panic: kmmaplk: lock not shared
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*483507 66720 0 0x2 0 0 syz-executor1354427187
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202
rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline]
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593
sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111
kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffda6a0, count: 6
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: lock not shared
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202
rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline]
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593
sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111
kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffda6a0, count: -9
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002163b3e0
rbx 0xffffffff82a80478 kernel_map_store+0x8
rdx 0x3fd
rcx 0
rax 0x20
r8 0x101010101010101
r9 0x8080808080808080
r10 0x903c50c062659b4b
r11 0xf0a6f65a852d09d3
r12 0
r13 0xffffffff82a80470 kernel_map_store
r14 0
r15 0x1
rip 0xffffffff8120dfc8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002163b3d0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor1354427187) pid=483507 stat=onproc
flags process=2<EXEC> proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000215ed7b0,0xffffffff829b7c50
process=0xffff8000215e1780 user=0xffff800021636000, vmspace=0xfffffd807f017220
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*66720 483507 36050 0 7 0x2 syz-executor1354427187
36050 482628 48873 0 3 0x10008a sigsusp ksh
48873 88675 1011 0 2 0x12 sshd
11568 191825 1 0 3 0x100083 ttyin getty
1011 194989 1 0 3 0x88 kqread sshd
50387 312660 70434 73 3 0x1100090 kqread syslogd
70434 366160 1 0 3 0x100082 netio syslogd
43519 123967 1 0 3 0x100080 kqread resolvd
89484 66170 98974 77 3 0x100092 kqread dhcpleased
81466 282894 98974 77 3 0x100092 kqread dhcpleased
98974 145261 1 0 3 0x80 kqread dhcpleased
47189 203982 0 0 3 0x14200 bored smr
40118 295401 0 0 2 0x14200 zerothread
58323 442421 0 0 3 0x14200 aiodoned aiodoned
13294 489146 0 0 3 0x14200 syncer update
4122 32926 0 0 3 0x14200 cleaner cleaner
21573 395550 0 0 3 0x14200 reaper reaper
2094 308781 0 0 3 0x14200 pgdaemon pagedaemon
71813 52870 0 0 3 0x14200 bored viomb
82877 212491 0 0 3 0x40014200 acpi0 acpi0
77110 450145 0 0 3 0x14200 bored softnet
76614 95174 0 0 3 0x14200 bored systqmp
80844 376647 0 0 3 0x14200 bored systq
5086 375631 0 0 3 0x40014200 bored softclock
86433 418749 0 0 3 0x40014200 idle0
1 480229 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 10131 6381K 6412K 78643K 11221 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 114 0
ifaddr 24 7K 7K 78643K 24 0
counters 19 16K 16K 78643K 19 0
ioctlops 0 0K 2K 78643K 25 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1166 73K 73K 78643K 1179 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 0K 0K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 1 0K 0K 78643K 1 0
proc 55 54K 55K 78643K 226 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
exec 0 0K 2K 78643K 406 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 73 3K 5K 78643K 1915 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
temp 20 4690K 4745K 78643K 3094 0
kqueue 11 16K 18K 78643K 24 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 20 0 17 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 88 2 0 0 1 0 1 1 0 8 0
inpcb 304 25 0 19 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
dino2pl 256 1415 0 38 87 0 87 87 0 8 0
ffsino 240 1415 0 38 81 0 81 81 0 8 0
nchpl 144 1590 0 47 58 0 58 58 0 8 0
uvmvnodes 80 1424 0 0 30 0 30 30 0 8 0
vnodes 224 1424 0 0 84 0 84 84 0 8 0
namei 1024 4181 0 4181 2 1 1 1 0 8 1
scxspl 216 3659 0 3659 2 1 1 2 0 8 1
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 300 0 274 4 0 4 4 0 8 0
knotepl 120 6209 0 6178 3 1 2 2 0 8 1
kqueuepl 184 20 0 13 1 0 1 1 0 8 0
pipepl 304 82 0 79 2 1 1 1 0 8 0
fdescpl 432 287 0 274 2 0 2 2 0 8 0
filepl 120 1028 0 975 2 0 2 2 0 8 0
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 274 0 274 2 1 1 1 0 8 1
processpl 1000 300 0 274 4 0 4 4 0 8 0
procpl 672 300 0 274 3 0 3 3 0 8 0
sockpl 448 78 0 56 3 0 3 3 0 8 0
mcl8k 8192 9 0 9 2 1 1 1 0 8 1
mcl4k 4096 5 0 5 2 1 1 1 0 8 1
mcl2k 2048 5617 0 5589 7 1 6 6 0 8 2
mtagpl 96 4 0 4 1 1 0 1 0 8 0
mbufpl 256 10209 0 10142 6 0 6 6 0 8 0
bufpl 288 1932 0 86 132 0 132 132 0 8 0
anonpl 24 39309 0 37268 16 2 14 15 0 188 1
amapchunkpl 152 3750 0 3623 7 1 6 7 0 158 0
amappl16 200 28 0 27 2 1 1 1 0 8 0
amappl15 192 62 0 59 1 0 1 1 0 8 0
amappl13 176 32 0 31 2 1 1 1 0 8 0
amappl12 168 7 0 7 2 1 1 1 0 8 1
amappl11 160 43 0 33 1 0 1 1 0 8 0
amappl9 144 396 0 394 1 0 1 1 0 8 0
amappl8 136 350 0 347 1 0 1 1 0 8 0
amappl7 128 61 0 58 1 0 1 1 0 8 0
amappl6 120 109 0 96 1 0 1 1 0 8 0
amappl5 112 263 0 254 1 0 1 1 0 8 0
amappl4 104 590 0 571 1 0 1 1 0 8 0
amappl3 96 117 0 108 1 0 1 1 0 8 0
amappl2 88 356 0 319 1 0 1 1 0 8 0
amappl1 80 8336 0 7991 9 1 8 9 0 8 0
amappl 88 1653 0 1596 2 0 2 2 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 287 0 274 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 287 0 274 1 0 1 1 0 8 0
vmmpekpl 168 5868 0 5853 1 0 1 1 0 8 0
vmmpepl 168 25223 0 24468 39 2 37 38 0 357 3
vmsppl 272 286 0 274 2 1 1 2 0 8 0
rwobjpl 24 9170 0 7244 12 0 12 12 0 8 0
pdppl 4096 580 0 548 53 21 32 40 0 8 0
pvpl 32 127320 0 123535 35 1 34 34 0 265 2
pmappl 216 286 0 274 1 0 1 1 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 391 0 28 11 0 11 11 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:440
panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202
rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline]
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593
sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111
kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffda6a0, count: -9
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff825b9701) at panic+0x161 sys/kern/subr_prf.c:202
rw_exit_read(ffffffff82a80478) at rw_exit_read+0x154 sys/kern/kern_rwlock.c:398
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 vm_map_upgrade_ln sys/uvm/uvm_map.c:5540 [inline]
uvm_map_fill_vmmap(ffffffff82a80470,ffff800000bb1000,ffff80002163b568) at uvm_map_fill_vmmap+0xf6 sys/uvm/uvm_map.c:5593
sysctl_proc_vmmap(ffff80002163b948,1,200006c0,ffff80002163b978,ffff8000215eda50) at sysctl_proc_vmmap+0x229 sys/kern/kern_sysctl.c:2111
kern_sysctl(ffff80002163b944,2,200006c0,ffff80002163b978,0,fffffffffffffe97,6d5e7431cfb019bc) at kern_sysctl+0xfd sys/kern/kern_sysctl.c:449
sys_sysctl(ffff8000215eda50,ffff80002163b9e8,ffff80002163ba40) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:249
syscall(ffff80002163bab0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffda6a0, count: -9
ddb>