uvm_fault(0xfffffd807262dcf8, 0x668, 0, 2) -> e
kernel: page fault trap, code=0
Stopped at pppacopen+0x1b5: movq %r13,0x668
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*370915 7255 0 0 0x4000000 0K syz-executor.0
493706 7007 0 0x14000 0x200 1 reaper
pppacopen(408633c,2,2000,ffff800021254540) at pppacopen+0x1b5 sys/net/if_pppx.c:1020
spec_open(ffff8000246cc698) at spec_open+0x3d7 sys/kern/spec_vnops.c:157
VOP_OPEN(fffffd80680a2bf8,2,fffffd807f7d77e0,ffff800021254540) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138
vn_open(ffff8000246cc8e8,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183
doopenat(ffff800021254540,ffffff9c,20000400,1,0,ffff8000246ccad0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128
syscall(ffff8000246ccb40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000246ccb40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1ef2009fd10, count: 8
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(0xfffffd807262dcf8, 0x668, 0, 2) -> e
ddb{0}> trace
pppacopen(408633c,2,2000,ffff800021254540) at pppacopen+0x1b5 sys/net/if_pppx.c:1020
spec_open(ffff8000246cc698) at spec_open+0x3d7 sys/kern/spec_vnops.c:157
VOP_OPEN(fffffd80680a2bf8,2,fffffd807f7d77e0,ffff800021254540) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138
vn_open(ffff8000246cc8e8,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183
doopenat(ffff800021254540,ffffff9c,20000400,1,0,ffff8000246ccad0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128
syscall(ffff8000246ccb40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000246ccb40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1ef2009fd10, count: -7
ddb{0}> show registers
rdi 0xffff800023ab7000
rsi 0xc35
rbp 0xffff8000246cc610
rbx 0
rdx 0xffff800023ab7000
rcx 0xc34
rax 0xffffffff81c79ee5 pppacopen+0x1b5
r8 0x770
r9 0xfffffd807f7d77e0
r10 0x28107f04655178c
r11 0x77657041e50cf0f6
r12 0xfffffd80680a2bf8
r13 0
r14 0x408633c __kernel_phys_end+0x148633c
r15 0xffff8000246cc698
rip 0xffffffff81c79ee5 pppacopen+0x1b5
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000246cc5c0
ss 0
pppacopen+0x1b5: movq %r13,0x668
ddb{0}> show proc
PROC (syz-executor.0) pid=370915 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=17, usrpri=78, nice=20
forw=0xffffffffffffffff, list=0xffff800021254a80,0xffffffff8293ceb0
process=0xffff8000211f1d28 user=0xffff8000246c7000, vmspace=0xfffffd807262dcf8
estcpu=28, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
93605 353998 30306 0 2 0 syz-executor.1
93605 181448 30306 0 3 0x4000080 fsleep syz-executor.1
7255 168469 21512 0 2 0 syz-executor.0
* 7255 370915 21512 0 7 0x4000000 syz-executor.0
21512 388384 21684 0 2 0x482 syz-executor.0
77509 506218 21684 0 2 0x482 syz-executor.3
37028 451762 0 0 3 0x14200 bored sosplice
33194 197873 1 0 3 0x100083 ttyin getty
27818 252139 21684 0 2 0x2 syz-executor.2
30306 421991 21684 0 2 0x482 syz-executor.1
21684 236907 89430 0 3 0x82 kqread syz-fuzzer
21684 489834 89430 0 3 0x4000082 nanoslp syz-fuzzer
21684 480974 89430 0 3 0x4000082 thrsleep syz-fuzzer
21684 349934 89430 0 3 0x4000082 thrsleep syz-fuzzer
21684 417133 89430 0 3 0x4000082 thrsleep syz-fuzzer
21684 148224 89430 0 3 0x4000082 nanoslp syz-fuzzer
21684 488073 89430 0 3 0x4000082 thrsleep syz-fuzzer
21684 166737 89430 0 3 0x4000082 thrsleep syz-fuzzer
89430 521011 10432 0 3 0x10008a sigsusp ksh
10432 249782 8974 0 3 0x9a poll sshd
8974 512640 1 0 3 0x88 poll sshd
21023 423776 88682 74 3 0x100092 bpf pflogd
88682 65681 1 0 3 0x80 netio pflogd
26777 384177 90151 73 3 0x100090 kqread syslogd
90151 42445 1 0 3 0x100082 netio syslogd
82538 368389 1 0 3 0x100080 kqread resolvd
58582 330555 54962 77 3 0x100092 kqread dhcpleased
40180 359290 54962 77 3 0x100092 kqread dhcpleased
54962 62932 1 0 3 0x80 kqread dhcpleased
59437 256818 0 0 2 0x14200 smr
79732 239440 0 0 2 0x14200 zerothread
97696 63261 0 0 3 0x14200 aiodoned aiodoned
79272 68895 0 0 3 0x14200 syncer update
41973 415314 0 0 3 0x14200 cleaner cleaner
7007 493706 0 0 7 0x14200 reaper
323 409429 0 0 3 0x14200 pgdaemon pagedaemon
79349 167344 0 0 3 0x14200 bored viomb
74293 61388 0 0 3 0x40014200 acpi0 acpi0
85700 194078 0 0 3 0x40014200 idle1
97565 50488 0 0 3 0x14200 bored softnet
42696 64662 0 0 3 0x14200 bored systqmp
7469 521149 0 0 3 0x14200 bored systq
77707 49845 0 0 3 0x40014200 bored softclock
35296 186315 0 0 3 0x40014200 idle0
1 233796 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 1:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff8290ec90)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_pmr_freepages+0x10c sys/uvm/uvm_pmemrange.c:1289
#4 pmap_do_remove+0x666 sys/arch/amd64/amd64/pmap.c:1884
#5 uvm_unmap_kill_entry_withlock+0x1af sys/uvm/uvm_map.c:2139
#6 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
#6 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771
#7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685
#8 reaper+0x18b sys/kern/kern_exit.c:462
#9 proc_trampoline+0x1c
Process 7255 (syz-executor.0) thread 0xffff800021254540 (370915)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828f9c10)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416
#3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433
#4 tsleep+0x12c sys/kern/kern_synch.c:158
#5 getblk+0x13c sys/kern/vfs_bio.c:1031
#6 bread+0x3a bio_doread sys/kern/vfs_bio.c:436 [inline]
#6 bread+0x3a sys/kern/vfs_bio.c:481
#7 ffs_vget+0x204 sys/ufs/ffs/ffs_vfsops.c:1364
#8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582
#9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561
#11 namei+0x36a sys/kern/vfs_lookup.c:245
#12 vn_open+0x105 sys/kern/vfs_vnops.c:146
#13 doopenat+0x26a sys/kern/vfs_syscalls.c:1128
#14 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#15 Xsyscall+0x128
Process 27818 (syz-executor.2) thread 0xffff800021255500 (252139)
exclusive rrwlock inode r = 0 (0xfffffd8069200f88)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806a5fb918)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10216 7068K 7183K 78643K 13430 0
pcb 13 8K 8K 78643K 109 0
rtable 149 4K 5K 78643K 367 0
ifaddr 61 14K 14K 78643K 106 0
sysctl 2 0K 0K 78643K 2 0
counters 48 34K 34K 78643K 64 0
ioctlops 0 0K 4K 78643K 1576 0
iov 0 0K 12K 78643K 49 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1256 79K 79K 78643K 2012 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 13 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 109 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12598 0
file desc 8 25K 49K 78643K 2088 0
sigio 0 0K 0K 78643K 1 0
proc 70 87K 124K 78643K 624 0
subproc 52 3K 4K 78643K 78 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 66 0
in_multi 54 3K 4K 78643K 160 0
ether_multi 1 0K 0K 78643K 28 0
mrt 0 0K 0K 78643K 19 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 67 307K 307K 78643K 67 0
exec 0 0K 2K 78643K 547 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 279 182K 182K 78643K 26091 0
UVM aobj 28 2K 2K 78643K 48 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 140 0
NDP 8 0K 1K 78643K 32 0
temp 66 4195K 4832K 78643K 17337 0
kqueue 10 14K 18K 78643K 59 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 59 0 56 1 0 1 1 0 8 0
rtentry 112 103 0 38 2 0 2 2 0 8 0
unpcb 136 449 0 434 2 1 1 2 0 8 0
syncache 296 22 0 22 4 4 0 1 0 8 0
tcpqe 32 411 0 411 2 2 0 1 0 8 0
tcpcb 736 327 0 317 7 5 2 4 0 8 0
arp 120 15 0 4 1 0 1 1 0 8 0
inpcb 304 890 0 869 4 2 2 2 0 8 0
rttmr 72 9 0 9 1 1 0 1 0 8 0
nd6 48 22 0 10 1 0 1 1 0 8 0
kcovpl 48 6 0 2 1 0 1 1 0 8 0
pfstscr 40 4 0 4 1 1 0 1 0 8 0
pffrag 232 7 0 6 1 0 1 1 0 482 0
pffrnode 88 7 0 6 1 0 1 1 0 8 0
pffrent 40 13 0 12 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
pfrktable 1344 2 0 2 1 1 0 1 0 8 0
pftag 88 1 0 1 1 1 0 1 0 8 0
pfstitem 24 53 0 22 1 0 1 1 0 8 0
pfstkey 112 69 0 38 2 0 2 2 0 8 0
pfstate 320 61 0 30 4 0 4 4 0 8 0
pfrule 1360 49 0 35 3 1 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 368 0 94 18 0 18 18 0 8 0
art_table 32 369 0 94 3 0 3 3 0 8 0
art_node 16 102 0 44 1 0 1 1 0 8 0
semapl 112 107 0 97 1 0 1 1 0 8 0
shmpl 112 45 0 20 2 1 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 3998 0 2578 90 0 90 90 0 8 0
ffsino 272 3998 0 2578 96 0 96 96 0 8 0
nchpl 144 6581 0 4987 61 0 61 61 0 8 0
uvmvnodes 80 4639 0 0 95 0 95 95 0 8 0
vnodes 224 4639 0 0 273 0 273 273 0 8 0
namei 1024 17094 0 17093 1 0 1 1 0 8 0
percpumem 16 44 0 8 1 0 1 1 0 8 0
vcpupl 2048 8 0 0 1 0 1 1 0 8 0
vmpool 560 8 0 0 1 0 1 1 0 8 0
scxspl 216 20226 0 20226 10 9 1 8 0 8 1
plimitpl 152 102 0 91 1 0 1 1 0 8 0
sigapl 424 2322 0 2286 5 0 5 5 0 8 0
futexpl 64 12086 0 12085 1 0 1 1 0 8 0
knotepl 112 81 0 0 3 0 3 3 0 8 0
kqueuepl 216 155 0 149 1 0 1 1 0 8 0
pipepl 336 122 0 106 2 0 2 2 0 8 0
fdescpl 496 2307 0 2286 4 1 3 4 0 8 0
filepl 152 6933 0 6780 8 1 7 7 0 8 0
lockfpl 104 356 0 354 1 0 1 1 0 8 0
lockfspl 48 127 0 125 1 0 1 1 0 8 0
sessionpl 144 23 0 10 1 0 1 1 0 8 0
pgrppl 48 23 0 10 1 0 1 1 0 8 0
ucredpl 96 997 0 985 1 0 1 1 0 8 0
zombiepl 144 2286 0 2285 1 0 1 1 0 8 0
processpl 1064 2322 0 2285 3 0 3 3 0 8 0
procpl 672 4617 0 4570 5 0 5 5 0 8 0
srpgc 96 2 0 2 1 1 0 1 0 8 0
sosppl 168 4 0 4 1 1 0 1 0 8 0
sockpl 480 1402 0 1373 8 3 5 6 0 8 1
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 6 0 0 1 0 1 1 0 8 0
mcl12k 12288 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 6 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 6 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 171 0 0 21 0 21 21 0 8 0
mtagpl 96 177 0 0 5 0 5 5 0 8 0
mbufpl 256 615 0 0 37 0 37 37 0 8 0
bufpl 288 6870 0 525 454 0 454 454 0 8 0
anonpl 24 590569 0 578453 126 27 99 99 0 186 16
amapchunkpl 152 63675 0 63078 43 16 27 38 0 158 1
amappl16 200 6129 0 5802 43 16 27 30 0 8 8
amappl15 192 818 0 817 1 0 1 1 0 8 0
amappl14 184 880 0 878 1 0 1 1 0 8 0
amappl13 176 54 0 53 1 0 1 1 0 8 0
amappl12 168 228 0 223 1 0 1 1 0 8 0
amappl11 160 45 0 31 1 0 1 1 0 8 0
amappl10 152 455 0 445 1 0 1 1 0 8 0
amappl9 144 260 0 258 1 0 1 1 0 8 0
amappl8 136 428 0 382 2 0 2 2 0 8 0
amappl7 128 87 0 76 1 0 1 1 0 8 0
amappl6 120 172 0 151 1 0 1 1 0 8 0
amappl5 112 2732 0 2711 1 0 1 1 0 8 0
amappl4 104 983 0 960 1 0 1 1 0 8 0
amappl3 96 406 0 390 1 0 1 1 0 8 0
amappl2 88 408 0 368 2 1 1 2 0 8 0
amappl1 80 41673 0 41188 13 1 12 13 0 8 0
amappl 88 25653 0 25461 6 0 6 6 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 47 0 20 1 0 1 1 0 8 0
uaddrrnd 24 2315 0 2286 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2315 0 2286 1 0 1 1 0 8 0
vmmpekpl 168 15515 0 15477 2 0 2 2 0 8 0
vmmpepl 168 204155 0 202362 116 20 96 96 0 357 10
vmsppl 368 2314 0 2285 3 0 3 3 0 8 0
rwobjpl 56 52079 0 46251 86 2 84 84 0 8 0
pdppl 4096 4638 0 4578 83 21 62 62 0 8 2
pvpl 32 1147531 0 1131872 195 24 171 171 0 265 27
pmappl 248 2314 0 2285 2 0 2 2 0 8 0
extentpl 40 57 0 38 1 0 1 1 0 8 0
phpool 112 827 0 29 23 0 23 23 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
pppacopen(408633c,2,2000,ffff800021254540) at pppacopen+0x1b5 sys/net/if_pppx.c:1020
spec_open(ffff8000246cc698) at spec_open+0x3d7 sys/kern/spec_vnops.c:157
VOP_OPEN(fffffd80680a2bf8,2,fffffd807f7d77e0,ffff800021254540) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138
vn_open(ffff8000246cc8e8,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183
doopenat(ffff800021254540,ffffff9c,20000400,1,0,ffff8000246ccad0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128
syscall(ffff8000246ccb40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000246ccb40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1ef2009fd10, count: -7
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff828f9a08) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828f9a08) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff8000211850b0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615
uvm_map_teardown(fffffd806c477010) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789
uvmspace_free(fffffd806c477010) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685
reaper(ffff800021149a40) at reaper+0x18b sys/kern/kern_exit.c:462
end trace frame: 0x0, count: 7
ddb{1}> trace
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff828f9a08) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828f9a08) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff8000211850b0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615
uvm_map_teardown(fffffd806c477010) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789
uvmspace_free(fffffd806c477010) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685
reaper(ffff800021149a40) at reaper+0x18b sys/kern/kern_exit.c:462
end trace frame: 0x0, count: -8