assert "pg->wire_count == NUM" failed in CuvAmLL_pa g83 e.-1c9

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: df8f251ef5f9 These function -> These functions
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=100eb77c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=83f1595fff9ca2f987f3

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8c8efede9ab9/disk-df8f251e.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/0a6842c0751f/bsd-df8f251e.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/49a1b91ab960/kernel-df8f251e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83f159...@syzkaller.appspotmail.com

panic: kernel diagnostic assertion "pg->wire_count == 0" failed: file "/syzkaller/manageWrARNsI/NsGe: tSuPiLd/ kNeOrT nLeOWlE/RsEysD O/Nu SvYmS/CuvAmLL_pa g83 e.-1c9",4 0l8i65n1e8 143 E2X6I
T 0 aS
topped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
205807 71510 32767 0x10 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833af185) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833f18ec,ffffffff83348048,52e,ffffffff8340689d) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagedequeue(fffffd8004b0ab88) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324
uvm_pageclean(fffffd8004b0ab88) at uvm_pageclean+0x2ad sys/uvm/uvm_page.c:981
uvm_pagefree(fffffd8004b0ab88) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvm_anfree(fffffd80698e6348) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806cabe1d0) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a343db0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd806cdc03f0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
exit1(ffff80003c432a88,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff80003c432a88,ffff80002a343f80,ffff80002a343ed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a343f80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a343f80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ca5ede20ee0, count: 1
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: kernel diagnostic assertion "pg->wire_count == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_page.c", line 1326
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833af185) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833f18ec,ffffffff83348048,52e,ffffffff8340689d) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagedequeue(fffffd8004b0ab88) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324
uvm_pageclean(fffffd8004b0ab88) at uvm_pageclean+0x2ad sys/uvm/uvm_page.c:981
uvm_pagefree(fffffd8004b0ab88) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvm_anfree(fffffd80698e6348) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806cabe1d0) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a343db0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd806cdc03f0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
exit1(ffff80003c432a88,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff80003c432a88,ffff80002a343f80,ffff80002a343ed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a343f80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a343f80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ca5ede20ee0, count: -14
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a343b20
rbx 0xffff8000299eee07
rdx 0
rcx 0xffff80003c432a88
rax 0xffff8000299edff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x9b6af979e5bbfaea
r11 0xb046c09a218659b
r12 0xffff8000299eec08
r13 0
r14 0
r15 0x1
rip 0xffffffff82fd7095 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a343b10
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=118010 pid=4395 tcnt=0 stat=onproc
flags process=1018<EXITING,SUGID,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80003c432a88 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80003c432558,0xffff80003c433260
process=0xffff80003c41f040 user=0xffff80002a33f000, vmspace=0xfffffd806cdc03f0
estcpu=36, cpticks=16, pctcpu=0.0, user=0, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
71510 205807 42412 32767 7 0x10 syz-executor
71510 374890 42412 32767 3 0x4000090 fsleep syz-executor
71510 278629 42412 32767 3 0x4000090 fsleep syz-executor
49483 302406 91182 32767 2 0x10 syz-executor
49483 152130 91182 32767 3 0x4000090 ttyopn syz-executor
49483 122783 91182 32767 3 0x4000090 msgwait syz-executor
49483 429733 91182 32767 3 0x4000090 msgwait syz-executor
30961 190271 50475 32767 3 0x90 nanoslp syz-executor
86945 107968 11898 32767 3 0x90 piperd syz-executor
22269 188626 57679 32767 3 0x90 piperd syz-executor
42412 54623 10240 32767 3 0x90 nanoslp syz-executor
5936 49555 72103 32767 3 0x90 nanoslp syz-executor
91182 200475 35915 32767 3 0x90 nanoslp syz-executor
11898 363614 89183 0 3 0x82 wait syz-executor
57679 500961 89183 0 3 0x82 wait syz-executor
10240 348469 89183 0 3 0x82 wait syz-executor
72103 44343 89183 0 3 0x82 wait syz-executor
35915 407632 89183 0 3 0x82 wait syz-executor
50475 120259 89183 0 3 0x82 wait syz-executor
89183 301990 84333 0 3 0x82 nanoslp syz-executor
84333 397829 67616 0 3 0x10008a sigsusp ksh
67616 434424 46138 0 3 0x98 kqread sshd-session
46138 119560 45359 0 3 0x92 kqread sshd-session
58014 9708 1 0 3 0x100083 ttyin getty
45359 423387 1 0 3 0x88 kqread sshd
23037 419248 70843 73 3 0x1100090 kqread syslogd
70843 400493 1 0 3 0x100082 sbwait syslogd
9501 62452 1 0 3 0x100080 kqread resolvd
52660 287545 36900 77 3 0x100092 kqread dhcpleased
48873 182623 36900 77 3 0x100092 kqread dhcpleased
36900 163328 1 0 3 0x80 kqread dhcpleased
16560 442975 0 0 3 0x14200 bored smr
36822 202996 0 0 2 0x14200 zerothread
4624 310827 0 0 3 0x14200 aiodoned aiodoned
6450 455154 0 0 3 0x14200 syncer update
27714 467189 0 0 3 0x14200 cleaner cleaner
72592 493314 0 0 2 0x14200 reaper
5837 163950 0 0 3 0x14200 pgdaemon pagedaemon
24054 214137 0 0 3 0x14200 bored viomb
57098 13483 0 0 3 0x40014200 acpi0 acpi0
79811 317089 0 0 3 0x40014200 idle1
50464 329590 0 0 3 0x14200 bored softnet1
62969 317719 0 0 3 0x14200 bored softnet0
69488 485954 0 0 3 0x14200 bored systqmp
20933 83788 0 0 3 0x14200 bored systq
51151 99348 0 0 3 0x14200 tmoslp softclockmp
64339 173131 0 0 3 0x40014200 tmoslp softclock
91009 256123 0 0 3 0x40014200 idle0
1 336684 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff839ce5d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 uvm_pmr_freepages+0x1a8 sys/uvm/uvm_pmemrange.c:-1
#3 uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
#4 amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
#5 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
#6 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
#7 exit1+0x6fc sys/kern/kern_exit.c:260
#8 sys_exit+0x1a sys/kern/kern_exit.c:-1
#9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
#10 Xsyscall+0x128
CPU 1:
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839ce598)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 uvm_pageclean+0x29c sys/uvm/uvm_page.c:980
#3 uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
#4 uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
#5 amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
#6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
#7 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
#8 exit1+0x6fc sys/kern/kern_exit.c:260
#9 sys_exit+0x1a sys/kern/kern_exit.c:-1
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
#11 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10182 10953K 10973K 166960K 11279 0
pcb 17 12K 12K 166960K 17 0
rtable 197 5K 7K 166960K 354 0
pf 27 16K 16K 166960K 31 0
ifaddr 34 6K 7K 166960K 44 0
ifgroup 42 1K 2K 166960K 50 0
sysctl 2 1K 9K 166960K 6 0
counters 66 36K 37K 166960K 70 0
ioctlops 0 0K 2K 166960K 32 0
iov 0 0K 12K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1336 84K 84K 166960K 1622 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 12 1K 1K 166960K 47 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 125K 166960K 328 0
sigio 0 0K 0K 166960K 4 0
proc 58 99K 131K 166960K 481 0
subproc 54 3K 4K 166960K 261 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 20 0
in_multi 77 5K 7K 166960K 103 0
ether_multi 1 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 61 281K 281K 166960K 61 0
exec 0 0K 1K 166960K 385 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 205 159K 185K 166960K 4146 0
UVM aobj 5 2K 3K 166960K 6 0
pinsyscall 37 74K 114K 166960K 1386 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 8 0
NDP 9 0K 2K 166960K 27 0
temp 30 8670K 8794K 166960K 4670 0
kqueue 14 22K 29K 166960K 54 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 43 0 40 1 0 1 1 0 8 0
rtentry 176 113 0 23 6 0 6 6 0 8 0
unpcb 144 185 0 170 1 0 1 1 0 8 0
syncache 336 7 0 7 1 0 1 1 0 8 1
tcpqe 32 1 0 1 1 0 1 1 0 8 1
tcpcb 736 59 0 54 2 0 2 2 0 8 1
arp 136 18 0 4 1 0 1 1 0 8 0
ipq 40 2 0 0 1 0 1 1 0 8 0
ipqe 40 3 0 1 1 0 1 1 0 8 0
inpcb 328 154 0 146 2 0 2 2 0 8 0
ip6q 72 1 0 0 1 0 1 1 0 8 0
nd6 152 26 0 6 1 0 1 1 0 8 0
kcovpl 48 29 0 23 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 469 0 88 30 0 30 30 0 8 4
art_table 40 470 0 88 5 0 5 5 0 8 0
art_node 32 113 0 31 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0
semapl 112 12 0 2 1 0 1 1 0 8 0
shmpl 112 3 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1798 0 262 96 0 96 96 0 8 0
ffsino 296 1798 0 262 119 0 119 119 0 8 0
nchpl 144 2140 0 427 64 0 64 64 0 8 0
vnodes 216 2068 0 0 115 0 115 115 0 8 0
namei 1024 6582 0 6582 2 0 2 2 0 8 2
percpumem 16 50 0 2 1 0 1 1 0 8 0
kstatmem 264 24 0 4 2 0 2 2 0 8 0
scxspl 216 6672 0 6672 3 2 1 2 1 8 1
plimitpl 152 128 0 106 2 0 2 2 0 8 1
sigapl 424 570 0 523 7 0 7 7 0 8 0
knotepl 120 236 0 0 8 0 8 8 0 8 0
kqueuepl 224 62 0 52 1 0 1 1 0 8 0
pipepl 344 186 0 158 4 0 4 4 0 8 0
fdescpl 528 554 0 526 4 0 4 4 0 8 0
filepl 160 2549 0 2363 13 0 13 13 0 8 3
lockfpl 104 54 0 51 1 0 1 1 0 8 0
lockfspl 48 22 0 19 1 0 1 1 0 8 0
sessionpl 144 46 0 32 1 0 1 1 0 8 0
pgrppl 48 82 0 61 1 0 1 1 0 8 0
ucredpl 104 468 0 451 1 0 1 1 0 8 0
zombiepl 144 526 0 523 1 0 1 1 0 8 0
processpl 1232 570 0 523 5 0 5 5 0 8 0
procpl 664 754 0 702 7 0 7 7 0 8 2
sockpl 752 382 0 356 5 0 5 5 0 8 1
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 114 0 0 15 0 15 15 0 8 0
mcl2k 2048 22 0 0 3 0 3 3 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 200 0 0 13 0 13 13 0 8 0
bufpl 280 2464 0 118 168 0 168 168 0 8 0
anonpl 32 9845 0 0 81 1 80 80 0 246 0
amapchunkpl 152 12837 0 12444 33 0 33 33 0 158 11
amappl16 200 2830 0 2574 17 3 14 14 0 8 0
amappl15 192 13 0 13 1 1 0 1 0 8 0
amappl14 184 43 0 43 1 0 1 1 0 8 1
amappl13 176 397 0 396 1 0 1 1 0 8 0
amappl12 168 894 0 857 3 0 3 3 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 66 0 56 1 0 1 1 0 8 0
amappl9 144 250 0 250 1 1 0 1 0 8 0
amappl8 136 22 0 20 1 0 1 1 0 8 0
amappl7 128 97 0 95 1 0 1 1 0 8 0
amappl6 120 275 0 262 1 0 1 1 0 8 0
amappl5 112 89 0 82 1 0 1 1 0 8 0
amappl4 104 386 0 363 1 0 1 1 0 8 0
amappl3 96 2092 0 2008 4 0 4 4 0 8 0
amappl2 88 522 0 469 2 0 2 2 0 8 0
amappl1 80 10429 0 9908 14 0 14 14 0 8 0
amappl 88 3402 0 3267 5 0 5 5 0 92 0
uvmvnodes 80 105 0 0 3 0 3 3 0 8 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 5 0 1 1 0 1 1 0 8 0
uaddrrnd 24 554 0 526 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 554 0 526 1 0 1 1 0 8 0
vmmpekpl 168 6908 0 6862 3 0 3 3 0 8 0
vmmpepl 168 45016 0 43146 100 0 100 100 0 357 13
vmsppl 488 553 0 524 7 1 6 6 0 8 1
rwobjpl 80 16358 0 15265 25 0 25 25 0 8 1
pdppl 4096 1115 0 1048 107 28 79 97 0 8 12
pvpl 32 17307 0 0 142 2 140 140 0 265 0
pmappl 256 553 0 524 4 1 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 281 0 31 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff8383bff0) 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: 0x73cba401ebe0, count: 10
ddb{0}> trace
x86_ipi_db(ffffffff8383bff0) 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: 0x73cba401ebe0, 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(ffffffff833af185) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833f18ec,ffffffff83348048,52e,ffffffff8340689d) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagedequeue(fffffd8004b0ab88) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324
uvm_pageclean(fffffd8004b0ab88) at uvm_pageclean+0x2ad sys/uvm/uvm_page.c:981
uvm_pagefree(fffffd8004b0ab88) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvm_anfree(fffffd80698e6348) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806cabe1d0) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a343db0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd806cdc03f0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
exit1(ffff80003c432a88,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff80003c432a88,ffff80002a343f80,ffff80002a343ed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a343f80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a343f80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ca5ede20ee0, count: 1
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833af185) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff833f18ec,ffffffff83348048,52e,ffffffff8340689d) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagedequeue(fffffd8004b0ab88) at uvm_pagedequeue+0x2dd sys/uvm/uvm_page.c:1324
uvm_pageclean(fffffd8004b0ab88) at uvm_pageclean+0x2ad sys/uvm/uvm_page.c:981
uvm_pagefree(fffffd8004b0ab88) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020
uvm_anfree(fffffd80698e6348) at uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806cabe1d0) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a343db0,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd806cdc03f0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
exit1(ffff80003c432a88,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff80003c432a88,ffff80002a343f80,ffff80002a343ed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a343f80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a343f80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ca5ede20ee0, count: -14


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If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup