panic() at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff8220282e,ffffffff821f0ad1,2b2,ffffffff821d1b09) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: 11
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
malloc: allocation too large, type = 2, size = 18446744073709551296
ddb{1}> 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
__assert(ffffffff8220282e,ffffffff821f0ad1,2b2,ffffffff821d1b09) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: -4
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800023daf680
rbx 0xffff800023daf730
rdx 0xffff800020ab0290
rcx 0
rax 0
r8 0xffffffff8216e5cf kprintf+0x16f
r9 0x1
r10 0x25
r11 0xc2348e9768606ebd
r12 0x3000000008
r13 0xffff800023daf690
r14 0x104
r15 0x1
rip 0xffffffff81f247d8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800023daf670
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=266872 stat=onproc
flags process=0 proc=0
pri=79, usrpri=79, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab0ee8,0xffffffff82654bc8
process=0xffff800020a8bc10 user=0xffff800023daa000, vmspace=0xfffffd806e7e2a18
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*16838 266872 23559 0 7 0 syz-executor.0
41866 361085 74508 0 2 0 syz-executor.1
41866 501199 74508 0 3 0x4000080 fsleep syz-executor.1
41866 392925 74508 0 7 0x4000000 syz-executor.1
81863 89582 0 0 3 0x14200 bored sosplice
2999 171914 1 0 3 0x100083 ttyin getty
74508 491897 88670 0 3 0x82 nanosleep syz-executor.1
23559 153742 88670 0 3 0x82 nanosleep syz-executor.0
88670 466077 11570 0 3 0x82 thrsleep syz-fuzzer
88670 173865 11570 0 3 0x4000082 nanosleep syz-fuzzer
88670 479501 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 378394 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 140451 11570 0 3 0x4000082 nanosleep syz-fuzzer
88670 272581 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 478686 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 57588 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 400528 11570 0 3 0x4000082 thrsleep syz-fuzzer
88670 251624 11570 0 3 0x4000082 kqread syz-fuzzer
11570 445541 66026 0 3 0x10008a pause ksh
66026 214124 97147 0 3 0x92 select sshd
97147 517841 1 0 3 0x80 select sshd
4592 72741 55030 74 3 0x100092 bpf pflogd
55030 472837 1 0 3 0x80 netio pflogd
16396 399816 85356 73 3 0x100090 kqread syslogd
85356 308416 1 0 3 0x100082 netio syslogd
25114 34875 1 77 3 0x100090 poll dhclient
93705 139168 1 0 3 0x80 poll dhclient
393 215810 0 0 2 0x14200 zerothread
51166 92489 0 0 3 0x14200 aiodoned aiodoned
65007 149764 0 0 3 0x14200 syncer update
95467 78791 0 0 3 0x14200 cleaner cleaner
62047 49484 0 0 3 0x14200 reaper reaper
26447 367465 0 0 3 0x14200 pgdaemon pagedaemon
80960 27899 0 0 3 0x14200 bored crynlk
42742 419801 0 0 3 0x14200 bored crypto
36442 12442 0 0 3 0x40014200 acpi0 acpi0
29975 221314 0 0 3 0x40014200 idle1
11426 434461 0 0 3 0x14200 bored softnet
91977 524167 0 0 3 0x14200 bored systqmp
95395 351462 0 0 3 0x14200 bored systq
91691 36716 0 0 3 0x40014200 bored softclock
5396 138865 0 0 3 0x40014200 idle0
8587 375830 0 0 3 0x14200 bored smr
1 395890 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 41866 (syz-executor.1) thread 0xffff800020ab0ee8 (392925)
shared rwlock vmlistlock r = 0 (0xffff80000066f478)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 vm_get_info+0x39 sys/arch/amd64/amd64/vmm.c:3712
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82620168)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9519 6414K 6866K 78643K 11639 0 0
pcb 13 8K 8K 78643K 97 0 0
rtable 110 4K 4K 78643K 320 0 0
ifaddr 59 13K 13K 78643K 124 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1499 0 0
iov 0 0K 16K 78643K 24 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1215 76K 77K 78643K 1573 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 7 0 0
VM map 2 1K 1K 78643K 4 0 0
sem 12 0K 0K 78643K 32 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1809 196K 290K 78643K 12843 0 0
file desc 6 17K 25K 78643K 486 0 0
sigio 0 0K 0K 78643K 7 0 0
proc 60 63K 95K 78643K 489 0 0
subproc 32 2K 2K 78643K 34 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 56 0 0
in_multi 33 2K 2K 78643K 48 0 0
ether_multi 1 0K 0K 78643K 1 0 0
mrt 1 0K 0K 78643K 2 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 60 265K 265K 78643K 60 0 0
exec 0 0K 1K 78643K 240 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 97 21K 25K 78643K 2455 0 0
UVM aobj 25 4K 4K 78643K 27 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 84 0 0
NDP 12 0K 0K 78643K 32 0 0
temp 156 3551K 3615K 78643K 8843 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 29 0 27 1 0 1 1 0 8 0
rtentry 112 47 0 3 2 0 2 2 0 8 0
unpcb 120 171 0 161 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 4998 0 4998 1 1 0 1 0 8 0
tcpcb 544 116 0 112 1 0 1 1 0 8 0
inpcb 280 358 0 351 2 1 1 2 0 8 0
nd6 48 4 0 0 1 0 1 1 0 8 0
ppxss 1128 16 0 16 1 0 1 1 0 8 1
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 26 0 6 1 0 1 1 0 8 0
pfstkey 112 26 0 6 1 0 1 1 0 8 0
pfstate 328 26 0 5 2 0 2 2 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 212 0 0 14 0 14 14 0 8 0
art_table 32 213 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
sysvmsgpl 40 11 0 9 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 28 0 18 1 0 1 1 0 8 0
shmpl 112 25 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2136 0 734 46 0 46 46 0 8 0
ffsino 272 2136 0 734 94 0 94 94 0 8 0
nchpl 144 3028 0 1409 61 0 61 61 0 8 0
uvmvnodes 72 2410 0 0 44 0 44 44 0 8 0
vnodes 208 2410 0 0 127 0 127 127 0 8 0
namei 1024 8542 0 8542 2 1 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
vmpool 552 2 0 2 1 1 0 1 0 8 0
scsiplug 64 3 0 3 2 2 0 1 0 8 0
scxspl 192 8494 0 8494 9 8 1 7 0 8 1
plimitpl 152 49 0 41 1 0 1 1 0 8 0
sigapl 432 687 0 671 3 1 2 3 0 8 0
futexpl 56 6172 0 6171 1 0 1 1 0 8 0
knotepl 112 104 0 85 1 0 1 1 0 8 0
kqueuepl 104 75 0 73 1 0 1 1 0 8 0
pipepl 112 350 0 329 1 0 1 1 0 8 0
fdescpl 488 688 0 671 3 0 3 3 0 8 0
filepl 152 3775 0 3671 7 2 5 5 0 8 1
lockfpl 104 149 0 147 1 0 1 1 0 8 0
lockfspl 48 43 0 41 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 22 0 11 1 0 1 1 0 8 0
ucredpl 96 564 0 555 1 0 1 1 0 8 0
zombiepl 144 671 0 671 2 1 1 1 0 8 1
processpl 896 704 0 671 4 0 4 4 0 8 0
procpl 632 1688 0 1644 7 2 5 5 0 8 1
sosppl 128 3 0 3 1 0 1 1 0 8 1
sockpl 384 564 0 545 5 2 3 3 0 8 1
mcl64k 65536 10 0 0 2 0 2 2 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 8 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 195 0 0 24 0 24 24 0 8 0
mtagpl 80 9 0 0 1 0 1 1 0 8 0
mbufpl 256 232 0 0 14 0 14 14 0 8 0
bufpl 256 7161 0 1314 366 0 366 366 0 8 0
anonpl 16 71316 0 58465 81 13 68 68 0 124 16
amapchunkpl 152 3605 0 3490 12 6 6 9 0 158 0
amappl16 192 3124 0 2420 54 11 43 48 0 8 7
amappl14 176 264 0 259 1 0 1 1 0 8 0
amappl12 160 22 0 20 1 0 1 1 0 8 0
amappl11 152 53 0 38 1 0 1 1 0 8 0
amappl10 144 233 0 228 1 0 1 1 0 8 0
amappl9 136 616 0 610 1 0 1 1 0 8 0
amappl8 128 157 0 138 1 0 1 1 0 8 0
amappl7 120 259 0 254 1 0 1 1 0 8 0
amappl6 112 71 0 63 1 0 1 1 0 8 0
amappl5 104 148 0 132 1 0 1 1 0 8 0
amappl4 96 941 0 908 1 0 1 1 0 8 0
amappl3 88 117 0 112 1 0 1 1 0 8 0
amappl2 80 4610 0 4539 3 1 2 3 0 8 0
amappl1 72 24627 0 24184 24 13 11 20 0 8 0
amappl 80 1942 0 1901 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
dma64 64 259 0 259 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 1 0 8 0
aobjpl 64 26 0 2 1 0 1 1 0 8 0
uaddrrnd 24 690 0 671 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 690 0 671 1 0 1 1 0 8 0
vmmpekpl 168 9485 0 9456 2 0 2 2 0 8 0
vmmpepl 168 88965 0 87062 126 30 96 96 0 357 13
vmsppl 368 687 0 671 2 0 2 2 0 8 0
pdppl 4096 1387 0 1346 6 0 6 6 0 8 0
pvpl 32 224791 0 208782 194 28 166 166 0 265 35
pmappl 232 689 0 673 2 1 1 2 0 8 0
extentpl 40 38 0 22 1 0 1 1 0 8 0
phpool 112 535 0 4 16 0 16 16 0 8 0