panic: kmmaplk rwlock 0xffffffff83a0a898: enter read deadlock
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*368793 10449 0 0x14000 0x200 0 reaper
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8342c604) at panic+0x1cf sys/kern/subr_prf.c:198
rw_do_enter_read(ffffffff83a0a898,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379
uvmfault_lookup(ffff80002a722970,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
uvm_fault_check(ffff80002a722970,ffff80002a7229a8,ffff80002a7229e0,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
uvm_fault(ffffffff83a0a7b0,ffff800029ee6000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80002a722b10,ffff800029ee6000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1
kerntrap(ffff80002a722b10) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff8000ffff9698) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a77cb10) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a77cb10,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
end trace frame: 0xffff80002a722d60, count: 0
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: kmmaplk rwlock 0xffffffff83a0a898: enter read deadlock
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8342c604) at panic+0x1cf sys/kern/subr_prf.c:198
rw_do_enter_read(ffffffff83a0a898,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379
uvmfault_lookup(ffff80002a722970,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
uvm_fault_check(ffff80002a722970,ffff80002a7229a8,ffff80002a7229e0,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
uvm_fault(ffffffff83a0a7b0,ffff800029ee6000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80002a722b10,ffff800029ee6000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1
kerntrap(ffff80002a722b10) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff8000ffff9698) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a77cb10) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a77cb10,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
spllower(0) at spllower+0xac sys/arch/amd64/amd64/intr.c:833
pool_get(ffffffff83aa1948,1) at pool_get+0x1b8 sys/kern/subr_pool.c:594
uvm_mapent_alloc(ffffffff83a0a7b0,0) at uvm_mapent_alloc+0x3a4 sys/uvm/uvm_map.c:-1
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab sys/uvm/uvm_map.c:1988
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 vm_map_unlock_ln sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 sys/uvm/uvm_map.c:1799
km_free(ffff80003a176000,6000,ffffffff836a38f0,ffffffff8354c6e8) at km_free+0x85 sys/uvm/uvm_km.c:714
uvm_uarea_free(ffff80002a8794f0) at uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
reaper(ffff80002a6eccf8) at reaper+0x1a9 sys/kern/kern_exit.c:493
end trace frame: 0x0, count: -24
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a722670
rbx 0xffff800029ee6000
rdx 0
rcx 0
rax 0xffff80002a6eccf8
r8 0x101010101010101
r9 0x8080808080808080
r10 0x1051a57a551007b7
r11 0xe0de413e1238c40c
r12 0
r13 0xffff80002a6eccfc
r14 0
r15 0x1
rip 0xffffffff82b91815 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a722660
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (reaper) tid=368793 pid=10449 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
runpri=50, usrpri=50, slppri=4, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a6ec530,0xffff80002a6ed4d0
process=0xffff8000ffffdb00 user=0xffff80002a71e000, vmspace=0xffffffff83ae1720
estcpu=0, cpticks=11, pctcpu=0.0, user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
92289 234624 88830 0 3 0 vmmaplk syz-executor
92289 272774 88830 0 3 0x4000080 fsleep syz-executor
92289 440227 88830 0 2 0x4000000 syz-executor
32768 352748 50649 0 4 0x82000 syz-executor
32768 96927 50649 0 4 0x4082000 syz-executor
32768 237110 50649 0 2 0x4002000 syz-executor
25912 347337 91591 0 2 0 syz-executor
25912 466690 91591 0 3 0x4000080 fsleep syz-executor
39143 407883 9428 0 3 0x80 nanoslp syz-executor
39143 73369 9428 0 3 0x4000080 fsleep syz-executor
39143 392015 9428 0 3 0x4000080 fsleep syz-executor
5022 520386 79580 0 2 0 syz-executor
5022 447390 79580 0 3 0x4000080 fsleep syz-executor
5022 51556 79580 0 3 0x4000080 fsleep syz-executor
1385 112918 71311 0 2 0 syz-executor
1385 89046 71311 0 3 0x4000080 fsleep syz-executor
1385 344966 71311 0 3 0x4000080 fsleep syz-executor
1385 85708 71311 0 3 0x4000080 fsleep syz-executor
91591 157900 81444 0 3 0x82 nanoslp syz-executor
33819 376029 1 0 3 0x100083 ttyin getty
1193 144782 0 0 3 0x14280 nfsidl nfsio
97792 522613 0 0 3 0x14280 nfsidl nfsio
92531 64716 0 0 3 0x14280 nfsidl nfsio
93051 145749 0 0 3 0x14280 nfsidl nfsio
86469 480134 0 0 3 0x14280 nfsidl nfsio
85985 46337 0 0 3 0x14280 nfsidl nfsio
36458 175157 0 0 3 0x14280 nfsidl nfsio
6672 476413 0 0 3 0x14280 nfsidl nfsio
16737 501124 0 0 3 0x14280 nfsidl nfsio
64466 303795 0 0 3 0x14280 nfsidl nfsio
58496 137601 0 0 3 0x14280 nfsidl nfsio
32015 390318 0 0 3 0x14280 nfsidl nfsio
94980 230354 0 0 3 0x14280 nfsidl nfsio
34942 310053 0 0 3 0x14280 nfsidl nfsio
18965 82616 0 0 3 0x14280 nfsidl nfsio
83187 368163 0 0 3 0x14280 nfsidl nfsio
68922 258679 0 0 3 0x14280 nfsidl nfsio
6708 427820 0 0 3 0x14280 nfsidl nfsio
90706 300823 0 0 3 0x14280 nfsidl nfsio
9064 487403 0 0 3 0x14280 nfsidl nfsio
9428 255279 81444 0 3 0x82 nanoslp syz-executor
79580 143022 81444 0 3 0x82 nanoslp syz-executor
50649 70510 81444 0 3 0x82 nanoslp syz-executor
71311 310902 81444 0 3 0x82 nanoslp syz-executor
88830 247874 81444 0 3 0x82 nanoslp syz-executor
53421 488267 81444 0 3 0x82 nanoslp syz-executor
81444 166993 62665 0 3 0x82 wait syz-executor
62665 225898 76290 0 3 0x10008a sigsusp ksh
76290 138570 37706 0 3 0x98 kqread sshd-session
37706 512311 76737 0 3 0x92 kqread sshd-session
76737 438380 1 0 3 0x88 kqread sshd
31862 483111 28569 73 3 0x1100090 kqread syslogd
28569 481708 1 0 3 0x100082 sbwait syslogd
78115 461550 1 0 3 0x100080 kqread resolvd
22308 207524 17177 77 3 0x100092 kqread dhcpleased
70342 112226 17177 77 3 0x100092 kqread dhcpleased
17177 20199 1 0 3 0x80 kqread dhcpleased
78778 66714 0 0 3 0x14200 bored smr
76501 362597 0 0 2 0x14200 zerothread
17473 46772 0 0 3 0x14200 aiodoned aiodoned
75926 192888 0 0 3 0x14200 syncer update
31992 502836 0 0 3 0x14200 cleaner cleaner
*10449 368793 0 0 7 0x14200 reaper
55503 147230 0 0 3 0x14200 pgdaemon pagedaemon
55565 280745 0 0 3 0x14200 bored viomb
95420 363096 0 0 3 0x40014200 acpi0 acpi0
18172 262589 0 0 3 0x14200 bored softnet0
62811 475816 0 0 3 0x14200 bored systqmp
32224 261801 0 0 3 0x14200 bored systq
58650 304389 0 0 3 0x40014200 tmoslp softclock
10423 352100 0 0 3 0x40014200 idle0
1 455521 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11064 12123K 13240K 166960K 13726 0
pcb 18 13K 13K 166960K 211 0
rtable 231 9K 10K 166960K 543 0
pf 35 14K 73K 166960K 194 0
ifaddr 35 6K 8K 166960K 98 0
ifgroup 49 2K 2K 166960K 160 0
sysctl 3 1K 9K 166960K 18 0
counters 32 17K 18K 166960K 86 0
ioctlops 0 0K 4K 166960K 266 0
iov 0 0K 16K 166960K 52 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1452 91K 91K 166960K 2517 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 20 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 71 0
dirhash 12 2K 2K 166960K 30 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 240K 166960K 1223 0
sigio 0 0K 0K 166960K 17 0
proc 61 67K 75K 166960K 651 0
subproc 72 4K 4K 166960K 90 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 94 0
in_multi 77 5K 7K 166960K 158 0
ether_multi 1 0K 0K 166960K 9 0
mrt 0 0K 0K 166960K 31 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 241 1076K 1076K 166960K 241 0
exec 0 0K 1K 166960K 556 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 221 144K 158K 166960K 12367 0
UVM aobj 27 2K 2K 166960K 28 0
pinsyscall 37 74K 95K 166960K 2357 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 45 0
NDP 10 0K 2K 166960K 69 0
temp 74 9116K 9180K 166960K 36193 0
kqueue 15 24K 30K 166960K 200 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 92 0 88 1 0 1 1 0 8 0
rtentry 136 164 0 71 5 0 5 5 0 8 1
unpcb 144 488 0 473 4 1 3 3 0 8 2
syncache 336 6 0 6 1 1 0 1 0 8 0
tcpcb 736 345 0 341 7 3 4 4 0 8 3
arp 96 24 0 9 1 0 1 1 0 8 0
ipq 40 4 0 2 1 0 1 1 0 8 0
ipqe 40 4 0 2 1 0 1 1 0 8 0
inpcb 328 955 0 945 10 3 7 7 0 8 6
ip6q 72 6 0 3 1 0 1 1 0 8 0
ip6af 40 9 0 6 1 0 1 1 0 8 0
nd6 112 39 0 17 1 0 1 1 0 8 0
pkpcb 40 10 0 9 2 1 1 1 0 8 0
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1072 40 0 40 2 1 1 1 0 8 1
pppxif 1416 5 0 5 2 1 1 1 0 8 1
pfstscr 40 26 0 17 1 0 1 1 0 8 0
pfanchor 1288 6 0 0 1 0 1 1 0 8 0
pfstitem 24 15 0 7 1 0 1 1 0 8 0
pfstkey 128 38 0 24 1 0 1 1 0 8 0
pfstate 384 19 0 14 1 0 1 1 0 8 0
pfrule 1360 7 0 6 1 0 1 1 0 8 0
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 670 0 292 34 1 33 34 0 8 5
art_table 40 672 0 292 6 0 6 6 0 8 0
art_node 32 158 0 73 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0
semapl 72 66 0 56 1 0 1 1 0 8 0
shmpl 112 25 0 1 1 0 1 1 0 8 0
dirhash 1024 29 0 12 3 0 3 3 0 8 0
dino2pl 256 3640 0 2181 92 0 92 92 0 8 0
ffsino 256 3640 0 2181 92 0 92 92 0 8 0
nchpl 144 5263 0 3561 64 0 64 64 0 8 0
rtmask 32 6 0 6 2 1 1 1 0 8 1
vnodes 216 4368 0 0 243 0 243 243 0 8 0
namei 1024 17293 0 17291 3 2 1 2 0 8 0
kstatmem 264 97 0 76 3 0 3 3 0 8 1
scsiplug 72 14 0 14 2 1 1 1 0 8 1
scxspl 216 20218 0 20218 11 3 8 8 1 8 8
plimitpl 152 261 0 245 1 0 1 1 0 8 0
sigapl 424 1511 0 1449 8 0 8 8 0 8 0
knotepl 120 48098 0 47913 38 28 10 23 0 8 4
kqueuepl 184 316 0 303 3 2 1 3 0 8 0
pipepl 304 174 0 147 3 0 3 3 0 8 0
fdescpl 448 1477 0 1449 5 1 4 5 0 8 0
filepl 120 8326 0 8109 14 2 12 12 0 8 3
lockfpl 104 511 0 502 2 0 2 2 0 8 1
lockfspl 48 205 0 196 1 0 1 1 0 8 0
sessionpl 144 64 0 56 1 0 1 1 0 8 0
pgrppl 48 82 0 66 1 0 1 1 0 8 0
ucredpl 104 1624 0 1613 1 0 1 1 0 8 0
zombiepl 144 1785 0 1783 2 1 1 1 0 8 0
processpl 1152 1511 0 1449 5 0 5 5 0 8 0
procpl 664 3107 0 3032 7 0 7 7 0 8 0
sosppl 176 1 0 1 1 1 0 1 0 8 0
sockpl 552 1645 0 1615 10 3 7 7 0 8 4
mcl64k 65536 166 0 163 1 0 1 1 0 8 0
mcl16k 16384 50 0 50 2 1 1 1 0 8 1
mcl12k 12288 17 0 17 2 1 1 1 0 8 1
mcl9k128 9344 6 0 6 2 1 1 1 0 8 1
mcl8k 8192 106 0 106 3 2 1 2 0 8 1
mcl4k 4096 4245 0 4194 16 8 8 15 0 8 1
mcl2k2 2112 4 0 4 1 1 0 1 0 8 0
mcl2k 2048 1023 0 1020 5 1 4 4 0 8 2
mtagpl 96 10 0 9 1 0 1 1 0 8 0
mbufpl 256 15884 0 15756 24 2 22 22 0 8 6
bufpl 280 7968 0 1752 445 0 445 445 0 8 0
anonpl 24 201132 0 197914 57 10 47 47 0 186 15
amapchunkpl 152 41102 0 40638 47 13 34 34 0 158 14
amappl16 200 3432 0 3402 20 7 13 16 0 8 8
amappl15 192 4 0 4 1 1 0 1 0 8 0
amappl14 184 433 0 432 1 0 1 1 0 8 0
amappl13 176 123 0 113 1 0 1 1 0 8 0
amappl12 168 1729 0 1702 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 148 0 138 1 0 1 1 0 8 0
amappl9 144 267 0 267 1 1 0 1 0 8 0
amappl8 136 101 0 99 1 0 1 1 0 8 0
amappl7 128 150 0 138 1 0 1 1 0 8 0
amappl6 120 168 0 166 1 0 1 1 0 8 0
amappl5 112 91 0 83 1 0 1 1 0 8 0
amappl4 104 286 0 270 1 0 1 1 0 8 0
amappl3 96 8501 0 8394 4 0 4 4 0 8 0
amappl2 88 554 0 497 2 0 2 2 0 8 0
amappl1 80 14661 0 14116 13 1 12 13 0 8 0
amappl 88 11480 0 11322 5 0 5 5 0 92 0
uvmvnodes 80 130 0 0 3 0 3 3 0 8 0
dma32768 32768 1 0 1 1 1 0 1 0 8 0
dma8192 8192 2 0 2 2 1 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 128 255 0 255 2 1 1 1 0 8 1
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 19 0 18 1 0 1 1 0 8 0
aobjpl 72 27 0 1 1 0 1 1 0 8 0
uaddrrnd 24 1477 0 1449 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1477 0 1449 1 0 1 1 0 8 0
vmmpekpl 168 12385 0 12343 3 0 3 3 0 8 0
vmmpepl 168 97288 0 95540 94 1 93 93 0 357 8
vmsppl 368 1476 0 1448 4 1 3 4 0 8 0
rwobjpl 40 26723 0 25717 14 0 14 14 0 8 0
pdppl 4096 2960 0 2896 94 28 66 78 0 8 2
pvpl 32 635476 0 625584 139 22 117 117 0 265 19
pmappl 216 1476 0 1448 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 395 0 55 10 0 10 10 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8342c604) at panic+0x1cf sys/kern/subr_prf.c:198
rw_do_enter_read(ffffffff83a0a898,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379
uvmfault_lookup(ffff80002a722970,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
uvm_fault_check(ffff80002a722970,ffff80002a7229a8,ffff80002a7229e0,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
uvm_fault(ffffffff83a0a7b0,ffff800029ee6000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80002a722b10,ffff800029ee6000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1
kerntrap(ffff80002a722b10) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff8000ffff9698) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a77cb10) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a77cb10,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
spllower(0) at spllower+0xac sys/arch/amd64/amd64/intr.c:833
pool_get(ffffffff83aa1948,1) at pool_get+0x1b8 sys/kern/subr_pool.c:594
uvm_mapent_alloc(ffffffff83a0a7b0,0) at uvm_mapent_alloc+0x3a4 sys/uvm/uvm_map.c:-1
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab sys/uvm/uvm_map.c:1988
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 vm_map_unlock_ln sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 sys/uvm/uvm_map.c:1799
km_free(ffff80003a176000,6000,ffffffff836a38f0,ffffffff8354c6e8) at km_free+0x85 sys/uvm/uvm_km.c:714
uvm_uarea_free(ffff80002a8794f0) at uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
reaper(ffff80002a6eccf8) at reaper+0x1a9 sys/kern/kern_exit.c:493
end trace frame: 0x0, count: -24
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8342c604) at panic+0x1cf sys/kern/subr_prf.c:198
rw_do_enter_read(ffffffff83a0a898,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379
uvmfault_lookup(ffff80002a722970,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
uvm_fault_check(ffff80002a722970,ffff80002a7229a8,ffff80002a7229e0,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
uvm_fault(ffffffff83a0a7b0,ffff800029ee6000,0,2) at uvm_fault+0xe6 sys/uvm/uvm_fault.c:627
kpageflttrap(ffff80002a722b10,ffff800029ee6000) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1
kerntrap(ffff80002a722b10) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff8000ffff9698) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff8399e2b0,ffff80002a77cb10) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a77cb10,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
spllower(0) at spllower+0xac sys/arch/amd64/amd64/intr.c:833
pool_get(ffffffff83aa1948,1) at pool_get+0x1b8 sys/kern/subr_pool.c:594
uvm_mapent_alloc(ffffffff83a0a7b0,0) at uvm_mapent_alloc+0x3a4 sys/uvm/uvm_map.c:-1
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap_remove(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000,ffff80002a722ff8,0,1,82611448fe953f14) at uvm_unmap_remove+0x5ab sys/uvm/uvm_map.c:1988
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 vm_map_unlock_ln sys/uvm/uvm_map.c:-1 [inline]
uvm_unmap(ffffffff83a0a7b0,ffff80003a176000,ffff80003a17c000) at uvm_unmap+0xa7 sys/uvm/uvm_map.c:1799
km_free(ffff80003a176000,6000,ffffffff836a38f0,ffffffff8354c6e8) at km_free+0x85 sys/uvm/uvm_km.c:714
uvm_uarea_free(ffff80002a8794f0) at uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
reaper(ffff80002a6eccf8) at reaper+0x1a9 sys/kern/kern_exit.c:493
end trace frame: 0x0, count: -24