panic: assertwaitok: non-zero mutex count: 1
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
198283 22761 0 0x2 0x4000000 0 syz-executor3014581156
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827c19a3) at panic+0x17b sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360
sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414
rwsleep(fffffd806d86d320,ffffffff82c4a100,118,ffffffff827afd95,0) at rwsleep+0xab sys/kern/kern_synch.c:300
sosleep_nsec(fffffd806d86d200,fffffd806d86d320,118,ffffffff827afd95,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468
sblock(fffffd806d86d200,fffffd806d86d2d0,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514
soreceive(fffffd806d86d200,ffff80002a236938,ffff80002a2368f8,0,0,ffff80002a236abc,27bd27254a5463f2) at soreceive+0x5fe sys/kern/uipc_socket.c:837
recvit(ffff80002a1ce550,5,ffff80002a236a90,0,ffff80002a236a88) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a1ce550,ffff80002a236b90,ffff80002a236be0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a236c60) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a236c60) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd56cdc45b40, count: 2
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
*cpu1: assertwaitok: non-zero mutex count: 1
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827c19a3) at panic+0x17b sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360
sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414
rwsleep(fffffd806d86d320,ffffffff82c4a100,118,ffffffff827afd95,0) at rwsleep+0xab sys/kern/kern_synch.c:300
sosleep_nsec(fffffd806d86d200,fffffd806d86d320,118,ffffffff827afd95,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468
sblock(fffffd806d86d200,fffffd806d86d2d0,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514
soreceive(fffffd806d86d200,ffff80002a236938,ffff80002a2368f8,0,0,ffff80002a236abc,27bd27254a5463f2) at soreceive+0x5fe sys/kern/uipc_socket.c:837
recvit(ffff80002a1ce550,5,ffff80002a236a90,0,ffff80002a236a88) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a1ce550,ffff80002a236b90,ffff80002a236be0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a236c60) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a236c60) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd56cdc45b40, count: -13
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a2364a0
rbx 0xffff800029d2cba7
rdx 0x3fd
rcx 0
rax 0x2d
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc6904616f179d210
r11 0xc80610c20958701
r12 0xffff800029d2c9a8
r13 0
r14 0
r15 0x1
rip 0xffffffff822e738c db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002a236490
ss 0x10
db_enter+0x1c: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor3014581156) tid=26884 pid=22761 tcnt=4 stat=sleep
flags process=2<EXEC> proc=4000080<SINTR,THREAD>
runpri=24, usrpri=53, slppri=24, nice=20
wchan=0xfffffd806d86d320, wmesg=netlck, ps_single=0x0
forw=0x0, list=0xffff80002a185d50,0xffff80002a1ce2b8
process=0xffff8000ffff69f0 user=0xffff80002a231000, vmspace=0xfffffd806e9b31e0
estcpu=3, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22761 81306 61628 0 3 0x82 nanoslp syz-executor3014581156
22761 198283 61628 0 7 0x4000002 syz-executor3014581156
*22761 26884 61628 0 3 0x4000082 netlck syz-executor3014581156
22761 280243 61628 0 3 0x4000082 fsleep syz-executor3014581156
61628 174040 36343 0 3 0x10008a sigsusp ksh
36343 381081 90090 0 3 0x9a kqread sshd
25172 516296 1 0 3 0x100083 ttyin getty
90090 268151 1 0 3 0x88 kqread sshd
20798 171767 65414 74 3 0x1100092 bpf pflogd
65414 60740 1 0 3 0x80 netio pflogd
72019 440083 87753 73 3 0x1100090 kqread syslogd
87753 473010 1 0 3 0x100082 netio syslogd
44932 104283 1 0 3 0x100080 kqread resolvd
4252 291308 42587 77 3 0x100092 kqread dhcpleased
69385 486072 42587 77 3 0x100092 kqread dhcpleased
42587 499737 1 0 3 0x80 kqread dhcpleased
64513 396002 0 0 3 0x14200 bored smr
74600 333886 0 0 3 0x14200 pgzero zerothread
96240 219718 0 0 3 0x14200 aiodoned aiodoned
12174 67676 0 0 3 0x14200 syncer update
99807 186239 0 0 3 0x14200 cleaner cleaner
30016 169706 0 0 3 0x14200 reaper reaper
16021 2173 0 0 3 0x14200 pgdaemon pagedaemon
79485 14675 0 0 3 0x14200 bored viomb
83583 457085 0 0 3 0x40014200 acpi0 acpi0
34995 372446 0 0 3 0x40014200 idle1
93761 95749 0 0 3 0x14200 bored softnet3
2263 187180 0 0 3 0x14200 bored softnet2
37558 509583 0 0 3 0x14200 bored softnet1
47301 70488 0 0 3 0x14200 bored softnet0
49275 345517 0 0 3 0x14200 bored systqmp
99081 236092 0 0 3 0x14200 bored systq
17414 189941 0 0 3 0x14200 tmoslp softclockmp
64230 290626 0 0 3 0x40014200 tmoslp softclock
41717 237146 0 0 3 0x40014200 idle0
1 302051 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive sched_lock &sched_lock r = 0 (0xffffffff82d3bdb0)
#0 witness_lock+0x447
#1 sleep_finish+0x142 sys/kern/kern_synch.c:398
#2 rwsleep+0xab sys/kern/kern_synch.c:300
#3 sosleep_nsec+0xff sys/kern/uipc_socket2.c:468
#4 sblock+0x1c4 sys/kern/uipc_socket2.c:514
#5 soreceive+0x5fe sys/kern/uipc_socket.c:837
#6 recvit+0x31b sys/kern/uipc_syscalls.c:1082
#7 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
#8 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
#8 syscall+0x50f sys/arch/amd64/amd64/trap.c:606
#9 Xsyscall+0x128
exclusive mutex &inp->inp_mtx r = 0 (0xfffffd806f514ad0)
#0 witness_lock+0x447
#1 mtx_enter_try+0x104
#2 mtx_enter+0x4f sys/kern/kern_lock.c:266
#3 soreceive+0x5dc pru_lock sys/sys/protosw.h:288 [inline]
#3 soreceive+0x5dc sys/kern/uipc_socket.c:911
#4 recvit+0x31b sys/kern/uipc_syscalls.c:1082
#5 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
#6 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
#6 syscall+0x50f sys/arch/amd64/amd64/trap.c:606
#7 Xsyscall+0x128
Process 22761 (syz-executor3014581156) thread 0xffff80002a185d50 (198283)
exclusive rwlock solock r = 0 (0xfffffd806d86d218)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 soreceive+0xd05 pru_lock sys/sys/protosw.h:287 [inline]
#2 soreceive+0xd05 sys/kern/uipc_socket.c:1062
#3 recvit+0x31b sys/kern/uipc_syscalls.c:1082
#4 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
#5 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
#5 syscall+0x50f sys/arch/amd64/amd64/trap.c:606
#6 Xsyscall+0x128
shared rwlock netlock r = 0 (0xffffffff82c4a110)
#0 witness_lock+0x447
#1 solock_shared+0x68 sys/kern/uipc_socket2.c:370
#2 soreceive+0xd05 pru_lock sys/sys/protosw.h:287 [inline]
#2 soreceive+0xd05 sys/kern/uipc_socket.c:1062
#3 recvit+0x31b sys/kern/uipc_syscalls.c:1082
#4 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
#5 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
#5 syscall+0x50f sys/arch/amd64/amd64/trap.c:606
#6 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10165 6456K 6457K 166960K 11243 0
pcb 13 8K 8K 166960K 13 0
rtable 58 1K 2K 166960K 116 0
pf 15 6K 10K 166960K 26 0
ifaddr 13 9K 9K 166960K 13 0
ifgroup 22 1K 1K 166960K 22 0
counters 46 34K 34K 166960K 46 0
ioctlops 0 0K 4K 166960K 1475 0
iov 2 1K 1K 166960K 2 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1176 74K 74K 166960K 1192 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 67 91K 91K 166960K 302 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
in_multi 11 0K 0K 166960K 11 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 272 0
tdb 3 0K 0K 166960K 3 0
pagedep 1 8K 8K 166960K 1 0
inodedep 1 32K 32K 166960K 1 0
newblk 1 0K 0K 166960K 1 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 112 12K 12K 166960K 2561 0
UVM aobj 3 2K 2K 166960K 3 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 4 0K 0K 166960K 4 0
temp 1 5908K 5972K 166960K 3079 0
kqueue 11 16K 18K 166960K 24 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 21 0 18 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 144 35 0 20 1 0 1 1 0 8 0
syncache 312 5 0 5 1 0 1 1 0 8 1
tcpqe 32 127 0 127 1 0 1 1 0 8 1
tcpcb 808 8 0 5 1 0 1 1 0 8 0
arp 120 2 0 0 1 0 1 1 0 8 0
inpcb 368 36 0 28 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 9 0 0 1 0 1 1 0 8 0
pfstkey 128 9 0 0 1 0 1 1 0 8 0
pfstate 376 9 0 0 1 0 1 1 0 8 0
pfrule 1344 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 97 0 0 7 0 7 7 0 8 0
art_table 32 98 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 1433 0 38 88 0 88 88 0 8 0
ffsino 272 1433 0 38 93 0 93 93 0 8 0
nchpl 144 1619 0 49 59 0 59 59 0 8 0
uvmvnodes 80 1447 0 0 30 0 30 30 0 8 0
vnodes 216 1447 0 0 81 0 81 81 0 8 0
namei 1024 4579 0 4579 1 0 1 1 0 8 1
percpumem 16 36 0 0 1 0 1 1 0 8 0
kstatmem 264 8 0 0 1 0 1 1 0 8 0
scxspl 216 4853 0 4853 3 1 2 2 1 8 2
plimitpl 152 18 0 10 1 0 1 1 0 8 0
sigapl 424 341 0 308 5 1 4 5 0 8 0
futexpl 64 2 0 1 1 0 1 1 0 8 0
knotepl 120 43 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 320 95 0 92 1 0 1 1 0 8 0
fdescpl 496 323 0 308 3 0 3 3 0 8 0
filepl 152 1284 0 1224 3 0 3 3 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 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 104 71 0 59 1 0 1 1 0 8 0
zombiepl 144 308 0 308 1 0 1 1 0 8 1
processpl 1072 341 0 308 3 0 3 3 0 8 0
procpl 680 344 0 308 4 1 3 4 0 8 0
sockpl 488 92 0 66 4 0 4 4 0 8 0
mcl8k 8192 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 261 0 0 33 0 33 33 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 273 0 0 18 0 18 18 0 8 0
bufpl 288 2474 0 90 171 0 171 171 0 8 0
anonpl 24 203370 0 201278 25 1 24 25 0 186 11
amapchunkpl 152 9125 0 8939 8 0 8 8 0 158 0
amappl16 200 6222 0 6221 5 1 4 5 0 8 3
amappl15 192 10 0 10 1 1 0 1 0 8 0
amappl14 184 124 0 112 1 0 1 1 0 8 0
amappl13 176 9 0 9 1 1 0 1 0 8 0
amappl12 168 874 0 859 2 1 1 2 0 8 0
amappl11 160 60 0 46 1 0 1 1 0 8 0
amappl10 152 35 0 35 1 0 1 1 0 8 1
amappl9 144 162 0 162 1 0 1 1 0 8 1
amappl8 136 44 0 42 1 0 1 1 0 8 0
amappl7 128 115 0 102 1 0 1 1 0 8 0
amappl6 120 135 0 130 1 0 1 1 0 8 0
amappl5 112 105 0 94 1 0 1 1 0 8 0
amappl4 104 372 0 351 1 0 1 1 0 8 0
amappl3 96 2169 0 2125 3 1 2 2 0 8 0
amappl2 88 648 0 591 2 0 2 2 0 8 0
amappl1 80 9249 0 8776 12 0 12 12 0 8 0
amappl 88 2252 0 2187 2 0 2 2 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 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 72 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 323 0 308 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 323 0 308 1 0 1 1 0 8 0
vmmpekpl 168 7269 0 7251 1 0 1 1 0 8 0
vmmpepl 168 36582 0 35514 52 1 51 52 0 357 4
vmsppl 464 322 0 308 3 0 3 3 0 8 0
rwobjpl 56 20063 0 17896 33 1 32 33 0 8 1
pdppl 4096 654 0 616 54 16 38 46 0 8 0
pvpl 32 307417 0 302535 58 2 56 57 0 265 16
pmappl 248 322 0 308 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 481 0 19 14 0 14 14 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffffffff82bfaff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff82d3bba8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d3bba8) at __mp_lock+0x122 sys/kern/kern_lock.c:147
wakeup_n(fffffd806d86d320,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541
soreceive(fffffd806d86d200,ffff80002a230048,ffff80002a230008,0,0,ffff80002a2301cc,27bd27254a5463f2) at soreceive+0x1857 pru_unlock sys/sys/protosw.h:294 [inline]
soreceive(fffffd806d86d200,ffff80002a230048,ffff80002a230008,0,0,ffff80002a2301cc,27bd27254a5463f2) at soreceive+0x1857 sys/kern/uipc_socket.c:1194
recvit(ffff80002a185d50,5,ffff80002a2301a0,0,ffff80002a230198) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a185d50,ffff80002a2302a0,ffff80002a2302f0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a230370) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a230370) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd5742c15ea0, count: 5
ddb{0}> trace
x86_ipi_db(ffffffff82bfaff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff82d3bba8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d3bba8) at __mp_lock+0x122 sys/kern/kern_lock.c:147
wakeup_n(fffffd806d86d320,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541
soreceive(fffffd806d86d200,ffff80002a230048,ffff80002a230008,0,0,ffff80002a2301cc,27bd27254a5463f2) at soreceive+0x1857 pru_unlock sys/sys/protosw.h:294 [inline]
soreceive(fffffd806d86d200,ffff80002a230048,ffff80002a230008,0,0,ffff80002a2301cc,27bd27254a5463f2) at soreceive+0x1857 sys/kern/uipc_socket.c:1194
recvit(ffff80002a185d50,5,ffff80002a2301a0,0,ffff80002a230198) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a185d50,ffff80002a2302a0,ffff80002a2302f0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a230370) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a230370) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd5742c15ea0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x1c: addq $0x8,%rsp
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827c19a3) at panic+0x17b sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360
sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414
rwsleep(fffffd806d86d320,ffffffff82c4a100,118,ffffffff827afd95,0) at rwsleep+0xab sys/kern/kern_synch.c:300
sosleep_nsec(fffffd806d86d200,fffffd806d86d320,118,ffffffff827afd95,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468
sblock(fffffd806d86d200,fffffd806d86d2d0,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514
soreceive(fffffd806d86d200,ffff80002a236938,ffff80002a2368f8,0,0,ffff80002a236abc,27bd27254a5463f2) at soreceive+0x5fe sys/kern/uipc_socket.c:837
recvit(ffff80002a1ce550,5,ffff80002a236a90,0,ffff80002a236a88) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a1ce550,ffff80002a236b90,ffff80002a236be0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a236c60) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a236c60) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd56cdc45b40, count: 2
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827c19a3) at panic+0x17b sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360
sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414
rwsleep(fffffd806d86d320,ffffffff82c4a100,118,ffffffff827afd95,0) at rwsleep+0xab sys/kern/kern_synch.c:300
sosleep_nsec(fffffd806d86d200,fffffd806d86d320,118,ffffffff827afd95,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468
sblock(fffffd806d86d200,fffffd806d86d2d0,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514
soreceive(fffffd806d86d200,ffff80002a236938,ffff80002a2368f8,0,0,ffff80002a236abc,27bd27254a5463f2) at soreceive+0x5fe sys/kern/uipc_socket.c:837
recvit(ffff80002a1ce550,5,ffff80002a236a90,0,ffff80002a236a88) at recvit+0x31b sys/kern/uipc_syscalls.c:1082
sys_recvmmsg(ffff80002a1ce550,ffff80002a236b90,ffff80002a236be0) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973
syscall(ffff80002a236c60) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline]
syscall(ffff80002a236c60) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd56cdc45b40, count: -13
ddb{1}>