 0
sigapl 432 557 0 546 2 0 2 2 0 8 0
futexpl 56 13854 0 13854 1 0 1 1 0 8 1
knotepl 112 123 0 118 2 0 2 2 0 8 1
kqueuepl 104 156 0 155 1 0 1 1 0 8 0
pipepl 128 342 0 330 2 1 1 2 0 8 0
fdescpl 424 558 0 546 2 0 2 2 0 8 0
filepl 120 5618 0 5545 7 1 6 6 0 8 3
lockfpl 104 196 0 195 1 0 1 1 0 8 0
lockfspl 48 59 0 58 1 0 1 1 0 8 0
sessionpl 112 17 0 7 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 1447 0 1440 1 0 1 1 0 8 0
zombiepl 144 547 0 545 1 0 1 1 0 8 0
processpl 872 574 0 545 4 0 4 4 0 8 0
procpl 632 1075 0 1046 4 0 4 4 0 8 0
sosppl 128 2 0 2 1 0 1 1 0 8 1
sockpl 384 1236 0 1219 6 0 6 6 0 8 4
mcl64k 65536 261 0 261 29 21 8 29 0 8 8
mcl16k 16384 14 0 14 1 0 1 1 0 8 1
mcl12k 12288 11 0 11 1 0 1 1 0 8 1
mcl9k 9216 6 0 6 2 1 1 1 0 8 1
mcl8k 8192 15 0 15 1 0 1 1 0 8 1
mcl4k 4096 59 0 59 2 1 1 1 0 8 1
mcl2k2 2112 8 0 8 1 0 1 1 0 8 1
mcl2k 2048 67689 0 67642 17 7 10 12 0 8 3
mtagpl 80 16 0 10 2 1 1 1 0 8 0
mbufpl 256 112024 0 111902 32 13 19 25 0 8 6
bufpl 280 7557 0 1373 442 0 442 442 0 8 0
anonpl 16 96665 0 95435 104 8 96 96 0 107 82
amapchunkpl 152 3126 0 3089 20 3 17 17 0 158 14
amappl16 192 4087 0 4070 74 19 55 65 0 8 48
amappl15 184 50 0 46 1 0 1 1 0 8 0
amappl14 176 208 0 206 1 0 1 1 0 8 0
amappl13 168 176 0 175 1 0 1 1 0 8 0
amappl12 160 5 0 5 1 1 0 1 0 8 0
amappl11 152 46 0 35 1 0 1 1 0 8 0
amappl10 144 15 0 15 1 0 1 1 0 8 1
amappl9 136 565 0 561 1 0 1 1 0 8 0
amappl8 128 137 0 132 2 0 2 2 0 8 1
amappl7 120 91 0 83 1 0 1 1 0 8 0
amappl6 112 53 0 51 1 0 1 1 0 8 0
amappl5 104 145 0 134 1 0 1 1 0 8 0
amappl4 96 791 0 765 1 0 1 1 0 8 0
amappl3 88 138 0 131 1 0 1 1 0 8 0
amappl2 80 3868 0 3807 3 1 2 3 0 8 0
amappl1 72 19836 0 19426 26 16 10 20 0 8 0
amappl 80 1314 0 1292 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 24 0 1 1 0 1 1 0 8 0
uaddrrnd 24 562 0 550 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 562 0 550 1 0 1 1 0 8 0
vmmpekpl 168 7651 0 7624 2 0 2 2 0 8 0
vmmpepl 168 75193 0 74272 134 26 108 128 0 357 59
vmsppl 272 561 0 550 3 1 2 2 0 8 1
pdppl 4096 1130 0 1100 6 1 5 6 0 8 0
pvpl 32 240170 0 237206 228 7 221 221 0 265 175
pmappl 200 561 0 550 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 199 0 47 5 0 5 5 0 8 0