uvm_fault(0xfffffd805e802d88, 0x340, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at vm_terminate+0xb0: movq 0x340(%r12),%rbx
TID PID UID PRFLAGS PFLAGS CPU COMMAND
256334 45887 0 0 0 0 syz-executor
*108854 45887 0 0 0x4000000 1 syz-executor
vm_terminate(ffff80002ebdb3d0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728
vmmioctl(a00,80045604,ffff80002ebdb3d0,3,ffff80003a40d780) at vmmioctl+0x35b sys/dev/vmm/vmm.c:254
VOP_IOCTL(fffffd806eb9dcb0,80045604,ffff80002ebdb3d0,3,fffffd80097fd410,ffff80003a40d780) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806c6aee98,80045604,ffff80002ebdb3d0,ffff80003a40d780) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003a40d780,ffff80002ebdb5b0,ffff80002ebdb500) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002ebdb5b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ebdb5b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x38fc48ff1c0, count: 8
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: uvm_fault(0xfffffd805e802d88, 0x340, 0, 1) -> e
ddb{1}> trace
vm_terminate(ffff80002ebdb3d0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728
vmmioctl(a00,80045604,ffff80002ebdb3d0,3,ffff80003a40d780) at vmmioctl+0x35b sys/dev/vmm/vmm.c:254
VOP_IOCTL(fffffd806eb9dcb0,80045604,ffff80002ebdb3d0,3,fffffd80097fd410,ffff80003a40d780) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806c6aee98,80045604,ffff80002ebdb3d0,ffff80003a40d780) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003a40d780,ffff80002ebdb5b0,ffff80002ebdb500) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002ebdb5b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ebdb5b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x38fc48ff1c0, count: -7
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002ebdb180
rbx 0
rdx 0
rcx 0xffff80003a40d780
rax 0xffff8000299edff0
r8 0xffff80003a40d780
r9 0xffff80003a40d780
r10 0x83c32b6e9fad86ee
r11 0x6191df7da19f4631
r12 0
r13 0xffff80002ebdb3d0
r14 0xffff80003a40fa40
r15 0xffff800000afc800
rip 0xffffffff829d4bd0 vm_terminate+0xb0
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002ebdb130
ss 0x10
vm_terminate+0xb0: movq 0x340(%r12),%rbx
ddb{1}> show proc
PROC (syz-executor) tid=108854 pid=45887 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003a40c2c0,0xffff80003a40c568
process=0xffff80002a3ce1c8 user=0xffff80002ebd6000, vmspace=0xfffffd805e802d88
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
91114 429463 33146 0 2 0 syz-executor
5857 206144 63887 0 2 0 syz-executor
5857 222775 63887 0 2 0x4000000 syz-executor
45887 256334 83295 0 7 0 syz-executor
*45887 108854 83295 0 7 0x4000000 syz-executor
45887 138810 83295 0 3 0x4000000 vm_terminate syz-executor
3553 462953 62432 0 2 0 syz-executor
19546 278842 48815 0 2 0 syz-executor
19546 274885 48815 0 2 0x4000000 syz-executor
45102 497251 53352 0 2 0 syz-executor
45102 492565 53352 0 3 0x4000080 sbwait syz-executor
45102 80014 53352 0 3 0x4000000 sbufrcv syz-executor
36126 310341 89341 0 3 0x80 nanoslp syz-executor
36126 92353 89341 0 3 0x4000080 ttyin syz-executor
36126 366132 89341 0 3 0x4000080 fsleep syz-executor
62432 454046 45021 0 2 0x2 syz-executor
48815 108218 45021 0 3 0x82 nanoslp syz-executor
33146 494576 45021 0 3 0x82 nanoslp syz-executor
53352 342742 45021 0 3 0x82 nanoslp syz-executor
83295 112640 45021 0 3 0x82 nanoslp syz-executor
89341 209160 45021 0 3 0x82 nanoslp syz-executor
63887 109686 45021 0 3 0x82 nanoslp syz-executor
32060 82946 45021 0 2 0x2 syz-executor
45021 474619 5336 0 3 0x82 kqread syz-executor
5336 273045 97457 0 3 0x10008a sigsusp ksh
97457 160080 76361 0 3 0x98 kqread sshd-session
76361 56761 7352 0 3 0x92 kqread sshd-session
26855 151397 1 0 3 0x100083 ttyopn getty
7352 69277 1 0 3 0x88 kqread sshd
42761 412771 17984 74 3 0x1100092 bpf pflogd
17984 296175 1 0 3 0x80 sbwait pflogd
73727 182581 64968 73 3 0x1100090 kqread syslogd
64968 158645 1 0 3 0x100082 sbwait syslogd
45727 235421 1 0 3 0x100080 kqread resolvd
68431 324933 32326 77 3 0x100092 kqread dhcpleased
61803 67468 32326 77 3 0x100092 kqread dhcpleased
32326 480973 1 0 3 0x80 kqread dhcpleased
41991 184586 0 0 3 0x14200 bored smr
34142 36600 0 0 2 0x14200 zerothread
79354 145550 0 0 3 0x14200 aiodoned aiodoned
69808 365929 0 0 3 0x14200 syncer update
87973 171860 0 0 3 0x14200 cleaner cleaner
46569 295774 0 0 3 0x14200 reaper reaper
4435 112315 0 0 3 0x14200 pgdaemon pagedaemon
13735 146176 0 0 3 0x14200 bored viomb
10412 521952 0 0 3 0x40014200 acpi0 acpi0
54085 455711 0 0 3 0x40014200 idle1
39842 260225 0 0 3 0x14200 bored softnet1
78200 502539 0 0 3 0x14200 bored softnet0
22674 10109 0 0 3 0x14200 bored systqmp
74256 370039 0 0 3 0x14200 bored systq
74479 433028 0 0 3 0x14200 tmoslp softclockmp
471 455348 0 0 3 0x40014200 tmoslp softclock
88675 251509 0 0 3 0x40014200 idle0
1 395961 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 45887 (syz-executor) thread 0xffff80003a40d780 (108854)
exclusive rwlock vm_list r = 0 (0xffff800000afc8e0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 vm_terminate+0x88 sys/dev/vmm/vmm.c:728
#3 vmmioctl+0x35b sys/dev/vmm/vmm.c:254
#4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
#6 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#8 Xsyscall+0x128
Process 45102 (syz-executor) thread 0xffff80003a009248 (492565)
exclusive rwlock sbufrcv r = 0 (0xffff80000149c9d8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 sblock+0xb6 sys/kern/uipc_socket2.c:536
#3 soreceive+0x27d sys/kern/uipc_socket.c:878
#4 recvit+0x40b sys/kern/uipc_syscalls.c:1078
#5 sys_recvmmsg+0x410 sys/kern/uipc_syscalls.c:969
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10239 11057K 11404K 166960K 13948 0
pcb 18 18K 20K 166960K 659 0
rtable 189 12K 13K 166960K 774 0
pf 34 17K 81K 166960K 238 0
ifaddr 32 5K 8K 166960K 158 0
ifgroup 51 2K 3K 166960K 285 0
sysctl 4 1K 9K 166960K 21 0
counters 68 36K 38K 166960K 304 0
ioctlops 0 0K 8K 166960K 2068 0
iov 1 4K 28K 166960K 172 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1450 91K 92K 166960K 3148 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 8 0
VM map 2 1K 1K 166960K 2 0
sem 20 137K 137K 166960K 47 0
dirhash 12 2K 2K 166960K 24 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 240K 166960K 2251 0
sigio 0 0K 0K 166960K 178 0
proc 72 115K 164K 166960K 931 0
subproc 72 4K 4K 166960K 128 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 2 0K 0K 166960K 230 0
in_multi 62 4K 7K 166960K 244 0
ether_multi 1 0K 0K 166960K 24 0
mrt 1 0K 0K 166960K 22 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 277 1235K 1235K 166960K 277 0
exec 0 0K 1K 166960K 852 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 236 161K 180K 166960K 22332 0
UVM aobj 60 10K 12K 166960K 64 0
pinsyscall 42 84K 104K 166960K 3477 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 280 0
NDP 11 0K 1K 166960K 117 0
temp 81 8680K 8929K 166960K 91585 0
kqueue 13 20K 29K 166960K 374 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 120 231 0 228 2 1 1 2 0 8 0
rtentry 176 226 0 163 6 1 5 6 0 8 0
unpcb 144 1896 0 1876 18 14 4 6 0 8 3
syncache 336 5 0 5 2 2 0 1 0 8 0
tcpqe 32 2 0 2 1 1 0 1 0 8 0
tcpcb 736 585 0 577 10 9 1 7 0 8 0
arp 136 39 0 29 1 0 1 1 0 8 0
inpcb 328 2690 0 2678 34 24 10 12 0 8 8
nd6 152 48 0 33 1 0 1 1 0 8 0
pkpcb 40 10 0 10 4 3 1 1 0 8 1
kcovpl 48 14 0 6 1 0 1 1 0 8 0
mppekey 1024 1 0 1 1 1 0 1 0 8 0
ppxss 1192 90 0 90 2 1 1 1 0 8 1
pppxif 1504 10 0 10 4 3 1 1 0 8 1
pffrag 232 22 0 13 1 0 1 1 0 482 0
pffrnode 88 15 0 7 1 0 1 1 0 8 0
pffrent 40 45 0 36 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 2 0 2 2 2 0 1 0 8 0
pfstitem 24 171 0 45 1 0 1 1 0 8 0
pfstkey 128 175 0 49 5 0 5 5 0 8 0
pfstate 448 172 0 47 14 0 14 14 0 8 0
pfrule 1344 22 0 16 2 1 1 2 0 8 0
rttmr 136 4 0 4 2 2 0 1 0 8 0
art_heap8 4096 4 0 0 4 0 4 4 0 8 0
art_heap4 256 977 0 664 34 11 23 30 0 8 0
art_table 40 981 0 664 5 0 5 5 0 8 0
art_node 32 224 0 168 1 0 1 1 0 8 0
sysvmsgpl 40 15 0 8 2 1 1 1 0 8 0
semapl 112 40 0 22 1 0 1 1 0 8 0
shmpl 112 58 0 3 2 0 2 2 0 8 0
dirhash 1024 25 0 8 3 0 3 3 0 8 0
dino2pl 256 5378 0 3871 96 0 96 96 0 8 0
ffsino 296 5378 0 3871 117 0 117 117 0 8 0
nchpl 144 8369 0 6656 65 1 64 65 0 8 0
rtmask 32 20 0 20 5 4 1 1 0 8 1
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 30041 0 30041 4 3 1 2 0 8 1
percpumem 16 167 0 118 1 0 1 1 0 8 0
vcpupl 3968 2 0 0 1 0 1 1 0 8 0
vmpool 840 3 0 1 1 0 1 1 0 8 0
kstatmem 264 182 0 156 4 1 3 3 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 13 0 13 3 3 0 1 0 8 0
scxspl 216 44075 0 44075 12 11 1 8 1 8 1
plimitpl 152 666 0 647 1 0 1 1 0 8 0
sigapl 424 2495 0 2448 7 1 6 7 0 8 0
knotepl 120 592 0 0 17 0 17 17 0 8 0
kqueuepl 224 802 0 793 8 5 3 3 0 8 2
pipepl 344 390 0 363 10 7 3 9 0 8 0
fdescpl 528 2473 0 2442 3 0 3 3 0 8 0
filepl 160 17037 0 16813 38 19 19 20 0 8 8
lockfpl 104 663 0 661 1 0 1 1 0 8 0
lockfspl 48 260 0 258 1 0 1 1 0 8 0
sessionpl 144 29 0 20 1 0 1 1 0 8 0
pgrppl 48 173 0 156 1 0 1 1 0 8 0
ucredpl 104 2478 0 2464 1 0 1 1 0 8 0
zombiepl 144 3216 0 3216 1 0 1 1 0 8 1
processpl 1232 2495 0 2448 5 1 4 5 0 8 0
procpl 664 6026 0 5971 6 0 6 6 0 8 0
sosppl 176 14 0 14 4 3 1 1 0 8 1
sockpl 752 4884 0 4849 63 50 13 24 0 8 8
mcl64k 65536 25 0 0 4 0 4 4 0 8 0
mcl16k 16384 8 0 0 1 0 1 1 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 117 0 0 15 0 15 15 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 30 0 0 4 0 4 4 0 8 0
mtagpl 96 33 0 0 1 0 1 1 0 8 0
mbufpl 256 269 0 0 16 0 16 16 0 8 0
bufpl 280 17153 0 11016 439 0 439 439 0 8 0
anonpl 32 11898 0 0 96 0 96 96 0 246 0
amapchunkpl 152 86063 0 85600 62 22 40 40 0 158 11
amappl16 200 7063 0 7028 54 39 15 25 0 8 4
amappl15 192 63 0 63 1 1 0 1 0 8 0
amappl14 184 4 0 4 1 1 0 1 0 8 0
amappl13 176 594 0 593 1 0 1 1 0 8 0
amappl12 168 2866 0 2826 3 0 3 3 0 8 0
amappl11 160 24 0 23 2 1 1 1 0 8 0
amappl10 152 65 0 51 1 0 1 1 0 8 0
amappl9 144 250 0 250 1 1 0 1 0 8 0
amappl8 136 24 0 21 1 0 1 1 0 8 0
amappl7 128 124 0 123 1 0 1 1 0 8 0
amappl6 120 350 0 337 1 0 1 1 0 8 0
amappl5 112 97 0 86 1 0 1 1 0 8 0
amappl4 104 474 0 445 1 0 1 1 0 8 0
amappl3 96 15346 0 15247 5 1 4 4 0 8 0
amappl2 88 588 0 526 2 0 2 2 0 8 0
amappl1 80 18255 0 17670 14 0 14 14 0 8 0
amappl 88 21178 0 21021 5 0 5 5 0 92 0
uvmvnodes 80 158 0 0 4 0 4 4 0 8 0
dma65536 65536 1 0 1 1 1 0 1 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 128 257 0 257 5 5 0 1 0 8 0
dma64 64 9 0 9 3 3 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 63 0 4 2 0 2 2 0 8 0
uaddrrnd 24 2473 0 2442 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2473 0 2442 1 0 1 1 0 8 0
vmmpekpl 168 19764 0 19717 3 0 3 3 0 8 0
vmmpepl 168 159589 0 157688 128 29 99 107 0 357 3
vmsppl 488 2472 0 2442 7 2 5 5 0 8 0
rwobjpl 80 41645 0 40508 35 2 33 33 0 8 0
pdppl 4096 4959 0 4888 113 40 73 83 0 8 2
pvpl 32 21074 0 0 170 1 169 169 0 265 0
pmappl 256 2475 0 2443 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 329 0 69 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83812ff0) 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
end of kernel
end trace frame: 0x70d6d4c63fe0, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff83812ff0) 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
end of kernel
end trace frame: 0x70d6d4c63fe0, count: -3
ddb{0}> machine ddbcpu 1
Stopped at vm_terminate+0xb0: movq 0x340(%r12),%rbx
vm_terminate(ffff80002ebdb3d0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728
vmmioctl(a00,80045604,ffff80002ebdb3d0,3,ffff80003a40d780) at vmmioctl+0x35b sys/dev/vmm/vmm.c:254
VOP_IOCTL(fffffd806eb9dcb0,80045604,ffff80002ebdb3d0,3,fffffd80097fd410,ffff80003a40d780) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806c6aee98,80045604,ffff80002ebdb3d0,ffff80003a40d780) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003a40d780,ffff80002ebdb5b0,ffff80002ebdb500) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002ebdb5b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ebdb5b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x38fc48ff1c0, count: 8
ddb{1}> trace
vm_terminate(ffff80002ebdb3d0) at vm_terminate+0xb0 sys/dev/vmm/vmm.c:728
vmmioctl(a00,80045604,ffff80002ebdb3d0,3,ffff80003a40d780) at vmmioctl+0x35b sys/dev/vmm/vmm.c:254
VOP_IOCTL(fffffd806eb9dcb0,80045604,ffff80002ebdb3d0,3,fffffd80097fd410,ffff80003a40d780) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806c6aee98,80045604,ffff80002ebdb3d0,ffff80003a40d780) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003a40d780,ffff80002ebdb5b0,ffff80002ebdb500) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002ebdb5b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ebdb5b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x38fc48ff1c0, count: -7