panic: vrele: ref cnt
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
161865 91813 0 0 0 1 syz-executor
*437805 76932 0 0x500000 0x4000000 0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: vrele: ref cnt
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, count: -7
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000371b7c40
rbx 0xffffffff834d5d87 cpu_info_full_primary+0x2d87
rdx 0
rcx 0xffff80002fd787c8
rax 0xffffffff834d4ff0 cpu_info_full_primary+0x1ff0
r8 0
r9 0x8080808080808080
r10 0xe2fee97d19afeec5
r11 0xcb061d9c4ff14597
r12 0xffffffff834d5b88 cpu_info_full_primary+0x2b88
r13 0
r14 0
r15 0x1
rip 0xffffffff817459e5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff8000371b7c30
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=437805 pid=76932 tcnt=4 stat=onproc
flags process=500000<PLEDGE,EXECPLEDGE> proc=4000000<THREAD>
runpri=86, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffff6530,0xffff8000ffff6cd8
process=0xffff8000ffffad60 user=0xffff8000371b2000, vmspace=0xfffffd806bf65378
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
91813 161865 7604 0 7 0 syz-executor
89944 161891 65818 0 2 0 syz-executor
89944 92814 65818 0 2 0x4000000 syz-executor
4514 19817 11810 0 2 0 syz-executor
4514 211505 11810 0 3 0x4000080 fsleep syz-executor
9044 326840 8462 0 2 0x2 ndp
8462 318832 16236 0 3 0x10008a sigsusp sh
76932 361221 38769 0 2 0x500000 syz-executor
*76932 437805 38769 0 7 0x4500000 syz-executor
76932 398779 38769 0 2 0x4500000 syz-executor
76932 236637 38769 0 3 0x4500080 fsleep syz-executor
38621 439217 23204 0 2 0 syz-executor
38621 422140 23204 0 3 0x4000080 fsleep syz-executor
72854 25659 13254 -1 2 0x490 syz-executor
72854 300798 13254 -1 3 0x4000090 ttyin syz-executor
72854 10808 13254 -1 3 0x4000090 fsleep syz-executor
38769 298444 72667 0 2 0x482 syz-executor
16236 423673 72667 0 3 0x82 wait syz-executor
16378 421655 72667 0 2 0x2 syz-executor
65818 185454 72667 0 2 0x482 syz-executor
23204 135154 72667 0 2 0x2 syz-executor
7604 32407 72667 0 2 0x482 syz-executor
13254 318783 72667 0 2 0x2 syz-executor
11810 177125 72667 0 2 0x2 syz-executor
4868 466340 1 0 3 0x100083 ttyin getty
26954 72841 0 0 3 0x14200 bored sosplice
72667 65969 56987 0 2 0x2 syz-executor
56987 125920 2212 0 3 0x10008a sigsusp ksh
2212 361608 11788 0 3 0x98 kqread sshd-session
11788 385441 53170 0 3 0x92 kqread sshd-session
53170 203310 1 0 3 0x88 kqread sshd
94244 26952 60739 74 3 0x1100092 bpf pflogd
60739 194342 1 0 3 0x80 sbwait pflogd
26211 93752 79463 73 2 0x1100010 syslogd
79463 373937 1 0 3 0x100082 sbwait syslogd
67606 28387 1 0 3 0x100080 kqread resolvd
82155 95596 31724 77 3 0x100092 kqread dhcpleased
26151 471322 31724 77 3 0x100092 kqread dhcpleased
31724 256793 1 0 3 0x80 kqread dhcpleased
14786 175544 0 0 3 0x14200 bored smr
38050 152044 0 0 2 0x14200 zerothread
21075 233218 0 0 3 0x14200 aiodoned aiodoned
12867 350851 0 0 3 0x14200 syncer update
34070 479416 0 0 3 0x14200 cleaner cleaner
90329 85004 0 0 3 0x14200 reaper reaper
22682 319520 0 0 3 0x14200 pgdaemon pagedaemon
77946 301873 0 0 3 0x14200 bored viomb
70019 331282 0 0 3 0x40014200 acpi0 acpi0
65672 332847 0 0 3 0x40014200 idle1
72112 378178 0 0 3 0x14200 bored softnet3
88362 340108 0 0 3 0x14200 bored softnet2
90746 232001 0 0 3 0x14200 bored softnet1
83723 385908 0 0 2 0x14200 softnet0
93572 313258 0 0 3 0x14200 bored systqmp
33506 479829 0 0 3 0x14200 bored systq
62499 217512 0 0 2 0x14200 softclockmp
88798 352585 0 0 2 0x40014200 softclock
40168 478946 0 0 3 0x40014200 idle0
1 510981 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 76932 (syz-executor) thread 0xffff80002fd787c8 (437805)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83627dc0)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 sys_pledge+0x388 sys/kern/kern_pledge.c:531
#2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#3 Xsyscall+0x128
Process 76932 (syz-executor) thread 0xffff8000371d51f0 (398779)
exclusive rrwlock inode r = 0 (0xfffffd80743c11b8)
#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 vrele+0xd0 sys/kern/vfs_subr.c:818
#6 unveil_destroy+0x9a sys/kern/kern_unveil.c:181
#7 sys_pledge+0x399 sys/kern/kern_pledge.c:532
#8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 16378 (syz-executor) thread 0xffff80002fd78540 (421655)
exclusive rrwlock inode r = 0 (0xfffffd80743c1f88)
#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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:120
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230
#6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3100
#10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80743c12c8)
#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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3085
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 26211 (syslogd) thread 0xffff8000ffffdbe8 (93752)
exclusive rrwlock inode r = 0 (0xfffffd806e4a04e0)
#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:2927
#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{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10194 10173K 10431K 166960K 12191 0
pcb 17 16K 16K 166960K 155 0
rtable 216 7K 8K 166960K 1650 0
pf 36 18K 82K 166960K 169 0
ifaddr 41 7K 7K 166960K 217 0
ifgroup 55 2K 2K 166960K 240 0
sysctl 3 0K 0K 166960K 3 0
counters 64 36K 36K 166960K 156 0
ioctlops 0 0K 4K 166960K 1578 0
iov 0 0K 16K 166960K 40 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1585 100K 100K 166960K 2643 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 85 0
dirhash 12 2K 2K 166960K 18 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 18 65K 97K 166960K 1228 0
sigio 0 0K 0K 166960K 14 0
proc 73 103K 128K 166960K 1701 0
subproc 104 6K 6K 166960K 624 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 64 0
in_multi 95 7K 7K 166960K 557 0
ether_multi 1 0K 0K 166960K 6 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 91 413K 413K 166960K 91 0
exec 0 0K 1K 166960K 1017 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 235 93K 108K 166960K 10689 0
UVM aobj 50 4K 4K 166960K 50 0
pinsyscall 43 86K 108K 166960K 3344 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 18 0K 2K 166960K 154 0
temp 57 6819K 6883K 166960K 39549 0
kqueue 13 20K 28K 166960K 98 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> 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 120 164 0 161 1 0 1 1 0 8 0
rtentry 112 576 0 479 4 1 3 4 0 8 0
unpcb 144 574 0 557 6 5 1 4 0 8 0
syncache 336 3 0 3 1 1 0 1 0 8 0
tcpcb 808 317 0 311 16 15 1 8 0 8 0
arp 120 103 0 85 1 0 1 1 0 8 0
inpcb 336 1256 0 1246 27 25 2 13 0 8 1
nd6 136 150 0 126 1 0 1 1 0 8 0
pkpcb 40 3 0 3 3 2 1 1 0 8 1
kcovpl 48 48 0 40 1 0 1 1 0 8 0
ppxss 1168 2 0 2 1 1 0 1 0 8 0
pffrag 232 2 0 1 1 0 1 1 0 482 0
pffrnode 88 2 0 1 1 0 1 1 0 8 0
pffrent 40 4 0 3 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
pfrktable 1344 2 0 2 2 2 0 1 0 8 0
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pftag 88 3 0 2 1 0 1 1 0 8 0
pfqueue 264 1 0 0 1 0 1 1 0 8 0
pfstitem 24 98 0 57 1 0 1 1 0 8 0
pfstkey 128 98 0 57 2 0 2 2 0 8 0
pfstate 376 96 0 57 4 0 4 4 0 8 0
pfrule 1344 29 0 23 2 1 1 2 0 8 0
art_heap8 4096 2 0 1 2 1 1 2 0 8 0
art_heap4 256 2270 0 1848 30 3 27 29 0 8 0
art_table 32 2272 0 1849 4 0 4 4 0 8 0
art_node 16 573 0 486 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 2 2 1 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 82 0 72 1 0 1 1 0 8 0
shmpl 112 47 0 0 2 0 2 2 0 8 0
dirhash 1024 21 0 4 3 0 3 3 0 8 0
dino2pl 256 2628 0 1045 100 0 100 100 0 8 0
ffsino 272 2628 0 1045 106 0 106 106 0 8 0
nchpl 144 3596 0 1855 65 0 65 65 0 8 0
uvmvnodes 80 3779 0 0 78 0 78 78 0 8 0
vnodes 216 3779 0 0 210 0 210 210 0 8 0
namei 1024 16412 0 16411 5 4 1 2 0 8 0
percpumem 16 92 0 46 1 0 1 1 0 8 0
vcpupl 3904 5 0 0 1 0 1 1 0 8 0
vmpool 696 7 0 2 1 0 1 1 0 8 0
kstatmem 264 116 0 92 2 0 2 2 0 8 0
scsiplug 72 2 0 2 2 2 0 1 0 8 0
scxspl 216 28010 0 28010 15 14 1 8 1 8 1
plimitpl 152 325 0 308 1 0 1 1 0 8 0
sigapl 424 1449 0 1398 10 3 7 7 0 8 0
futexpl 64 8991 0 8987 4 3 1 1 0 8 0
knotepl 120 813 0 0 25 0 25 25 0 8 0
kqueuepl 216 226 0 216 5 4 1 5 0 8 0
pipepl 320 377 0 350 6 3 3 6 0 8 0
fdescpl 496 1430 0 1398 8 3 5 6 0 8 0
filepl 152 7898 0 7645 28 16 12 18 0 8 1
lockfpl 104 207 0 204 1 0 1 1 0 8 0
lockfspl 48 83 0 80 1 0 1 1 0 8 0
sessionpl 144 64 0 55 1 0 1 1 0 8 0
pgrppl 48 158 0 141 1 0 1 1 0 8 0
ucredpl 104 1073 0 1059 1 0 1 1 0 8 0
zombiepl 144 1398 0 1398 1 0 1 1 0 8 1
processpl 1160 1449 0 1398 5 1 4 5 0 8 0
procpl 648 2354 0 2295 8 2 6 7 0 8 0
srpgc 96 3 0 3 2 2 0 1 0 8 0
sosppl 168 4 0 4 2 2 0 1 0 8 0
sockpl 664 2002 0 1972 31 27 4 15 0 8 1
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 6 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 249 0 0 32 0 32 32 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 449 0 0 26 0 26 26 0 8 0
bufpl 280 8248 0 1392 490 0 490 490 0 8 0
anonpl 24 245631 0 241121 85 31 54 82 0 185 22
amapchunkpl 152 33748 0 33268 44 13 31 43 0 158 10
amappl16 200 4574 0 4491 26 17 9 14 0 8 4
amappl15 192 8 0 8 1 1 0 1 0 8 0
amappl14 184 199 0 187 1 0 1 1 0 8 0
amappl13 176 9 0 9 1 1 0 1 0 8 0
amappl12 168 2714 0 2681 4 2 2 3 0 8 0
amappl11 160 57 0 43 1 0 1 1 0 8 0
amappl10 152 70 0 70 1 1 0 1 0 8 0
amappl9 144 140 0 140 1 1 0 1 0 8 0
amappl8 136 22 0 20 1 0 1 1 0 8 0
amappl7 128 184 0 172 1 0 1 1 0 8 0
amappl6 120 567 0 564 1 0 1 1 0 8 0
amappl5 112 293 0 281 1 0 1 1 0 8 0
amappl4 104 432 0 412 1 0 1 1 0 8 0
amappl3 96 6510 0 6400 4 0 4 4 0 8 0
amappl2 88 1181 0 1114 2 0 2 2 0 8 0
amappl1 80 13447 0 12847 18 4 14 15 0 8 1
amappl 88 9990 0 9823 5 0 5 5 0 92 0
dma65536 65536 1 0 1 1 1 0 1 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma2048 2048 1 0 1 1 0 1 1 0 8 1
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 49 0 0 1 0 1 1 0 8 0
uaddrrnd 24 1437 0 1400 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1437 0 1400 1 0 1 1 0 8 0
vmmpekpl 168 14215 0 14172 3 0 3 3 0 8 0
vmmpepl 168 94038 0 92105 99 11 88 93 0 357 0
vmsppl 440 1436 0 1400 7 2 5 5 0 8 0
rwobjpl 56 32971 0 28122 70 1 69 69 0 8 0
pdppl 4096 2881 0 2805 158 77 81 87 0 8 5
pvpl 32 44150 0 0 357 1 356 356 0 265 0
pmappl 248 1436 0 1400 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 516 0 130 12 0 12 12 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198
vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813
unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181
sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532
syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2121497f0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff800029b7bff0) 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
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline]
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144
syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78c7559fc290, count: 9
ddb{1}> trace
x86_ipi_db(ffff800029b7bff0) 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
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline]
__mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144
syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78c7559fc290, count: -6