panic: receive 1: so 0xfffffd805da89af8, so_type 2, sb_cc 167
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*235267 49398 73 0x100010 0 0 syslogd
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821a3d3e) at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd805da89af8,ffff80001d3b6230,ffff80001d3b61f8,0,0,ffff80001d3b6324) at soreceive+0x16ac sys/kern/uipc_socket.c:823
recvit(ffff80001d3b8ae0,8,ffff80001d3b62f8,7f7ffffd0df4,ffff80001d3b63e0) at recvit+0x32c sys/kern/uipc_syscalls.c:817
sys_recvfrom(ffff80001d3b8ae0,ffff80001d3b6390,ffff80001d3b63e0) at sys_recvfrom+0xd0 sys/kern/uipc_syscalls.c:717
syscall(ffff80001d3b6460) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd0d70, count: 8
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
receive 1: so 0xfffffd805da89af8, so_type 2, sb_cc 167
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821a3d3e) at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd805da89af8,ffff80001d3b6230,ffff80001d3b61f8,0,0,ffff80001d3b6324) at soreceive+0x16ac sys/kern/uipc_socket.c:823
recvit(ffff80001d3b8ae0,8,ffff80001d3b62f8,7f7ffffd0df4,ffff80001d3b63e0) at recvit+0x32c sys/kern/uipc_syscalls.c:817
sys_recvfrom(ffff80001d3b8ae0,ffff80001d3b6390,ffff80001d3b63e0) at sys_recvfrom+0xd0 sys/kern/uipc_syscalls.c:717
syscall(ffff80001d3b6460) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd0d70, count: -7
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d3b6040
rbx 0xffff80001d3b60f0
rdx 0x2
rcx 0
rax 0
r8 0xffff80001d3b6000
r9 0x1
r10 0
r11 0xcfbde64ac4ed5950
r12 0x3000000008
r13 0xffff80001d3b6050
r14 0x100
r15 0x1
rip 0xffffffff81e30268 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d3b6030
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syslogd) pid=235267 stat=onproc
flags process=100010<SUGID,PLEDGE> proc=0
pri=17, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff80001d34aad8,0xffff80001d3b7500
process=0xffff8000ffffd888 user=0xffff80001d3b1000, vmspace=0xfffffd806bc09770
estcpu=0, cpticks=3, pctcpu=0.9
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22213 139954 73419 0 2 0 syz-executor.0
22213 371844 73419 0 3 0x4000080 poll syz-executor.0
47941 61191 28263 0 2 0 syz-executor.1
47941 136568 28263 0 3 0x4000080 kqread syz-executor.1
47941 355119 28263 0 3 0x4000080 pipewr syz-executor.1
47941 505167 28263 0 3 0x4000080 fsleep syz-executor.1
73419 343189 87682 0 3 0x82 nanosleep syz-executor.0
28263 168484 87682 0 2 0x482 syz-executor.1
87682 230581 51447 0 3 0x82 thrsleep syz-fuzzer
87682 304308 51447 0 3 0x4000082 thrsleep syz-fuzzer
87682 155803 51447 0 3 0x4000082 thrsleep syz-fuzzer
87682 256716 51447 0 3 0x4000082 thrsleep syz-fuzzer
87682 32563 51447 0 3 0x4000082 thrsleep syz-fuzzer
87682 175251 51447 0 3 0x4000082 kqread syz-fuzzer
87682 178525 51447 0 3 0x4000082 thrsleep syz-fuzzer
87682 75027 51447 0 3 0x4000082 thrsleep syz-fuzzer
51447 373887 20592 0 3 0x10008a pause ksh
20592 156192 28955 0 3 0x92 select sshd
48084 518727 1 0 3 0x100083 ttyin getty
28955 522460 1 0 3 0x80 select sshd
*49398 235267 66840 73 7 0x100010 syslogd
66840 342154 1 0 3 0x100082 netio syslogd
27382 13913 1 77 3 0x100090 poll dhclient
31924 457441 1 0 3 0x80 poll dhclient
71424 350261 0 0 2 0x14200 zerothread
10943 266554 0 0 3 0x14200 aiodoned aiodoned
54612 158959 0 0 3 0x14200 syncer update
93126 491473 0 0 3 0x14200 cleaner cleaner
31539 222844 0 0 3 0x14200 reaper reaper
37072 212310 0 0 3 0x14200 pgdaemon pagedaemon
68126 252038 0 0 3 0x14200 bored crynlk
51213 492860 0 0 3 0x14200 bored crypto
86488 265188 0 0 3 0x40014200 acpi0 acpi0
13628 342556 0 0 3 0x14200 bored softnet
37082 465938 0 0 3 0x14200 bored systqmp
92468 348688 0 0 3 0x14200 bored systq
6627 138375 0 0 3 0x40014200 bored softclock
82148 179748 0 0 3 0x40014200 idle0
56069 423759 0 0 3 0x14200 bored smr
1 347218 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 9484 6340K 6582K 78643K 10659 0
pcb 13 8K 8K 78643K 35 0
rtable 110 3K 3K 78643K 289 0
ifaddr 52 12K 12K 78643K 70 0
counters 21 16K 16K 78643K 23 0
ioctlops 0 0K 2K 78643K 25 0
iov 0 0K 16K 78643K 14 0
mount 1 1K 1K 78643K 1 0
vnodes 1222 77K 77K 78643K 1292 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 3 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 36 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1794 195K 288K 78643K 12646 0
file desc 6 17K 25K 78643K 121 0
sigio 0 0K 0K 78643K 4 0
proc 48 38K 54K 78643K 449 0
subproc 32 2K 2K 78643K 68 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 206 0
in_multi 47 2K 2K 78643K 72 0
ether_multi 1 0K 0K 78643K 2 0
mrt 0 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 157 705K 705K 78643K 157 0
exec 0 0K 1K 78643K 211 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 110 21K 23K 78643K 1160 0
UVM aobj 6 2K 2K 78643K 6 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 8 0
NDP 7 0K 0K 78643K 17 0
temp 73 3004K 3084K 78643K 5452 0
kqueue 8 14K 14K 78643K 17 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 10 0 4 1 0 1 1 0 8 0
rtpcb 80 28 0 26 1 0 1 1 0 8 0
rtentry 112 68 0 23 2 0 2 2 0 8 0
unpcb 120 170 0 159 2 0 2 2 0 8 1
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 130 0 130 1 1 0 1 0 8 0
tcpcb 544 138 0 133 3 1 2 2 0 8 1
inpcb 280 226 0 218 5 2 3 3 0 8 2
rttmr 72 2 0 2 2 1 1 1 0 8 1
nd6 48 8 0 4 1 0 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 308 0 90 14 0 14 14 0 8 0
art_table 32 310 0 90 2 0 2 2 0 8 0
art_node 16 67 0 26 1 0 1 1 0 8 0
sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0
semupl 112 2 0 2 1 0 1 1 0 8 1
semapl 112 34 0 24 1 0 1 1 0 8 0
shmpl 112 4 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1504 0 105 46 0 46 46 0 8 0
ffsino 240 1504 0 105 83 0 83 83 0 8 0
nchpl 144 1823 0 224 60 0 60 60 0 8 0
uvmvnodes 72 1608 0 0 30 0 30 30 0 8 0
vnodes 208 1608 0 0 85 0 85 85 0 8 0
namei 1024 4861 0 4861 2 1 1 1 0 8 1
vmpool 528 2 0 2 1 0 1 1 0 8 1
scxspl 192 9704 0 9704 1 0 1 1 0 8 1
plimitpl 152 24 0 17 1 0 1 1 0 8 0
sigapl 432 286 0 272 2 0 2 2 0 8 0
futexpl 56 2203 0 2202 3 2 1 1 0 8 0
knotepl 112 92 0 68 1 0 1 1 0 8 0
kqueuepl 104 37 0 28 1 0 1 1 0 8 0
pipelkpl 16 92 0 81 1 0 1 1 0 8 0
pipepl 120 184 0 163 1 0 1 1 0 8 0
fdescpl 432 287 0 272 2 0 2 2 0 8 0
filepl 120 1899 0 1788 9 2 7 7 0 8 3
lockfpl 104 37 0 36 1 0 1 1 0 8 0
lockfspl 48 13 0 12 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 96 190 0 183 1 0 1 1 0 8 0
zombiepl 144 272 0 272 1 0 1 1 0 8 1
processpl 896 301 0 272 4 0 4 4 0 8 0
procpl 624 389 0 349 5 1 4 4 0 8 0
sockpl 400 424 0 403 11 4 7 7 0 8 4
mcl64k 65536 2 0 2 1 0 1 1 0 8 1
mcl16k 16384 2 0 2 2 1 1 1 0 8 1
mcl12k 12288 2 0 2 1 0 1 1 0 8 1
mcl9k 9216 1 0 1 1 0 1 1 0 8 1
mcl8k 8192 4 0 4 2 1 1 1 0 8 1
mcl4k 4096 21 0 21 3 2 1 1 0 8 1
mcl2k 2048 63888 0 63850 16 10 6 15 0 8 0
mtagpl 80 8 0 4 2 1 1 1 0 8 0
mbufpl 256 101818 0 101729 11 1 10 10 0 8 3
bufpl 280 5342 0 181 369 0 369 369 0 8 0
anonpl 16 47710 0 32468 79 1 78 78 0 107 16
amapchunkpl 152 1843 0 1701 16 0 16 16 0 158 9
amappl16 192 1156 0 301 44 1 43 43 0 8 0
amappl15 184 54 0 50 1 0 1 1 0 8 0
amappl14 176 60 0 56 1 0 1 1 0 8 0
amappl13 168 24 0 22 1 0 1 1 0 8 0
amappl12 160 9 0 7 1 0 1 1 0 8 0
amappl11 152 67 0 56 1 0 1 1 0 8 0
amappl10 144 9 0 8 1 0 1 1 0 8 0
amappl9 136 592 0 588 1 0 1 1 0 8 0
amappl8 128 132 0 111 1 0 1 1 0 8 0
amappl7 120 104 0 92 1 0 1 1 0 8 0
amappl6 112 67 0 61 1 0 1 1 0 8 0
amappl5 104 155 0 145 1 0 1 1 0 8 0
amappl4 96 523 0 493 1 0 1 1 0 8 0
amappl3 88 138 0 129 1 0 1 1 0 8 0
amappl2 80 1374 0 1296 3 1 2 3 0 8 0
amappl1 72 15246 0 14792 26 16 10 20 0 8 0
amappl 80 638 0 592 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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 289 0 274 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 289 0 274 1 0 1 1 0 8 0
vmmpekpl 168 6155 0 6129 2 0 2 2 0 8 0
vmmpepl 168 43320 0 41253 134 22 112 113 0 357 22
vmsppl 272 288 0 274 3 1 2 2 0 8 1
pdppl 4096 584 0 548 6 1 5 6 0 8 0
pvpl 32 186756 0 168299 289 19 270 289 0 265 121
pmappl 200 288 0 274 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 169 0 26 5 0 5 5 0 8 0