panic: malloc: allocation too large, type = 31, size = 4294970988
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*177782 96975 0 0 0x4000000 1K syz-executor
505801 98077 0 0 0x4000000 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83371bf8) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(100000e6c,1f,1) at malloc+0xcf4 sys/kern/kern_malloc.c:334
sys_semop(ffff8000398c74a8,ffff80003a8d6c60,ffff80003a8d6bb0) at sys_semop+0x234 sys/kern/sysv_sem.c:564
syscall(ffff80003a8d6c60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a8d6c60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5051e733670, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: malloc: allocation too large, type = 31, size = 4294970988
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83371bf8) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(100000e6c,1f,1) at malloc+0xcf4 sys/kern/kern_malloc.c:334
sys_semop(ffff8000398c74a8,ffff80003a8d6c60,ffff80003a8d6bb0) at sys_semop+0x234 sys/kern/sysv_sem.c:564
syscall(ffff80003a8d6c60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a8d6c60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5051e733670, count: -6
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003a8d68d0
rbx 0xffff800029a9cdc7
rdx 0xffff800001444a80
rcx 0xffff8000398c74a8
rax 0xffff800029a9bff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xdc29ef0232db59ea
r11 0x2abe8bb64abae48
r12 0xffff800029a9cbc8
r13 0
r14 0
r15 0x1
rip 0xffffffff810240e5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003a8d68c0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=177782 pid=96975 tcnt=2 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=0xffff8000398c67d8,0xffff8000398c79d8
process=0xffff80003a8db2a8 user=0xffff80003a8d1000, vmspace=0xfffffd806bec91e0
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
33745 236018 23048 0 2 0 syz-executor
33745 379041 23048 0 3 0x4000080 fsleep syz-executor
96975 96403 45134 0 2 0 syz-executor
*96975 177782 45134 0 7 0x4000000 syz-executor
70475 99438 31540 0 3 0x80 nanoslp syz-executor
70475 513727 31540 0 3 0x4000080 fsleep syz-executor
98077 180789 45001 0 2 0 syz-executor
98077 505801 45001 0 7 0x4000000 syz-executor
78170 448663 1537 0 2 0x480 syz-executor
78170 238255 1537 0 3 0x4000080 msgwait syz-executor
78170 488121 1537 0 3 0x4000080 fsleep syz-executor
66571 502240 0 0 3 0x14200 bored sosplice
65127 491354 56625 0 3 0x100082 sbwait arp
56625 323168 91563 0 3 0x10008a sigsusp sh
31540 268838 34957 0 2 0x482 syz-executor
95500 498054 34957 0 2 0x482 syz-executor
45134 71959 34957 0 2 0x482 syz-executor
24737 403859 34957 0 2 0x482 syz-executor
91563 67961 34957 0 3 0x82 wait syz-executor
45001 306645 34957 0 2 0x482 syz-executor
1537 472579 34957 0 2 0x482 syz-executor
23048 345853 34957 0 2 0x482 syz-executor
34957 442873 92648 0 3 0x82 kqread syz-executor
92648 199381 5788 0 3 0x10008a sigsusp ksh
5788 389454 77814 0 3 0x98 kqread sshd-session
77814 362652 56067 0 3 0x92 kqread sshd-session
66490 36945 1 0 3 0x100083 ttyin getty
56067 367051 1 0 3 0x88 kqread sshd
78426 154821 74344 74 3 0x1100092 bpf pflogd
74344 470085 1 0 3 0x80 sbwait pflogd
11764 479527 44661 73 3 0x1100090 kqread syslogd
44661 420830 1 0 3 0x100082 sbwait syslogd
89151 462595 1 0 3 0x100080 kqread resolvd
71007 308780 7205 77 3 0x100092 kqread dhcpleased
43210 398477 7205 77 3 0x100092 kqread dhcpleased
7205 402214 1 0 3 0x80 kqread dhcpleased
79914 268416 0 0 2 0x40014200 smr
86256 117033 0 0 2 0x14200 zerothread
96233 70597 0 0 3 0x14200 aiodoned aiodoned
36929 271256 0 0 3 0x14200 syncer update
44573 103173 0 0 3 0x14200 cleaner cleaner
84879 257771 0 0 3 0x14200 reaper reaper
56159 55586 0 0 3 0x14200 pgdaemon pagedaemon
92105 204967 0 0 3 0x14200 bored viomb
51743 359869 0 0 3 0x40014200 acpi0 acpi0
90588 412804 0 0 3 0x40014200 idle1
6812 34151 0 0 3 0x14200 bored softnet3
24158 415897 0 0 3 0x14200 bored softnet2
8545 130000 0 0 3 0x14200 bored softnet1
50145 410815 0 0 3 0x14200 bored softnet0
80427 452150 0 0 3 0x14200 bored systqmp
80672 289618 0 0 3 0x14200 bored systq
64265 430464 0 0 3 0x14200 tmoslp softclockmp
19066 87739 0 0 2 0x40014200 softclock
35867 68470 0 0 3 0x40014200 idle0
1 281486 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 96975 (syz-executor) thread 0xffff8000398c74a8 (177782)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83906af8)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:577
#2 Xsyscall+0x128
Process 98077 (syz-executor) thread 0xffff8000ffff67d0 (505801)
shared rwlock vmmaplk r = 0 (0xfffffd806bec9118)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864
#3 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:668
#5 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279
#6 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332
#7 alltraps_kern_meltdown+0x7b
#8 copyout+0x57
#9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
#10 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10214 11282K 11282K 166960K 11679 0
pcb 18 12K 12K 166960K 59 0
rtable 212 6K 7K 166960K 368 0
pf 36 18K 21K 166960K 103 0
ifaddr 38 6K 7K 166960K 50 0
ifgroup 56 2K 2K 166960K 75 0
sysctl 3 1K 1K 166960K 3 0
counters 64 36K 36K 166960K 74 0
ioctlops 0 0K 4K 166960K 1559 0
iov 0 0K 16K 166960K 12 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1399 88K 88K 166960K 1572 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 47 0
dirhash 12 2K 2K 166960K 18 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 19 69K 93K 166960K 363 0
sigio 0 0K 0K 166960K 3 0
proc 72 91K 128K 166960K 555 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 40 0
in_multi 78 5K 6K 166960K 100 0
ether_multi 1 0K 0K 166960K 5 0
mrt 1 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 79 360K 360K 166960K 79 0
exec 0 0K 1K 166960K 406 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 242 73K 77K 166960K 4923 0
UVM aobj 6 4K 4K 166960K 6 0
pinsyscall 45 90K 105K 166960K 1437 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 14 0
NDP 12 0K 1K 166960K 31 0
temp 41 8635K 8762K 166960K 17869 0
kqueue 14 22K 28K 166960K 69 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 24 0 0 1 0 1 1 0 8 0
rtpcb 120 50 0 45 1 0 1 1 0 8 0
rtentry 112 110 0 13 4 0 4 4 0 8 0
unpcb 144 148 0 130 1 0 1 1 0 8 0
syncache 336 4 0 4 1 1 0 1 0 8 0
tcpcb 808 59 0 54 1 0 1 1 0 8 0
arp 120 18 0 2 1 0 1 1 0 8 0
inpcb 376 253 0 240 2 0 2 2 0 8 0
nd6 136 24 0 3 1 0 1 1 0 8 0
pkpcb 40 3 0 3 2 1 1 1 0 8 1
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1168 1 0 1 1 0 1 1 0 8 1
pfstscr 40 1 0 1 1 0 1 1 0 8 1
pffrag 232 2 0 1 1 0 1 1 0 482 0
pffrnode 88 2 0 1 1 0 1 1 0 8 0
pffrent 40 4 0 3 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 1 0 1 1 0 1 1 0 8 1
pftag 88 2 0 1 1 0 1 1 0 8 0
pfstitem 24 37 0 1 1 0 1 1 0 8 0
pfstkey 128 41 0 5 2 0 2 2 0 8 0
pfstate 376 38 0 3 4 0 4 4 0 8 0
pfrule 1344 27 0 22 2 1 1 2 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 450 0 44 26 0 26 26 0 8 0
art_table 32 452 0 44 4 0 4 4 0 8 0
art_node 16 108 0 19 1 0 1 1 0 8 0
sysvmsgpl 40 3 0 3 2 1 1 1 0 8 1
semapl 112 45 0 35 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 21 0 4 3 0 3 3 0 8 0
dino2pl 256 1983 0 475 95 0 95 95 0 8 0
ffsino 280 1983 0 475 109 0 109 109 0 8 0
nchpl 144 2517 0 830 63 0 63 63 0 8 0
uvmvnodes 80 2219 0 0 46 0 46 46 0 8 0
vnodes 216 2219 0 0 124 0 124 124 0 8 0
namei 1024 8524 0 8524 1 0 1 1 0 8 1
percpumem 16 51 0 5 1 0 1 1 0 8 0
kstatmem 264 34 0 10 2 0 2 2 0 8 0
scxspl 216 7740 0 7740 4 3 1 2 1 8 1
plimitpl 152 68 0 51 1 0 1 1 0 8 0
sigapl 424 663 0 611 7 0 7 7 0 8 0
futexpl 64 3834 0 3831 1 0 1 1 0 8 0
knotepl 120 312 0 0 10 0 10 10 0 8 0
kqueuepl 216 84 0 73 1 0 1 1 0 8 0
pipepl 328 122 0 95 3 0 3 3 0 8 0
fdescpl 504 644 0 611 5 0 5 5 0 8 0
filepl 152 3154 0 2921 15 2 13 14 0 8 3
lockfpl 104 76 0 73 1 0 1 1 0 8 0
lockfspl 48 37 0 34 1 0 1 1 0 8 0
sessionpl 144 23 0 14 1 0 1 1 0 8 0
pgrppl 48 31 0 14 1 0 1 1 0 8 0
ucredpl 104 391 0 377 1 0 1 1 0 8 0
zombiepl 144 613 0 611 1 0 1 1 0 8 0
processpl 1176 663 0 611 5 0 5 5 0 8 0
procpl 656 1056 0 998 6 0 6 6 0 8 0
srpgc 96 2 0 2 1 0 1 1 0 8 1
sosppl 168 2 0 0 1 0 1 1 0 8 0
sockpl 688 456 0 420 4 0 4 4 0 8 0
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 112 0 0 14 0 14 14 0 8 0
mcl2k 2048 31 0 0 4 0 4 4 0 8 0
mtagpl 96 48 0 0 2 0 2 2 0 8 0
mbufpl 256 209 0 0 13 0 13 13 0 8 0
bufpl 280 3763 0 131 260 0 260 260 0 8 0
anonpl 24 127149 0 120860 61 1 60 60 0 184 19
amapchunkpl 152 15541 0 14935 28 0 28 28 0 158 4
amappl16 200 2630 0 2521 18 3 15 17 0 8 8
amappl15 192 4 0 4 1 1 0 1 0 8 0
amappl14 184 119 0 106 1 0 1 1 0 8 0
amappl13 176 2 0 2 1 1 0 1 0 8 0
amappl12 168 1281 0 1247 3 1 2 2 0 8 0
amappl11 160 54 0 39 1 0 1 1 0 8 0
amappl10 152 33 0 33 1 1 0 1 0 8 0
amappl9 144 250 0 250 1 1 0 1 0 8 0
amappl8 136 28 0 25 1 0 1 1 0 8 0
amappl7 128 108 0 95 1 0 1 1 0 8 0
amappl6 120 174 0 169 1 0 1 1 0 8 0
amappl5 112 121 0 112 1 0 1 1 0 8 0
amappl4 104 308 0 287 1 0 1 1 0 8 0
amappl3 96 2780 0 2659 4 0 4 4 0 8 1
amappl2 88 640 0 574 2 0 2 2 0 8 0
amappl1 80 8606 0 8002 15 0 15 15 0 8 0
amappl 88 4547 0 4363 5 0 5 5 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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 644 0 611 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 644 0 611 1 0 1 1 0 8 0
vmmpekpl 168 6885 0 6846 3 0 3 3 0 8 0
vmmpepl 168 45588 0 43553 99 0 99 99 0 357 10
vmsppl 456 643 0 611 5 0 5 5 0 8 0
rwobjpl 64 17879 0 14582 55 0 55 55 0 8 1
pdppl 4096 1295 0 1222 97 24 73 85 0 8 0
pvpl 32 16966 0 0 137 0 137 137 0 265 0
pmappl 248 643 0 611 3 0 3 3 0 8 0
extentpl 40 55 0 38 1 0 1 1 0 8 0
phpool 112 268 0 27 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff8383aff0) 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
rw_assert_anylock(fffffd806bec9100) at rw_assert_anylock+0x25
uvm_map_lookup_entry(fffffd806bec9018,1db000,ffff8000310a5d20) at uvm_map_lookup_entry+0x79 vm_map_assert_anylock_ln sys/uvm/uvm_map.c:5344 [inline]
uvm_map_lookup_entry(fffffd806bec9018,1db000,ffff8000310a5d20) at uvm_map_lookup_entry+0x79 sys/uvm/uvm_map.c:1563
uvmfault_lookup(ffff8000310a5cf8,0) at uvmfault_lookup+0x133 sys/uvm/uvm_fault.c:1864
uvm_fault_check(ffff8000310a5cf8,ffff8000310a5d30,ffff8000310a5d60,0) at uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732
uvm_fault(fffffd806bec9018,1db000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:668
kpageflttrap(ffff8000310a5ea0,1db340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff8000310a5ea0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x57
syscall(ffff8000310a62f0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000310a62f0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77e15a51680, count: 1
ddb{0}> trace
x86_ipi_db(ffffffff8383aff0) 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
rw_assert_anylock(fffffd806bec9100) at rw_assert_anylock+0x25
uvm_map_lookup_entry(fffffd806bec9018,1db000,ffff8000310a5d20) at uvm_map_lookup_entry+0x79 vm_map_assert_anylock_ln sys/uvm/uvm_map.c:5344 [inline]
uvm_map_lookup_entry(fffffd806bec9018,1db000,ffff8000310a5d20) at uvm_map_lookup_entry+0x79 sys/uvm/uvm_map.c:1563
uvmfault_lookup(ffff8000310a5cf8,0) at uvmfault_lookup+0x133 sys/uvm/uvm_fault.c:1864
uvm_fault_check(ffff8000310a5cf8,ffff8000310a5d30,ffff8000310a5d60,0) at uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732
uvm_fault(fffffd806bec9018,1db000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:668
kpageflttrap(ffff8000310a5ea0,1db340) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff8000310a5ea0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x57
syscall(ffff8000310a62f0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000310a62f0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77e15a51680, count: -14
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83371bf8) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(100000e6c,1f,1) at malloc+0xcf4 sys/kern/kern_malloc.c:334
sys_semop(ffff8000398c74a8,ffff80003a8d6c60,ffff80003a8d6bb0) at sys_semop+0x234 sys/kern/sysv_sem.c:564
syscall(ffff80003a8d6c60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a8d6c60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5051e733670, count: 9
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83371bf8) at panic+0x1e5 sys/kern/subr_prf.c:198
malloc(100000e6c,1f,1) at malloc+0xcf4 sys/kern/kern_malloc.c:334
sys_semop(ffff8000398c74a8,ffff80003a8d6c60,ffff80003a8d6bb0) at sys_semop+0x234 sys/kern/sysv_sem.c:564
syscall(ffff80003a8d6c60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a8d6c60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5051e733670, count: -6