uvm_fault(0xfffffd80074a6158, 0x4, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
igmp_leavegroup(ffff800000dcbe00,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000dcbe00) at in_delmulti+0xd3 sys/netinet/in.c:908
ip_freemoptions(ffff8000006ba790) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737
in_pcbdetach(fffffd806ed65168) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606
udp_detach(fffffd806e5f4948) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139
soclose(fffffd806e5f4948,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline]
soclose(fffffd806e5f4948,0) at soclose+0x80 sys/kern/uipc_socket.c:411
soo_close(fffffd807251a350,ffff80002a5d71f8) at soo_close+0x44
fdrop(fffffd807251a350,ffff80002a5d71f8) at fdrop+0xd5 sys/kern/kern_descrip.c:1274
closef(fffffd807251a350,ffff80002a5d71f8) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff80002a5d71f8) at fdfree+0xe3 sys/kern/kern_descrip.c:1190
exit1(ffff80002a5d71f8,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199
sys_exit(ffff80002a5d71f8,ffff80002a6650e0,ffff80002a665030) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002a6650e0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f5796969dd0, count: 1
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd80074a6158, 0x4, 0, 1) -> e
ddb> trace
igmp_leavegroup(ffff800000dcbe00,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000dcbe00) at in_delmulti+0xd3 sys/netinet/in.c:908
ip_freemoptions(ffff8000006ba790) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737
in_pcbdetach(fffffd806ed65168) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606
udp_detach(fffffd806e5f4948) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139
soclose(fffffd806e5f4948,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline]
soclose(fffffd806e5f4948,0) at soclose+0x80 sys/kern/uipc_socket.c:411
soo_close(fffffd807251a350,ffff80002a5d71f8) at soo_close+0x44
fdrop(fffffd807251a350,ffff80002a5d71f8) at fdrop+0xd5 sys/kern/kern_descrip.c:1274
closef(fffffd807251a350,ffff80002a5d71f8) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff80002a5d71f8) at fdfree+0xe3 sys/kern/kern_descrip.c:1190
exit1(ffff80002a5d71f8,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199
sys_exit(ffff80002a5d71f8,ffff80002a6650e0,ffff80002a665030) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002a6650e0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f5796969dd0, count: -14
ddb> show registers
rdi 0
rsi 0
rbp 0xffff80002a664c80
rbx 0x3
rdx 0
rcx 0x1
rax 0
r8 0x90
r9 0x1
r10 0x9ef3a67c3d6258f9
r11 0xd1c026ab436aaa58
r12 0
r13 0x3
r14 0xffff800000dcbe00
r15 0xffff8000006ab000
rip 0xffffffff8212401f igmp_leavegroup+0xaf
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a664c50
ss 0x10
igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d
ddb> show proc
PROC (syz-executor3315967969) tid=99242 pid=92189 tcnt=1 stat=onproc
flags process=8000008<EXITING> proc=2000<WEXIT>
runpri=51, usrpri=51, slppri=24, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff80002a5d6f68,0xffffffff82d9cde0
process=0xffff8000ffff6e20 user=0xffff80002a660000, vmspace=0xfffffd80074a6158
estcpu=1, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
79311 228595 28555 0 3 0x8000082 nanoslp syz-executor3315967969
28555 345265 44603 0 3 0x810008a sigsusp ksh
44603 462161 80234 0 3 0x1800009a kqread sshd
64025 473238 1 0 3 0x18100083 ttyin getty
80234 163259 1 0 3 0x18000088 kqread sshd
80326 431857 99520 73 3 0x19100090 kqread syslogd
99520 413985 1 0 3 0x18100082 sbwait syslogd
91323 230560 1 0 3 0x18100080 kqread resolvd
3039 338423 48347 77 3 0x18100092 kqread dhcpleased
23154 137822 48347 77 3 0x18100092 kqread dhcpleased
48347 393370 1 0 3 0x18000080 kqread dhcpleased
25344 469061 0 0 3 0x14200 bored smr
94621 30141 0 0 2 0x14200 zerothread
35860 162655 0 0 3 0x14200 aiodoned aiodoned
99344 270525 0 0 3 0x14200 syncer update
74942 463036 0 0 3 0x14200 cleaner cleaner
17363 160214 0 0 3 0x14200 reaper reaper
54375 41460 0 0 3 0x14200 pgdaemon pagedaemon
3953 40450 0 0 3 0x14200 bored viomb
36774 152891 0 0 3 0x40014200 acpi0 acpi0
12615 119697 0 0 3 0x14200 bored softnet3
42500 74475 0 0 3 0x14200 bored softnet2
72144 87449 0 0 3 0x14200 bored softnet1
22866 352107 0 0 3 0x14200 bored softnet0
68329 503570 0 0 3 0x14200 bored systqmp
76706 189639 0 0 3 0x14200 bored systq
10716 115604 0 0 3 0x40014200 tmoslp softclock
19542 418354 0 0 3 0x40014200 idle0
1 122511 0 0 3 0x8000082 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 10131 6381K 6412K 166960K 11209 0
pcb 15 10K 10K 166960K 15 0
rtable 58 1K 2K 166960K 110 0
pf 12 6K 6K 166960K 12 0
ifaddr 11 5K 5K 166960K 11 0
ifgroup 17 1K 1K 166960K 17 0
counters 22 16K 16K 166960K 22 0
ioctlops 0 0K 2K 166960K 21 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1259 79K 79K 166960K 1275 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 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 1 0K 0K 166960K 1 0
proc 55 58K 59K 166960K 246 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 2 0K 0K 166960K 2 0
in_multi 12 0K 0K 166960K 12 0
ether_multi 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 25 122K 122K 166960K 25 0
exec 0 0K 1K 166960K 243 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 96 4K 6K 166960K 2242 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 22 44K 48K 166960K 840 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 3 0K 0K 166960K 3 0
temp 1 6788K 6852K 166960K 2789 0
kqueue 11 16K 18K 166960K 24 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 20 0 17 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 144 34 0 20 1 0 1 1 0 8 0
syncache 336 5 0 5 1 0 1 1 0 8 1
tcpqe 32 209 0 209 1 0 1 1 0 8 1
tcpcb 808 8 0 5 1 0 1 1 0 8 0
arp 88 2 0 0 1 0 1 1 0 8 0
inpcb 360 28 0 20 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1502 0 40 92 0 92 92 0 8 0
ffsino 240 1502 0 40 86 0 86 86 0 8 0
nchpl 144 1686 0 47 61 0 61 61 0 8 0
uvmvnodes 80 1511 0 0 31 0 31 31 0 8 0
vnodes 216 1511 0 0 84 0 84 84 0 8 0
namei 1024 4341 0 4341 1 0 1 1 0 8 1
kstatmem 264 6 0 0 1 0 1 1 0 8 0
scxspl 216 5155 0 5155 2 0 2 2 1 8 2
plimitpl 152 16 0 10 1 0 1 1 0 8 0
sigapl 424 309 0 279 4 0 4 4 0 8 0
knotepl 120 3657 0 3628 2 0 2 2 0 8 1
kqueuepl 184 21 0 13 1 0 1 1 0 8 0
pipepl 288 87 0 84 1 0 1 1 0 8 0
fdescpl 432 293 0 279 2 0 2 2 0 8 0
filepl 120 1134 0 1077 2 0 2 2 0 8 0
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 104 66 0 56 1 0 1 1 0 8 0
zombiepl 144 280 0 279 1 0 1 1 0 8 0
processpl 1072 309 0 279 3 0 3 3 0 8 0
procpl 656 309 0 279 3 0 3 3 0 8 0
sockpl 472 82 0 57 4 0 4 4 0 8 0
mcl8k 8192 4 0 4 1 0 1 1 0 8 1
mcl4k 4096 10 0 10 1 0 1 1 0 8 1
mcl2k 2048 12334 0 12291 31 17 14 31 0 8 8
mtagpl 96 4 0 4 1 0 1 1 0 8 1
mbufpl 256 19845 0 19797 16 4 12 16 0 8 7
bufpl 280 2510 0 95 173 0 173 173 0 8 0
anonpl 24 184012 0 182235 23 0 23 23 0 188 11
amapchunkpl 152 8474 0 8342 7 0 7 7 0 158 1
amappl16 200 5344 0 5344 5 0 5 5 0 8 5
amappl15 192 11 0 11 1 0 1 1 0 8 1
amappl14 184 116 0 107 1 0 1 1 0 8 0
amappl13 176 10 0 10 1 0 1 1 0 8 1
amappl12 168 805 0 793 1 0 1 1 0 8 0
amappl11 160 84 0 74 1 0 1 1 0 8 0
amappl10 152 13 0 13 1 0 1 1 0 8 1
amappl9 144 157 0 157 1 0 1 1 0 8 1
amappl8 136 41 0 39 1 0 1 1 0 8 0
amappl7 128 15 0 14 1 0 1 1 0 8 0
amappl6 120 169 0 159 1 0 1 1 0 8 0
amappl5 112 119 0 107 1 0 1 1 0 8 0
amappl4 104 403 0 374 1 0 1 1 0 8 0
amappl3 96 2309 0 2285 1 0 1 1 0 8 0
amappl2 88 581 0 528 2 0 2 2 0 8 0
amappl1 80 8793 0 8392 10 0 10 10 0 8 1
amappl 88 1940 0 1890 2 0 2 2 0 92 0
dma4096 4096 1 0 1 1 0 1 1 0 8 1
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 0 1 1 0 8 1
dma128 128 253 0 253 1 0 1 1 0 8 1
dma64 64 6 0 6 1 0 1 1 0 8 1
dma32 32 7 0 7 1 0 1 1 0 8 1
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 293 0 279 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 293 0 279 1 0 1 1 0 8 0
vmmpekpl 168 5527 0 5511 1 0 1 1 0 8 0
vmmpepl 168 34636 0 33730 46 0 46 46 0 357 2
vmsppl 344 292 0 279 2 0 2 2 0 8 0
rwobjpl 24 19049 0 16941 14 0 14 14 0 8 1
pdppl 4096 592 0 558 48 14 34 40 0 8 0
pvpl 32 276129 0 272017 52 0 52 52 0 265 15
pmappl 216 292 0 279 1 0 1 1 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 292 0 35 9 0 9 9 0 8 1
ddb> machine ddbcpu 0
No such command
ddb> trace
igmp_leavegroup(ffff800000dcbe00,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000dcbe00) at in_delmulti+0xd3 sys/netinet/in.c:908
ip_freemoptions(ffff8000006ba790) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737
in_pcbdetach(fffffd806ed65168) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606
udp_detach(fffffd806e5f4948) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139
soclose(fffffd806e5f4948,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline]
soclose(fffffd806e5f4948,0) at soclose+0x80 sys/kern/uipc_socket.c:411
soo_close(fffffd807251a350,ffff80002a5d71f8) at soo_close+0x44
fdrop(fffffd807251a350,ffff80002a5d71f8) at fdrop+0xd5 sys/kern/kern_descrip.c:1274
closef(fffffd807251a350,ffff80002a5d71f8) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff80002a5d71f8) at fdfree+0xe3 sys/kern/kern_descrip.c:1190
exit1(ffff80002a5d71f8,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199
sys_exit(ffff80002a5d71f8,ffff80002a6650e0,ffff80002a665030) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002a6650e0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f5796969dd0, count: -14
ddb> machine ddbcpu 1
No such command
ddb> trace
igmp_leavegroup(ffff800000dcbe00,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000dcbe00) at in_delmulti+0xd3 sys/netinet/in.c:908
ip_freemoptions(ffff8000006ba790) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737
in_pcbdetach(fffffd806ed65168) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606
udp_detach(fffffd806e5f4948) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139
soclose(fffffd806e5f4948,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline]
soclose(fffffd806e5f4948,0) at soclose+0x80 sys/kern/uipc_socket.c:411
soo_close(fffffd807251a350,ffff80002a5d71f8) at soo_close+0x44
fdrop(fffffd807251a350,ffff80002a5d71f8) at fdrop+0xd5 sys/kern/kern_descrip.c:1274
closef(fffffd807251a350,ffff80002a5d71f8) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff80002a5d71f8) at fdfree+0xe3 sys/kern/kern_descrip.c:1190
exit1(ffff80002a5d71f8,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199
sys_exit(ffff80002a5d71f8,ffff80002a6650e0,ffff80002a665030) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002a6650e0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f5796969dd0, count: -14