uvm_fault(0xffffffff82db48e0, 0xfffffd806b46a2e0, 0, 4) -> e
kernel: page fault trap, code=11
Stopped at 0xfffffd806b46a2e0: lock std
TID PID UID PRFLAGS PFLAGS CPU COMMAND
39510 92272 0 0x8000002 0 1 syz-executor.7
* 62781 31590 0 0x14000 0x200 0K reaper
fffffd806b46a2e0(fffffd807e51fdf0,fffffd807e51fdf0,0,fffffd807e51fdf0,293,0) at 0xfffffd806b46a2e0
softclock_process_kclock_timeout(fffffd807e51fdf0,0) at softclock_process_kclock_timeout+0x1cf sys/kern/kern_timeout.c:696
softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749
softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x1d
printf(ffffffff829418cc) at printf+0x88 sys/kern/subr_prf.c:532
uvm_fault_unwire_locked(fffffd806b216540,932ddb9e000,932ddd9d000) at uvm_fault_unwire_locked+0x211
uvm_unmap_kill_entry_withlock(fffffd806b216540,fffffd806b6c2248,0) at uvm_unmap_kill_entry_withlock+0x6b sys/uvm/uvm_map.c:1894
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534
uvmspace_free(fffffd806b216540) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463
end trace frame: 0x0, count: 3
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: uvm_fault(0xffffffff82db48e0, 0xfffffd806b46a2e0, 0, 4) -> e
ddb{0}> trace
fffffd806b46a2e0(fffffd807e51fdf0,fffffd807e51fdf0,0,fffffd807e51fdf0,293,0) at 0xfffffd806b46a2e0
softclock_process_kclock_timeout(fffffd807e51fdf0,0) at softclock_process_kclock_timeout+0x1cf sys/kern/kern_timeout.c:696
softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749
softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x1d
printf(ffffffff829418cc) at printf+0x88 sys/kern/subr_prf.c:532
uvm_fault_unwire_locked(fffffd806b216540,932ddb9e000,932ddd9d000) at uvm_fault_unwire_locked+0x211
uvm_unmap_kill_entry_withlock(fffffd806b216540,fffffd806b6c2248,0) at uvm_unmap_kill_entry_withlock+0x6b sys/uvm/uvm_map.c:1894
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534
uvmspace_free(fffffd806b216540) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463
end trace frame: 0x0, count: -12
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff80002a1555a0
rbx 0
rdx 0
rcx 0xffff80002a149488
rax 0x9
r8 0x101010101010101
r9 0x8080808080808080
r10 0x2b89d50ffd88b184
r11 0xfffffd806b46a2e0
r12 0
r13 0xffffffff82d1de30 timeout_spinlock_obj
r14 0
r15 0xfffffd806b46a2e0
rip 0xfffffd806b46a2e0
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a155558
ss 0x10
0xfffffd806b46a2e0: lock std
ddb{0}> show proc
PROC (reaper) tid=62781 pid=31590 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
runpri=86, usrpri=86, slppri=4, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff80002a1499a8,0xffff80002a149208
process=0xffff80002a15b9b8 user=0xffff80002a150000, vmspace=0xffffffff82d61808
estcpu=36, cpticks=74, pctcpu=8.26, user=0, sys=30, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
8683 250425 57575 0 2 0x8000000 syz-executor.5
8683 7815 57575 0 3 0xc000080 bpf syz-executor.5
70461 50505 1 0 3 0x18100083 ttyin getty
57575 134413 99344 0 2 0x8000482 syz-executor.5
74973 497149 99344 0 2 0x8000482 syz-executor.6
14197 363234 0 0 3 0x14200 acct acct
17625 169136 99344 0 3 0x8000082 wait syz-executor.2
82734 344127 99344 0 2 0x8000482 syz-executor.4
92272 39510 99344 0 7 0x8000002 syz-executor.7
74314 495060 99344 0 2 0x8000002 syz-executor.0
97304 487107 99344 0 3 0x8000082 wait syz-executor.1
96716 111937 99344 0 2 0x8000482 syz-executor.3
79496 436349 0 0 3 0x14200 bored sosplice
99344 116088 44686 0 3 0x1a000082 thrsleep syz-fuzzer
99344 421387 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 24983 44686 0 3 0x1e000082 wait syz-fuzzer
99344 243780 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 483114 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 456434 44686 0 3 0x1e000082 wait syz-fuzzer
99344 423768 44686 0 3 0x1e000082 kqread syz-fuzzer
99344 521004 44686 0 3 0x1e000082 wait syz-fuzzer
99344 365111 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 367889 44686 0 3 0x1e000082 wait syz-fuzzer
99344 420607 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 344735 44686 0 3 0x1e000082 wait syz-fuzzer
99344 365428 44686 0 3 0x1e000082 thrsleep syz-fuzzer
99344 316613 44686 0 3 0x1e000082 wait syz-fuzzer
99344 344460 44686 0 3 0x1e000082 wait syz-fuzzer
99344 237270 44686 0 3 0x1e000082 wait syz-fuzzer
44686 175673 29731 0 3 0x810008a sigsusp ksh
29731 414993 88409 0 3 0x1800009a kqread sshd
88409 235049 1 0 3 0x18000088 kqread sshd
84376 279182 30492 74 3 0x19100092 bpf pflogd
30492 101676 1 0 3 0x18000080 sbwait pflogd
66978 346127 87010 73 2 0x19100010 syslogd
87010 103830 1 0 3 0x18100082 sbwait syslogd
35436 516417 1 0 3 0x18100080 kqread resolvd
15587 307551 57937 77 3 0x18100092 kqread dhcpleased
9745 31818 57937 77 3 0x18100092 kqread dhcpleased
57937 301642 1 0 3 0x18000080 kqread dhcpleased
73565 131042 0 0 2 0x14200 smr
92200 103649 0 0 2 0x14200 zerothread
54904 121441 0 0 3 0x14200 aiodoned aiodoned
28349 47769 0 0 3 0x14200 syncer update
25649 308875 0 0 3 0x14200 cleaner cleaner
*31590 62781 0 0 7 0x14200 reaper
38342 518780 0 0 3 0x14200 pgdaemon pagedaemon
16294 380296 0 0 3 0x14200 bored viomb
28780 197700 0 0 3 0x40014200 acpi0 acpi0
5861 335869 0 0 3 0x40014200 idle1
9409 89153 0 0 3 0x14200 bored softnet3
27890 488460 0 0 3 0x14200 bored softnet2
29128 79385 0 0 3 0x14200 bored softnet1
1666 210394 0 0 3 0x14200 bored softnet0
58824 400493 0 0 3 0x14200 bored systqmp
36933 385863 0 0 3 0x14200 bored systq
94636 157732 0 0 3 0x14200 tmoslp softclockmp
91606 266975 0 0 2 0x40014200 softclock
26835 25477 0 0 3 0x40014200 idle0
1 422282 0 0 3 0x8080082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
shared mutex timeout r = 0 (0xffffffff82d1de30)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1187
#1 timeout_run+0xbb sys/kern/kern_timeout.c:662
#2 softclock_process_kclock_timeout+0x1cf sys/kern/kern_timeout.c:696
#3 softclock+0x150 sys/kern/kern_timeout.c:749
#4 softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90
#5 Xsoftclock+0x27
#6 Xspllower+0x1d
#7 printf+0x88 sys/kern/subr_prf.c:532
#8 uvm_fault_unwire_locked+0x211
#9 uvm_unmap_kill_entry_withlock+0x6b sys/uvm/uvm_map.c:1894
#10 uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
#10 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534
#11 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
#12 reaper+0x197 sys/kern/kern_exit.c:463
#13 proc_trampoline+0x10
Process 66978 (syslogd) thread 0xffff8000ffffdc40 (346127)
Process 31590 (reaper) thread 0xffff80002a149488 (62781)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10243 6589K 7730K 166960K 20495 0
pcb 17 16K 18K 166960K 1626 0
rtable 255 9K 10K 166960K 2156 0
pf 41 11K 11K 166960K 346 0
ifaddr 49 17K 18K 166960K 338 0
ifgroup 72 3K 3K 166960K 578 0
sysctl 4 1K 3K 166960K 21 0
counters 72 37K 37K 166960K 360 0
ioctlops 0 0K 4K 166960K 2166 0
iov 0 0K 26K 166960K 843 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1503 94K 95K 166960K 8361 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 166 0
VM map 2 1K 1K 166960K 2 0
sem 15 1K 1K 166960K 20 0
dirhash 12 2K 2K 166960K 90 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 11 37K 85K 166960K 9970 0
sigio 0 0K 0K 166960K 283 0
proc 73 91K 128K 166960K 2682 0
subproc 104 6K 7K 166960K 663 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 2709 0
in_multi 97 7K 7K 166960K 958 0
ether_multi 1 0K 0K 166960K 63 0
mrt 2 0K 0K 166960K 30 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 259 1155K 1155K 166960K 259 0
exec 0 0K 1K 166960K 2350 0
pfkey data 0 0K 0K 166960K 13 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 360 224K 224K 166960K 92329 0
UVM aobj 120 11K 11K 166960K 124 0
pinsyscall 35 70K 108K 166960K 12330 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 1027 0
NDP 16 0K 2K 166960K 261 0
temp 77 6820K 7316K 166960K 245451 0
kqueue 12 18K 30K 166960K 1279 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 1222 0 1219 8 7 1 3 0 8 0
rtentry 112 699 0 586 4 0 4 4 0 8 0
unpcb 144 9257 0 9242 65 63 2 9 0 8 1
syncache 336 4 0 4 1 1 0 1 0 8 0
tcpqe 32 41 0 41 3 3 0 1 0 8 0
tcpcb 808 4352 0 4347 95 87 8 9 0 8 7
arp 120 135 0 115 1 0 1 1 0 8 0
inpcb 384 14274 0 14261 151 142 9 18 0 8 7
nd6 136 189 0 158 3 1 2 2 0 8 0
pkpcb 40 47 0 47 18 17 1 1 0 8 1
kcovpl 48 50 0 42 1 0 1 1 0 8 0
ppxss 1168 44 0 44 19 18 1 1 0 8 1
pffrag 232 134 0 130 4 3 1 2 0 482 0
pffrnode 88 134 0 130 2 1 1 1 0 8 0
pffrent 40 343 0 339 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 24 519 0 442 1 0 1 1 0 8 0
pfstkey 128 519 0 442 3 0 3 3 0 8 0
pfstate 376 519 0 442 12 3 9 9 0 8 0
pfrule 1344 21 0 16 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 2597 0 2112 46 15 31 33 0 8 0
art_table 32 2598 0 2112 5 1 4 5 0 8 0
art_node 16 683 0 581 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 7 1 0 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 14 0 1 1 0 1 1 0 8 0
shmpl 112 121 0 4 4 0 4 4 0 8 0
dirhash 1024 69 0 52 3 0 3 3 0 8 0
dino2pl 256 18037 0 16441 101 0 101 101 0 8 0
ffsino 272 18037 0 16441 108 1 107 107 0 8 0
nchpl 144 32715 0 30980 67 0 67 67 0 8 0
uvmvnodes 80 9954 0 0 204 0 204 204 0 8 0
vnodes 216 9954 0 0 553 0 553 553 0 8 0
namei 1024 118071 0 118071 9 8 1 2 0 8 1
percpumem 16 194 0 144 1 0 1 1 0 8 0
vcpupl 3904 31 0 2 4 0 4 4 0 8 0
vmpool 696 53 0 24 5 2 3 3 0 8 0
kstatmem 264 320 0 288 3 0 3 3 0 8 0
scsiplug 72 19 0 19 10 10 0 1 0 8 0
scxspl 216 132677 0 132677 45 42 3 8 1 8 3
plimitpl 152 1864 0 1847 1 0 1 1 0 8 0
sigapl 424 10249 0 10198 10 4 6 9 0 8 0
futexpl 64 139487 0 139487 10 9 1 1 0 8 1
knotepl 120 907 0 0 19 0 19 19 0 8 0
kqueuepl 216 2572 0 2564 12 11 1 5 0 8 0
pipepl 320 1630 0 1602 30 27 3 8 0 8 0
fdescpl 496 10197 0 10173 10 5 5 5 0 8 0
filepl 152 78090 0 77848 98 85 13 20 0 8 0
lockfpl 104 3815 0 3812 4 3 1 4 0 8 0
lockfspl 48 1332 0 1329 1 0 1 1 0 8 0
sessionpl 144 80 0 63 1 0 1 1 0 8 0
pgrppl 48 312 0 295 1 0 1 1 0 8 0
ucredpl 104 13616 0 13601 1 0 1 1 0 8 0
zombiepl 144 10205 0 10198 1 0 1 1 0 8 0
processpl 1136 10249 0 10198 6 1 5 6 0 8 0
procpl 656 23989 0 23908 13 6 7 9 0 8 0
srpgc 96 44 0 44 13 13 0 1 0 8 0
sosppl 168 136 0 136 18 18 0 1 0 8 0
sockpl 664 24917 0 24890 191 181 10 22 0 8 7
mcl64k 65536 5 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 12 0 0 2 0 2 2 0 8 0
mcl4k 4096 4 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 683 0 0 49 16 33 49 0 8 1
mtagpl 96 87 0 0 2 0 2 2 0 8 0
mbufpl 256 3116 0 0 170 0 170 170 0 8 0
bufpl 280 24938 0 14820 723 0 723 723 0 8 0
anonpl 24 1201908 0 1190230 227 142 85 117 0 186 13
amapchunkpl 152 309738 0 308661 170 128 42 61 0 158 0
amappl16 200 25140 0 24995 140 119 21 33 0 8 7
amappl15 192 13 0 13 2 2 0 1 0 8 0
amappl14 184 325 0 311 2 1 1 2 0 8 0
amappl13 176 17 0 15 1 0 1 1 0 8 0
amappl12 168 11534 0 11499 3 0 3 3 0 8 0
amappl11 160 61 0 47 1 0 1 1 0 8 0
amappl10 152 94 0 82 1 0 1 1 0 8 0
amappl9 144 367 0 367 2 2 0 1 0 8 0
amappl8 136 310 0 267 3 0 3 3 0 8 0
amappl7 128 81 0 63 1 0 1 1 0 8 0
amappl6 120 1036 0 1016 2 0 2 2 0 8 0
amappl5 112 417 0 402 1 0 1 1 0 8 0
amappl4 104 1027 0 982 3 1 2 3 0 8 0
amappl3 96 55953 0 55838 4 1 3 3 0 8 0
amappl2 88 10772 0 10693 5 3 2 5 0 8 0
amappl1 80 42631 0 42080 23 10 13 23 0 8 0
amappl 88 90818 0 90574 6 0 6 6 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 72 123 0 4 3 0 3 3 0 8 0
uaddrrnd 24 10252 0 10193 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 10252 0 10193 1 0 1 1 0 8 0
vmmpekpl 168 73957 0 73880 4 0 4 4 0 8 0
vmmpepl 168 607839 0 605669 242 134 108 121 0 357 5
vmsppl 440 10251 0 10192 7 0 7 7 0 8 0
rwobjpl 56 149428 0 138089 191 28 163 164 0 8 3
pdppl 4096 20511 0 20413 348 250 98 99 0 8 0
pvpl 32 49168 0 0 399 2 397 397 0 265 0
pmappl 248 10251 0 10192 4 0 4 4 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 958 0 398 17 0 17 17 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
fffffd806b46a2e0(fffffd807e51fdf0,fffffd807e51fdf0,0,fffffd807e51fdf0,293,0) at 0xfffffd806b46a2e0
softclock_process_kclock_timeout(fffffd807e51fdf0,0) at softclock_process_kclock_timeout+0x1cf sys/kern/kern_timeout.c:696
softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749
softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x1d
printf(ffffffff829418cc) at printf+0x88 sys/kern/subr_prf.c:532
uvm_fault_unwire_locked(fffffd806b216540,932ddb9e000,932ddd9d000) at uvm_fault_unwire_locked+0x211
uvm_unmap_kill_entry_withlock(fffffd806b216540,fffffd806b6c2248,0) at uvm_unmap_kill_entry_withlock+0x6b sys/uvm/uvm_map.c:1894
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd806b216540) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534
uvmspace_free(fffffd806b216540) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463
end trace frame: 0x0, count: -12
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800029cebff0) 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
__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(ffffffff82e700b0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82e700b0) at __mp_lock+0x133 sys/kern/kern_lock.c:147
syscall(ffff800037404af0) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff800037404af0) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x79d96b6b3840, count: 8
ddb{1}> trace
x86_ipi_db(ffff800029cebff0) 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
__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(ffffffff82e700b0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82e700b0) at __mp_lock+0x133 sys/kern/kern_lock.c:147
syscall(ffff800037404af0) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff800037404af0) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x79d96b6b3840, count: -7