witness: lock order reversal:
1st 0xffff800010fddc70 sbufsnd (&so->so_snd.sb_lock)
2nd 0xfffffd806c23a1f0 inode (&ip->i_lock)
lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock)
lock order data 0xffffffff834ac815 -> 0xffffffff83425b61 is missing
lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock)
#0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
#1 sblock+0xb6 sys/kern/uipc_socket2.c:536
#2 soreceive+0x27d sys/kern/uipc_socket.c:890
#3 fifo_read+0x117 sys/miscfs/fifofs/fifo_vnops.c:264
#4 VOP_READ+0x101 sys/kern/vfs_vops.c:227
#5 vn_rdwr+0x15b sys/kern/vfs_vnops.c:-1
#6 vndsetcred+0xa1 sys/dev/vnd.c:685
#7 vndioctl+0xdfc sys/dev/vnd.c:486
#8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#9 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#10 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock)
#0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
#1 sblock+0xb6 sys/kern/uipc_socket2.c:536
#2 sosplice+0x312 sys/kern/uipc_socket.c:1347
#3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1226
#4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#5 Xsyscall+0x128
Stopped at db_enter+0x25: addq $0x8,%rsp
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806c23a1f0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806c23a1d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806c23a1d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805e7297f0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805e7297f0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576
vget(fffffd805e7297f0,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686
ktrwriteraw(ffff800039bc9778,fffffd805e7297f0,fffffd80097fd208,ffff80003c3f5770,ffff80003c3f5750) at ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688
ktrnamei(ffff800039bc9778,ffff80002a233000) at ktrnamei+0x145 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrnamei(ffff800039bc9778,ffff80002a233000) at ktrnamei+0x145 sys/kern/kern_ktrace.c:222
namei(ffff80003c3f58c0) at namei+0x29e sys/kern/vfs_lookup.c:170
unp_connect(ffff800010fdda88,fffffd806c542700,ffff800039bc9778) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800010fdda88,fffffd806aa00600,fffffd806c542700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff800010fdda88,fffffd806c542700,ffff80003c3f5b48,0,0,402) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff800039bc9778,6,ffff80003c3f5cc0,402,ffff80003c3f5cf8) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmmsg(ffff800039bc9778,ffff80003c3f5e70,ffff80003c3f5dc0) at sys_sendmmsg+0x3f3 sys/kern/uipc_syscalls.c:676
syscall(ffff80003c3f5e70) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3f5e70) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x725f6f8cca0, count: -17
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80003c3f53d0
rbx 0
rdx 0
rcx 0xffff800039bc9778
rax 0xffff8000299bdff0
r8 0xffff80003c3f52b0
r9 0x8080808080808080
r10 0xd71248136301e124
r11 0x810fb47cd856287
r12 0xfffffd800403e8c0
r13 0xfffffd8004825e88
r14 0x3
r15 0xffffffff834b960d substchar+0x6684
rip 0xffffffff82a61865 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003c3f53c0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=167059 pid=55042 tcnt=3 stat=onproc
flags process=0 proc=4000001<INKTR,THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000fffefa08,0xffff800039bc8030
process=0xffff8000fffdf9e8 user=0xffff80003c3f0000, vmspace=0xfffffd806c6fd5d0
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
97747 441977 63116 0 7 0 syz-executor
77020 251307 75771 0 3 0x80 nanoslp syz-executor
77020 44769 75771 0 3 0x4000080 fsleep syz-executor
77020 339968 75771 0 3 0x4000080 fsleep syz-executor
77020 204506 75771 0 3 0x4000080 fsleep syz-executor
55042 337925 5944 0 2 0 syz-executor
*55042 167059 5944 0 7 0x4000001 syz-executor
55042 242133 5944 0 3 0x4000080 fsleep syz-executor
20008 65227 33140 0 2 0 syz-executor
20008 148442 33140 0 3 0x4000000 biowait syz-executor
20008 81185 33140 0 2 0x4000000 syz-executor
83719 4974 86462 0 2 0x100002 sh
86462 299049 366 0 3 0x82 wait syz-executor
11615 463048 0 0 3 0x14280 nfsidl nfsio
6209 215203 0 0 3 0x14280 nfsidl nfsio
97439 149672 0 0 3 0x14280 nfsidl nfsio
68962 388074 0 0 3 0x14280 nfsidl nfsio
16239 78507 0 0 3 0x14280 nfsidl nfsio
2733 197552 0 0 3 0x14280 nfsidl nfsio
29321 89969 0 0 3 0x14280 nfsidl nfsio
78965 121649 0 0 3 0x14280 nfsidl nfsio
11349 177265 0 0 3 0x14280 nfsidl nfsio
90925 303599 0 0 3 0x14280 nfsidl nfsio
69656 142092 0 0 3 0x14280 nfsidl nfsio
91042 206197 0 0 3 0x14280 nfsidl nfsio
97216 505581 0 0 3 0x14280 nfsidl nfsio
90708 114129 0 0 3 0x14280 nfsidl nfsio
60378 60161 0 0 3 0x14280 nfsidl nfsio
226 240795 0 0 3 0x14280 nfsidl nfsio
13965 316966 0 0 3 0x14280 nfsidl nfsio
67244 349498 0 0 3 0x14280 nfsidl nfsio
11226 501749 0 0 3 0x14280 nfsidl nfsio
67245 10840 0 0 3 0x14280 nfsidl nfsio
6718 509248 0 0 3 0x14200 acct acct
36437 354237 5160 0 3 0x100082 sbwait ndp
5160 284871 26577 0 3 0x10008a sigsusp sh
5944 68851 366 0 3 0x82 nanoslp syz-executor
33140 402493 366 0 3 0x82 nanoslp syz-executor
86817 403023 366 0 3 0x82 piperd syz-executor
43326 187446 366 0 3 0x82 piperd syz-executor
26577 273552 366 0 3 0x82 wait syz-executor
63116 215497 366 0 3 0x82 nanoslp syz-executor
75771 158604 366 0 3 0x82 nanoslp syz-executor
366 155416 75909 0 2 0x2 syz-executor
75909 210403 62858 0 3 0x10008a sigsusp ksh
62858 49631 91985 0 3 0x98 kqread sshd-session
91985 221379 18561 0 3 0x92 kqread sshd-session
85296 51408 1 0 3 0x100083 ttyopn getty
18561 184373 1 0 3 0x88 kqread sshd
77452 234663 2410 74 3 0x1100092 bpf pflogd
2410 25611 1 0 3 0x80 sbwait pflogd
73433 452285 91887 73 3 0x1100090 kqread syslogd
91887 249357 1 0 3 0x100082 sbwait syslogd
50023 228426 1 0 3 0x100080 kqread resolvd
33000 129453 32289 77 3 0x100092 kqread dhcpleased
40870 431740 32289 77 3 0x100092 kqread dhcpleased
32289 91158 1 0 3 0x80 kqread dhcpleased
68856 149890 0 0 3 0x14200 bored smr
96761 142490 0 0 2 0x14200 zerothread
65834 517844 0 0 3 0x14200 aiodoned aiodoned
82742 377602 0 0 3 0x14200 syncer update
18697 225673 0 0 3 0x14200 cleaner cleaner
80216 442738 0 0 3 0x14200 reaper reaper
41437 33034 0 0 3 0x14200 pgdaemon pagedaemon
74726 162862 0 0 3 0x14200 bored viomb
21450 304208 0 0 3 0x40014200 acpi0 acpi0
75932 52057 0 0 3 0x40014200 idle1
82035 382178 0 0 3 0x14200 bored softnet1
68198 330164 0 0 2 0x14200 softnet0
78632 29952 0 0 3 0x14200 bored systqmp
66579 286505 0 0 3 0x14200 bored systq
28595 242254 0 0 3 0x14200 tmoslp softclockmp
65260 360508 0 0 3 0x40014200 tmoslp softclock
51241 203184 0 0 3 0x40014200 idle0
1 368499 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 55042 (syz-executor) thread 0xffff800039bc9778 (167059)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff83a81100)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 unp_connect+0x28c sys/kern/uipc_usrreq.c:872
#2 uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
#3 sosend+0x804 sys/kern/uipc_socket.c:-1
#4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785
#5 sys_sendmmsg+0x3f3 sys/kern/uipc_syscalls.c:676
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
exclusive rwlock sbufsnd r = 0 (0xffff800010fddc70)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 sblock+0xb6 sys/kern/uipc_socket2.c:536
#3 sosend+0x2e9 sys/kern/uipc_socket.c:639
#4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785
#5 sys_sendmmsg+0x3f3 sys/kern/uipc_syscalls.c:676
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
Process 20008 (syz-executor) thread 0xffff800039bc9ca8 (148442)
exclusive rrwlock inode r = 0 (0xfffffd806e564ee8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vn_write+0x18f sys/kern/vfs_vnops.c:411
#6 dofilewritev+0x2bd sys/kern/sys_generic.c:384
#7 sys_write+0xa2 sys/kern/sys_generic.c:300
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11073 12172K 13029K 166960K 12968 0
pcb 17 14K 15K 166960K 165 0
rtable 205 7K 8K 166960K 578 0
pf 35 17K 22K 166960K 117 0
ifaddr 39 7K 8K 166960K 93 0
ifgroup 51 2K 2K 166960K 144 0
sysctl 4 1K 9K 166960K 16 0
counters 68 36K 37K 166960K 148 0
ioctlops 0 0K 4K 166960K 1626 0
iov 0 0K 16K 166960K 153 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1447 91K 91K 166960K 2083 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 6 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 127 0
dirhash 12 2K 2K 166960K 27 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 93K 166960K 742 0
sigio 0 0K 0K 166960K 42 0
proc 72 115K 180K 166960K 680 0
subproc 72 4K 4K 166960K 109 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 48 0
in_multi 88 6K 7K 166960K 152 0
ether_multi 1 0K 0K 166960K 7 0
mrt 1 0K 0K 166960K 26 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 97 440K 440K 166960K 97 0
exec 0 0K 1K 166960K 472 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 237 163K 188K 166960K 8368 0
UVM aobj 19 2K 4K 166960K 23 0
pinsyscall 43 86K 104K 166960K 1982 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 33 0
NDP 11 0K 2K 166960K 60 0
temp 80 9088K 9156K 166960K 27761 0
kqueue 13 20K 31K 166960K 157 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 26 0 0 1 0 1 1 0 8 0
rtpcb 120 79 0 75 1 0 1 1 0 8 0
rtentry 176 162 0 74 6 0 6 6 0 8 0
unpcb 144 509 0 453 6 2 4 4 0 8 1
syncache 336 7 0 6 3 2 1 1 0 8 0
tcpqe 32 2 0 2 1 1 0 1 0 8 0
tcpcb 736 129 0 122 1 0 1 1 0 8 0
arp 136 27 0 11 1 0 1 1 0 8 0
inpcb 328 630 0 620 10 3 7 7 0 8 5
nd6 152 34 0 12 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 0 1 1 0 8 1
kcovpl 48 12 0 4 1 0 1 1 0 8 0
mppekey 1024 1 0 1 1 0 1 1 0 8 1
ppxss 1192 25 0 25 1 0 1 1 0 8 1
pppxif 1576 8 0 8 2 1 1 1 0 8 1
pfstscr 40 2 0 0 1 0 1 1 0 8 0
pffrag 232 5 0 0 1 0 1 1 0 482 0
pffrnode 88 5 0 0 1 0 1 1 0 8 0
pffrent 40 6 0 1 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
pfanchor 1288 1 0 0 1 0 1 1 0 8 0
pfstitem 24 63 0 16 1 0 1 1 0 8 0
pfstkey 128 63 0 16 2 0 2 2 0 8 0
pfstate 448 62 0 16 6 0 6 6 0 8 0
pfrule 1360 25 0 18 2 1 1 2 0 8 0
rttmr 136 1 0 1 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 715 0 299 33 1 32 32 0 8 4
art_table 40 716 0 299 6 0 6 6 0 8 1
art_node 32 162 0 83 1 0 1 1 0 8 0
sysvmsgpl 40 39 0 2 1 0 1 1 0 8 0
semapl 112 125 0 115 1 0 1 1 0 8 0
shmpl 112 20 0 4 1 0 1 1 0 8 0
dirhash 1024 27 0 10 3 0 3 3 0 8 0
dino2pl 256 2703 0 1233 92 0 92 92 0 8 0
ffsino 296 2703 0 1233 114 0 114 114 0 8 0
nchpl 144 3639 0 1923 64 0 64 64 0 8 0
rtmask 32 3 0 3 1 1 0 1 0 8 0
vnodes 216 3254 0 0 181 0 181 181 0 8 0
namei 1024 11901 0 11900 1 0 1 1 0 8 0
percpumem 16 89 0 40 1 0 1 1 0 8 0
kstatmem 264 79 0 54 3 1 2 3 0 8 0
scsiplug 72 3 0 3 2 2 0 1 0 8 0
scxspl 216 14114 0 14113 11 3 8 8 1 8 7
plimitpl 152 200 0 183 1 0 1 1 0 8 0
sigapl 424 1072 0 1004 9 1 8 8 0 8 0
knotepl 120 567 0 0 18 0 18 18 0 8 0
kqueuepl 224 238 0 229 4 1 3 3 0 8 2
pipepl 344 231 0 204 9 4 5 9 0 8 2
fdescpl 528 1035 0 1004 3 0 3 3 0 8 0
filepl 160 5497 0 5246 23 8 15 21 0 8 4
lockfpl 104 309 0 307 2 1 1 2 0 8 0
lockfspl 48 114 0 112 1 0 1 1 0 8 0
sessionpl 144 53 0 44 1 0 1 1 0 8 0
pgrppl 48 70 0 53 1 0 1 1 0 8 0
ucredpl 104 790 0 777 1 0 1 1 0 8 0
zombiepl 144 1004 0 1004 1 0 1 1 0 8 1
processpl 1232 1072 0 1004 6 0 6 6 0 8 0
procpl 664 1988 0 1913 8 0 8 8 0 8 1
sosppl 176 3 0 3 2 2 0 1 0 8 0
sockpl 752 1241 0 1171 16 5 11 11 0 8 4
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 6 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl9k128 9344 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 126 0 0 16 0 16 16 0 8 0
mcl2k 2048 30 0 0 4 0 4 4 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 367 0 0 23 0 23 23 0 8 0
bufpl 280 4811 0 110 336 0 336 336 0 8 0
anonpl 32 7929 0 0 64 0 64 64 0 246 0
amapchunkpl 152 26884 0 26397 37 5 32 32 0 158 12
amappl16 200 2878 0 2840 23 8 15 15 0 8 12
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 468 0 465 1 0 1 1 0 8 0
amappl13 176 135 0 122 1 0 1 1 0 8 0
amappl12 168 1304 0 1274 2 0 2 2 0 8 0
amappl11 160 33 0 33 1 1 0 1 0 8 0
amappl10 152 64 0 50 1 0 1 1 0 8 0
amappl9 144 261 0 261 1 1 0 1 0 8 0
amappl8 136 115 0 112 1 0 1 1 0 8 0
amappl7 128 166 0 152 1 0 1 1 0 8 0
amappl6 120 200 0 197 1 0 1 1 0 8 0
amappl5 112 114 0 103 1 0 1 1 0 8 0
amappl4 104 309 0 288 1 0 1 1 0 8 0
amappl3 96 5373 0 5267 4 0 4 4 0 8 0
amappl2 88 586 0 521 2 0 2 2 0 8 0
amappl1 80 12817 0 12200 18 4 14 17 0 8 0
amappl 88 7494 0 7336 5 0 5 5 0 92 0
uvmvnodes 80 128 0 0 3 0 3 3 0 8 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 22 0 4 1 0 1 1 0 8 0
uaddrrnd 24 1035 0 1004 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1035 0 1004 1 0 1 1 0 8 0
vmmpekpl 168 10160 0 10120 3 0 3 3 0 8 0
vmmpepl 168 72449 0 70579 104 4 100 100 0 357 11
vmsppl 488 1034 0 1004 5 0 5 5 0 8 0
rwobjpl 80 21921 0 20792 30 1 29 29 0 8 2
pdppl 4096 2077 0 2008 117 44 73 85 0 8 4
pvpl 32 15785 0 0 128 0 128 128 0 265 0
pmappl 256 1034 0 1004 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 312 0 50 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff8389dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80003c4acb00,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80003c4acc60,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a80900) at __mp_lock+0x192 sys/kern/kern_lock.c:173
syscall(ffff80003c4ace30) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80003c4ace30) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x711fba2209c0, count: -12
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806c23a1f0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806c23a1d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806c23a1d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805e7297f0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805e7297f0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576
vget(fffffd805e7297f0,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686
ktrwriteraw(ffff800039bc9778,fffffd805e7297f0,fffffd80097fd208,ffff80003c3f5770,ffff80003c3f5750) at ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688
ktrnamei(ffff800039bc9778,ffff80002a233000) at ktrnamei+0x145 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrnamei(ffff800039bc9778,ffff80002a233000) at ktrnamei+0x145 sys/kern/kern_ktrace.c:222
namei(ffff80003c3f58c0) at namei+0x29e sys/kern/vfs_lookup.c:170
unp_connect(ffff800010fdda88,fffffd806c542700,ffff800039bc9778) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800010fdda88,fffffd806aa00600,fffffd806c542700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff800010fdda88,fffffd806c542700,ffff80003c3f5b48,0,0,402) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff800039bc9778,6,ffff80003c3f5cc0,402,ffff80003c3f5cf8) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmmsg(ffff800039bc9778,ffff80003c3f5e70,ffff80003c3f5dc0) at sys_sendmmsg+0x3f3 sys/kern/uipc_syscalls.c:676
syscall(ffff80003c3f5e70) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3f5e70) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x725f6f8cca0, count: -17