uvm_fault(0xffffffff8355a950, 0xffff8000134b2804, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at ufsdirhash_findfree+0x240: movzwl 0x4(%r13),%r14d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*171470 71135 0 0x2 0 0K syz-executor
401221 5177 0 0x2 0x1 1 syz-executor
ufsdirhash_findfree(fffffd807e448880,1c,ffff800030dbd404) at ufsdirhash_findfree+0x240 sys/ufs/ufs/ufs_dirhash.c:517
ufs_lookup() at ufs_lookup+0xdfb sys/ufs/ufs/ufs_lookup.c:202
VOP_LOOKUP(fffffd806ee2fc00,ffff800030dbd740,ffff800030dbd770) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff800030dbd710) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff800030dbd710) at namei+0x7aa sys/kern/vfs_lookup.c:250
domkdirat(ffff800035b92a78,ffffff9c,7723e95a5410,1c0) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3084
syscall(ffff800030dbd8f0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800030dbd8f0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7723e95a53d0, count: 7
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(0xffffffff8355a950, 0xffff8000134b2804, 0, 1) -> d
ddb{0}> trace
ufsdirhash_findfree(fffffd807e448880,1c,ffff800030dbd404) at ufsdirhash_findfree+0x240 sys/ufs/ufs/ufs_dirhash.c:517
ufs_lookup() at ufs_lookup+0xdfb sys/ufs/ufs/ufs_lookup.c:202
VOP_LOOKUP(fffffd806ee2fc00,ffff800030dbd740,ffff800030dbd770) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff800030dbd710) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff800030dbd710) at namei+0x7aa sys/kern/vfs_lookup.c:250
domkdirat(ffff800035b92a78,ffffff9c,7723e95a5410,1c0) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3084
syscall(ffff800030dbd8f0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800030dbd8f0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7723e95a53d0, count: -8
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800030dbd390
rbx 0
rdx 0
rcx 0xffff800035b92a78
rax 0xffffffff83464ff0 cpu_info_full_primary+0x1ff0
r8 0xffffffffffffffff
r9 0xfffffd807f7d3548
r10 0xf4892129f543fc3b
r11 0x4014fc7f3324a9fd
r12 0x33
r13 0xffff8000134b2800
r14 0
r15 0x800
rip 0xffffffff8113ebb0 ufsdirhash_findfree+0x240
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800030dbd310
ss 0x10
ufsdirhash_findfree+0x240: movzwl 0x4(%r13),%r14d
ddb{0}> show proc
PROC (syz-executor) tid=171470 pid=71135 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=86, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800035b92058,0xffffffff83515fb0
process=0xffff80002d775b48 user=0xffff800030db8000, vmspace=0xfffffd806cf04c20
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*71135 171470 5177 0 7 0x2 syz-executor
7738 61068 84519 0 3 0x80 nanoslp syz-executor
7738 510691 84519 0 3 0x4000080 ttyout syz-executor
7738 167905 84519 0 3 0x4000080 ttyout syz-executor
7738 343216 84519 0 3 0x4000080 fsleep syz-executor
33756 142660 6562 0 2 0x480 syz-executor
33756 58079 6562 0 3 0x4000080 sbwait syz-executor
33756 2540 6562 0 3 0x4000080 fsleep syz-executor
41020 76892 61459 -1 3 0x90 nanoslp syz-executor
41020 510188 61459 -1 3 0x4000090 msgwait syz-executor
41020 105670 61459 -1 3 0x4000090 fsleep syz-executor
36771 291100 32923 0 3 0x80 nanoslp syz-executor
36771 27883 32923 0 3 0x4000080 kqread syz-executor
36771 485333 32923 0 3 0x4000080 fsleep syz-executor
6562 354412 5177 0 3 0x82 nanoslp syz-executor
84519 126070 5177 0 3 0x82 nanoslp syz-executor
61459 58314 5177 0 3 0x82 nanoslp syz-executor
32923 255473 5177 0 3 0x82 nanoslp syz-executor
67553 113946 0 0 3 0x14200 bored sosplice
17305 377147 0 0 3 0x14280 nfsidl nfsio
31883 234516 0 0 3 0x14280 nfsidl nfsio
77550 413754 0 0 3 0x14280 nfsidl nfsio
27589 369309 0 0 3 0x14280 nfsidl nfsio
56584 69577 0 0 3 0x14280 nfsidl nfsio
93469 92072 0 0 3 0x14280 nfsidl nfsio
39340 487091 0 0 3 0x14280 nfsidl nfsio
52457 189107 0 0 3 0x14280 nfsidl nfsio
43798 246724 0 0 3 0x14280 nfsidl nfsio
1062 165854 0 0 3 0x14280 nfsidl nfsio
61079 241808 0 0 3 0x14280 nfsidl nfsio
21727 49749 0 0 3 0x14280 nfsidl nfsio
47060 246490 0 0 3 0x14280 nfsidl nfsio
90839 412894 0 0 3 0x14280 nfsidl nfsio
79898 376408 0 0 3 0x14280 nfsidl nfsio
85725 473883 0 0 3 0x14280 nfsidl nfsio
66494 139327 0 0 3 0x14280 nfsidl nfsio
69573 486810 0 0 3 0x14280 nfsidl nfsio
53370 194621 0 0 3 0x14280 nfsidl nfsio
72932 342703 0 0 3 0x14280 nfsidl nfsio
5177 401221 80576 0 7 0x3 syz-executor
80576 143615 30507 0 3 0x10008a sigsusp ksh
30507 306274 88065 0 3 0x98 kqread sshd-session
88065 7366 66944 0 3 0x92 kqread sshd-session
68422 130008 1 0 3 0x100083 ttyin getty
66944 248263 1 0 3 0x88 kqread sshd
69429 146753 87170 74 3 0x1100092 bpf pflogd
87170 204436 1 0 3 0x80 sbwait pflogd
52925 243186 15286 73 3 0x1100090 kqread syslogd
15286 416623 1 0 3 0x100082 sbwait syslogd
2117 487788 1 0 3 0x100080 kqread resolvd
19342 33940 41129 77 3 0x100092 kqread dhcpleased
98177 402937 41129 77 3 0x100092 kqread dhcpleased
41129 117575 1 0 3 0x80 kqread dhcpleased
73832 142951 0 0 3 0x14200 bored smr
94774 11733 0 0 3 0x14200 pgzero zerothread
42223 484529 0 0 3 0x14200 aiodoned aiodoned
31785 424851 0 0 3 0x14200 syncer update
43428 401054 0 0 3 0x14200 cleaner cleaner
66820 141595 0 0 3 0x14200 reaper reaper
64277 356753 0 0 3 0x14200 pgdaemon pagedaemon
49553 237748 0 0 3 0x14200 bored viomb
95692 266731 0 0 3 0x40014200 acpi0 acpi0
11482 300562 0 0 3 0x40014200 idle1
31284 29203 0 0 3 0x14200 bored softnet3
42831 440472 0 0 3 0x14200 bored softnet2
45485 277622 0 0 3 0x14200 bored softnet1
33422 14073 0 0 2 0x14200 softnet0
9916 442887 0 0 3 0x14200 bored systqmp
36459 7485 0 0 3 0x14200 bored systq
33672 331061 0 0 3 0x14200 tmoslp softclockmp
84040 394421 0 0 3 0x40014200 tmoslp softclock
15453 236887 0 0 3 0x40014200 idle0
1 496663 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 71135 (syz-executor) thread 0xffff800035b92a78 (171470)
exclusive rrwlock inode r = 0 (0xfffffd807e448918)
#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:3084
#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
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83513ac8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
#2 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10227 10169K 10430K 166960K 12239 0
pcb 18 12K 12K 166960K 139 0
rtable 193 6K 8K 166960K 2461 0
pf 36 18K 22K 166960K 225 0
ifaddr 39 7K 9K 166960K 337 0
ifgroup 58 2K 2K 166960K 372 0
sysctl 2 0K 0K 166960K 4 0
counters 64 36K 36K 166960K 224 0
ioctlops 0 0K 4K 166960K 1607 0
iov 0 0K 28K 166960K 62 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1477 93K 93K 166960K 2895 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 12 0
VM map 2 1K 1K 166960K 2 0
sem 17 5K 5K 166960K 91 0
dirhash 15 2K 2K 166960K 21 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 14 46K 97K 166960K 1804 0
sigio 0 0K 0K 166960K 7 0
proc 72 91K 140K 166960K 2498 0
subproc 91 5K 7K 166960K 989 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 221 0
in_multi 85 6K 7K 166960K 873 0
ether_multi 1 0K 0K 166960K 7 0
mrt 0 0K 0K 166960K 4 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 1407 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 220 65K 91K 166960K 14353 0
UVM aobj 48 4K 4K 166960K 50 0
pinsyscall 39 78K 106K 166960K 4663 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 33 0
NDP 18 0K 1K 166960K 246 0
temp 53 6818K 6894K 166960K 65219 0
kqueue 13 20K 29K 166960K 147 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 120 246 0 243 2 1 1 2 0 8 0
rtentry 112 880 0 792 4 1 3 4 0 8 0
unpcb 144 877 0 858 15 14 1 7 0 8 0
syncache 336 8 0 8 4 4 0 1 0 8 0
tcpqe 32 5 0 5 2 2 0 1 0 8 0
tcpcb 808 300 0 292 12 10 2 7 0 8 0
arp 120 158 0 142 1 0 1 1 0 8 0
ipq 40 1 0 1 1 1 0 1 0 8 0
ipqe 40 3 0 3 1 1 0 1 0 8 0
inpcb 336 1272 0 1259 28 26 2 10 0 8 0
nd6 136 231 0 210 1 0 1 1 0 8 0
pkpcb 40 2 0 2 2 2 0 1 0 8 0
kcovpl 48 76 0 69 1 0 1 1 0 8 0
ppxss 1168 5 0 5 3 3 0 1 0 8 0
pfstscr 40 2 0 2 2 1 1 1 0 8 1
pffrag 232 7 0 4 2 1 1 1 0 482 0
pffrnode 88 7 0 4 2 1 1 1 0 8 0
pffrent 40 11 0 8 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
pfanchor 1288 1 0 0 1 0 1 1 0 8 0
pftag 88 2 0 0 1 0 1 1 0 8 0
pfstitem 24 138 0 106 1 0 1 1 0 8 0
pfstkey 128 144 0 112 2 0 2 2 0 8 0
pfstate 376 141 0 109 5 0 5 5 0 8 0
pfrule 1344 25 0 20 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 3530 0 3155 35 8 27 29 0 8 0
art_table 32 3531 0 3155 4 0 4 4 0 8 0
art_node 16 877 0 799 1 0 1 1 0 8 0
sysvmsgpl 40 13 0 10 3 2 1 1 0 8 0
semupl 112 2 0 2 2 2 0 1 0 8 0
semapl 112 87 0 72 1 0 1 1 0 8 0
shmpl 112 47 0 2 2 0 2 2 0 8 0
dirhash 1024 23 0 4 3 0 3 3 0 8 0
dino2pl 256 2861 0 1217 103 0 103 103 0 8 0
ffsino 272 2862 0 1218 110 0 110 110 0 8 0
nchpl 144 3991 0 2213 67 0 67 67 0 8 0
uvmvnodes 80 4273 0 0 88 0 88 88 0 8 0
vnodes 216 4273 0 0 238 0 238 238 0 8 0
namei 1024 20591 0 20590 7 6 1 2 0 8 0
percpumem 16 126 0 80 1 0 1 1 0 8 0
kstatmem 264 184 0 160 2 0 2 2 0 8 0
scxspl 216 41958 0 41958 11 10 1 8 1 8 1
plimitpl 152 380 0 359 1 0 1 1 0 8 0
sigapl 424 1991 0 1924 11 2 9 9 0 8 0
futexpl 64 10395 0 10391 7 6 1 1 0 8 0
knotepl 120 452 0 0 12 1 11 12 0 8 0
kqueuepl 216 325 0 315 9 7 2 5 0 8 1
pipepl 320 385 0 358 3 0 3 3 0 8 0
fdescpl 496 1952 0 1924 10 5 5 6 0 8 0
filepl 152 9871 0 9624 34 22 12 18 0 8 1
lockfpl 104 271 0 264 1 0 1 1 0 8 0
lockfspl 48 118 0 113 1 0 1 1 0 8 0
sessionpl 144 94 0 85 1 0 1 1 0 8 0
pgrppl 48 177 0 160 1 0 1 1 0 8 0
ucredpl 104 1375 0 1360 1 0 1 1 0 8 0
zombiepl 144 1927 0 1924 1 0 1 1 0 8 0
processpl 1160 1991 0 1924 7 1 6 6 0 8 0
procpl 648 3142 0 3066 12 4 8 8 0 8 0
srpgc 96 2 0 2 2 2 0 1 0 8 0
sosppl 168 3 0 3 1 1 0 1 0 8 0
sockpl 664 2405 0 2370 49 45 4 20 0 8 0
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 6 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 268 0 0 32 2 30 32 0 8 0
mtagpl 96 11 0 0 1 0 1 1 0 8 0
mbufpl 256 619 0 0 36 0 36 36 0 8 0
bufpl 280 10023 0 3239 485 0 485 485 0 8 0
anonpl 24 316887 0 311745 114 54 60 75 0 185 17
amapchunkpl 152 44748 0 44232 48 14 34 35 0 158 10
amappl16 200 5734 0 5686 76 60 16 21 0 8 9
amappl15 192 7 0 7 1 1 0 1 0 8 0
amappl14 184 256 0 244 1 0 1 1 0 8 0
amappl13 176 10 0 10 1 1 0 1 0 8 0
amappl12 168 3685 0 3658 4 2 2 3 0 8 0
amappl11 160 70 0 56 1 0 1 1 0 8 0
amappl10 152 9 0 9 1 1 0 1 0 8 0
amappl9 144 121 0 121 1 1 0 1 0 8 0
amappl8 136 25 0 22 1 0 1 1 0 8 0
amappl7 128 246 0 232 1 0 1 1 0 8 0
amappl6 120 846 0 844 1 0 1 1 0 8 0
amappl5 112 409 0 397 1 0 1 1 0 8 0
amappl4 104 524 0 503 1 0 1 1 0 8 0
amappl3 96 8480 0 8385 6 2 4 4 0 8 1
amappl2 88 1674 0 1606 2 0 2 2 0 8 0
amappl1 80 17574 0 17016 15 1 14 14 0 8 0
amappl 88 13397 0 13239 7 2 5 5 0 92 0
dma32768 32768 1 0 1 1 1 0 1 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
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 49 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1953 0 1925 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1953 0 1925 1 0 1 1 0 8 0
vmmpekpl 168 17791 0 17730 4 0 4 4 0 8 0
vmmpepl 168 127700 0 125974 135 38 97 100 0 357 9
vmsppl 440 1952 0 1925 6 2 4 5 0 8 0
rwobjpl 56 42621 0 37361 85 6 79 79 0 8 2
pdppl 4096 3913 0 3850 191 114 77 87 0 8 14
pvpl 32 31781 0 0 256 0 256 256 0 265 0
pmappl 248 1952 0 1925 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 574 0 176 12 0 12 12 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
ufsdirhash_findfree(fffffd807e448880,1c,ffff800030dbd404) at ufsdirhash_findfree+0x240 sys/ufs/ufs/ufs_dirhash.c:517
ufs_lookup() at ufs_lookup+0xdfb sys/ufs/ufs/ufs_lookup.c:202
VOP_LOOKUP(fffffd806ee2fc00,ffff800030dbd740,ffff800030dbd770) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff800030dbd710) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff800030dbd710) at namei+0x7aa sys/kern/vfs_lookup.c:250
domkdirat(ffff800035b92a78,ffffff9c,7723e95a5410,1c0) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3084
syscall(ffff800030dbd8f0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800030dbd8f0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7723e95a53d0, count: -8
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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:164
ktrgenio(ffff800029fd8f38,31,0,ffff800000a444c0,1d) at ktrgenio+0x238 sys/kern/kern_ktrace.c:258
dofilereadv(ffff800029fd8f38,31,ffff80002a03c658,0,ffff80002a03c710) at dofilereadv+0x42f sys/kern/sys_generic.c:268
sys_read(ffff800029fd8f38,ffff80002a03c7c0,ffff80002a03c710) at sys_read+0xa2 sys/kern/sys_generic.c:172
syscall(ffff80002a03c7c0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a03c7c0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7cdcf23bbe40, count: 6
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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:164
ktrgenio(ffff800029fd8f38,31,0,ffff800000a444c0,1d) at ktrgenio+0x238 sys/kern/kern_ktrace.c:258
dofilereadv(ffff800029fd8f38,31,ffff80002a03c658,0,ffff80002a03c710) at dofilereadv+0x42f sys/kern/sys_generic.c:268
sys_read(ffff800029fd8f38,ffff80002a03c7c0,ffff80002a03c710) at sys_read+0xa2 sys/kern/sys_generic.c:172
syscall(ffff80002a03c7c0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a03c7c0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7cdcf23bbe40, count: -9