uvm_fault(0xfffffd8066fc4d08, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at mtx_enter+0x6e: movq 0(%r14),%rax
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*400216 76808 0 0 0x4000000 0 syz-executor
mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335
clockintr_unbind(ffff80000152fb30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001490700) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c9a6fc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8066e42a50,81,fffffd8007bfb888,ffff80003a95e2c8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615
fdrop(fffffd806636bbd0,ffff80003a95e2c8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806636bbd0,ffff80003a95e2c8) at closef+0x190 sys/kern/kern_descrip.c:1264
syscall(ffff80003c9a7210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a7210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x452ae69c430, count: 4
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd8066fc4d08, 0x18, 0, 1) -> e
ddb> trace
mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335
clockintr_unbind(ffff80000152fb30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001490700) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c9a6fc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8066e42a50,81,fffffd8007bfb888,ffff80003a95e2c8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615
fdrop(fffffd806636bbd0,ffff80003a95e2c8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806636bbd0,ffff80003a95e2c8) at closef+0x190 sys/kern/kern_descrip.c:1264
syscall(ffff80003c9a7210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a7210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x452ae69c430, count: -11
ddb> show registers
rdi 0
rsi 0
rbp 0xffff80003c9a6e70
rbx 0
rdx 0
rcx 0xffff80003a95e2c8
rax 0xffff80003a95e200
r8 0xffffffff81e68880 uvm_map_inentry_sp
r9 0x1
r10 0
r11 0x495442e704e90495
r12 0x1
r13 0
r14 0x18
r15 0
rip 0xffffffff814dc20e mtx_enter+0x6e
cs 0x8
rflags 0x10297 __ALIGN_SIZE+0xf297
rsp 0xffff80003c9a6e40
ss 0x10
mtx_enter+0x6e: movq 0(%r14),%rax
ddb> show proc
PROC (syz-executor) tid=400216 pid=76808 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=82, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003a95ea90,0xffff80003a95ed38
process=0xffff8000ffff56a8 user=0xffff80003c9a2000, vmspace=0xfffffd8066fc4d08
estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
40695 224918 26151 0 2 0 syz-executor
40695 400054 26151 0 3 0x4000080 fsleep syz-executor
76808 92737 18475 0 2 0 syz-executor
*76808 400216 18475 0 7 0x4000000 syz-executor
76808 320767 18475 0 3 0x4000080 fsleep syz-executor
95639 368351 93538 0 2 0 syz-executor
95639 87219 93538 0 3 0x4000080 fsleep syz-executor
95639 350127 93538 0 2 0x4000000 syz-executor
98620 422639 68224 0 2 0 syz-executor
98620 515777 68224 0 2 0x4000000 syz-executor
32491 150287 44269 0 2 0 syz-executor
32491 9883 44269 0 2 0x4000000 syz-executor
32491 322327 44269 0 2 0x4000000 syz-executor
5677 459246 46905 0 3 0x3000 suspend syz-executor
5677 504901 46905 0 2 0x4081000 syz-executor
5677 186462 46905 0 3 0x4081000 inode syz-executor
5677 321647 46905 0 3 0x4081000 inode syz-executor
51076 45453 1 0 3 0x80 nanoslp init
33290 316209 0 0 3 0x14200 bored sosplice
62055 275072 0 0 3 0x14280 nfsidl nfsio
36509 450502 0 0 3 0x14280 nfsidl nfsio
37817 392332 0 0 3 0x14280 nfsidl nfsio
10325 202603 0 0 3 0x14280 nfsidl nfsio
40410 461525 0 0 3 0x14280 nfsidl nfsio
11562 518315 0 0 3 0x14280 nfsidl nfsio
65472 363270 0 0 3 0x14280 nfsidl nfsio
97444 357813 0 0 3 0x14280 nfsidl nfsio
55578 218214 0 0 3 0x14280 nfsidl nfsio
40084 263671 0 0 3 0x14280 nfsidl nfsio
37056 69338 0 0 3 0x14280 nfsidl nfsio
39590 437231 0 0 3 0x14280 nfsidl nfsio
94617 372582 0 0 3 0x14280 nfsidl nfsio
60607 4863 0 0 3 0x14280 nfsidl nfsio
34656 443915 0 0 3 0x14280 nfsidl nfsio
63918 86893 0 0 3 0x14280 nfsidl nfsio
91156 272146 0 0 3 0x14280 nfsidl nfsio
54220 337735 0 0 3 0x14280 nfsidl nfsio
70222 122923 0 0 3 0x14280 nfsidl nfsio
72370 112210 0 0 3 0x14280 nfsidl nfsio
95862 454756 0 0 3 0x14200 acct acct
15920 162851 65569 0 3 0x82 sbwait sshd-session
26151 15811 62971 0 3 0x82 nanoslp syz-executor
36604 439385 62971 0 2 0x2 syz-executor
93538 99688 62971 0 3 0x82 nanoslp syz-executor
72256 267847 62971 0 3 0x82 wait syz-executor
44269 506978 62971 0 3 0x82 nanoslp syz-executor
46905 433679 62971 0 3 0x82 wait syz-executor
68224 61587 62971 0 3 0x82 nanoslp syz-executor
18475 31592 62971 0 2 0x3 syz-executor
62971 8896 76126 0 3 0x82 kqread syz-executor
76126 452314 42871 0 3 0x10008a sigsusp ksh
42871 330139 77353 0 3 0x98 kqread sshd-session
77353 512281 65569 0 3 0x92 kqread sshd-session
65569 400034 1 0 3 0x88 kqread sshd
92637 485895 21394 73 3 0x1100090 kqread syslogd
21394 271758 1 0 3 0x100082 sbwait syslogd
99482 281835 1 0 3 0x100080 kqread resolvd
38663 17433 74213 77 3 0x100092 kqread dhcpleased
17376 480242 74213 77 3 0x100092 kqread dhcpleased
74213 520200 1 0 3 0x80 kqread dhcpleased
76279 282375 0 0 3 0x14200 bored smr
49977 239311 0 0 2 0x14200 zerothread
98222 522622 0 0 3 0x14200 aiodoned aiodoned
46884 230484 0 0 3 0x14200 syncer update
65488 30710 0 0 3 0x14200 cleaner cleaner
52924 221736 0 0 3 0x14200 reaper reaper
64681 308975 0 0 3 0x14200 pgdaemon pagedaemon
91919 52983 0 0 3 0x14200 bored viomb
13576 137975 0 0 3 0x40014200 acpi0 acpi0
59356 446952 0 0 3 0x14200 bored softnet7
18556 259404 0 0 3 0x14200 bored softnet6
65352 289760 0 0 3 0x14200 bored softnet5
39798 30351 0 0 3 0x14200 bored softnet4
4446 131496 0 0 3 0x14200 bored softnet3
7981 47045 0 0 3 0x14200 bored softnet2
99324 464269 0 0 3 0x14200 bored softnet1
78475 313565 0 0 3 0x14200 bored softnet0
71346 372996 0 0 3 0x14200 bored systqmp
51518 416992 0 0 3 0x14200 bored systq
3070 308052 0 0 3 0x40014200 tmoslp softclock
90605 340139 0 0 3 0x40014200 idle0
1 86675 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10187 11058K 11627K 166960K 12163 0
pcb 17 14K 16K 166960K 387 0
rtable 146 9K 9K 166960K 386 0
pf 32 13K 20K 166960K 205 0
ifaddr 30 5K 7K 166960K 80 0
ifgroup 46 2K 2K 166960K 129 0
sysctl 4 1K 9K 166960K 8 0
counters 31 17K 18K 166960K 139 0
ioctlops 0 0K 4K 166960K 316 0
iov 0 0K 32K 166960K 154 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1434 90K 91K 166960K 2044 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 18 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 26 0
dirhash 12 2K 2K 166960K 21 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 20 179K 346K 166960K 817 0
sigio 0 0K 0K 166960K 12 0
proc 52 50K 116K 166960K 593 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 187 0
in_multi 61 4K 7K 166960K 143 0
ether_multi 1 0K 0K 166960K 7 0
mrt 0 0K 0K 166960K 6 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 2K 166960K 476 0
fusefs mount 1 32K 32K 166960K 1 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 236 155K 179K 166960K 8504 0
UVM aobj 91 5K 5K 166960K 94 0
pinsyscall 40 80K 94K 166960K 1821 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 29 0
NDP 10 0K 2K 166960K 52 0
temp 54 8638K 8708K 166960K 33758 0
kqueue 14 22K 29K 166960K 139 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 117 0 114 1 0 1 1 0 8 0
rtentry 136 120 0 68 4 0 4 4 0 8 0
unpcb 144 648 0 631 6 5 1 6 0 8 0
syncache 336 5 0 5 1 1 0 1 0 8 0
tcpcb 736 454 0 448 7 6 1 7 0 8 0
arp 96 11 0 5 1 0 1 1 0 8 0
ipq 40 2 0 0 1 0 1 1 0 8 0
ipqe 40 3 0 0 1 0 1 1 0 8 0
inpcb 328 1052 0 1042 11 9 2 10 0 8 1
ip6q 72 19 0 17 1 0 1 1 0 8 0
ip6af 40 38 0 36 1 0 1 1 0 8 0
nd6 104 23 0 12 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 1 0 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1072 97 0 97 2 1 1 1 0 8 1
pppxif 1384 5 0 5 1 1 0 1 0 8 0
pfstscr 40 7 0 6 1 0 1 1 0 8 0
pfrktable 1344 2 0 2 1 1 0 1 0 8 0
pfanchor 1288 1 0 0 1 0 1 1 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 4 0 0 1 0 1 1 0 8 0
pfstkey 128 14 0 10 1 0 1 1 0 8 0
pfstate 384 7 0 5 1 0 1 1 0 8 0
pfrule 1344 6 0 6 2 1 1 1 0 8 1
rttmr 136 3 0 3 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 634 0 348 28 7 21 28 0 8 0
art_table 40 636 0 348 5 0 5 5 0 8 0
art_node 32 119 0 73 1 0 1 1 0 8 0
sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 23 0 13 1 0 1 1 0 8 0
shmpl 112 91 0 3 3 0 3 3 0 8 0
dirhash 1024 23 0 6 3 0 3 3 0 8 0
dino2pl 256 2968 0 1471 95 0 95 95 0 8 0
ffsino 256 2968 0 1471 95 0 95 95 0 8 0
nchpl 144 4107 0 2423 63 0 63 63 0 8 0
rtmask 32 7 0 7 1 1 0 1 0 8 0
uvmvnodes 80 3391 0 0 70 0 70 70 0 8 0
vnodes 216 3391 0 0 189 0 189 189 0 8 0
namei 1024 14334 0 14333 2 1 1 2 0 8 0
kstatmem 264 72 0 52 2 0 2 2 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 5 0 5 1 1 0 1 0 8 0
scxspl 216 17065 0 17065 9 7 2 8 1 8 2
plimitpl 152 280 0 262 1 0 1 1 0 8 0
sigapl 424 1092 0 1019 9 0 9 9 0 8 0
knotepl 120 45605 0 45556 10 7 3 10 0 8 0
kqueuepl 184 239 0 229 1 0 1 1 0 8 0
pipepl 304 225 0 198 3 0 3 3 0 8 0
fdescpl 448 1049 0 1018 5 1 4 5 0 8 0
filepl 120 7043 0 6828 11 2 9 11 0 8 0
lockfpl 104 298 0 296 1 0 1 1 0 8 0
lockfspl 48 127 0 125 1 0 1 1 0 8 0
sessionpl 144 24 0 16 1 0 1 1 0 8 0
pgrppl 48 46 0 30 1 0 1 1 0 8 0
ucredpl 104 1176 0 1165 1 0 1 1 0 8 0
zombiepl 144 1038 0 1036 1 0 1 1 0 8 0
processpl 1152 1092 0 1019 6 0 6 6 0 8 0
procpl 664 2090 0 2006 8 0 8 8 0 8 0
sosppl 168 1 0 1 1 1 0 1 0 8 0
sockpl 552 2015 0 1985 12 9 3 12 0 8 0
mcl64k 65536 59 0 59 1 1 0 1 0 8 0
mcl16k 16384 2 0 2 1 1 0 1 0 8 0
mcl12k 12288 2 0 2 1 1 0 1 0 8 0
mcl8k 8192 7 0 7 1 1 0 1 0 8 0
mcl4k 4096 3330 0 3279 15 8 7 15 0 8 0
mcl2k 2048 1327 0 1325 2 1 1 2 0 8 0
mtagpl 96 9 0 6 1 0 1 1 0 8 0
mbufpl 256 11692 0 11553 15 2 13 15 0 8 0
bufpl 280 6604 0 376 446 0 446 446 0 8 0
anonpl 24 164135 0 159093 47 15 32 47 0 187 0
amapchunkpl 152 28222 0 27713 41 19 22 41 0 158 2
amappl16 200 3034 0 2892 20 12 8 15 0 8 0
amappl15 192 6 0 6 1 1 0 1 0 8 0
amappl14 184 111 0 101 1 0 1 1 0 8 0
amappl13 176 6 0 6 1 1 0 1 0 8 0
amappl12 168 1656 0 1627 3 1 2 3 0 8 0
amappl11 160 45 0 35 1 0 1 1 0 8 0
amappl10 152 4 0 4 1 1 0 1 0 8 0
amappl9 144 254 0 254 1 1 0 1 0 8 0
amappl8 136 22 0 20 1 0 1 1 0 8 0
amappl7 128 115 0 104 1 0 1 1 0 8 0
amappl6 120 227 0 221 1 0 1 1 0 8 0
amappl5 112 110 0 103 1 0 1 1 0 8 0
amappl4 104 276 0 260 1 0 1 1 0 8 0
amappl3 96 4834 0 4735 3 0 3 3 0 8 0
amappl2 88 1290 0 1215 2 0 2 2 0 8 0
amappl1 80 11018 0 10409 15 0 15 15 0 8 0
amappl 88 7710 0 7539 5 0 5 5 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 7 0 7 1 1 0 1 0 8 0
dma128 128 255 0 255 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 93 0 3 2 0 2 2 0 8 0
uaddrrnd 24 1048 0 1018 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1048 0 1018 1 0 1 1 0 8 0
vmmpekpl 168 9805 0 9773 2 0 2 2 0 8 0
vmmpepl 168 70873 0 68798 101 8 93 100 0 357 0
vmsppl 368 1048 0 1018 4 1 3 4 0 8 0
rwobjpl 40 23470 0 18955 46 0 46 46 0 8 0
pdppl 4096 2102 0 2036 96 28 68 80 0 8 2
pvpl 32 453814 0 441757 119 21 98 117 0 265 0
pmappl 216 1048 0 1018 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 376 0 61 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335
clockintr_unbind(ffff80000152fb30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001490700) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c9a6fc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8066e42a50,81,fffffd8007bfb888,ffff80003a95e2c8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615
fdrop(fffffd806636bbd0,ffff80003a95e2c8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806636bbd0,ffff80003a95e2c8) at closef+0x190 sys/kern/kern_descrip.c:1264
syscall(ffff80003c9a7210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a7210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x452ae69c430, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335
clockintr_unbind(ffff80000152fb30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001490700) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff80003a95e2c8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c9a6fc0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8066e42a50,81,fffffd8007bfb888,ffff80003a95e2c8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806636bbd0,ffff80003a95e2c8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615
fdrop(fffffd806636bbd0,ffff80003a95e2c8) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806636bbd0,ffff80003a95e2c8) at closef+0x190 sys/kern/kern_descrip.c:1264
syscall(ffff80003c9a7210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9a7210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x452ae69c430, count: -11