login: panic: uvm_mapent_clone: no space in map for entry in empty map
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*411888 59840 0 0x2 0 0 syz-executor4532
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
uvm_mapent_clone(ffff8000006a2200,6e9000,4000,0,7,7) at uvm_mapent_clone+0x1de sys/uvm/uvm_map.c:3708
uvm_share(ffff8000006a2200,10000,7,fffffd803f012aa0,20040000,80000000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3766 [inline]
uvm_share(ffff8000006a2200,10000,7,fffffd803f012aa0,20040000,80000000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668
vm_impl_init_vmx(ffff80001488da68,ffff8000ffff47a8) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1269
vm_create(ffff800000a69000,ffff8000ffff47a8) at vm_create+0x193 vm_impl_init sys/arch/amd64/amd64/vmm.c:1384 [inline]
vm_create(ffff800000a69000,ffff8000ffff47a8) at vm_create+0x193 sys/arch/amd64/amd64/vmm.c:1173
VOP_IOCTL(fffffd80366b5750,c5005601,ffff800000a69000,1,fffffd803f7c6c60,ffff8000ffff47a8) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd8036211698,c5005601,ffff800000a69000,ffff8000ffff47a8) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff8000ffff47a8,ffff8000148da358,ffff8000148da3a0) at sys_ioctl+0x5b9
syscall(ffff8000148da420) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3930, count: 4
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
uvm_mapent_clone: no space in map for entry in empty map
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
uvm_mapent_clone(ffff8000006a2200,6e9000,4000,0,7,7) at uvm_mapent_clone+0x1de sys/uvm/uvm_map.c:3708
uvm_share(ffff8000006a2200,10000,7,fffffd803f012aa0,20040000,80000000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3766 [inline]
uvm_share(ffff8000006a2200,10000,7,fffffd803f012aa0,20040000,80000000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668
vm_impl_init_vmx(ffff80001488da68,ffff8000ffff47a8) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1269
vm_create(ffff800000a69000,ffff8000ffff47a8) at vm_create+0x193 vm_impl_init sys/arch/amd64/amd64/vmm.c:1384 [inline]
vm_create(ffff800000a69000,ffff8000ffff47a8) at vm_create+0x193 sys/arch/amd64/amd64/vmm.c:1173
VOP_IOCTL(fffffd80366b5750,c5005601,ffff800000a69000,1,fffffd803f7c6c60,ffff8000ffff47a8) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd8036211698,c5005601,ffff800000a69000,ffff8000ffff47a8) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff8000ffff47a8,ffff8000148da358,ffff8000148da3a0) at sys_ioctl+0x5b9
syscall(ffff8000148da420) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3930, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff8000148d9d80
rbx 0xffff8000148d9e30
rdx 0x2
rcx 0x1
rax 0x1
r8 0xffff8000148d9d40
r9 0x1
r10 0x69b3c07f03dc44fd
r11 0x20f10b71a5c2912e
r12 0x3000000008
r13 0xffff8000148d9d90
r14 0x100
r15 0x1
rip 0xffffffff8115b788 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000148d9d70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor4532) pid=411888 stat=onproc
flags process=2<EXEC> proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff4298,0xffffffff82580b38
process=0xffff8000148a2000 user=0xffff8000148d5000, vmspace=0xfffffd803f012aa0
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*59840 411888 10447 0 7 0x2 syz-executor4532
10447 323497 89961 0 3 0x10008a pause ksh
89961 4455 92224 0 2 0x12 sshd
18886 94387 1 0 3 0x100083 ttyin getty
92224 309344 1 0 3 0x80 select sshd
82368 165357 33115 73 3 0x100090 kqread syslogd
33115 195801 1 0 3 0x100082 netio syslogd
60685 406701 1 77 3 0x100090 poll dhclient
20929 315437 1 0 3 0x80 poll dhclient
78006 396907 0 0 2 0x14200 zerothread
52822 470921 0 0 3 0x14200 aiodoned aiodoned
22419 262092 0 0 3 0x14200 syncer update
81467 160721 0 0 3 0x14200 cleaner cleaner
81081 372788 0 0 3 0x14200 reaper reaper
74286 201702 0 0 3 0x14200 pgdaemon pagedaemon
87987 27645 0 0 3 0x14200 bored crynlk
75965 473571 0 0 3 0x14200 bored crypto
74415 299902 0 0 3 0x40014200 acpi0 acpi0
85266 472280 0 0 3 0x14200 bored softnet
35717 219567 0 0 3 0x14200 bored systqmp
43025 490235 0 0 3 0x14200 bored systq
52315 78643 0 0 3 0x40014200 bored softclock
19637 204899 0 0 3 0x40014200 idle0
28425 341112 0 0 3 0x14200 bored smr
1 311984 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 Kern Lim
devbuf 9438 6318K 6319K 78643K 10535 0 0
pcb 13 8K 8K 78643K 13 0 0
rtable 61 1K 2K 78643K 115 0 0
ifaddr 24 7K 7K 78643K 24 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 1 2K 2K 78643K 14 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1180 74K 74K 78643K 1185 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 1K 78643K 2 0 0
VM map 3 0K 0K 78643K 3 0 0
sem 2 0K 0K 78643K 2 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1794 195K 288K 78643K 12646 0 0
file desc 1 0K 0K 78643K 1 0 0
proc 47 38K 46K 78643K 278 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
in_multi 11 0K 0K 78643K 11 0 0
ether_multi 1 0K 0K 78643K 1 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 18 79K 79K 78643K 18 0 0
exec 0 0K 1K 78643K 151 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 52 2K 3K 78643K 685 0 0
UVM aobj 2 2K 2K 78643K 2 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
NDP 3 0K 0K 78643K 3 0 0
temp 21 3543K 3607K 78643K 1686 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 2 0 0 1 0 1 1 0 8 0
rtpcb 96 15 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 280 5 0 5 1 0 1 1 0 8 1
tcpcb 640 8 0 5 1 0 1 1 0 8 0
inpcb 280 22 0 16 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1389 0 15 45 0 45 45 0 8 0
ffsino 240 1389 0 15 81 0 81 81 0 8 0
nchpl 144 1564 0 31 57 0 57 57 0 8 0
uvmvnodes 72 1398 0 0 26 0 26 26 0 8 0
vnodes 208 1398 0 0 74 0 74 74 0 8 0
namei 1024 3453 0 3453 1 0 1 1 0 8 1
vmpool 520 1 0 0 1 0 1 1 0 8 0
scxspl 208 2385 0 2385 2 0 2 2 0 8 2
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 432 175 0 165 2 0 2 2 0 8 0
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 104 1 0 0 1 0 1 1 0 8 0
pipepl 128 114 0 107 1 0 1 1 0 8 0
fdescpl 424 176 0 165 2 0 2 2 0 8 0
filepl 120 834 0 790 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 128 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 47 0 40 1 0 1 1 0 8 0
zombiepl 144 165 0 165 1 0 1 1 0 8 1
processpl 896 190 0 165 4 0 4 4 0 8 0
procpl 648 190 0 165 3 0 3 3 0 8 0
sockpl 384 64 0 48 2 0 2 2 0 8 0
mcl4k 4096 10 0 10 1 0 1 1 0 8 1
mcl2k 2048 5764 0 5737 6 0 6 6 0 8 2
mtagpl 80 2 0 2 1 1 0 1 0 8 0
mbufpl 256 9855 0 9813 4 0 4 4 0 8 0
bufpl 280 2046 0 240 129 0 129 129 0 8 0
anonpl 16 16860 0 15750 7 2 5 7 0 62 0
amapchunkpl 152 462 0 427 2 0 2 2 0 158 0
amappl16 192 75 0 69 1 0 1 1 0 8 0
amappl14 176 35 0 31 1 0 1 1 0 8 0
amappl12 160 4 0 4 1 0 1 1 0 8 1
amappl11 152 41 0 30 1 0 1 1 0 8 0
amappl10 144 1 0 1 1 0 1 1 0 8 1
amappl9 136 366 0 365 1 0 1 1 0 8 0
amappl8 128 81 0 77 1 0 1 1 0 8 0
amappl7 120 16 0 15 1 0 1 1 0 8 0
amappl6 112 43 0 39 1 0 1 1 0 8 0
amappl5 104 157 0 146 1 0 1 1 0 8 0
amappl4 96 394 0 370 1 0 1 1 0 8 0
amappl3 88 102 0 97 1 0 1 1 0 8 0
amappl2 80 708 0 658 2 0 2 2 0 8 0
amappl1 72 12049 0 11673 16 6 10 16 0 8 1
amappl 80 353 0 333 1 0 1 1 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 177 0 165 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 177 0 165 1 0 1 1 0 8 0
vmmpekpl 168 5282 0 5267 1 0 1 1 0 8 0
vmmpepl 168 25131 0 24389 48 6 42 48 0 357 9
vmsppl 272 175 0 165 1 0 1 1 0 8 0
pdppl 4096 360 0 330 5 0 5 5 0 8 0
pvpl 32 70274 0 67526 26 0 26 26 0 265 3
pmappl 200 176 0 165 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 111 0 2 4 0 4 4 0 8 0