panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x56049216000, opte 0xffffffffffffffff
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 52845 82294 0 0x14000 0x200 0 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202
pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e
pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865
uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771
uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684
reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454
end trace frame: 0x0, 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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x56049216000, opte 0xffffffffffffffff
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202
pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e
pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865
uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771
uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684
reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454
end trace frame: 0x0, count: -8
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff8000215c0420
rbx 0xfffffd8005ac6680
rdx 0
rcx 0
rax 0xffff8000ffff8fc8
r8 0x101010101010101
r9 0x8080808080808080
r10 0xeaeb7e00c024c853
r11 0x7b4e926156389d7e
r12 0
r13 0
r14 0
r15 0x1
rip 0xffffffff81c36e88 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000215c0410
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (reaper) pid=52845 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffffce0,0xffff8000ffff8d38
process=0xffff8000ffffa7d8 user=0xffff8000215bb000, vmspace=0xffffffff829c3978
estcpu=0, cpticks=1, pctcpu=0.2
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
52920 55572 61533 0 2 0 syz-executor.4
52920 158094 61533 0 3 0x4000080 fsleep syz-executor.4
26744 43707 74341 0 2 0 syz-executor.3
26744 76178 74341 0 3 0x4000080 fsleep syz-executor.3
78396 261236 60487 0 2 0 syz-executor.2
78396 332921 60487 0 3 0x4000080 fsleep syz-executor.2
83176 329581 35073 0 2 0 syz-executor.1
83176 149997 35073 0 3 0x4000080 fsleep syz-executor.1
83176 73007 35073 0 3 0x4000080 fsleep syz-executor.1
83176 113589 35073 0 3 0x4000080 fsleep syz-executor.1
22425 358404 42989 0 3 0x82 nanoslp syz-executor.0
26292 148560 0 0 3 0x14200 acct acct
61533 211168 42989 0 3 0x82 nanoslp syz-executor.4
71220 177276 0 0 3 0x14280 nfsidl nfsio
9722 53265 0 0 3 0x14280 nfsidl nfsio
11059 289079 0 0 3 0x14280 nfsidl nfsio
15791 410184 0 0 3 0x14280 nfsidl nfsio
11345 501080 0 0 3 0x14280 nfsidl nfsio
82330 421600 0 0 3 0x14280 nfsidl nfsio
55173 112281 0 0 3 0x14280 nfsidl nfsio
10706 336109 0 0 3 0x14280 nfsidl nfsio
51099 305981 0 0 3 0x14280 nfsidl nfsio
39044 275941 0 0 3 0x14280 nfsidl nfsio
96487 257552 0 0 3 0x14280 nfsidl nfsio
37502 230413 0 0 3 0x14280 nfsidl nfsio
81378 489757 0 0 3 0x14280 nfsidl nfsio
14724 250344 0 0 3 0x14280 nfsidl nfsio
13537 243289 0 0 3 0x14280 nfsidl nfsio
8421 130102 0 0 3 0x14280 nfsidl nfsio
75638 479325 0 0 3 0x14280 nfsidl nfsio
98048 225174 0 0 3 0x14280 nfsidl nfsio
40118 182233 0 0 3 0x14280 nfsidl nfsio
91899 81315 0 0 3 0x14280 nfsidl nfsio
8592 457835 42989 0 3 0x82 nanoslp syz-executor.7
52124 403407 42989 0 3 0x82 nanoslp syz-executor.6
74341 206269 42989 0 3 0x82 nanoslp syz-executor.3
60487 211699 42989 0 3 0x82 nanoslp syz-executor.2
94795 288676 0 0 3 0x14200 bored sosplice
35073 261902 42989 0 3 0x82 nanoslp syz-executor.1
52691 502515 42989 0 3 0x82 nanoslp syz-executor.5
42989 145543 89788 0 3 0x82 thrsleep syz-fuzzer
42989 111796 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 132789 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 86969 89788 0 3 0x4000082 kqread syz-fuzzer
42989 38105 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 232285 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 314342 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 512120 89788 0 3 0x4000082 thrsleep syz-fuzzer
42989 294021 89788 0 3 0x4000082 thrsleep syz-fuzzer
89788 198143 67094 0 3 0x10008a sigsusp ksh
67094 227472 72736 0 3 0x9a kqread sshd
76411 508851 1 0 3 0x100083 ttyin getty
72736 312737 1 0 3 0x88 kqread sshd
78628 394060 52769 73 3 0x1100090 kqread syslogd
52769 497827 1 0 3 0x100082 netio syslogd
42177 337332 1 0 3 0x100080 kqread resolvd
40168 48993 26614 77 3 0x100092 kqread dhcpleased
9260 291636 26614 77 3 0x100092 kqread dhcpleased
26614 78656 1 0 3 0x80 kqread dhcpleased
84126 344345 0 0 3 0x14200 bored smr
68988 242613 0 0 2 0x14200 zerothread
76099 198366 0 0 3 0x14200 aiodoned aiodoned
80601 124943 0 0 3 0x14200 syncer update
81823 237527 0 0 3 0x14200 cleaner cleaner
*82294 52845 0 0 7 0x14200 reaper
52099 79134 0 0 3 0x14200 pgdaemon pagedaemon
13825 99046 0 0 3 0x14200 bored viomb
2685 386846 0 0 3 0x40014200 acpi0 acpi0
81802 452922 0 0 3 0x14200 bored softnet
96054 329965 0 0 3 0x14200 bored softnet
11878 154617 0 0 3 0x14200 bored softnet
69224 407686 0 0 3 0x14200 bored softnet
94129 479012 0 0 3 0x14200 bored systqmp
37592 368566 0 0 3 0x14200 bored systq
62455 521503 0 0 3 0x40014200 bored softclock
47975 261863 0 0 3 0x40014200 idle0
1 5681 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10343 6498K 9503K 78643K 29283 0
pcb 13 16K 18K 78643K 1729 0
rtable 175 12K 13K 78643K 1013 0
ifaddr 80 16K 18K 78643K 348 0
sysctl 2 0K 0K 78643K 2 0
counters 26 17K 17K 78643K 59 0
ioctlops 0 0K 4K 78643K 12171 0
iov 0 0K 16K 78643K 722 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1405 88K 88K 78643K 14941 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 63 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 196 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 81K 78643K 17938 0
sigio 0 0K 0K 78643K 668 0
proc 59 59K 83K 78643K 1229 0
subproc 104 6K 6K 78643K 299 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 289 0
in_multi 63 4K 7K 78643K 415 0
ether_multi 1 0K 0K 78643K 53 0
mrt 1 0K 0K 78643K 26 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 247 1102K 1102K 78643K 247 0
exec 0 0K 2K 78643K 1596 0
pfkey data 0 0K 1K 78643K 4 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 349 121K 150K 78643K 92972 0
UVM aobj 131 5K 5K 78643K 145 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 135 0
NDP 12 0K 2K 78643K 91 0
temp 134 4738K 21122K 78643K 55115 0
kqueue 13 20K 28K 78643K 1381 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 147 0 144 1 0 1 1 0 8 0
rtentry 112 299 0 230 4 1 3 4 0 8 0
unpcb 136 2433 0 2420 24 23 1 5 0 8 0
syncache 296 73 0 73 7 7 0 1 0 8 0
tcpqe 32 50 0 50 4 4 0 1 0 8 0
tcpcb 736 5700 0 5696 107 106 1 20 0 8 0
arp 88 50 0 37 1 0 1 1 0 8 0
ipq 40 1 0 1 1 1 0 1 0 8 0
ipqe 40 36 0 36 1 1 0 1 0 8 0
inpcb 312 11664 0 11654 142 141 1 16 0 8 0
nd6 48 71 0 55 1 0 1 1 0 8 0
pkpcb 40 25 0 25 4 4 0 1 0 8 0
kcovpl 48 23 0 15 1 0 1 1 0 8 0
ppxss 1152 8 0 8 3 3 0 1 0 8 0
pfosfp 40 4 0 3 1 0 1 1 0 8 0
pfosfpen 112 4 0 0 1 0 1 1 0 8 0
pfrktable 1344 24 0 18 1 0 1 1 0 8 0
pftag 88 5 0 3 2 1 1 1 0 8 0
pfstitem 24 2 0 0 1 0 1 1 0 8 0
pfstkey 112 16 0 14 2 1 1 1 0 8 0
pfstate 336 8 0 7 2 1 1 1 0 8 0
pfrule 1360 100 0 62 5 1 4 4 0 8 0
rttmr 64 6 0 6 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1292 0 999 42 23 19 29 0 8 0
art_table 32 1293 0 999 4 0 4 4 0 8 0
art_node 16 298 0 239 1 0 1 1 0 8 0
sysvmsgpl 40 47 0 38 2 1 1 1 0 8 0
semapl 112 194 0 184 1 0 1 1 0 8 0
shmpl 112 142 0 14 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 22832 0 21393 92 1 91 91 0 8 0
ffsino 240 22832 0 21393 86 1 85 86 0 8 0
nchpl 144 47113 0 45480 63 1 62 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 172181 0 172181 9 8 1 2 0 8 1
vcpupl 1984 3 0 1 1 0 1 1 0 8 0
vmpool 528 3 0 1 1 0 1 1 0 8 0
pfiaddrpl 120 22 0 4 1 0 1 1 0 8 0
kstatmem 264 90 0 66 2 0 2 2 0 8 0
scxspl 216 119898 0 119898 24 23 1 8 0 8 1
plimitpl 152 469 0 455 1 0 1 1 0 8 0
sigapl 424 18235 0 18168 8 0 8 8 0 8 0
futexpl 64 144897 0 144891 6 5 1 1 0 8 0
knotepl 120 289518 0 289436 21 17 4 11 0 8 0
kqueuepl 184 5461 0 5451 20 19 1 4 0 8 0
pipepl 304 2792 0 2764 71 68 3 8 0 8 0
fdescpl 432 18183 0 18158 4 0 4 4 0 8 0
filepl 120 117081 0 116841 153 142 11 18 0 8 3
lockfpl 104 4362 0 4357 7 6 1 2 0 8 0
lockfspl 48 1096 0 1091 1 0 1 1 0 8 0
sessionpl 144 38 0 22 1 0 1 1 0 8 0
pgrppl 48 121 0 105 1 0 1 1 0 8 0
ucredpl 96 12327 0 12317 1 0 1 1 0 8 0
zombiepl 144 18172 0 18168 5 4 1 1 0 8 0
processpl 1000 18235 0 18168 13 4 9 9 0 8 0
procpl 672 42128 0 42047 22 14 8 9 0 8 0
sosppl 168 43 0 43 4 4 0 1 0 8 0
sockpl 448 14270 0 14247 248 245 3 25 0 8 0
mcl64k 65536 175 0 175 35 35 0 1 0 8 0
mcl16k 16384 66 0 66 22 22 0 1 0 8 0
mcl12k 12288 227 0 227 29 29 0 1 0 8 0
mcl9k 9216 78 0 78 19 19 0 1 0 8 0
mcl8k 8192 222 0 222 35 35 0 1 0 8 0
mcl4k 4096 732 0 732 28 27 1 1 0 8 1
mcl2k2 2112 95 0 95 34 34 0 1 0 8 0
mcl2k 2048 48542 0 48496 116 108 8 18 0 8 0
mtagpl 96 841 0 523 12 4 8 10 0 8 0
mbufpl 256 154355 0 153854 48 12 36 47 0 8 0
bufpl 288 23128 0 16721 458 0 458 458 0 8 0
anonpl 24 3073379 0 3062523 225 128 97 128 0 188 0
amapchunkpl 152 269511 0 269044 77 56 21 51 0 158 1
amappl16 200 43604 0 43291 165 147 18 52 0 8 0
amappl15 192 3829 0 3828 5 4 1 1 0 8 0
amappl14 184 2366 0 2356 1 0 1 1 0 8 0
amappl13 176 6120 0 6117 1 0 1 1 0 8 0
amappl12 168 4352 0 4345 1 0 1 1 0 8 0
amappl11 160 2612 0 2594 1 0 1 1 0 8 0
amappl10 152 30 0 24 1 0 1 1 0 8 0
amappl9 144 761 0 753 1 0 1 1 0 8 0
amappl8 136 1750 0 1542 8 0 8 8 0 8 0
amappl7 128 260 0 249 1 0 1 1 0 8 0
amappl6 120 597 0 570 2 1 1 2 0 8 0
amappl5 112 11944 0 11932 1 0 1 1 0 8 0
amappl4 104 7794 0 7748 2 0 2 2 0 8 0
amappl3 96 55676 0 55631 2 0 2 2 0 8 0
amappl2 88 24920 0 24846 3 1 2 3 0 8 0
amappl1 80 421898 0 421289 34 20 14 19 0 8 0
amappl 88 91826 0 91680 4 0 4 4 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 72 144 0 14 3 0 3 3 0 8 0
uaddrrnd 24 18186 0 18159 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 18186 0 18159 1 0 1 1 0 8 0
vmmpekpl 168 108497 0 108438 3 0 3 3 0 8 0
vmmpepl 168 1688727 0 1686368 234 118 116 130 0 357 0
vmsppl 272 18185 0 18158 7 4 3 3 0 8 0
rwobjpl 24 397247 0 389768 48 2 46 47 0 8 0
pdppl 4096 36378 0 36318 700 634 66 72 0 8 6
pvpl 32 6072941 0 6057740 333 174 159 247 0 265 0
pmappl 216 18185 0 18158 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2189 0 1406 24 0 24 24 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202
pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e
pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865
uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771
uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684
reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454
end trace frame: 0x0, count: -8
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202
pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e
pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865
uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771
uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684
reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454
end trace frame: 0x0, count: -8