witness: lock order reversal:
1st 0xffff800001230b68 sbufrcv (&so->so_rcv.sb_lock)
2nd 0xfffffd8060c9fb38 inode (&ip->i_lock)
lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock)
lock order data 0xffffffff830e7631 -> 0xffffffff8305f254 is missing
lock order [2] inode (&ip->i_lock) -> [1] sbufrcv (&so->so_rcv.sb_lock)
#0 rw_enter+0x122
#1 sblock+0xb7 sys/kern/uipc_socket2.c:549
#2 soreceive+0x295 sys/kern/uipc_socket.c:947
#3 fifo_read+0x11a sys/miscfs/fifofs/fifo_vnops.c:264
#4 VOP_READ+0x102 sys/kern/vfs_vops.c:227
#5 vn_rdwr+0x15b
#6 vndsetcred+0xa1 sys/dev/vnd.c:684
#7 vndioctl+0xe6c sys/dev/vnd.c:485
#8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#9 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525
#10 sys_ioctl+0x67c
#11 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#11 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#12 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:437
witness_checkorder(fffffd8060c9fb38,9,0) at witness_checkorder+0x1024
rw_enter(fffffd8060c9fb28,1) at rw_enter+0x122
rrw_enter(fffffd8060c9fb28,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd807454e8a0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd807454e8a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_getcwd_common(fffffd807454e8a0,fffffd807454e8a0,0,0,200,0,686ce9c9cffadd82) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd807454e8a0,fffffd807454e8a0,ffff8000371bf470) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688
unp_externalize(fffffd806aea3700,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094
soreceive(ffff800001230a98,ffff80002a124798,ffff80002a124748,0,ffff80002a124788,ffff80002a12490c,353778530dfb9d42) at soreceive+0xd3e sys/kern/uipc_socket.c:1092
recvit(ffff8000371bf470,8,ffff80002a1248e0,0,ffff80002a124990) at recvit+0x40a sys/kern/uipc_syscalls.c:1082
sys_recvmsg(ffff8000371bf470,ffff80002a124a40,ffff80002a124990) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882
syscall(ffff80002a124a40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a124a40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb603d9820d0, count: -14
ddb{1}> show registers
rdi 0
rsi 0x40000 acpi_pdirpa+0x2be71
rbp 0xffff80002a1241f0
rbx 0xffffffff8306f162 pp_r600_decoded_lanes+0x31454
rdx 0xffff8000011b3d00
rcx 0xffff8000371bf470
rax 0x3ffff acpi_pdirpa+0x2be70
r8 0xffff80002a1240d0
r9 0x8080808080808080
r10 0x882e0ab4947b4156
r11 0xefb5f7e1637e3474
r12 0xfffffd80042b4ad0
r13 0xfffffd8003acce00
r14 0x3
r15 0xffffffff
rip 0xffffffff812a47a5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a1241e0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=158378 pid=67324 tcnt=3 stat=onproc
flags process=1000000<CHROOT> proc=4000000<THREAD>
runpri=24, usrpri=50, slppri=24, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffff4f58,0xffff80002a0bb208
process=0xffff80002a0bdfc0 user=0xffff80002a11f000, vmspace=0xfffffd806be93c08
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
12384 212504 23001 0 2 0 syz-executor
3966 80657 83099 0 2 0 syz-executor
3966 198516 83099 0 3 0x4000080 fsleep syz-executor
3966 449715 83099 0 2 0x4000000 syz-executor
53155 393995 11668 0 7 0 syz-executor
53155 209444 11668 0 2 0x4000000 syz-executor
52951 124068 12562 0 2 0 syz-executor
35347 300321 54565 0 2 0 syz-executor
35347 176403 54565 0 3 0x4000080 fsleep syz-executor
35347 99639 54565 0 3 0x4000080 fsleep syz-executor
35347 190320 54565 0 3 0x4000080 fsleep syz-executor
79912 261908 7360 0 2 0 syz-executor
79912 390675 7360 0 3 0x4000080 fsleep syz-executor
79912 353524 7360 0 2 0x4000000 syz-executor
79912 35233 7360 0 3 0x4000080 fsleep syz-executor
79912 119251 7360 0 3 0x4000080 fsleep syz-executor
67324 427433 39247 0 2 0x1000000 syz-executor
*67324 158378 39247 0 7 0x5000000 syz-executor
67324 446402 39247 0 2 0x5000000 syz-executor
54565 141864 60107 0 3 0x82 nanoslp syz-executor
23001 56705 60107 0 3 0x82 nanoslp syz-executor
11668 176735 60107 0 3 0x82 nanoslp syz-executor
7360 28447 60107 0 3 0x82 nanoslp syz-executor
96658 190286 60107 0 3 0x82 nanoslp syz-executor
83099 119863 60107 0 3 0x82 nanoslp syz-executor
39247 186372 60107 0 3 0x82 nanoslp syz-executor
12562 59514 60107 0 3 0x82 nanoslp syz-executor
11861 473275 0 0 3 0x14200 acct acct
36898 505477 1 0 3 0x100083 ttyin getty
56348 417041 0 0 3 0x14280 nfsidl nfsio
1412 389454 0 0 3 0x14280 nfsidl nfsio
64302 264536 0 0 3 0x14280 nfsidl nfsio
22163 501257 0 0 3 0x14280 nfsidl nfsio
79802 15407 0 0 3 0x14280 nfsidl nfsio
21256 440950 0 0 3 0x14280 nfsidl nfsio
91870 250341 0 0 3 0x14280 nfsidl nfsio
14315 422371 0 0 3 0x14280 nfsidl nfsio
78239 252294 0 0 3 0x14280 nfsidl nfsio
30310 56041 0 0 3 0x14280 nfsidl nfsio
77337 322891 0 0 3 0x14280 nfsidl nfsio
91299 349128 0 0 3 0x14280 nfsidl nfsio
48577 394076 0 0 3 0x14280 nfsidl nfsio
11597 164266 0 0 3 0x14280 nfsidl nfsio
35755 93654 0 0 3 0x14280 nfsidl nfsio
89973 244845 0 0 3 0x14280 nfsidl nfsio
51446 430225 0 0 3 0x14280 nfsidl nfsio
13909 506898 0 0 3 0x14280 nfsidl nfsio
53697 82511 0 0 3 0x14280 nfsidl nfsio
11822 177878 0 0 3 0x14280 nfsidl nfsio
44429 173986 0 0 3 0x14200 bored sosplice
60107 108506 57652 0 3 0x82 kqread syz-executor
57652 81061 48502 0 3 0x10008a sigsusp ksh
48502 290600 41998 0 3 0x98 kqread sshd-session
41998 422356 80548 0 3 0x92 kqread sshd-session
80548 84256 1 0 3 0x88 kqread sshd
84154 372639 55971 74 3 0x1100092 bpf pflogd
55971 255025 1 0 3 0x80 sbwait pflogd
10576 428234 10807 73 2 0x1100010 syslogd
10807 485007 1 0 3 0x100082 sbwait syslogd
96533 66929 1 0 3 0x100080 kqread resolvd
15706 407661 56137 77 3 0x100092 kqread dhcpleased
55640 401717 56137 77 3 0x100092 kqread dhcpleased
56137 271284 1 0 3 0x80 kqread dhcpleased
25657 356590 0 0 3 0x14200 bored smr
62445 23658 0 0 2 0x14200 zerothread
3087 187516 0 0 3 0x14200 aiodoned aiodoned
72585 190538 0 0 3 0x14200 syncer update
86894 485268 0 0 3 0x14200 cleaner cleaner
26683 162627 0 0 3 0x14200 reaper reaper
32072 475888 0 0 3 0x14200 pgdaemon pagedaemon
78555 294827 0 0 3 0x14200 bored viomb
69180 246713 0 0 3 0x40014200 acpi0 acpi0
63304 207697 0 0 3 0x40014200 idle1
97088 406182 0 0 3 0x14200 bored softnet3
11492 144588 0 0 3 0x14200 bored softnet2
67514 15892 0 0 3 0x14200 bored softnet1
71489 172209 0 0 3 0x14200 bored softnet0
60898 46561 0 0 3 0x14200 bored systqmp
86859 82070 0 0 3 0x14200 bored systq
922 232841 0 0 3 0x14200 tmoslp softclockmp
33242 31780 0 0 3 0x40014200 tmoslp softclock
26869 151407 0 0 3 0x40014200 idle0
1 64444 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 67324 (syz-executor) thread 0xffff8000371bf470 (158378)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835dd500)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 unp_externalize+0x14e
#2 soreceive+0xd3e sys/kern/uipc_socket.c:1092
#3 recvit+0x40a sys/kern/uipc_syscalls.c:1082
#4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882
#5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#6 Xsyscall+0x128
exclusive rwlock sbufrcv r = 0 (0xffff800001230b68)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 sblock+0xb7 sys/kern/uipc_socket2.c:549
#3 soreceive+0x295 sys/kern/uipc_socket.c:947
#4 recvit+0x40a sys/kern/uipc_syscalls.c:1082
#5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882
#6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#7 Xsyscall+0x128
Process 10576 (syslogd) thread 0xffff8000ffffdbe8 (428234)
exclusive rrwlock inode r = 0 (0xfffffd806e4a00a0)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926
#6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10219 10242K 10498K 166960K 12719 0
pcb 48 16K 17K 166960K 392 0
rtable 224 9K 9K 166960K 1922 0
pf 37 18K 26K 166960K 167 0
ifaddr 44 8K 8K 166960K 227 0
ifgroup 59 2K 2K 166960K 256 0
sysctl 3 0K 0K 166960K 5 0
counters 66 36K 36K 166960K 170 0
ioctlops 0 0K 4K 166960K 1598 0
iov 0 0K 16K 166960K 46 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1483 93K 94K 166960K 2818 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 10 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 33 0
dirhash 12 2K 2K 166960K 42 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 18 65K 93K 166960K 1643 0
sigio 0 0K 0K 166960K 48 0
proc 70 91K 140K 166960K 1702 0
subproc 104 6K 6K 166960K 611 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 110 0
in_multi 99 7K 7K 166960K 553 0
ether_multi 1 0K 0K 166960K 3 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 115 519K 519K 166960K 115 0
exec 0 0K 1K 166960K 1064 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 241 77K 109K 166960K 14468 0
UVM aobj 24 6K 6K 166960K 25 0
pinsyscall 43 86K 104K 166960K 3744 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 63 0
NDP 14 0K 2K 166960K 160 0
temp 76 6824K 6952K 166960K 46093 0
kqueue 13 20K 30K 166960K 170 0
SYN cache 2 8K 16K 166960K 3 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 202 0 199 2 1 1 2 0 8 0
rtentry 112 642 0 543 4 1 3 4 0 8 0
unpcb 144 1325 0 1304 20 19 1 6 0 8 0
syncache 336 7 0 7 3 3 0 1 0 8 0
tcpqe 32 1 0 1 1 1 0 1 0 8 0
tcpcb 808 654 0 649 22 21 1 8 0 8 0
arp 120 100 0 82 1 0 1 1 0 8 0
inpcb 336 1972 0 1931 28 24 4 12 0 8 0
nd6 136 158 0 134 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 1 0 1 0 8 0
kcovpl 48 47 0 39 1 0 1 1 0 8 0
ppxss 1168 9 0 9 5 4 1 1 0 8 1
pffrag 232 6 0 3 1 0 1 1 0 482 0
pffrnode 88 6 0 3 1 0 1 1 0 8 0
pffrent 40 14 0 10 2 1 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 24 131 0 87 1 0 1 1 0 8 0
pfstkey 128 131 0 87 2 0 2 2 0 8 0
pfstate 376 131 0 87 6 0 6 6 0 8 0
pfrule 1344 22 0 17 2 1 1 2 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 2731 0 2277 42 13 29 34 0 8 0
art_table 32 2733 0 2277 5 0 5 5 0 8 0
art_node 16 638 0 549 1 0 1 1 0 8 0
sysvmsgpl 40 5 0 0 1 0 1 1 0 8 0
semapl 112 31 0 21 1 0 1 1 0 8 0
shmpl 112 22 0 1 1 0 1 1 0 8 0
dirhash 1024 37 0 20 3 0 3 3 0 8 0
dino2pl 256 3416 0 1839 99 0 99 99 0 8 0
ffsino 272 3416 0 1839 106 0 106 106 0 8 0
nchpl 144 4971 0 3238 65 0 65 65 0 8 0
uvmvnodes 80 4583 0 0 94 0 94 94 0 8 0
vnodes 216 4583 0 0 255 0 255 255 0 8 0
namei 1024 20697 0 20697 6 5 1 2 0 8 1
percpumem 16 99 0 52 1 0 1 1 0 8 0
kstatmem 264 130 0 104 2 0 2 2 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 2 0 2 2 2 0 1 0 8 0
scxspl 216 29776 0 29776 18 17 1 8 1 8 1
plimitpl 152 184 0 166 1 0 1 1 0 8 0
sigapl 424 1889 0 1817 11 2 9 9 0 8 0
futexpl 64 14376 0 14369 6 5 1 1 0 8 0
knotepl 120 640 0 0 17 0 17 17 0 8 0
kqueuepl 216 365 0 356 7 6 1 5 0 8 0
pipepl 320 509 0 482 17 14 3 8 0 8 0
fdescpl 496 1849 0 1817 5 0 5 5 0 8 0
filepl 152 11531 0 11250 47 31 16 21 0 8 3
lockfpl 104 778 0 776 4 3 1 2 0 8 0
lockfspl 48 231 0 229 1 0 1 1 0 8 0
sessionpl 144 65 0 56 1 0 1 1 0 8 0
pgrppl 48 141 0 124 1 0 1 1 0 8 0
ucredpl 104 1446 0 1432 1 0 1 1 0 8 0
zombiepl 144 1818 0 1817 2 1 1 1 0 8 0
processpl 1160 1889 0 1817 7 1 6 6 0 8 0
procpl 648 3448 0 3364 9 1 8 8 0 8 0
srpgc 96 10 0 10 4 4 0 1 0 8 0
sosppl 168 3 0 3 3 3 0 1 0 8 0
sockpl 664 3510 0 3445 53 46 7 14 0 8 1
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 254 0 0 32 0 32 32 0 8 0
mtagpl 96 10 0 0 1 0 1 1 0 8 0
mbufpl 256 1135 0 0 68 0 68 68 0 8 0
bufpl 280 8935 0 1993 496 0 496 496 0 8 0
anonpl 24 317251 0 313804 114 63 51 81 0 185 19
amapchunkpl 152 47068 0 46557 60 28 32 42 0 158 11
amappl16 200 6462 0 6444 30 24 6 14 0 8 5
amappl15 192 16 0 16 3 3 0 1 0 8 0
amappl14 184 231 0 219 1 0 1 1 0 8 0
amappl13 176 13 0 13 1 1 0 1 0 8 0
amappl12 168 3139 0 3109 4 2 2 3 0 8 0
amappl11 160 63 0 48 1 0 1 1 0 8 0
amappl10 152 20 0 18 1 0 1 1 0 8 0
amappl9 144 121 0 121 1 1 0 1 0 8 0
amappl8 136 29 0 26 1 0 1 1 0 8 0
amappl7 128 190 0 178 1 0 1 1 0 8 0
amappl6 120 566 0 564 1 0 1 1 0 8 0
amappl5 112 295 0 283 1 0 1 1 0 8 0
amappl4 104 448 0 427 1 0 1 1 0 8 0
amappl3 96 8336 0 8233 3 0 3 3 0 8 0
amappl2 88 2163 0 2084 2 0 2 2 0 8 0
amappl1 80 15213 0 14628 15 0 15 15 0 8 0
amappl 88 13711 0 13533 5 0 5 5 0 92 0
dma4096 4096 2 0 2 2 2 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 7 0 7 2 2 0 1 0 8 0
dma128 128 254 0 254 2 2 0 1 0 8 0
dma64 64 7 0 7 2 2 0 1 0 8 0
dma32 32 8 0 8 2 2 0 1 0 8 0
dma16 16 19 0 18 1 0 1 1 0 8 0
aobjpl 72 24 0 1 1 0 1 1 0 8 0
uaddrrnd 24 1849 0 1817 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1849 0 1817 1 0 1 1 0 8 0
vmmpekpl 168 17338 0 17283 4 0 4 4 0 8 0
vmmpepl 168 119755 0 117829 112 21 91 96 0 357 5
vmsppl 440 1848 0 1817 6 2 4 5 0 8 0
rwobjpl 56 39995 0 34432 79 0 79 79 0 8 0
pdppl 4096 3705 0 3634 162 89 73 87 0 8 2
pvpl 32 45305 0 0 366 0 366 366 0 265 0
pmappl 248 1848 0 1817 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 587 0 163 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff83472ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835dd2f8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835dd2f8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
intr_handler(ffff800032254fc0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835dd2f8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835dd2f8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
intr_handler(ffff800032255130,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553
Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:154
softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7818682605f0, count: -14
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:437
witness_checkorder(fffffd8060c9fb38,9,0) at witness_checkorder+0x1024
rw_enter(fffffd8060c9fb28,1) at rw_enter+0x122
rrw_enter(fffffd8060c9fb28,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd807454e8a0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd807454e8a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_getcwd_common(fffffd807454e8a0,fffffd807454e8a0,0,0,200,0,686ce9c9cffadd82) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd807454e8a0,fffffd807454e8a0,ffff8000371bf470) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688
unp_externalize(fffffd806aea3700,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094
soreceive(ffff800001230a98,ffff80002a124798,ffff80002a124748,0,ffff80002a124788,ffff80002a12490c,353778530dfb9d42) at soreceive+0xd3e sys/kern/uipc_socket.c:1092
recvit(ffff8000371bf470,8,ffff80002a1248e0,0,ffff80002a124990) at recvit+0x40a sys/kern/uipc_syscalls.c:1082
sys_recvmsg(ffff8000371bf470,ffff80002a124a40,ffff80002a124990) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882
syscall(ffff80002a124a40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a124a40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb603d9820d0, count: -14