uvm_fault(0xfffffd806af647a0, 0x48, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
131142 29248 0 0 0 0 syz-executor
*440504 64848 0 0 0x4000000 1K syz-executor
witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779
mtx_enter(18) at mtx_enter+0x47 sys/kern/kern_lock.c:238
clockintr_unbind(ffff8000015c6c30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c419170) at spec_close+0x45f sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd80784ab870,81,fffffd807f7d2680,ffff8000ffff2010) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd8069b62608,ffff8000ffff2010) at fdrop+0x126 sys/kern/kern_descrip.c:1267
closef(fffffd8069b62608,ffff8000ffff2010) at closef+0x192 sys/kern/kern_descrip.c:1251
syscall(ffff80003c4193d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4193d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa18c2b1c3d0, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806af647a0, 0x48, 0, 1) -> e
ddb{1}> trace
witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779
mtx_enter(18) at mtx_enter+0x47 sys/kern/kern_lock.c:238
clockintr_unbind(ffff8000015c6c30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c419170) at spec_close+0x45f sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd80784ab870,81,fffffd807f7d2680,ffff8000ffff2010) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd8069b62608,ffff8000ffff2010) at fdrop+0x126 sys/kern/kern_descrip.c:1267
closef(fffffd8069b62608,ffff8000ffff2010) at closef+0x192 sys/kern/kern_descrip.c:1251
syscall(ffff80003c4193d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4193d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa18c2b1c3d0, count: -12
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80003c418fe0
rbx 0
rdx 0xffff800001496900
rcx 0xffff8000ffff2010
rax 0xffff8000299ddff0
r8 0xffffffff822f7620 uvm_map_inentry_sp
r9 0
r10 0
r11 0x2d8f09fda6be336d
r12 0
r13 0x1
r14 0x28
r15 0x3
rip 0xffffffff81ee8829 witness_checkorder+0xa9
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80003c418f30
ss 0x10
witness_checkorder+0xa9: movl 0x20(%r14),%r15d
ddb{1}> show proc
PROC (syz-executor) tid=440504 pid=64848 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffff2f70,0xffff8000ffff0550
process=0xffff80003a810990 user=0xffff80003c414000, vmspace=0xfffffd806af647a0
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
42888 96785 66509 0 2 0 syz-executor
42888 408626 66509 0 2 0x4000000 syz-executor
42888 468050 66509 0 3 0x4000080 fsleep syz-executor
42888 281940 66509 0 3 0x4000080 fsleep syz-executor
29248 131142 87527 0 7 0 syz-executor
29248 177783 87527 0 2 0x4000000 syz-executor
27752 437131 71166 0 2 0 syz-executor
27752 95678 71166 0 3 0x4000080 fsleep syz-executor
27752 379190 71166 0 3 0x4000080 fsleep syz-executor
27752 511974 71166 0 3 0x4000080 fsleep syz-executor
64848 344072 76141 0 2 0 syz-executor
*64848 440504 76141 0 7 0x4000000 syz-executor
96470 194630 98726 0 2 0 syz-executor
96470 27766 98726 0 3 0x4000080 msgwait syz-executor
789 438011 95450 0 3 0x80 nanoslp syz-executor
789 328763 95450 0 3 0x4000080 fsleep syz-executor
789 509794 95450 0 3 0x4000080 fifor syz-executor
789 129237 95450 0 3 0x4000080 fsleep syz-executor
80759 416543 90150 0 3 0x80 nanoslp syz-executor
80759 138038 90150 0 3 0x4000080 kqread syz-executor
80759 221389 90150 0 3 0x4000080 fsleep syz-executor
76141 509180 83948 0 3 0x82 nanoslp syz-executor
71166 291278 83948 0 3 0x82 nanoslp syz-executor
31595 494745 0 0 3 0x14200 acct acct
69396 154530 0 0 3 0x14200 bored sosplice
79383 131779 14932 0 3 0x100082 sbwait arp
14932 380915 58379 0 3 0x10008a sigsusp sh
90150 277822 83948 0 3 0x82 nanoslp syz-executor
95450 416693 83948 0 3 0x82 nanoslp syz-executor
87527 444736 83948 0 3 0x82 nanoslp syz-executor
98726 48536 83948 0 3 0x82 nanoslp syz-executor
66509 54764 83948 0 3 0x82 nanoslp syz-executor
58379 190149 83948 0 3 0x82 wait syz-executor
83948 167438 81049 0 2 0x2 syz-executor
81049 206086 23879 0 3 0x10008a sigsusp ksh
23879 505937 65579 0 3 0x98 kqread sshd-session
65579 129889 79792 0 3 0x92 kqread sshd-session
21059 357300 1 0 3 0x100083 ttyin getty
79792 119848 1 0 3 0x88 kqread sshd
54717 382972 16744 74 3 0x1100092 bpf pflogd
16744 256348 1 0 3 0x80 sbwait pflogd
14722 429530 30046 73 3 0x1100090 kqread syslogd
30046 430217 1 0 3 0x100082 sbwait syslogd
25877 423863 1 0 3 0x100080 kqread resolvd
74374 411542 74623 77 3 0x100092 kqread dhcpleased
12623 303830 74623 77 3 0x100092 kqread dhcpleased
74623 154048 1 0 3 0x80 kqread dhcpleased
87519 26902 0 0 3 0x14200 bored smr
56444 96063 0 0 2 0x14200 zerothread
18872 98753 0 0 3 0x14200 aiodoned aiodoned
65153 366338 0 0 3 0x14200 syncer update
5350 372855 0 0 3 0x14200 cleaner cleaner
62235 465928 0 0 3 0x14200 reaper reaper
91293 464401 0 0 3 0x14200 pgdaemon pagedaemon
88681 507325 0 0 3 0x14200 bored viomb
21176 457647 0 0 3 0x40014200 acpi0 acpi0
93456 138131 0 0 3 0x40014200 idle1
36870 58172 0 0 3 0x14200 bored softnet3
70084 103198 0 0 3 0x14200 bored softnet2
16536 116310 0 0 3 0x14200 bored softnet1
95645 472364 0 0 3 0x14200 bored softnet0
57861 56965 0 0 3 0x14200 bored systqmp
58875 478794 0 0 3 0x14200 bored systq
13873 115456 0 0 3 0x14200 tmoslp softclockmp
85430 300267 0 0 3 0x40014200 tmoslp softclock
49663 61350 0 0 3 0x40014200 idle0
1 220345 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 64848 (syz-executor) thread 0xffff8000ffff2010 (440504)
exclusive rwlock dtlk r = 0 (0xffffffff83828a28)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311
#2 dt_ioctl_record_stop+0x68 sys/dev/dt/dt_dev.c:-1
#3 dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
#3 dtclose+0x105 sys/dev/dt/dt_dev.c:232
#4 spec_close+0x45f sys/kern/spec_vnops.c:-1
#5 VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
#6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
#6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615
#7 fdrop+0x126 sys/kern/kern_descrip.c:1267
#8 closef+0x192 sys/kern/kern_descrip.c:1251
#9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
#10 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838d47b0)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608
#2 fdrop+0x126 sys/kern/kern_descrip.c:1267
#3 closef+0x192 sys/kern/kern_descrip.c:1251
#4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
#5 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10220 11063K 11763K 166960K 12643 0
pcb 84 16K 16K 166960K 199 0
rtable 167 7K 7K 166960K 506 0
pf 37 18K 21K 166960K 108 0
ifaddr 34 5K 7K 166960K 79 0
ifgroup 59 2K 2K 166960K 130 0
sysctl 2 1K 9K 166960K 8 0
counters 68 36K 37K 166960K 116 0
ioctlops 0 0K 4K 166960K 1599 0
iov 0 0K 16K 166960K 35 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1438 90K 91K 166960K 2209 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 17 5K 6K 166960K 34 0
dirhash 12 2K 2K 166960K 33 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 19 69K 114K 166960K 875 0
sigio 0 0K 0K 166960K 11 0
proc 72 91K 128K 166960K 673 0
subproc 72 4K 4K 166960K 99 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 1 0K 0K 166960K 226 0
in_multi 55 4K 6K 166960K 138 0
ether_multi 1 0K 0K 166960K 7 0
mrt 0 0K 0K 166960K 7 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 79 360K 360K 166960K 79 0
exec 0 0K 1K 166960K 574 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 2 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 262 171K 180K 166960K 9426 0
UVM aobj 12 2K 2K 166960K 14 0
pinsyscall 45 90K 103K 166960K 2058 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 37 0
NDP 13 0K 1K 166960K 52 0
temp 54 8674K 8748K 166960K 31089 0
kqueue 14 22K 30K 166960K 155 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 26 0 0 1 0 1 1 0 8 0
rtpcb 120 156 0 152 2 1 1 2 0 8 0
rtentry 176 149 0 79 5 0 5 5 0 8 0
unpcb 144 700 0 681 6 5 1 6 0 8 0
syncache 336 5 0 5 2 2 0 1 0 8 0
tcpqe 32 1 0 1 1 1 0 1 0 8 0
tcpcb 808 373 0 367 16 7 9 14 0 8 8
arp 128 25 0 9 1 0 1 1 0 8 0
inpcb 384 1175 0 1096 13 5 8 8 0 8 0
nd6 144 31 0 17 1 0 1 1 0 8 0
pkpcb 40 9 0 9 2 1 1 1 0 8 1
kcovpl 48 11 0 3 1 0 1 1 0 8 0
ppxss 1192 13 0 13 2 1 1 1 0 8 1
pppxif 1504 3 0 3 2 1 1 1 0 8 1
pffrag 232 9 0 2 1 0 1 1 0 482 0
pffrnode 88 6 0 0 1 0 1 1 0 8 0
pffrent 40 13 0 6 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
pfanchor 1288 4 0 0 1 0 1 1 0 8 0
pfstitem 24 73 0 12 1 0 1 1 0 8 0
pfstkey 128 73 0 12 3 0 3 3 0 8 0
pfstate 384 73 0 12 7 0 7 7 0 8 0
pfrule 1344 24 0 16 2 0 2 2 0 8 0
art_heap8 4096 4 0 0 4 0 4 4 0 8 0
art_heap4 256 589 0 317 27 9 18 27 0 8 0
art_table 32 593 0 317 4 0 4 4 0 8 0
art_node 16 147 0 83 1 0 1 1 0 8 0
sysvmsgpl 40 19 0 6 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 26 0 11 1 0 1 1 0 8 0
shmpl 112 11 0 2 1 0 1 1 0 8 0
dirhash 1024 31 0 14 3 0 3 3 0 8 0
dino2pl 256 2824 0 1309 96 0 96 96 0 8 0
ffsino 288 2824 0 1309 109 0 109 109 0 8 0
nchpl 144 3990 0 2295 64 0 64 64 0 8 0
uvmvnodes 80 3524 0 0 72 0 72 72 0 8 0
vnodes 216 3524 0 0 196 0 196 196 0 8 0
namei 1024 14046 0 14046 1 0 1 1 0 8 1
percpumem 16 73 0 24 1 0 1 1 0 8 0
kstatmem 264 68 0 38 4 1 3 3 0 8 1
acpiwqpl 32 2 0 2 1 0 1 1 1 8 1
scsiplug 72 6 0 6 2 1 1 1 0 8 1
scxspl 216 12799 0 12799 10 7 3 8 1 8 3
plimitpl 152 173 0 154 1 0 1 1 0 8 0
sigapl 424 1174 0 1121 7 0 7 7 0 8 0
knotepl 120 594 0 0 18 0 18 18 0 8 0
kqueuepl 224 229 0 219 2 0 2 2 0 8 1
pipepl 336 177 0 150 3 0 3 3 0 8 0
fdescpl 520 1154 0 1121 3 0 3 3 0 8 0
filepl 160 7136 0 6849 17 4 13 17 0 8 0
lockfpl 104 394 0 391 2 0 2 2 0 8 1
lockfspl 48 146 0 143 1 0 1 1 0 8 0
sessionpl 144 27 0 18 1 0 1 1 0 8 0
pgrppl 48 47 0 30 1 0 1 1 0 8 0
ucredpl 104 1076 0 1063 1 0 1 1 0 8 0
zombiepl 144 1121 0 1121 1 0 1 1 0 8 1
processpl 1208 1174 0 1121 5 0 5 5 0 8 0
procpl 656 2321 0 2254 6 0 6 6 0 8 0
srpgc 96 8 0 8 1 0 1 1 0 8 1
sosppl 168 4 0 4 2 1 1 1 0 8 1
sockpl 728 2053 0 1950 18 8 10 16 0 8 0
mcl64k 65536 4 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 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 115 0 0 15 0 15 15 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 34 0 0 5 1 4 5 0 8 0
mtagpl 96 61 0 0 2 0 2 2 0 8 0
mbufpl 256 230 0 0 14 0 14 14 0 8 0
bufpl 280 3975 0 125 275 0 275 275 0 8 0
anonpl 32 8538 0 0 69 0 69 69 0 246 0
amapchunkpl 152 30614 0 30061 37 5 32 32 0 158 7
amappl16 200 2665 0 2632 7 3 4 5 0 8 0
amappl15 192 8 0 8 2 2 0 1 0 8 0
amappl14 184 129 0 116 1 0 1 1 0 8 0
amappl13 176 2 0 2 2 1 1 1 0 8 1
amappl12 168 1850 0 1816 3 1 2 2 0 8 0
amappl11 160 55 0 41 1 0 1 1 0 8 0
amappl10 152 7 0 7 1 1 0 1 0 8 0
amappl9 144 246 0 246 1 1 0 1 0 8 0
amappl8 136 55 0 52 1 0 1 1 0 8 0
amappl7 128 138 0 125 1 0 1 1 0 8 0
amappl6 120 212 0 207 1 0 1 1 0 8 0
amappl5 112 134 0 124 1 0 1 1 0 8 0
amappl4 104 356 0 333 1 0 1 1 0 8 0
amappl3 96 6015 0 5895 4 0 4 4 0 8 0
amappl2 88 701 0 636 2 0 2 2 0 8 0
amappl1 80 11842 0 11209 16 1 15 15 0 8 0
amappl 88 8545 0 8362 5 0 5 5 0 92 0
dma32768 32768 1 0 1 1 1 0 1 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 2 0 1 1 0 1 1 0 8 0
dma256 256 7 0 7 2 1 1 1 0 8 1
dma128 128 255 0 255 2 2 0 1 0 8 0
dma64 64 7 0 7 2 2 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 13 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1154 0 1121 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1154 0 1121 1 0 1 1 0 8 0
vmmpekpl 168 10277 0 10228 3 0 3 3 0 8 0
vmmpepl 168 76453 0 74365 97 4 93 95 0 357 2
vmsppl 480 1153 0 1121 5 0 5 5 0 8 0
rwobjpl 72 24789 0 20257 83 0 83 83 0 8 0
pdppl 4096 2316 0 2242 110 34 76 84 0 8 2
pvpl 32 18305 0 0 149 1 148 148 0 265 0
pmappl 256 1153 0 1121 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 416 0 56 11 0 11 11 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff837d7ff0) 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
__mp_lock(ffffffff838d45a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838d45a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144
softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x751fdfdedb60, count: 8
ddb{0}> trace
x86_ipi_db(ffffffff837d7ff0) 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
__mp_lock(ffffffff838d45a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff838d45a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144
softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x751fdfdedb60, count: -7
ddb{0}> machine ddbcpu 1
Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d
witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779
mtx_enter(18) at mtx_enter+0x47 sys/kern/kern_lock.c:238
clockintr_unbind(ffff8000015c6c30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c419170) at spec_close+0x45f sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd80784ab870,81,fffffd807f7d2680,ffff8000ffff2010) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd8069b62608,ffff8000ffff2010) at fdrop+0x126 sys/kern/kern_descrip.c:1267
closef(fffffd8069b62608,ffff8000ffff2010) at closef+0x192 sys/kern/kern_descrip.c:1251
syscall(ffff80003c4193d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4193d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa18c2b1c3d0, count: 3
ddb{1}> trace
witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779
mtx_enter(18) at mtx_enter+0x47 sys/kern/kern_lock.c:238
clockintr_unbind(ffff8000015c6c30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375
dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff8000ffff2010) at dtclose+0x105 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c419170) at spec_close+0x45f sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd80784ab870,81,fffffd807f7d2680,ffff8000ffff2010) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd8069b62608,ffff8000ffff2010) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd8069b62608,ffff8000ffff2010) at fdrop+0x126 sys/kern/kern_descrip.c:1267
closef(fffffd8069b62608,ffff8000ffff2010) at closef+0x192 sys/kern/kern_descrip.c:1251
syscall(ffff80003c4193d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4193d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa18c2b1c3d0, count: -12