panic: malloc: alWlARoNcIaNtG:i onSP Lt oNoO Tl aLrOWgEeRE,D tOypN eS =YS C2,A LsL i3 z4e E=X IT1 8404 6974
40Stopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
446815 91322 0 0 0x4000000 0 syz-executor.1
*449674 26467 74 0x100012 0 1 pflogd
savectx(6,0,13ae2bf814b0,3,13ac14603b16,13aefceca000) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffcee70, count: 14
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 = 18446744073709550976
ddb{1}> trace
savectx(6,0,13ae2bf814b0,3,13ac14603b16,13aefceca000) at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffcee70, count: -1
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff800020aab8f0
rbx 0
rdx 0xffff800020ac0778
rcx 0
rax 0x31
r8 0xffffffff81a5e3cf kprintf+0x16f
r9 0x1
r10 0x25
r11 0xafc69d04a4ba0ba
r12 0
r13 0
r14 0xffff800020ac0778
r15 0
rip 0xffffffff820dd3f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff800020aab870
ss 0x10
savectx+0xb1: movl $0,%gs:0x530
ddb{1}> show proc
PROC (pflogd) pid=449674 stat=onproc
flags process=100012<EXEC,SUGID,PLEDGE> proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac1158,0xffff800020ac1658
process=0xffff800020adce00 user=0xffff800020aa6000, vmspace=0xfffffd806e7d62e8
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
91322 449169 4827 0 2 0 syz-executor.1
91322 369513 4827 0 3 0x4000080 fsleep syz-executor.1
91322 446815 4827 0 7 0x4000000 syz-executor.1
21327 20895 72695 0 2 0x482 syz-executor.0
4827 339428 72695 0 3 0x82 nanosleep syz-executor.1
63238 501219 0 0 3 0x14200 bored sosplice
57744 154113 0 0 3 0x14200 acct acct
72695 336037 78505 0 3 0x82 thrsleep syz-fuzzer
72695 260971 78505 0 3 0x4000082 nanosleep syz-fuzzer
72695 473021 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 176127 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 482011 78505 0 3 0x4000082 kqread syz-fuzzer
72695 38522 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 418301 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 45347 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 464743 78505 0 3 0x4000082 thrsleep syz-fuzzer
72695 322916 78505 0 2 0x4000482 syz-fuzzer
78505 240177 76304 0 3 0x10008a pause ksh
76304 400495 35648 0 3 0x92 select sshd
50621 111159 1 0 3 0x100083 ttyin getty
35648 359210 1 0 3 0x80 select sshd
*26467 449674 97097 74 7 0x100012 pflogd
97097 114473 1 0 3 0x80 netio pflogd
2977 233061 7211 73 3 0x100090 kqread syslogd
7211 279440 1 0 3 0x100082 netio syslogd
70502 15116 1 77 3 0x100090 poll dhclient
47710 14755 1 0 3 0x80 poll dhclient
92385 392940 0 0 3 0x14200 pgzero zerothread
7729 369512 0 0 3 0x14200 aiodoned aiodoned
82124 107073 0 0 3 0x14200 syncer update
75185 99216 0 0 3 0x14200 cleaner cleaner
4941 477410 0 0 3 0x14200 reaper reaper
81765 272684 0 0 3 0x14200 pgdaemon pagedaemon
94157 7570 0 0 3 0x14200 bored crynlk
4182 80325 0 0 3 0x14200 bored crypto
11145 389387 0 0 3 0x40014200 acpi0 acpi0
45850 280884 0 0 3 0x40014200 idle1
75682 295208 0 0 3 0x14200 bored softnet
42213 216520 0 0 3 0x14200 bored systqmp
5854 487985 0 0 3 0x14200 bored systq
13222 334135 0 0 2 0x40014200 softclock
36528 232162 0 0 3 0x40014200 idle0
5793 352171 0 0 3 0x14200 bored smr
1 193617 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 91322 (syz-executor.1) thread 0xffff800020abf8c8 (446815)
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 (0xffffffff8264cd40)
#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 9542 6436K 7074K 78643K 14096 0 0
pcb 13 8K 8K 78643K 211 0 0
rtable 113 4K 5K 78643K 601 0 0
ifaddr 65 14K 15K 78643K 204 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1542 0 0
iov 0 0K 16K 78643K 121 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1211 76K 77K 78643K 2495 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 14 0 0
VM map 2 1K 1K 78643K 6 0 0
sem 12 0K 0K 78643K 162 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1809 196K 290K 78643K 12843 0 0
file desc 5 13K 25K 78643K 1462 0 0
sigio 0 0K 0K 78643K 17 0 0
proc 61 63K 83K 78643K 722 0 0
subproc 32 2K 2K 78643K 102 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 126 0 0
in_multi 33 2K 2K 78643K 129 0 0
ether_multi 1 0K 0K 78643K 8 0 0
mrt 0 0K 0K 78643K 3 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 84 371K 371K 78643K 84 0 0
exec 0 0K 1K 78643K 350 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 100 21K 30K 78643K 5631 0 0
UVM aobj 53 3K 3K 78643K 53 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 220 0 0
NDP 14 0K 0K 78643K 60 0 0
temp 186 3560K 3628K 78643K 28679 0 0
kqueue 0 0K 0K 78643K 11 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 17 0 10 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 87 0 85 1 0 1 1 0 8 0
rtentry 112 88 0 43 2 0 2 2 0 8 0
unpcb 120 453 0 443 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 6261 0 6261 3 3 0 2 0 8 0
tcpcb 544 315 0 308 1 0 1 1 0 8 0
inpcb 280 957 0 948 3 2 1 2 0 8 0
nd6 48 12 0 8 1 0 1 1 0 8 0
pkpcb 40 10 0 10 3 3 0 1 0 8 0
ppxss 1128 26 0 26 5 4 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 56 0 40 1 0 1 1 0 8 0
pfstkey 112 56 0 40 1 0 1 1 0 8 0
pfstate 328 56 0 40 3 0 3 3 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 256 393 0 177 14 0 14 14 0 8 0
art_table 32 394 0 177 2 0 2 2 0 8 0
art_node 16 87 0 46 1 0 1 1 0 8 0
sysvmsgpl 40 17 0 12 1 0 1 1 0 8 0
semapl 112 160 0 150 1 0 1 1 0 8 0
shmpl 112 51 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 3566 0 2165 46 0 46 46 0 8 0
ffsino 272 3566 0 2165 94 0 94 94 0 8 0
nchpl 144 5744 0 4137 61 0 61 61 0 8 0
uvmvnodes 72 4509 0 0 82 0 82 82 0 8 0
vnodes 208 4509 0 0 238 0 238 238 0 8 0
namei 1024 17868 0 17868 3 2 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
vmpool 552 4 0 4 2 2 0 1 0 8 0
scsiplug 64 1 0 1 1 1 0 1 0 8 0
scxspl 192 15777 0 15777 13 10 3 7 0 8 3
plimitpl 152 133 0 125 1 0 1 1 0 8 0
sigapl 432 1650 0 1635 3 1 2 3 0 8 0
futexpl 56 19198 0 19197 2 1 1 1 0 8 0
knotepl 112 408 0 389 1 0 1 1 0 8 0
kqueuepl 104 334 0 332 1 0 1 1 0 8 0
pipepl 112 930 0 911 3 2 1 2 0 8 0
fdescpl 488 1651 0 1635 3 0 3 3 0 8 0
filepl 152 9775 0 9670 7 2 5 6 0 8 0
lockfpl 104 449 0 448 1 0 1 1 0 8 0
lockfspl 48 144 0 143 1 0 1 1 0 8 0
sessionpl 112 22 0 11 1 0 1 1 0 8 0
pgrppl 48 38 0 27 1 0 1 1 0 8 0
ucredpl 96 1803 0 1794 1 0 1 1 0 8 0
zombiepl 144 1635 0 1634 2 1 1 1 0 8 0
processpl 896 1668 0 1634 4 0 4 4 0 8 0
procpl 632 4666 0 4621 6 1 5 5 0 8 1
srpgc 64 8 0 8 4 4 0 1 0 8 0
sosppl 128 15 0 15 4 4 0 1 0 8 0
sockpl 384 1517 0 1496 6 3 3 4 0 8 0
mcl64k 65536 7 0 0 1 0 1 1 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl12k 12288 13 0 0 2 0 2 2 0 8 0
mcl9k 9216 11 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 11 0 0 2 0 2 2 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 239 0 0 27 0 27 27 0 8 0
mtagpl 80 27 0 0 1 0 1 1 0 8 0
mbufpl 256 270 0 0 15 0 15 15 0 8 0
bufpl 256 10715 0 3667 441 0 441 441 0 8 0
anonpl 16 164867 0 152223 106 38 68 68 0 124 14
amapchunkpl 152 9794 0 9686 23 18 5 12 0 158 0
amappl16 192 7852 0 7148 84 40 44 48 0 8 8
amappl15 184 729 0 729 1 1 0 1 0 8 0
amappl14 176 52 0 50 1 0 1 1 0 8 0
amappl12 160 472 0 471 3 2 1 1 0 8 0
amappl11 152 351 0 333 1 0 1 1 0 8 0
amappl10 144 17 0 11 1 0 1 1 0 8 0
amappl9 136 672 0 666 1 0 1 1 0 8 0
amappl8 128 210 0 185 1 0 1 1 0 8 0
amappl7 120 66 0 59 1 0 1 1 0 8 0
amappl6 112 366 0 355 1 0 1 1 0 8 0
amappl5 104 638 0 623 1 0 1 1 0 8 0
amappl4 96 1444 0 1414 1 0 1 1 0 8 0
amappl3 88 619 0 614 1 0 1 1 0 8 0
amappl2 80 12516 0 12445 3 1 2 3 0 8 0
amappl1 72 45982 0 45525 26 16 10 20 0 8 0
amappl 80 4988 0 4951 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 52 0 0 1 0 1 1 0 8 0
uaddrrnd 24 1655 0 1635 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1655 0 1635 1 0 1 1 0 8 0
vmmpekpl 168 15170 0 15136 2 0 2 2 0 8 0
vmmpepl 168 206659 0 204811 173 77 96 105 0 357 12
vmsppl 368 1650 0 1635 2 0 2 2 0 8 0
pdppl 4096 3317 0 3278 7 1 6 6 0 8 0
pvpl 32 462311 0 446507 246 81 165 166 0 265 35
pmappl 232 1654 0 1639 4 3 1 2 0 8 0
extentpl 40 38 0 22 1 0 1 1 0 8 0
phpool 112 617 0 6 18 0 18 18 0 8 0