login: uvm_fault(0xfffffd807f0005c0, 0x40b, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f0005c0, 0x40b, 0, 1) -> e
in_delmulti(3ff) at in_delmulti+0x8d sys/netinet/in.c:914
end trace frame: 0xffff800020ed1c90, count: 0
ddb{0}> trace
in_delmulti(3ff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000aa2900) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971
if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142
tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329
ifioctl(fffffd806f68bc80,80206979,ffff800020ed1ed0,ffff800020ddd868) at ifioctl+0x3ea sys/net/if.c:1929
soo_ioctl(fffffd806cf62b58,80206979,ffff800020ed1ed0,ffff800020ddd868) at soo_ioctl+0x27c sys/kern/sys_socket.c:138
sys_ioctl(ffff800020ddd868,ffff800020ed1fe8,ffff800020ed2030) at sys_ioctl+0x4a5
syscall(ffff800020ed20b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020ed20b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff3430, count: -10
ddb{0}> show registers
rdi 0x2
rsi 0
rbp 0xffff800020ed1c40
rbx 0
rdx 0x8b
rcx 0x1
rax 0x1
r8 0xffffffff8206f593 rt_ifa_purge+0x153
r9 0x5
r10 0x3
r11 0x840b044411722835
r12 0
r13 0x3
r14 0x3ff
r15 0x1
rip 0xffffffff8212e1ad in_delmulti+0x8d
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800020ed1be0
ss 0x10
in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb{0}> show proc
PROC (syz-executor.0) pid=55376 stat=onproc
flags process=0 proc=0
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020dddad8,0xffffffff82915098
process=0xffff800020df0f90 user=0xffff800020ecd000, vmspace=0xfffffd807f0005c0
estcpu=9, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*85428 55376 24723 0 7 0 syz-executor.0
24723 322552 29546 0 3 0x82 nanosleep syz-executor.0
29546 188016 58210 0 3 0x82 thrsleep syz-execprog
29546 166788 58210 0 3 0x4000082 thrsleep syz-execprog
29546 434460 58210 0 3 0x4000082 thrsleep syz-execprog
29546 410201 58210 0 3 0x4000082 thrsleep syz-execprog
29546 209082 58210 0 3 0x4000082 thrsleep syz-execprog
29546 268924 58210 0 3 0x4000082 thrsleep syz-execprog
29546 214555 58210 0 3 0x4000082 kqread syz-execprog
29546 419714 58210 0 3 0x4000082 thrsleep syz-execprog
29546 395045 58210 0 3 0x4000082 thrsleep syz-execprog
58210 107528 82276 0 3 0x10008a pause ksh
82276 40297 37931 0 3 0x92 select sshd
55465 450665 1 0 3 0x100083 ttyin getty
37931 90973 1 0 3 0x80 select sshd
27506 387002 55769 74 3 0x100092 bpf pflogd
55769 3387 1 0 3 0x80 netio pflogd
78280 88964 74315 73 3 0x100090 kqread syslogd
74315 520233 1 0 3 0x100082 netio syslogd
98277 404001 1 77 7 0x100090 dhclient
39619 152926 1 0 3 0x80 poll dhclient
50143 160070 0 0 3 0x14200 bored smr
48192 460662 0 0 3 0x14200 pgzero zerothread
26613 290592 0 0 3 0x14200 aiodoned aiodoned
96351 89718 0 0 3 0x14200 syncer update
57478 94204 0 0 3 0x14200 cleaner cleaner
72143 65744 0 0 3 0x14200 reaper reaper
98514 355355 0 0 3 0x14200 pgdaemon pagedaemon
86374 259226 0 0 3 0x14200 bored crynlk
15109 351296 0 0 3 0x14200 bored crypto
62106 274956 0 0 3 0x40014200 acpi0 acpi0
76206 357393 0 0 3 0x40014200 idle1
39917 95523 0 0 3 0x14200 bored softnet
48211 270622 0 0 2 0x14200 systqmp
36648 335859 0 0 3 0x14200 bored systq
68614 146153 0 0 3 0x40014200 bored softclock
7724 208072 0 0 3 0x40014200 idle0
1 191301 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 85428 (syz-executor.0) thread 0xffff800020ddd868 (55376)
exclusive rwlock netlock r = 0 (0xffffffff8271e198)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 if_detach+0x70 sys/net/if.c:1120
#2 tun_clone_destroy+0x1f2 sys/net/if_tun.c:329
#3 ifioctl+0x3ea sys/net/if.c:1929
#4 soo_ioctl+0x27c sys/kern/sys_socket.c:138
#5 sys_ioctl+0x4a5
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#7 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828c1610)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2 mi_switch+0x392 sys/kern/sched_bsd.c:435
#3 sleep_finish+0x113 sys/kern/kern_synch.c:418
#4 cond_wait+0x76 sys/kern/kern_synch.c:907
#5 smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271
#6 tun_clone_destroy+0x136 sys/net/if_tun.c:312
#7 ifioctl+0x3ea sys/net/if.c:1929
#8 soo_ioctl+0x27c sys/kern/sys_socket.c:138
#9 sys_ioctl+0x4a5
#10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#11 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9465 6396K 6396K 78643K 10560 0
pcb 13 8K 8K 78643K 13 0
rtable 75 2K 2K 78643K 165 0
ifaddr 37 9K 9K 78643K 39 0
counters 41 33K 33K 78643K 41 0
ioctlops 0 0K 4K 78643K 1468 0
mount 1 1K 1K 78643K 1 0
vnodes 1182 74K 75K 78643K 1188 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 3 8K 12K 78643K 18 0
proc 59 63K 83K 78643K 398 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 25 1K 1K 78643K 26 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
exec 0 0K 1K 78643K 197 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 72 11K 12K 78643K 948 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 7 0K 0K 78643K 7 0
temp 29 3853K 3917K 78643K 1871 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 4 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 17 0 15 1 0 1 1 0 8 0
rtentry 112 34 0 5 1 0 1 1 0 8 0
unpcb 120 29 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 1 0 1 1 0 8 1
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 296 35 0 27 1 0 1 1 0 8 0
nd6 48 3 0 0 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 10 0 0 1 0 1 1 0 8 0
pfstkey 112 10 0 0 1 0 1 1 0 8 0
pfstate 328 10 0 0 1 0 1 1 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 145 0 2 10 0 10 10 0 8 0
art_table 32 146 0 2 2 0 2 2 0 8 0
art_node 16 33 0 6 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1424 0 23 88 0 88 88 0 8 0
ffsino 272 1424 0 23 94 0 94 94 0 8 0
nchpl 144 1643 0 38 60 0 60 60 0 8 0
uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0
vnodes 208 1434 0 0 76 0 76 76 0 8 0
namei 1024 4230 0 4230 1 0 1 1 0 8 1
percpumem 16 31 0 0 1 0 1 1 0 8 0
scxspl 192 4436 0 4436 2 1 1 2 0 8 1
plimitpl 152 15 0 8 1 0 1 1 0 8 0
sigapl 424 241 0 211 4 0 4 4 0 8 0
knotepl 112 47 0 36 1 0 1 1 0 8 0
kqueuepl 144 2 0 0 1 0 1 1 0 8 0
pipepl 304 77 0 70 1 0 1 1 0 8 0
fdescpl 496 226 0 211 3 0 3 3 0 8 0
filepl 152 1117 0 1057 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 19 0 9 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 62 0 53 1 0 1 1 0 8 0
zombiepl 144 211 0 211 1 0 1 1 0 8 1
processpl 992 241 0 211 5 0 5 5 0 8 1
procpl 624 249 0 211 4 0 4 4 0 8 1
srpgc 64 2 0 2 1 0 1 1 0 8 1
sockpl 400 81 0 61 2 0 2 2 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 72 0 0 9 0 9 9 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 95 0 0 6 0 6 6 0 8 0
bufpl 280 3048 0 133 209 0 209 209 0 8 0
anonpl 16 22271 0 20599 13 1 12 12 0 124 3
amapchunkpl 152 813 0 744 5 0 5 5 0 158 1
amappl16 192 145 0 111 2 0 2 2 0 8 0
amappl15 184 1 0 1 1 1 0 1 0 8 0
amappl14 176 38 0 32 1 0 1 1 0 8 0
amappl13 168 25 0 22 1 0 1 1 0 8 0
amappl12 160 3 0 3 1 1 0 1 0 8 0
amappl11 152 53 0 38 1 0 1 1 0 8 0
amappl10 144 15 0 13 1 0 1 1 0 8 0
amappl9 136 234 0 231 1 0 1 1 0 8 0
amappl8 128 269 0 262 1 0 1 1 0 8 0
amappl7 120 115 0 104 1 0 1 1 0 8 0
amappl6 112 23 0 20 2 1 1 1 0 8 0
amappl5 104 128 0 113 1 0 1 1 0 8 0
amappl4 96 493 0 466 1 0 1 1 0 8 0
amappl3 88 104 0 99 1 0 1 1 0 8 0
amappl2 80 909 0 847 2 0 2 2 0 8 0
amappl1 72 15348 0 14908 23 5 18 18 0 8 8
amappl 80 478 0 448 1 0 1 1 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 226 0 211 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 226 0 211 1 0 1 1 0 8 0
vmmpekpl 168 6409 0 6382 2 0 2 2 0 8 0
vmmpepl 168 33003 0 32023 81 8 73 73 0 357 30
vmsppl 368 225 0 211 2 0 2 2 0 8 0
pdppl 4096 459 0 422 6 0 6 6 0 8 1
pvpl 32 113721 0 109620 104 0 104 104 0 265 69
pmappl 232 225 0 211 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 232 0 3 7 0 7 7 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
in_delmulti(3ff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000aa2900) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971
if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1142
tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329
ifioctl(fffffd806f68bc80,80206979,ffff800020ed1ed0,ffff800020ddd868) at ifioctl+0x3ea sys/net/if.c:1929
soo_ioctl(fffffd806cf62b58,80206979,ffff800020ed1ed0,ffff800020ddd868) at soo_ioctl+0x27c sys/kern/sys_socket.c:138
sys_ioctl(ffff800020ddd868,ffff800020ed1fe8,ffff800020ed2030) at sys_ioctl+0x4a5
syscall(ffff800020ed20b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020ed20b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff3430, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x58 sys/dev/kcov.c:88
__mp_acquire_count(ffffffff828c1408,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435
sleep_finish(ffff800020e188c0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418
sleep_finish_all(ffff800020e188c0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline]
sleep_finish_all(ffff800020e188c0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393
tsleep(ffffffff828b1dc4,118,ffffffff8245f46a,41e0d9) at tsleep+0x1cc sys/kern/kern_synch.c:155
doppoll(ffff800020ddcc38,7f7ffffeb9a0,3,ffff800020e18a58,0,ffff800020e18b10) at doppoll+0x57e sys/kern/sys_generic.c:968
sys_poll(ffff800020ddcc38,ffff800020e18ac0,ffff800020e18b10) at sys_poll+0xa6
syscall(ffff800020e18b90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e18b90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffeb980, count: -13
ddb{1}>