panic: receive 3: so 0xfffffd806f6e57d0, so_type 3, m 0xfffffd806c8f0000, m_type 192
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
362503 27605 0 0 0 0 syz-executor.0
*392812 2737 0 0 0 1K dhclient
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821af0a7) at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd806f6e57d0,0,ffff800020abd448,0,0,ffff800020abd354) at soreceive+0x1727
soo_read(fffffd807d3fc1c8,ffff800020abd448,0) at soo_read+0x53 sys/kern/sys_socket.c:70
dofilereadv(ffff800020a7c9c8,6,ffff800020abd448,0,ffff800020abd530) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236
sys_read(ffff800020a7c9c8,ffff800020abd4e0,ffff800020abd530) at sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020abd5b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020abd5b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd9380, count: 7
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
receive 3: so 0xfffffd806f6e57d0, so_type 3, m 0xfffffd806c8f0000, m_type 192
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821af0a7) at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd806f6e57d0,0,ffff800020abd448,0,0,ffff800020abd354) at soreceive+0x1727
soo_read(fffffd807d3fc1c8,ffff800020abd448,0) at soo_read+0x53 sys/kern/sys_socket.c:70
dofilereadv(ffff800020a7c9c8,6,ffff800020abd448,0,ffff800020abd530) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236
sys_read(ffff800020a7c9c8,ffff800020abd4e0,ffff800020abd530) at sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020abd5b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020abd5b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd9380, count: -8
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020abd190
rbx 0xffff800020abd240
rdx 0xffff800020a7c9c8
rcx 0
rax 0
r8 0xffffffff812ffc6f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xf17095cb24eaef4a
r12 0x3000000008
r13 0xffff800020abd1a0
r14 0x100
r15 0x1
rip 0xffffffff81ae2228 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020abd180
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (dhclient) pid=392812 stat=onproc
flags process=0 proc=0
pri=24, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020a7cc38,0xffff800020a7ceb8
process=0xffff800020a90f10 user=0xffff800020ab8000, vmspace=0xfffffd807f000000
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
13138 308371 69029 0 2 0 syz-executor.1
13138 395514 69029 0 3 0x4000080 fsleep syz-executor.1
27605 362503 18524 0 7 0 syz-executor.0
27605 9867 18524 0 2 0x4000000 syz-executor.0
72149 168607 0 0 3 0x14200 bored sosplice
69029 323674 69173 0 3 0x82 nanosleep syz-executor.1
18524 230094 69173 0 3 0x82 nanosleep syz-executor.0
69173 67421 33220 0 3 0x82 thrsleep syz-fuzzer
69173 2550 33220 0 3 0x4000082 nanosleep syz-fuzzer
69173 238001 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 78464 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 431789 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 270024 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 261996 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 76066 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 227615 33220 0 3 0x4000082 kqread syz-fuzzer
69173 80856 33220 0 3 0x4000082 thrsleep syz-fuzzer
69173 447801 33220 0 3 0x4000082 thrsleep syz-fuzzer
33220 415349 40718 0 3 0x10008a pause ksh
40718 195964 72986 0 3 0x92 select sshd
45233 175604 1 0 3 0x100083 ttyin getty
72986 386697 1 0 3 0x80 select sshd
45772 325082 57422 74 3 0x100092 bpf pflogd
57422 106428 1 0 3 0x80 netio pflogd
84594 449930 24375 73 3 0x100090 kqread syslogd
24375 247400 1 0 3 0x100082 netio syslogd
3655 502803 1 77 3 0x100090 poll dhclient
* 2737 392812 1 0 7 0 dhclient
32826 85152 0 0 2 0x14200 zerothread
45426 31495 0 0 3 0x14200 aiodoned aiodoned
75737 287920 0 0 3 0x14200 syncer update
79277 483838 0 0 3 0x14200 cleaner cleaner
54365 174810 0 0 3 0x14200 reaper reaper
66226 202115 0 0 3 0x14200 pgdaemon pagedaemon
85463 316806 0 0 3 0x14200 bored crynlk
65239 76778 0 0 3 0x14200 bored crypto
64146 160152 0 0 3 0x40014200 acpi0 acpi0
34900 253293 0 0 3 0x40014200 idle1
86281 509005 0 0 3 0x14200 bored softnet
57682 332444 0 0 3 0x14200 bored systqmp
21408 235373 0 0 3 0x14200 bored systq
82858 147491 0 0 3 0x40014200 bored softclock
13185 268960 0 0 3 0x40014200 idle0
34172 196357 0 0 3 0x14200 bored smr
1 297366 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 2737 (dhclient) thread 0xffff800020a7c9c8 (392812)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82645298)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 solock+0x66 sys/kern/uipc_socket2.c:292
#2 soreceive+0xb3a sys/kern/uipc_socket.c:950
#3 soo_read+0x53 sys/kern/sys_socket.c:70
#4 dofilereadv+0x1a1 sys/kern/sys_generic.c:236
#5 sys_read+0x83 sys/kern/sys_generic.c:156
#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
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9488 6467K 7109K 78643K 10685 0
pcb 13 8K 8K 78643K 25 0
rtable 105 3K 3K 78643K 201 0
ifaddr 49 11K 11K 78643K 52 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 4K 78643K 1471 0
iov 0 0K 16K 78643K 5 0
mount 1 1K 1K 78643K 1 0
vnodes 1225 77K 77K 78643K 1252 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 3 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 59 0
sigio 0 0K 0K 78643K 3 0
proc 60 63K 83K 78643K 446 0
subproc 32 2K 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 9 0
in_multi 33 2K 2K 78643K 37 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 43 201K 201K 78643K 43 0
exec 0 0K 1K 78643K 207 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 116 22K 22K 78643K 1122 0
UVM aobj 8 2K 2K 78643K 8 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 7 0
NDP 7 0K 0K 78643K 11 0
temp 84 3015K 3078K 78643K 2174 0
kqueue 3 4K 16K 78643K 10 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 19 0 17 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 67 0 57 2 0 2 2 0 8 1
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 137 0 137 1 0 1 1 0 8 1
tcpcb 544 24 0 20 1 0 1 1 0 8 0
inpcb 280 81 0 74 2 0 2 2 0 8 1
nd6 48 4 0 0 1 0 1 1 0 8 0
pffrag 232 1 0 1 1 0 1 1 0 482 1
pffrnode 88 1 0 1 1 0 1 1 0 8 1
pffrent 40 45 0 45 1 0 1 1 0 8 1
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 15 0 0 1 0 1 1 0 8 0
pfstkey 112 15 0 0 1 0 1 1 0 8 0
pfstate 328 15 0 0 2 0 2 2 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 256 212 0 0 14 0 14 14 0 8 0
art_table 32 213 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
sysvmsgpl 40 22 0 13 1 0 1 1 0 8 0
semapl 112 1 0 1 1 0 1 1 0 8 1
shmpl 112 6 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1463 0 55 46 0 46 46 0 8 0
ffsino 272 1463 0 55 95 0 95 95 0 8 0
nchpl 144 1742 0 123 61 0 61 61 0 8 1
uvmvnodes 72 1533 0 0 28 0 28 28 0 8 0
vnodes 208 1533 0 0 81 0 81 81 0 8 0
namei 1024 4567 0 4567 1 0 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 192 5177 0 5177 4 1 3 3 0 8 3
plimitpl 152 16 0 7 1 0 1 1 0 8 0
sigapl 432 258 0 242 3 0 3 3 0 8 1
futexpl 56 720 0 719 1 0 1 1 0 8 0
knotepl 112 61 0 42 1 0 1 1 0 8 0
kqueuepl 104 18 0 16 1 0 1 1 0 8 0
pipelkpl 48 85 0 75 1 0 1 1 0 8 0
pipepl 120 170 0 151 1 0 1 1 0 8 0
fdescpl 496 259 0 242 3 0 3 3 0 8 0
filepl 152 1488 0 1383 7 0 7 7 0 8 2
lockfpl 104 11 0 10 1 0 1 1 0 8 0
lockfspl 48 6 0 5 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 99 0 90 1 0 1 1 0 8 0
zombiepl 144 242 0 242 1 0 1 1 0 8 1
processpl 960 275 0 242 5 0 5 5 0 8 0
procpl 624 350 0 305 5 0 5 5 0 8 1
sosppl 128 3 0 3 1 0 1 1 0 8 1
sockpl 400 167 0 148 6 0 6 6 0 8 4
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 166 0 0 20 0 20 20 0 8 0
mtagpl 80 3 0 0 1 0 1 1 0 8 0
mbufpl 256 369 0 0 23 0 23 23 0 8 0
bufpl 280 4155 0 192 284 0 284 284 0 8 0
anonpl 16 39114 0 24067 62 1 61 61 0 125 0
amapchunkpl 152 1108 0 956 8 0 8 8 0 158 0
amappl16 192 964 0 165 41 1 40 40 0 8 0
amappl15 184 82 0 76 1 0 1 1 0 8 0
amappl14 176 29 0 26 1 0 1 1 0 8 0
amappl12 160 5 0 4 1 0 1 1 0 8 0
amappl11 152 54 0 39 1 0 1 1 0 8 0
amappl10 144 26 0 18 1 0 1 1 0 8 0
amappl9 136 602 0 599 1 0 1 1 0 8 0
amappl8 128 131 0 104 2 0 2 2 0 8 0
amappl7 120 121 0 108 1 0 1 1 0 8 0
amappl6 112 60 0 53 1 0 1 1 0 8 0
amappl5 104 132 0 116 1 0 1 1 0 8 0
amappl4 96 511 0 480 1 0 1 1 0 8 0
amappl3 88 116 0 108 1 0 1 1 0 8 0
amappl2 80 1185 0 1100 3 1 2 3 0 8 0
amappl1 72 15644 0 15173 27 13 14 21 0 8 4
amappl 80 604 0 555 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 7 0 0 1 0 1 1 0 8 0
uaddrrnd 24 259 0 242 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 259 0 242 1 0 1 1 0 8 0
vmmpekpl 168 6059 0 6026 2 0 2 2 0 8 0
vmmpepl 168 39082 0 36984 129 9 120 120 0 357 28
vmsppl 368 258 0 242 2 0 2 2 0 8 0
pdppl 4096 525 0 484 6 0 6 6 0 8 0
pvpl 32 139039 0 120731 150 0 150 150 0 265 2
pmappl 232 258 0 242 2 0 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 184 0 3 6 0 6 6 0 8 0