Warning: Permanently added '10.128.0.49' (ECDSA) to the list of known hosts.
2020/07/02 14:20:31 parsed 1 programs
2020/07/02 14:20:36 executed programs: 0
panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806d6d7700+16 0x0!=0x9adedf68c7e57354
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
31780 89336 0 0x2 0x4000480 1 syz-execprog
* 48118 15226 0 0x14000 0x40000200 0K softclock
db_enter() at db_enter+0x18
panic(ffffffff823ffeaf) at panic+0x15c
pool_cache_get(ffffffff8290d590) at pool_cache_get+0x323
pool_get(ffffffff8290d590,2) at pool_get+0x91
m_get(2,1) at m_get+0x4c
mld6_sendpkt(ffff800000676f80,83,0) at mld6_sendpkt+0xaf
mld6_fasttimeo() at mld6_fasttimeo+0x162
pffasttimo(ffffffff828ac170) at pffasttimo+0x85
timeout_run(ffffffff828ac170) at timeout_run+0xc4
softclock_thread(ffff800020d88ea0) at softclock_thread+0x16a
end trace frame: 0x0, count: 5
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806d6d7700+16 0x0!=0x9adedf68c7e57354
ddb{0}> trace
db_enter() at db_enter+0x18
panic(ffffffff823ffeaf) at panic+0x15c
pool_cache_get(ffffffff8290d590) at pool_cache_get+0x323
pool_get(ffffffff8290d590,2) at pool_get+0x91
m_get(2,1) at m_get+0x4c
mld6_sendpkt(ffff800000676f80,83,0) at mld6_sendpkt+0xaf
mld6_fasttimeo() at mld6_fasttimeo+0x162
pffasttimo(ffffffff828ac170) at pffasttimo+0x85
timeout_run(ffffffff828ac170) at timeout_run+0xc4
softclock_thread(ffff800020d88ea0) at softclock_thread+0x16a
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020d96e20
rbx 0xffff800020d96ed0
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81d7bbff kprintf+0x16f
r9 0x1
r10 0x2
r11 0x6ea67537befdcb0a
r12 0x3000000008
r13 0xffff800020d96e30
r14 0x100
r15 0x1
rip 0xffffffff81e2db58 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020d96e10
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (softclock) pid=48118 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=40000200<SYSTEM,CPUPEG>
pri=0, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020d89380,0xffff800020d884f0
process=0xffff800020d8b338 user=0xffff800020d92000, vmspace=0xffffffff82903bb0
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
89120 22101 89336 0 2 0x482 syz-executor.0
89336 136171 18711 0 3 0x82 kqread syz-execprog
89336 8447 18711 0 2 0x4000482 syz-execprog
89336 169370 18711 0 3 0x4000082 thrsleep syz-execprog
89336 200215 18711 0 3 0x4000082 thrsleep syz-execprog
89336 164638 18711 0 3 0x4000082 thrsleep syz-execprog
89336 424151 18711 0 3 0x4000082 thrsleep syz-execprog
89336 389015 18711 0 3 0x4000082 thrsleep syz-execprog
89336 31780 18711 0 7 0x4000482 syz-execprog
89336 486872 18711 0 3 0x4000082 thrsleep syz-execprog
18711 359185 45370 0 3 0x10008a pause ksh
45370 313792 51685 0 3 0x92 select sshd
34134 20085 1 0 3 0x100083 ttyin getty
51685 391370 1 0 3 0x80 select sshd
95682 512328 41802 74 3 0x100092 bpf pflogd
41802 348958 1 0 3 0x80 netio pflogd
79672 34788 56177 73 3 0x100090 kqread syslogd
56177 476598 1 0 3 0x100082 netio syslogd
56253 189821 1 77 3 0x100090 poll dhclient
72638 491326 1 0 3 0x80 poll dhclient
76655 28937 0 0 3 0x14200 bored smr
44653 318006 0 0 3 0x14200 pgzero zerothread
91467 429211 0 0 3 0x14200 aiodoned aiodoned
44638 91360 0 0 3 0x14200 syncer update
74522 68086 0 0 3 0x14200 cleaner cleaner
88740 69490 0 0 3 0x14200 reaper reaper
52545 446865 0 0 3 0x14200 pgdaemon pagedaemon
20372 301008 0 0 3 0x14200 bored crynlk
22109 310596 0 0 3 0x14200 bored crypto
70429 276917 0 0 3 0x40014200 acpi0 acpi0
14481 50555 0 0 3 0x40014200 idle1
17627 245706 0 0 3 0x14200 bored softnet
90044 228546 0 0 3 0x14200 bored systqmp
79303 296230 0 0 3 0x14200 bored systq
*15226 48118 0 0 7 0x40014200 softclock
21986 358208 0 0 3 0x40014200 idle0
1 174183 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 15226 (softclock) thread 0xffff800020d88ea0 (48118)
exclusive rwlock netlock r = 0 (0xffffffff82757548)
#0 witness_lock+0x4c7
#1 mld6_fasttimeo+0x1d
#2 pffasttimo+0x85
#3 timeout_run+0xc4
#4 softclock_thread+0x16a
#5 proc_trampoline+0x1c
shared rwlock timeout r = 0 (0xffffffff82778cc8)
#0 witness_lock+0x4c7
#1 timeout_run+0xb9
#2 softclock_thread+0x16a
#3 proc_trampoline+0x1c
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8292aa38)
#0 witness_lock+0x4c7
#1 __mp_acquire_count+0x51
#2 mi_switch+0x392
#3 sleep_finish+0x113
#4 softclock_thread+0x103
#5 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9467 6396K 6396K 78643K 10560 0
pcb 13 8K 8K 78643K 13 0
rtable 83 2K 2K 78643K 163 0
ifaddr 37 9K 9K 78643K 270 0
counters 41 33K 33K 78643K 41 0
ioctlops 0 0K 4K 78643K 1468 0
mount 1 1K 1K 78643K 1 0
vnodes 1183 74K 75K 78643K 1188 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 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 2 4K 12K 78643K 249 0
proc 59 63K 83K 78643K 398 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 22 1K 1K 78643K 22 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 1K 78643K 197 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 12K 12K 78643K 1175 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 5 0K 0K 78643K 7 0
temp 29 3853K 3917K 78643K 2330 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 4 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 17 0 15 1 0 1 1 0 8 0
rtentry 112 34 0 1 1 0 1 1 0 8 0
unpcb 120 29 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 296 265 0 259 1 0 1 1 0 8 0
nd6 48 3 0 0 1 0 1 1 0 8 0
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 11 0 7 1 0 1 1 0 8 0
pfstkey 112 11 0 7 1 0 1 1 0 8 0
pfstate 328 11 0 7 1 0 1 1 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 256 144 0 0 9 0 9 9 0 8 0
art_table 32 145 0 0 2 0 2 2 0 8 0
art_node 16 33 0 3 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1655 0 253 88 0 88 88 0 8 0
ffsino 272 1655 0 253 94 0 94 94 0 8 0
nchpl 144 2105 0 501 60 0 60 60 0 8 0
uvmvnodes 72 1665 0 0 31 0 31 31 0 8 0
vnodes 208 1665 0 0 88 0 88 88 0 8 0
namei 1024 5154 0 5154 2 1 1 1 0 8 1
percpumem 16 31 0 0 1 0 1 1 0 8 0
scxspl 192 6016 0 6016 11 10 1 7 0 8 1
plimitpl 152 15 0 8 1 0 1 1 0 8 0
sigapl 424 472 0 443 4 0 4 4 0 8 0
knotepl 112 47 0 36 1 0 1 1 0 8 0
kqueuepl 144 2 0 0 1 0 1 1 0 8 0
pipepl 304 77 0 70 2 1 1 1 0 8 0
fdescpl 496 457 0 443 3 0 3 3 0 8 0
filepl 152 1578 0 1520 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 19 0 9 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 62 0 53 1 0 1 1 0 8 0
zombiepl 144 443 0 442 2 1 1 1 0 8 0
processpl 984 472 0 442 5 0 5 5 0 8 1
procpl 624 480 0 442 4 0 4 4 0 8 1
sockpl 400 311 0 293 2 0 2 2 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 99 0 0 6 0 6 6 0 8 0
mbufpl: pool(0xffffffff8290d590:mbufpl): free list modified: page 0xfffffd8077699000; item ordinal 10; addr 0xfffffd8077699b00 (p 0xfffffd806e2ec000); offset 0x0=0x0
pool(mbufpl): free list modified: page 0xfffffd8077699000; item ordinal 10; addr 0xfffffd8077699b00 (p 0xfffffd806e2ec000); offset 0x0=0x0
mbufpl: pool(0xffffffff8290d590:mbufpl): page inconsistency: page 0xfffffd8077699000; item ordinal 11; addr 0xad1b3ce48f6aed31
bufpl 280 3280 0 132 225 0 225 225 0 8 0
anonpl 16 28148 0 26330 13 1 12 12 0 124 3
amapchunkpl 152 1044 0 978 4 0 4 4 0 158 1
amappl16 192 855 0 810 3 0 3 3 0 8 0
amappl15 184 2 0 2 2 1 1 1 0 8 1
amappl14 176 267 0 261 1 0 1 1 0 8 0
amappl13 168 23 0 21 2 1 1 1 0 8 0
amappl11 152 284 0 268 1 0 1 1 0 8 0
amappl10 144 18 0 13 1 0 1 1 0 8 0
amappl9 136 235 0 234 1 0 1 1 0 8 0
amappl8 128 269 0 261 1 0 1 1 0 8 0
amappl7 120 115 0 102 1 0 1 1 0 8 0
amappl6 112 253 0 250 2 1 1 1 0 8 0
amappl5 104 121 0 107 1 0 1 1 0 8 0
amappl4 96 728 0 702 1 0 1 1 0 8 0
amappl3 88 105 0 99 1 0 1 1 0 8 0
amappl2 80 1374 0 1315 2 0 2 2 0 8 0
amappl1 72 17378 0 16954 23 5 18 18 0 8 8
amappl 80 704 0 676 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
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 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 457 0 443 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 457 0 443 1 0 1 1 0 8 0
vmmpekpl 168 6593 0 6568 2 0 2 2 0 8 0
vmmpepl 168 42582 0 41642 81 9 72 72 0 357 29
vmsppl 368 456 0 443 2 0 2 2 0 8 0
pdppl 4096 921 0 886 6 0 6 6 0 8 1
pvpl 32 138919 0 134719 108 4 104 104 0 265 69
pmappl 232 456 0 443 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 230 0 4 7 0 7 7 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18
panic(ffffffff823ffeaf) at panic+0x15c
pool_cache_get(ffffffff8290d590) at pool_cache_get+0x323
pool_get(ffffffff8290d590,2) at pool_get+0x91
m_get(2,1) at m_get+0x4c
mld6_sendpkt(ffff800000676f80,83,0) at mld6_sendpkt+0xaf
mld6_fasttimeo() at mld6_fasttimeo+0x162
pffasttimo(ffffffff828ac170) at pffasttimo+0x85
timeout_run(ffffffff828ac170) at timeout_run+0xc4
softclock_thread(ffff800020d88ea0) at softclock_thread+0x16a
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a
x86_ipi_handler() at x86_ipi_handler+0xc6
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff8292a830) at __mp_lock+0x127
__mp_acquire_count(ffffffff8292a830,1) at __mp_acquire_count+0x51
mi_switch() at mi_switch+0x392
sleep_finish(ffff800020e9b1d0,1) at sleep_finish+0x113
sleep_finish_all(ffff800020e9b1d0,1) at sleep_finish_all+0x32
tsleep(ffffffff827b12a0,120,ffffffff823ef60b,2) at tsleep+0x1cc
sys_nanosleep(ffff800020ddc758,ffff800020e9b300,ffff800020e9b350) at sys_nanosleep+0x205
syscall(ffff800020e9b3d0) at syscall+0x4a4
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc000151e40, count: 3
ddb{1}> trace
x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a
x86_ipi_handler() at x86_ipi_handler+0xc6
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff8292a830) at __mp_lock+0x127
__mp_acquire_count(ffffffff8292a830,1) at __mp_acquire_count+0x51
mi_switch() at mi_switch+0x392
sleep_finish(ffff800020e9b1d0,1) at sleep_finish+0x113
sleep_finish_all(ffff800020e9b1d0,1) at sleep_finish_all+0x32
tsleep(ffffffff827b12a0,120,ffffffff823ef60b,2) at tsleep+0x1cc
sys_nanosleep(ffff800020ddc758,ffff800020e9b300,ffff800020e9b350) at sys_nanosleep+0x205
syscall(ffff800020e9b3d0) at syscall+0x4a4
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc000151e40, count: -12