kernel: protection fault trap, code=0
Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
the kernel did not panic
ddb> trace
in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971
if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032
tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326
tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477
spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3670, count: -17
ddb> show registers
rdi 0x2
rsi 0
rbp 0xffff80001d783700
rbx 0
rdx 0
rcx 0x1
rax 0xffff8000ffff8280
r8 0xffff800000ad6300
r9 0xffffffff81256843 rt_ifa_purge+0x153
r10 0x5
r11 0xe5a19f6b16ef542d
r12 0
r13 0x3
r14 0xffbffffffedfffff
r15 0x1
rip 0xffffffff817ba21d in_delmulti+0x8d
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80001d7836a0
ss 0x10
in_delmulti+0x8d: movl 0xc(%r14),%r15d
ddb> show proc
PROC (syz-executor.1) pid=186318 stat=onproc
flags process=a<EXEC,EXITING,8ORPHAN> proc=2000<WEXIT>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff8018
process=0xffff80001d6c1280 user=0xffff80001d77e000, vmspace=0xfffffd806bc0a330
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
13337 229610 0 0 3 0x14280 nfsidl nfsio
63768 133270 0 0 3 0x14280 nfsidl nfsio
12717 482154 0 0 3 0x14280 nfsidl nfsio
59646 474036 0 0 3 0x14280 nfsidl nfsio
41011 307327 0 0 3 0x14280 nfsidl nfsio
43452 19311 0 0 3 0x14280 nfsidl nfsio
14016 174709 0 0 3 0x14280 nfsidl nfsio
28524 438310 0 0 3 0x14280 nfsidl nfsio
63102 177214 0 0 3 0x14280 nfsidl nfsio
63755 256386 0 0 3 0x14280 nfsidl nfsio
90405 150929 0 0 3 0x14280 nfsidl nfsio
20487 74470 0 0 3 0x14280 nfsidl nfsio
86572 510329 0 0 3 0x14280 nfsidl nfsio
56550 88612 0 0 3 0x14280 nfsidl nfsio
7368 360439 0 0 3 0x14280 nfsidl nfsio
41528 423607 0 0 3 0x14280 nfsidl nfsio
24714 398994 0 0 3 0x14280 nfsidl nfsio
21276 169139 0 0 3 0x14280 nfsidl nfsio
59406 358309 0 0 3 0x14280 nfsidl nfsio
92393 273661 0 0 3 0x14280 nfsidl nfsio
91952 298714 62909 0 3 0x82 thrsleep syz-fuzzer
91952 460064 62909 0 3 0x4000082 thrsleep syz-fuzzer
91952 383194 62909 0 3 0x4000082 thrsleep syz-fuzzer
91952 373814 62909 0 3 0x4000082 thrsleep syz-fuzzer
91952 292961 62909 0 3 0x4000082 thrsleep syz-fuzzer
91952 350123 62909 0 3 0x4000082 kqread syz-fuzzer
91952 241170 62909 0 3 0x4000082 thrsleep syz-fuzzer
62909 270569 57456 0 3 0x10008a pause ksh
57456 304749 28822 0 3 0x92 select sshd
77758 159315 1 0 3 0x100083 ttyin getty
28822 509226 1 0 3 0x80 select sshd
47351 123109 30622 73 3 0x100010 biowait syslogd
30622 91166 1 0 3 0x100082 netio syslogd
59326 30201 1 77 2 0x100010 dhclient
52236 184756 1 0 3 0x80 poll dhclient
32863 12538 0 0 3 0x14200 bored smr
26602 272022 0 0 3 0x14200 pgzero zerothread
88780 38053 0 0 3 0x14200 aiodoned aiodoned
4933 267443 0 0 3 0x14200 syncer update
4753 3847 0 0 3 0x14200 cleaner cleaner
49347 215855 0 0 3 0x14200 reaper reaper
92428 377 0 0 3 0x14200 pgdaemon pagedaemon
12660 65949 0 0 3 0x14200 bored crynlk
95662 92236 0 0 3 0x14200 bored crypto
55323 26483 0 0 3 0x40014200 acpi0 acpi0
39033 392480 0 0 2 0x14200 softnet
92142 520361 0 0 2 0x14200 systqmp
42496 17327 0 0 3 0x14200 bored systq
57695 171806 0 0 3 0x40014200 bored softclock
41318 509101 0 0 3 0x40014200 idle0
1 244830 0 0 3 0x82 wait 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 9459 6328K 6595K 78643K 10661 0
pcb 13 8K 8K 78643K 39 0
rtable 76 2K 7K 78643K 327 0
ifaddr 42 10K 13K 78643K 104 0
sysctl 2 0K 0K 78643K 2 0
counters 20 16K 16K 78643K 24 0
ioctlops 0 0K 4K 78643K 168 0
iov 0 0K 12K 78643K 7 0
mount 1 1K 1K 78643K 1 0
vnodes 1220 77K 77K 78643K 1262 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 0K 0K 78643K 42 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 4 9K 25K 78643K 165 0
proc 49 38K 63K 78643K 400 0
subproc 14 0K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 8 0
in_multi 28 1K 2K 78643K 57 0
ether_multi 1 0K 0K 78643K 3 0
mrt 0 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 37 175K 175K 78643K 37 0
exec 0 0K 1K 78643K 200 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 121 38K 40K 78643K 1267 0
UVM aobj 16 4K 4K 78643K 17 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 14 0
NDP 6 0K 0K 78643K 16 0
temp 74 3857K 3921K 78643K 2494 0
kqueue 3 4K 6K 78643K 10 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 6 1 0 1 1 0 8 0
rtpcb 88 29 0 27 1 0 1 1 0 8 0
rtentry 112 58 0 29 2 0 2 2 0 8 0
unpcb 120 113 0 105 1 0 1 1 0 8 0
syncache 272 4 0 4 1 1 0 1 0 8 0
tcpqe 32 117 0 117 1 1 0 1 0 8 0
tcpcb 592 49 0 45 2 1 1 2 0 8 0
inpcb 296 155 0 148 2 1 1 2 0 8 0
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 10 0 7 1 0 1 1 0 8 0
pfosfp 40 9 0 0 1 0 1 1 0 8 0
pfosfpen 112 21 0 0 1 0 1 1 0 8 0
pfrktable 1344 34 0 34 1 1 0 1 0 8 0
pftag 88 8 0 8 1 1 0 1 0 8 0
pfrule 1360 4 0 4 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 262 0 90 14 2 12 14 0 8 0
art_table 32 263 0 90 2 0 2 2 0 8 0
art_node 16 57 0 21 1 0 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 38 0 28 1 0 1 1 0 8 0
shmpl 112 14 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1555 0 158 88 0 88 88 0 8 0
ffsino 240 1555 0 158 83 0 83 83 0 8 0
nchpl 144 1946 0 357 60 0 60 60 0 8 0
uvmvnodes 72 1633 0 0 30 0 30 30 0 8 0
vnodes 208 1633 0 0 86 0 86 86 0 8 0
namei 1024 5098 0 5098 1 1 0 1 0 8 0
vcpupl 1984 1 0 0 1 0 1 1 0 8 0
vmpool 528 4 0 3 1 0 1 1 0 8 0
pfiaddrpl 120 10 0 10 1 1 0 1 0 8 0
scxspl 200 5710 0 5709 1 0 1 1 0 8 0
plimitpl 152 28 0 20 1 0 1 1 0 8 0
sigapl 424 368 0 321 6 0 6 6 0 8 0
futexpl 56 2333 0 2333 1 1 0 1 0 8 0
knotepl 112 79 0 63 1 0 1 1 0 8 0
kqueuepl 152 21 0 19 1 0 1 1 0 8 0
pipepl 272 98 0 89 2 1 1 2 0 8 0
fdescpl 432 334 0 321 2 0 2 2 0 8 0
filepl 120 1783 0 1708 5 2 3 5 0 8 0
lockfpl 104 23 0 22 1 0 1 1 0 8 0
lockfspl 48 9 0 8 1 0 1 1 0 8 0
sessionpl 120 18 0 8 1 0 1 1 0 8 0
pgrppl 48 18 0 8 1 0 1 1 0 8 0
ucredpl 96 121 0 114 1 0 1 1 0 8 0
zombiepl 144 323 0 319 1 0 1 1 0 8 0
processpl 944 368 0 319 7 0 7 7 0 8 0
procpl 632 534 0 479 5 0 5 5 0 8 0
sockpl 400 299 0 282 4 2 2 4 0 8 0
mcl64k 65536 2 0 2 1 1 0 1 0 8 0
mcl12k 12288 2 0 2 1 1 0 1 0 8 0
mcl9k 9216 3 0 3 1 1 0 1 0 8 0
mcl8k 8192 7 0 7 1 1 0 1 0 8 0
mcl4k 4096 13 0 13 2 2 0 1 0 8 0
mcl2k 2048 95446 0 95402 17 10 7 14 0 8 0
mtagpl 96 10 0 10 2 1 1 1 0 8 1
mbufpl 256 151420 0 151360 13 4 9 10 0 8 0
bufpl 280 4711 0 116 329 0 329 329 0 8 0
anonpl 16 53757 0 38676 81 1 80 80 0 107 8
amapchunkpl 152 2030 0 1841 21 2 19 19 0 158 11
amappl16 192 1549 0 640 47 0 47 47 0 8 1
amappl15 184 2 0 1 1 0 1 1 0 8 0
amappl14 176 13 0 10 1 0 1 1 0 8 0
amappl13 168 41 0 37 1 0 1 1 0 8 0
amappl12 160 25 0 21 1 0 1 1 0 8 0
amappl11 152 50 0 41 1 0 1 1 0 8 0
amappl10 144 47 0 41 1 0 1 1 0 8 0
amappl9 136 392 0 390 1 0 1 1 0 8 0
amappl8 128 334 0 306 1 0 1 1 0 8 0
amappl7 120 143 0 133 1 0 1 1 0 8 0
amappl6 112 24 0 19 1 0 1 1 0 8 0
amappl5 104 244 0 235 1 0 1 1 0 8 0
amappl4 96 432 0 410 1 0 1 1 0 8 0
amappl3 88 124 0 113 1 0 1 1 0 8 0
amappl2 80 1780 0 1723 2 0 2 2 0 8 0
amappl1 72 16699 0 16312 23 14 9 17 0 8 0
amappl 80 780 0 729 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 16 0 1 1 0 1 1 0 8 0
uaddrrnd 24 338 0 324 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 338 0 324 1 0 1 1 0 8 0
vmmpekpl 168 6345 0 6321 2 0 2 2 0 8 0
vmmpepl 168 48827 0 46946 128 24 104 123 0 357 16
vmsppl 272 337 0 324 2 0 2 2 0 8 1
pdppl 4096 682 0 649 6 1 5 6 0 8 0
pvpl 32 201226 0 183154 301 17 284 298 0 265 115
pmappl 200 337 0 324 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 242 0 29 7 0 7 7 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971
if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032
tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326
tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477
spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3670, count: -17
ddb> machine ddbcpu 1
No such command
ddb> trace
in_delmulti(ffbffffffedfffff) at in_delmulti+0x8d sys/netinet/in.c:914
in_purgeaddr(ffff800000ad6300) at in_purgeaddr+0x156 sys/netinet/in.c:760
in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971
if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032
tun_clone_destroy(ffff800000ac7000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326
tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477
spec_close(ffff80001d783930) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805d735680,7,fffffd806c3bfb40,ffff8000ffff8280) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd805eab2e88,ffff8000ffff8280) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd805eab2e88,ffff8000ffff8280) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd805eab2e88,ffff8000ffff8280) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff8280) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff8280,0,9,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff8000ffff8280,9) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff8000ffff8280) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d783db0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d783db0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3670, count: -17