panic: Data modified on freelist: word 14 of object 0xffff8000016469c0 size 0x30 previous type temp (0x0 != 0xdead4110)
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
103453 3032 0 0 0x1 0 syz-executor
*206552 3032 0 0 0x4000001 1 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83499734) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(30,7f,1) at malloc+0xdb6 sys/kern/kern_malloc.c:357
ktrsyscall(ffff80002a22b240,53,28,ffff8000353dc4f0) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff8000353dc4f0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000353dc4f0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x96a866ae5c0, count: 9
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: Data modified on freelist: word 14 of object 0xffff8000016469c0 size 0x30 previous type temp (0x0 != 0xdead4110)
ddb{1}> show kasan
No such command
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83499734) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(30,7f,1) at malloc+0xdb6 sys/kern/kern_malloc.c:357
ktrsyscall(ffff80002a22b240,53,28,ffff8000353dc4f0) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff8000353dc4f0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000353dc4f0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x96a866ae5c0, count: -6
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000353dc1a0
rbx 0xffff80002999ee0f
rdx 0xffff8000015fef40
rcx 0xffff80002a22b240
rax 0xffff80002999dff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x66ed31cc9ac4f5f1
r11 0xbeeb451c12943c52
r12 0xffff80002999ec10
r13 0
r14 0
r15 0x1
rip 0xffffffff81cff665 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff8000353dc190
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=206552 pid=3032 tcnt=2 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=0xffff80002a22b770,0xffff80002a22afb8
process=0xffff800045fee6d8 user=0xffff8000353d7000, vmspace=0xfffffd807ef8b018
estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
74571 321156 62366 0 2 0 0 syz-executor
74571 440299 62366 0 2 0 0x4000080 syz-executor
74571 153694 62366 0 3 0 0x4000080 fsleep syz-executor
20881 491308 98965 0 2 0 0 syz-executor
20881 105149 98965 0 3 0 0x4000080 fsleep syz-executor
3032 103453 28592 0 7 0 0x1 syz-executor
* 3032 206552 28592 0 7 0 0x4000001 syz-executor
90128 382895 20576 0 2 0x2 0 syz-executor
58337 92707 32533 0 2 0x2 0 sh
84750 58250 20576 0 2 0x2 0 syz-executor
32533 87971 20576 0 3 0x2 0x80 wait syz-executor
62366 374637 20576 0 3 0x2 0x80 nanoslp syz-executor
28592 408884 20576 0 3 0x2 0x80 nanoslp syz-executor
89507 313472 20576 0 3 0x2 0x80 wait syz-executor
98965 327057 20576 0 3 0x2 0x80 nanoslp syz-executor
69061 82148 20576 0 3 0x2 0 biowait syz-executor
20576 88154 29104 0 3 0x2 0x80 kqread syz-executor
29104 216801 37997 0 3 0x100002 0x88 sigsusp ksh
37997 152590 84602 0 3 0x10 0x88 kqread sshd-session
84602 202793 49783 0 3 0x12 0x80 kqread sshd-session
62373 385121 1 0 3 0x100003 0x80 ttyin getty
49783 352393 1 0 3 0 0x88 kqread sshd
95734 102976 23450 74 3 0x1100012 0x80 bpf pflogd
23450 501499 1 0 3 0 0x80 sbwait pflogd
562 272195 20804 73 3 0x1100010 0x80 kqread syslogd
20804 325677 1 0 3 0x100002 0x80 sbwait syslogd
64916 152848 1 0 3 0x100000 0x80 kqread resolvd
72232 94649 86660 77 3 0x100012 0x80 kqread dhcpleased
86532 340250 86660 77 3 0x100012 0x80 kqread dhcpleased
86660 10711 1 0 3 0 0x80 kqread dhcpleased
75471 262050 0 0 3 0x14000 0x200 bored smr
94293 102127 0 0 2 0x14000 0x200 zerothread
18409 128883 0 0 3 0x14000 0x200 aiodoned aiodoned
17517 75704 0 0 3 0x14000 0x200 syncer update
7960 3657 0 0 3 0x14000 0x200 cleaner cleaner
81131 355636 0 0 3 0x14000 0x200 reaper reaper
66536 458193 0 0 3 0x14000 0x200 pgdaemon pagedaemon
66077 50779 0 0 3 0x14000 0x200 bored viomb
43028 315116 0 0 3 0x14000 0x40000200 acpi0 acpi0
77911 402599 0 0 3 0x14000 0x40000200 idle1
82034 507420 0 0 3 0x14000 0x200 bored softnet1
17903 148147 0 0 3 0x14000 0x200 bored softnet0
45631 235954 0 0 3 0x14000 0x200 smrbar systqmp
73535 383129 0 0 3 0x14000 0x200 bored systq
86312 69723 0 0 3 0x14000 0x200 tmoslp softclockmp
2146 451371 0 0 3 0x14000 0x40000200 tmoslp softclock
87602 334553 0 0 3 0x14000 0x40000200 idle0
1 86016 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff839cf048)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 malloc+0x2ef sys/kern/kern_malloc.c:200
#3 ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
#4 syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
#4 syscall+0x305 sys/arch/amd64/amd64/trap.c:791
#5 Xsyscall+0x128
Process 69061 (syz-executor) thread 0xffff80002a22c010 (82148)
exclusive rrwlock inode r = 0 (0xfffffd8064a30eb8)
#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 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
#11 namei+0x7c1 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd807037e0b8)
#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 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
#10 namei+0x7c1 sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#13 Xsyscall+0x128
Process 45631 (systqmp) thread 0xffff800045ffe530 (235954)
shared rwlock systqmp r = 0 (0xffffffff839c8c38)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11085 12166K 12295K 166960K 12499 0
pcb 18 12K 12K 166960K 64 0
rtable 143 13K 15K 166960K 925 0
pf 36 18K 26K 166960K 125 0
ifaddr 27 4K 8K 166960K 132 0
ifgroup 47 2K 2K 166960K 165 0
sysctl 1 1K 9K 166960K 5 0
counters 66 36K 37K 166960K 136 0
ioctlops 0 0K 4K 166960K 1558 0
iov 0 0K 12K 166960K 12 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1324 83K 84K 166960K 1729 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 14 0K 0K 166960K 15 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 15 50K 89K 166960K 621 0
sigio 0 0K 0K 166960K 2 0
proc 76 131K 180K 166960K 1103 0
subproc 57 3K 4K 166960K 237 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 23 0
in_multi 44 2K 7K 166960K 298 0
ether_multi 1 0K 0K 166960K 3 0
mrt 0 0K 0K 166960K 13 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 229 1023K 1023K 166960K 229 0
exec 0 0K 1K 166960K 639 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 211 159K 186K 166960K 6640 0
UVM aobj 7 2K 2K 166960K 7 0
pinsyscall 40 80K 104K 166960K 2257 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 2 0K 0K 166960K 3 0
NDP 10 0K 1K 166960K 91 0
temp 30 9121K 9198K 166960K 21920 0
kqueue 13 20K 30K 166960K 70 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 28 0 0 1 0 1 1 0 8 0
rtpcb 120 86 0 83 1 0 1 1 0 8 0
rtentry 176 306 0 250 6 0 6 6 0 8 0
unpcb 144 138 0 119 1 0 1 1 0 8 0
syncache 336 5 0 5 2 1 1 1 0 8 1
tcpcb 736 113 0 109 7 0 7 7 0 8 6
arp 136 54 0 46 1 0 1 1 0 8 0
inpcb 328 393 0 383 9 2 7 7 0 8 6
nd6 152 75 0 66 1 0 1 1 0 8 0
pkpcb 40 4 0 4 1 0 1 1 0 8 1
kcovpl 48 26 0 20 1 0 1 1 0 8 0
ppxss 1192 9 0 9 1 0 1 1 0 8 1
pppxif 1576 4 0 4 1 0 1 1 0 8 1
pfstscr 40 9 0 4 1 0 1 1 0 8 0
pffrag 232 6 0 2 1 0 1 1 0 482 0
pffrnode 88 6 0 2 1 0 1 1 0 8 0
pffrent 40 18 0 14 1 0 1 1 0 8 0
pfosfp 40 1429 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1429 0 714 21 0 21 21 0 8 0
pfanchor 1288 3 0 0 1 0 1 1 0 8 0
pftag 88 2 0 0 1 0 1 1 0 8 0
pfstitem 24 51 0 2 1 0 1 1 0 8 0
pfstkey 128 57 0 9 2 0 2 2 0 8 0
pfstate 448 50 0 5 6 0 6 6 0 8 0
pfrule 1360 28 0 21 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1230 0 904 31 0 31 31 0 8 4
art_table 40 1231 0 904 5 0 5 5 0 8 0
art_node 32 306 0 248 1 0 1 1 0 8 0
semapl 72 13 0 1 1 0 1 1 0 8 0
shmpl 120 4 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1991 0 485 95 0 95 95 0 8 0
ffsino 296 1991 0 485 116 0 116 116 0 8 0
nchpl 144 2532 0 763 66 0 66 66 0 8 0
vnodes 216 2379 0 0 133 0 133 133 0 8 0
namei 1024 11003 0 11003 4 3 1 3 0 8 1
percpumem 16 84 0 35 1 0 1 1 0 8 0
kstatmem 264 87 0 62 3 0 3 3 0 8 0
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 8734 0 8733 11 3 8 8 1 8 7
plimitpl 152 81 0 61 1 0 1 1 0 8 0
sigapl 424 909 0 864 7 1 6 7 0 8 0
knotepl 120 537 0 0 17 0 17 17 0 8 0
kqueuepl 224 140 0 131 3 1 2 3 0 8 1
pipepl 344 213 0 185 4 1 3 4 0 8 0
fdescpl 528 893 0 864 3 0 3 3 0 8 0
filepl 160 3872 0 3661 14 0 14 14 0 8 2
lockfpl 104 155 0 153 1 0 1 1 0 8 0
lockfspl 48 51 0 49 1 0 1 1 0 8 0
sessionpl 144 50 0 41 1 0 1 1 0 8 0
pgrppl 48 80 0 63 1 0 1 1 0 8 0
ucredpl 104 523 0 510 1 0 1 1 0 8 0
zombiepl 144 865 0 864 1 0 1 1 0 8 0
processpl 1240 909 0 864 5 0 5 5 0 8 1
procpl 664 1301 0 1252 6 0 6 6 0 8 1
sosppl 176 1 0 1 1 0 1 1 0 8 1
sockpl 752 627 0 595 12 2 10 10 0 8 6
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 118 0 0 15 0 15 15 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 24 0 0 3 0 3 3 0 8 0
mextrefs 64 26 0 0 1 0 1 1 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 217 0 0 14 0 14 14 0 8 0
bufpl 272 3007 0 106 194 0 194 194 0 8 0
anonpl 32 5662 0 0 46 0 46 46 0 247 0
amapchunkpl 152 18788 0 18379 28 0 28 28 0 158 8
amappl16 200 1947 0 1924 10 3 7 7 0 8 4
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 645 0 643 1 0 1 1 0 8 0
amappl13 176 164 0 152 1 0 1 1 0 8 0
amappl12 168 1218 0 1192 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 63 0 49 1 0 1 1 0 8 0
amappl9 144 275 0 275 1 1 0 1 0 8 0
amappl8 136 198 0 193 1 0 1 1 0 8 0
amappl7 128 186 0 172 1 0 1 1 0 8 0
amappl6 120 330 0 328 1 0 1 1 0 8 0
amappl5 112 100 0 89 1 0 1 1 0 8 0
amappl4 104 349 0 329 1 0 1 1 0 8 0
amappl3 96 3410 0 3330 3 0 3 3 0 8 0
amappl2 88 966 0 890 2 0 2 2 0 8 0
amappl1 80 13715 0 13126 15 1 14 15 0 8 0
amappl 88 5569 0 5429 5 0 5 5 0 92 0
uvmvnodes 80 108 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 6 0 0 1 0 1 1 0 8 0
uaddrrnd 24 893 0 864 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 893 0 864 1 0 1 1 0 8 0
vmmpekpl 168 8847 0 8790 3 0 3 3 0 8 0
vmmpepl 168 65553 0 63800 93 0 93 93 0 357 6
vmsppl 488 892 0 864 5 0 5 5 0 8 0
rwobjpl 80 20942 0 19935 25 0 25 25 0 8 1
pdppl 4096 1793 0 1728 115 42 73 83 0 8 8
pvpl 32 14447 0 0 118 1 117 117 0 265 0
pmappl 256 892 0 864 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 500 0 49 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff839bfff0) 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
mtx_enter(ffffffff839cf038) at mtx_enter+0x377 sys/kern/kern_lock.c:454
malloc(20,7f,1) at malloc+0x2ef sys/kern/kern_malloc.c:200
ktrsyscall(ffff80002a22a548,4a,18,ffff80002a315060) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff80002a315060) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a315060) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x702c1af99b50, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff839bfff0) 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
mtx_enter(ffffffff839cf038) at mtx_enter+0x377 sys/kern/kern_lock.c:454
malloc(20,7f,1) at malloc+0x2ef sys/kern/kern_malloc.c:200
ktrsyscall(ffff80002a22a548,4a,18,ffff80002a315060) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff80002a315060) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a315060) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x702c1af99b50, count: -8
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83499734) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(30,7f,1) at malloc+0xdb6 sys/kern/kern_malloc.c:357
ktrsyscall(ffff80002a22b240,53,28,ffff8000353dc4f0) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff8000353dc4f0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000353dc4f0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x96a866ae5c0, count: 9
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83499734) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(30,7f,1) at malloc+0xdb6 sys/kern/kern_malloc.c:357
ktrsyscall(ffff80002a22b240,53,28,ffff8000353dc4f0) at ktrsyscall+0x19a sys/kern/kern_ktrace.c:174
syscall(ffff8000353dc4f0) at syscall+0x305 mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff8000353dc4f0) at syscall+0x305 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x96a866ae5c0, count: -6