uvm_fault(fffffd8067dcd210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c42bc60,200000000080) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c42bc60) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c0a107616b0, count: 2
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: mtx 0xffffffff83943e50: locking against myself
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833f3da0) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_enter_try(ffffffff83943e50) at mtx_enter_try+0x1da sys/kern/kern_lock.c:285
mtx_enter(ffffffff83943e50) at mtx_enter+0x62 sys/kern/kern_lock.c:253
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline]
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980
uvm_pagefree(fffffd80082757f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvn_get(fffffd8067db8710,0,ffff80003c42b8b8,ffff80003c42b89c,0,2,af20da2b105f7905,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118
uvm_fault_lower_io(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42b950,ffff80003c42b938) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
uvm_fault_lower(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42ba50) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
uvm_fault(fffffd8067dcd210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c42bc60,200000000080) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c42bc60) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c0a107616b0, count: -13
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003c42b5f0
rbx 0xffff8000299dedd7
rdx 0
rcx 0xffff80003c444028
rax 0xffff8000299ddff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xf5560303d88dc510
r11 0xc4c56ba18ba08c66
r12 0xffff8000299debd8
r13 0
r14 0
r15 0x1
rip 0xffffffff81ba9385 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003c42b5e0
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=52146 pid=94869 tcnt=4 stat=onproc
flags process=10<SUGID> proc=0
runpri=50, usrpri=50, slppri=36, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c445c58,0xffff80003c444558
process=0xffff8000fffec9c8 user=0xffff80003c426000, vmspace=0xfffffd8067dcd210
estcpu=4, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
86894 299679 93601 0 2 0x40 syz-executor
18840 158883 39262 32767 2 0x10 syz-executor
18840 236192 39262 32767 3 0x4000090 fsleep syz-executor
19701 227641 14071 0 2 0x100002 sh
*94869 52146 65330 32767 7 0x10 syz-executor
94869 165182 65330 32767 7 0x4000010 syz-executor
94869 267656 65330 32767 3 0x4000010 biowait syz-executor
94869 507919 65330 32767 3 0x4000090 fsleep syz-executor
50454 433513 13857 32767 2 0x10 syz-executor
50454 116791 13857 32767 3 0x4000090 fsleep syz-executor
50454 40958 13857 32767 2 0x4000010 syz-executor
6547 289406 94886 32767 2 0x10 syz-executor
6547 330494 94886 32767 3 0x4000090 fsleep syz-executor
6547 338692 94886 32767 3 0x4000090 fsleep syz-executor
50574 145821 15430 32767 2 0x10 syz-executor
50574 472032 15430 32767 3 0x4000090 kqread syz-executor
60455 432122 84999 32767 2 0x10 syz-executor
60455 484163 84999 32767 3 0x4000090 fsleep syz-executor
13857 516805 66886 32767 3 0x90 nanoslp syz-executor
65330 397503 15157 32767 3 0x90 nanoslp syz-executor
93601 8291 5781 0 3 0x80 ppwait syz-executor
14071 376686 68257 0 3 0x80 wait syz-executor
94886 455150 67542 32767 3 0x90 nanoslp syz-executor
84999 133738 39802 32767 3 0x90 nanoslp syz-executor
15430 346023 58272 32767 3 0x90 nanoslp syz-executor
39262 326923 86995 32767 3 0x90 nanoslp syz-executor
66886 195174 17736 0 3 0x82 wait syz-executor
15157 38308 17736 0 3 0x82 wait syz-executor
5781 338424 17736 0 3 0x82 wait syz-executor
68257 122712 17736 0 3 0x82 wait syz-executor
39802 190528 17736 0 3 0x82 wait syz-executor
67542 510609 17736 0 3 0x82 wait syz-executor
86995 186011 17736 0 3 0x82 wait syz-executor
58272 88903 17736 0 3 0x82 wait syz-executor
17736 429861 64990 0 3 0x82 kqread syz-executor
64990 473659 31657 0 3 0x10008a sigsusp ksh
31657 239798 26459 0 3 0x98 kqread sshd-session
26459 42139 80654 0 3 0x92 kqread sshd-session
63441 319933 1 0 3 0x100083 ttyin getty
80654 487180 1 0 3 0x88 kqread sshd
25626 436396 77201 73 3 0x1100090 kqread syslogd
77201 3200 1 0 3 0x100082 sbwait syslogd
26615 295250 1 0 3 0x100080 kqread resolvd
16517 78970 86768 77 3 0x100092 kqread dhcpleased
73346 478900 86768 77 3 0x100092 kqread dhcpleased
86768 192897 1 0 3 0x80 kqread dhcpleased
31588 455794 0 0 3 0x14200 bored smr
19736 297429 0 0 2 0x14200 zerothread
12634 70888 0 0 3 0x14200 aiodoned aiodoned
90178 479479 0 0 3 0x14200 syncer update
819 29462 0 0 3 0x14200 cleaner cleaner
36847 1288 0 0 3 0x14200 reaper reaper
54386 306739 0 0 3 0x14200 pgdaemon pagedaemon
80473 200851 0 0 3 0x14200 bored viomb
99910 422620 0 0 3 0x40014200 acpi0 acpi0
68491 493468 0 0 3 0x40014200 idle1
40960 115151 0 0 3 0x14200 bored softnet3
56712 339477 0 0 3 0x14200 bored softnet2
26034 12103 0 0 3 0x14200 bored softnet1
48830 360169 0 0 3 0x14200 bored softnet0
98321 127948 0 0 3 0x14200 bored systqmp
50776 323577 0 0 3 0x14200 bored systq
90763 501858 0 0 3 0x14200 tmoslp softclockmp
71005 424270 0 0 3 0x40014200 tmoslp softclock
34118 426513 0 0 3 0x40014200 idle0
1 399189 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex &sched_lock r = 0 (0xffffffff83974948)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:296
#2 mtx_enter+0x62 sys/kern/kern_lock.c:253
#3 sleep_setup+0xc6 sys/kern/kern_synch.c:302
#4 sys_futex+0xa04 futex_wait sys/kern/sys_futex.c:301 [inline]
#4 sys_futex+0xa04 sys/kern/sys_futex.c:151
#5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
#6 Xsyscall+0x128
CPU 1:
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83943e60)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:296
#2 mtx_enter+0x62 sys/kern/kern_lock.c:253
#3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117
#4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
#5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
#6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
#7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#9 recall_trap+0x8
Process 94869 (syz-executor) thread 0xffff80003c444028 (52146)
exclusive rwlock uobjlk r = 0 (0xfffffd80647a0a00)
#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+0x377 sys/kern/kern_rwlock.c:310
#2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297
#3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102
#4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
#5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
#6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
#7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#9 recall_trap+0x8
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83943e60)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:296
#2 mtx_enter+0x62 sys/kern/kern_lock.c:253
#3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117
#4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
#5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
#6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
#7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#9 recall_trap+0x8
Process 94869 (syz-executor) thread 0xffff80003c444f88 (267656)
exclusive rrwlock inode r = 0 (0xfffffd806be7d560)
#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+0x377 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2912
#6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10182 10954K 10966K 166960K 11259 0
pcb 17 12K 12K 166960K 17 0
rtable 210 6K 6K 166960K 317 0
pf 31 16K 16K 166960K 31 0
ifaddr 39 6K 6K 166960K 41 0
ifgroup 50 2K 2K 166960K 50 0
sysctl 1 1K 9K 166960K 5 0
counters 68 36K 36K 166960K 68 0
ioctlops 0 0K 2K 166960K 28 0
iov 0 0K 1K 166960K 1 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1334 84K 84K 166960K 1350 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 1K 166960K 2 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 26 97K 129K 166960K 140 0
proc 58 79K 115K 166960K 459 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 1 0
in_multi 88 6K 6K 166960K 88 0
ether_multi 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 25 122K 122K 166960K 25 0
exec 0 0K 1K 166960K 340 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 253 169K 178K 166960K 2725 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 47 94K 112K 166960K 1158 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 25 1K 1K 166960K 25 0
temp 35 8678K 8742K 166960K 3756 0
kqueue 14 22K 22K 166960K 23 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 36 0 32 1 0 1 1 0 8 0
rtentry 176 99 0 1 5 0 5 5 0 8 0
unpcb 144 31 0 16 1 0 1 1 0 8 0
syncache 336 3 0 3 1 0 1 1 0 8 1
tcpcb 808 11 0 4 1 0 1 1 0 8 0
arp 128 16 0 0 1 0 1 1 0 8 0
ipq 40 1 0 0 1 0 1 1 0 8 0
ipqe 40 1 0 0 1 0 1 1 0 8 0
inpcb 328 64 0 53 1 0 1 1 0 8 0
nd6 144 20 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 407 0 0 26 0 26 26 0 8 0
art_table 32 408 0 0 4 0 4 4 0 8 0
art_node 16 98 0 9 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1546 0 45 94 0 94 94 0 8 0
ffsino 288 1546 0 45 108 0 108 108 0 8 0
nchpl 144 1732 0 56 63 0 63 63 0 8 0
uvmvnodes 80 1627 0 0 34 0 34 34 0 8 0
vnodes 216 1627 0 0 91 0 91 91 0 8 0
namei 1024 5033 0 5033 2 0 2 2 0 8 2
percpumem 16 49 0 0 1 0 1 1 0 8 0
kstatmem 264 24 0 0 2 0 2 2 0 8 0
scxspl 216 5758 0 5756 4 1 3 3 1 8 2
plimitpl 152 34 0 10 1 0 1 1 0 8 0
sigapl 424 424 0 368 8 0 8 8 0 8 1
knotepl 120 86 0 0 3 0 3 3 0 8 0
kqueuepl 224 19 0 9 1 0 1 1 0 8 0
pipepl 336 100 0 73 3 0 3 3 0 8 0
fdescpl 520 406 0 368 4 0 4 4 0 8 0
filepl 160 1308 0 1098 9 0 9 9 0 8 0
lockfpl 104 7 0 4 1 0 1 1 0 8 0
lockfspl 48 5 0 2 1 0 1 1 0 8 0
sessionpl 144 21 0 5 1 0 1 1 0 8 0
pgrppl 48 29 0 5 1 0 1 1 0 8 0
ucredpl 104 81 0 64 1 0 1 1 0 8 0
zombiepl 144 368 0 368 1 0 1 1 0 8 1
processpl 1240 424 0 368 5 0 5 5 0 8 0
procpl 656 442 0 376 6 0 6 6 0 8 0
sockpl 728 131 0 99 3 0 3 3 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 109 0 0 14 0 14 14 0 8 0
mcl2k 2048 16 0 0 2 0 2 2 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 209 0 0 14 0 14 14 0 8 0
bufpl 280 2225 0 116 151 0 151 151 0 8 0
anonpl 32 3831 0 0 31 0 31 31 0 246 0
amapchunkpl 152 7870 0 7322 22 0 22 22 0 158 0
amappl16 200 2140 0 2125 5 0 5 5 0 8 4
amappl15 192 4 0 4 1 0 1 1 0 8 1
amappl14 184 155 0 145 1 0 1 1 0 8 0
amappl13 176 8 0 7 1 0 1 1 0 8 0
amappl12 168 1016 0 980 3 0 3 3 0 8 1
amappl11 160 42 0 32 1 0 1 1 0 8 0
amappl10 152 39 0 39 1 0 1 1 0 8 1
amappl9 144 260 0 260 1 0 1 1 0 8 1
amappl8 136 43 0 42 1 0 1 1 0 8 0
amappl7 128 113 0 103 1 0 1 1 0 8 0
amappl6 120 171 0 167 1 0 1 1 0 8 0
amappl5 112 131 0 124 1 0 1 1 0 8 0
amappl4 104 291 0 276 1 0 1 1 0 8 0
amappl3 96 1217 0 1088 4 0 4 4 0 8 0
amappl2 88 594 0 542 2 0 2 2 0 8 0
amappl1 80 8015 0 7438 14 0 14 14 0 8 1
amappl 88 2101 0 1914 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 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 406 0 368 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 406 0 368 1 0 1 1 0 8 0
vmmpekpl 168 4905 0 4878 2 0 2 2 0 8 0
vmmpepl 168 33129 0 31012 95 1 94 94 0 357 0
vmsppl 480 405 0 368 7 1 6 6 0 8 0
rwobjpl 72 13853 0 11370 48 0 48 48 0 8 0
pdppl 4096 820 0 736 114 14 100 100 0 8 16
pvpl 32 9124 0 0 74 0 74 74 0 265 0
pmappl 256 405 0 368 4 1 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 391 0 17 11 0 11 11 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff837f0ff0) 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
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68
savectx() at savectx+0xae
end of kernel
end trace frame: 0xdc2ff96f600, count: 10
ddb{0}> trace
x86_ipi_db(ffffffff837f0ff0) 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
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68
savectx() at savectx+0xae
end of kernel
end trace frame: 0xdc2ff96f600, count: -5
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(ffffffff833f3da0) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_enter_try(ffffffff83943e50) at mtx_enter_try+0x1da sys/kern/kern_lock.c:285
mtx_enter(ffffffff83943e50) at mtx_enter+0x62 sys/kern/kern_lock.c:253
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline]
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980
uvm_pagefree(fffffd80082757f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvn_get(fffffd8067db8710,0,ffff80003c42b8b8,ffff80003c42b89c,0,2,af20da2b105f7905,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118
uvm_fault_lower_io(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42b950,ffff80003c42b938) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
uvm_fault_lower(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42ba50) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
uvm_fault(fffffd8067dcd210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c42bc60,200000000080) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c42bc60) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c0a107616b0, count: 2
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833f3da0) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_enter_try(ffffffff83943e50) at mtx_enter_try+0x1da sys/kern/kern_lock.c:285
mtx_enter(ffffffff83943e50) at mtx_enter+0x62 sys/kern/kern_lock.c:253
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline]
uvm_pageclean(fffffd80082757f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980
uvm_pagefree(fffffd80082757f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvn_get(fffffd8067db8710,0,ffff80003c42b8b8,ffff80003c42b89c,0,2,af20da2b105f7905,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118
uvm_fault_lower_io(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42b950,ffff80003c42b938) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652
uvm_fault_lower(ffff80003c42bad0,ffff80003c42bb08,ffff80003c42ba50) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419
uvm_fault(fffffd8067dcd210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c42bc60,200000000080) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c42bc60) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c0a107616b0, count: -13