panic: malloc: allocation too large, type = 29, size = 13002741572
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*154224 21123 0 0x2 0 0 syz-executor1390
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8247fb14) at panic+0x161 sys/kern/subr_prf.c:202
malloc(307061744,1d,1) at malloc+0xa34 sys/kern/kern_malloc.c:345
sys_shmat(ffff80002165ea90,ffff80002167d498,ffff80002167d4f0) at sys_shmat+0x7f sys/kern/sysv_shm.c:228
syscall(ffff80002167d560) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdc1a0, count: 9
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: malloc: allocation too large, type = 29, size = 13002741572
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8247fb14) at panic+0x161 sys/kern/subr_prf.c:202
malloc(307061744,1d,1) at malloc+0xa34 sys/kern/kern_malloc.c:345
sys_shmat(ffff80002165ea90,ffff80002167d498,ffff80002167d4f0) at sys_shmat+0x7f sys/kern/sysv_shm.c:228
syscall(ffff80002167d560) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdc1a0, count: -6
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002167d280
rbx 0
rdx 0x8b
rcx 0x2
rax 0x43
r8 0xffffffff81c693b5 kprintf+0x145
r9 0x1
r10 0xdacc8454756b98fe
r11 0xb373cb11a7f0bc76
r12 0
r13 0x307061744
r14 0
r15 0x1
rip 0xffffffff81a08b68 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002167d270
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor1390) pid=154224 stat=onproc
flags process=2<EXEC> proc=0
pri=52, usrpri=52, nice=20
forw=0xffffffffffffffff, list=0xffff80002165e7f0,0xffffffff82915da8
process=0xffff800021641b68 user=0xffff800021678000, vmspace=0xfffffd806eece778
estcpu=2, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*21123 154224 32364 0 7 0x2 syz-executor1390
32364 241433 65339 0 3 0x10008a sigsusp ksh
65339 174058 87910 0 3 0x9a kqread sshd
6975 406453 1 0 3 0x100083 ttyin getty
87910 43344 1 0 3 0x88 kqread sshd
6370 74643 53757 73 3 0x100090 kqread syslogd
53757 80923 1 0 3 0x100082 netio syslogd
39004 332412 1 0 3 0x100080 kqread resolvd
86958 1611 13428 77 3 0x100092 kqread dhcpleased
50023 415540 13428 77 3 0x100092 kqread dhcpleased
13428 473042 1 0 3 0x80 kqread dhcpleased
85373 356448 0 0 3 0x14200 bored smr
48839 193071 0 0 2 0x14200 zerothread
84623 384448 0 0 3 0x14200 aiodoned aiodoned
79520 386670 0 0 3 0x14200 syncer update
31195 88298 0 0 3 0x14200 cleaner cleaner
38920 53640 0 0 3 0x14200 reaper reaper
51946 510045 0 0 3 0x14200 pgdaemon pagedaemon
22308 187493 0 0 3 0x14200 bored viomb
41970 49771 0 0 3 0x40014200 acpi0 acpi0
15430 469997 0 0 3 0x14200 bored softnet
505 15207 0 0 3 0x14200 bored systqmp
89333 10893 0 0 3 0x14200 bored systq
93889 387363 0 0 3 0x40014200 bored softclock
99008 271854 0 0 3 0x40014200 idle0
1 126179 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 10091 6342K 6373K 78643K 11181 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 108 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 5 0
vnodes 1182 74K 74K 78643K 1187 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 12598 0
file desc 1 0K 0K 78643K 1 0
proc 55 54K 55K 78643K 222 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 19 95K 95K 78643K 19 0
exec 0 0K 2K 78643K 312 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 1424 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 18 4173K 4237K 78643K 1723 0
kqueue 11 16K 16K 78643K 20 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 17 0 14 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 128 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 1 0 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 1404 0 22 87 0 87 87 0 8 0
ffsino 240 1404 0 22 82 0 82 82 0 8 0
nchpl 144 1578 0 38 58 0 58 58 0 8 0
uvmvnodes 72 1413 0 0 26 0 26 26 0 8 0
vnodes 224 1413 0 0 84 0 84 84 0 8 0
namei 1024 3858 0 3858 1 0 1 1 0 8 1
scxspl 216 3338 0 3338 2 1 1 2 0 8 1
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 225 0 199 4 0 4 4 0 8 0
knotepl 112 2876 0 2848 1 0 1 1 0 8 0
kqueuepl 184 16 0 9 1 0 1 1 0 8 0
pipepl 304 62 0 59 1 0 1 1 0 8 0
fdescpl 432 212 0 199 3 0 3 3 0 8 0
filepl 120 947 0 894 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 144 199 0 199 1 0 1 1 0 8 1
processpl 1000 225 0 199 5 1 4 5 0 8 0
procpl 672 225 0 199 3 0 3 3 0 8 0
sockpl 448 75 0 53 3 0 3 3 0 8 0
mcl8k 8192 9 0 9 1 0 1 1 0 8 1
mcl4k 4096 5 0 5 1 0 1 1 0 8 1
mcl2k 2048 5648 0 5612 8 1 7 8 0 8 1
mtagpl 96 3 0 3 1 1 0 1 0 8 0
mbufpl 256 9660 0 9585 8 1 7 8 0 8 1
bufpl 280 1912 0 88 131 0 131 131 0 8 0
anonpl 24 29222 0 27197 16 3 13 16 0 188 0
amapchunkpl 152 2686 0 2560 7 1 6 7 0 158 0
amappl16 200 25 0 24 2 1 1 1 0 8 0
amappl15 192 58 0 54 1 0 1 1 0 8 0
amappl13 176 16 0 15 1 0 1 1 0 8 0
amappl12 168 7 0 7 1 1 0 1 0 8 0
amappl11 160 56 0 44 1 0 1 1 0 8 0
amappl10 152 8 0 8 1 1 0 1 0 8 0
amappl9 144 199 0 196 1 0 1 1 0 8 0
amappl8 136 246 0 244 1 0 1 1 0 8 0
amappl7 128 29 0 28 1 0 1 1 0 8 0
amappl6 120 33 0 28 1 0 1 1 0 8 0
amappl5 112 231 0 216 1 0 1 1 0 8 0
amappl4 104 469 0 450 1 0 1 1 0 8 0
amappl3 96 145 0 132 1 0 1 1 0 8 0
amappl2 88 269 0 237 1 0 1 1 0 8 0
amappl1 80 6814 0 6470 9 0 9 9 0 8 1
amappl 88 1207 0 1151 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 64 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 212 0 199 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 212 0 199 1 0 1 1 0 8 0
vmmpekpl 168 5644 0 5628 1 0 1 1 0 8 0
vmmpepl 168 20360 0 19603 39 1 38 38 0 357 1
vmsppl 272 211 0 199 2 0 2 2 0 8 0
rwobjpl 24 6326 0 5829 4 0 4 4 0 8 1
pdppl 4096 430 0 398 48 16 32 44 0 8 0
pvpl 32 100048 0 96307 34 0 34 34 0 265 1
pmappl 192 211 0 199 1 0 1 1 0 8 0
extentpl 40 58 0 40 1 0 1 1 0 8 0
phpool 112 255 0 20 7 0 7 7 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(ffffffff8247fb14) at panic+0x161 sys/kern/subr_prf.c:202
malloc(307061744,1d,1) at malloc+0xa34 sys/kern/kern_malloc.c:345
sys_shmat(ffff80002165ea90,ffff80002167d498,ffff80002167d4f0) at sys_shmat+0x7f sys/kern/sysv_shm.c:228
syscall(ffff80002167d560) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdc1a0, count: -6
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff8247fb14) at panic+0x161 sys/kern/subr_prf.c:202
malloc(307061744,1d,1) at malloc+0xa34 sys/kern/kern_malloc.c:345
sys_shmat(ffff80002165ea90,ffff80002167d498,ffff80002167d4f0) at sys_shmat+0x7f sys/kern/sysv_shm.c:228
syscall(ffff80002167d560) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdc1a0, count: -6
ddb>