kern.securelevel: 0 -> 1
creating runtime link editor directory cache.
preserving editor files.
starting network daemons: sshd.
starting local daemons:.
Thu Feb 4 05:17:31 PST 2021
OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00)
Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts.
2021/02/04 05:17:41 fuzzer started
2021/02/04 05:17:45 dialing manager at 10.128.15.235:2224
2021/02/04 05:17:45 syscalls: 383
2021/02/04 05:17:45 code coverage: enabled
2021/02/04 05:17:45 comparison tracing: enabled
2021/02/04 05:17:45 extra coverage: enabled
2021/02/04 05:17:45 setuid sandbox: enabled
2021/02/04 05:17:45 namespace sandbox: support is not implemented in syzkaller
2021/02/04 05:17:45 Android sandbox: support is not implemented in syzkaller
2021/02/04 05:17:45 fault injection: support is not implemented in syzkaller
2021/02/04 05:17:45 leak checking: support is not implemented in syzkaller
2021/02/04 05:17:45 net packet injection: enabled
2021/02/04 05:17:45 net device setup: support is not implemented in syzkaller
2021/02/04 05:17:45 concurrency sanitizer: support is not implemented in syzkaller
2021/02/04 05:17:45 devlink PCI setup: support is not implemented in syzkaller
2021/02/04 05:17:45 USB emulation: support is not implemented in syzkaller
2021/02/04 05:17:45 hci packet injection: support is not implemented in syzkaller
2021/02/04 05:17:45 wifi device emulation: support is not implemented in syzkaller
2021/02/04 05:17:45 fetching corpus: 0, signal 0/2000 (executing program)
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2021/02/04 05:18:04 starting 2 fuzzer processes
05:18:04 executing program 0:
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x200, 0x0)
r0 = getpid()
ktrace(&(0x7f0000000000)='./file0\x00', 0x0, 0x1b10, r0)
lstat(&(0x7f0000000240)='./file0\x00', &(0x7f0000000280))
05:18:04 executing program 1:
mknod(&(0x7f0000000080)='./bus\x00', 0x2000, 0x86139)
kevent(0xffffffffffffffff, &(0x7f0000000180)=[{{}, 0x0, 0x0, 0x40, 0x0, 0x8100000000000000}], 0x0, 0x0, 0x0, 0x0)
r0 = open(&(0x7f0000000000)='./bus\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)="510fc3a0", 0x4)
pwritev(r0, &(0x7f00000002c0)=[{&(0x7f0000000180), 0xff20}], 0x100000000000005e, 0x0, 0x0)
05:18:04 executing program 1:
r0 = kqueue()
fcntl$dupfd(r0, 0x2, 0xffffffffffffffff)
r1 = fcntl$dupfd(0xffffffffffffffff, 0x2, 0xffffffffffffffff)
r2 = kqueue()
r3 = fcntl$dupfd(r2, 0x2, 0xffffffffffffffff)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x3, 0x10, r3, 0x0, 0x0)
ioctl$BIOCSHDRCMPLT(r1, 0x80044275, &(0x7f0000000240)=0x4631)
ioctl$VMM_IOC_RESETCPU(0xffffffffffffffff, 0x82405605, &(0x7f0000000000)={0x10001, 0x0, {[0x1, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3fffffe], [0x0, 0x2000000000, 0x0, 0x7fd, 0x0, 0x0, 0x0, 0x0, 0x4], [], [], [{0x0, 0x0, 0x400000}, {}, {0x0, 0x0, 0xfffffffd}, {0x0, 0x0, 0x5}, {}, {}, {}, {0xfffe}], {0x0, 0xfffffffd, 0x200000}}})
05:18:04 executing program 0:
setrlimit(0x8, &(0x7f0000000040)={0x7, 0x95})
r0 = syz_open_pts()
close(r0)
r1 = syz_open_pts()
ioctl$TIOCSETA(r1, 0x802c7414, &(0x7f0000000080)={0xfffffffffffffffd, 0x0, 0x5, 0xfffffffa, "73f300070060c3dce5081a6f6000"})
writev(r0, &(0x7f0000000340)=[{&(0x7f00000007c0)="1a2eeea85f965e1c7cf20e2da943349f13b97f9c2c18705ca7", 0x19}], 0x1)
login: vrele: bad writecount: 0xfffffd807da38088, type VCHR, use 0, write 1, hold 0,
tag VT_UFS, ino 2678, on dev 4, 0 flags 0x180, effnlink 1, nlink 1
mode 020620, owner 0, group 4, size 0
panic: vrele: v_writecount != 0
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 11981 6899 0 0 0x4000000 0 syz-executor.0
db_enter() at db_enter+0x18
panic(ffffffff8243627a) at panic+0x15e
vrele(fffffd807da38088) at vrele+0x187
ptmioctl(5100,40287401,ffff800022746e70,3,ffff800021670d20) at ptmioctl+0x5b9
VOP_IOCTL(fffffd806eaf12f0,40287401,ffff800022746e70,3,fffffd807f7b7a80,ffff800021670d20) at VOP_IOCTL+0x91
vn_ioctl(fffffd80678b4bd0,40287401,ffff800022746e70,ffff800021670d20) at vn_ioctl+0xb5
sys_ioctl(ffff800021670d20,ffff800022746f80,ffff800022746fd0) at sys_ioctl+0x4ac
syscall(ffff800022747050) at syscall+0x507
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x717a5794e30, count: 6
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
vrele: v_writecount != 0
ddb> trace
db_enter() at db_enter+0x18
panic(ffffffff8243627a) at panic+0x15e
vrele(fffffd807da38088) at vrele+0x187
ptmioctl(5100,40287401,ffff800022746e70,3,ffff800021670d20) at ptmioctl+0x5b9
VOP_IOCTL(fffffd806eaf12f0,40287401,ffff800022746e70,3,fffffd807f7b7a80,ffff800021670d20) at VOP_IOCTL+0x91
vn_ioctl(fffffd80678b4bd0,40287401,ffff800022746e70,ffff800021670d20) at vn_ioctl+0xb5
sys_ioctl(ffff800021670d20,ffff800022746f80,ffff800022746fd0) at sys_ioctl+0x4ac
syscall(ffff800022747050) at syscall+0x507
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x717a5794e30, count: -9
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff8000227468b0
rbx 0xffff8000227468c0
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff820e50f5 kprintf+0x155
r9 0x1
r10 0x2d3bb43063d4dcda
r11 0x4e799a9c32e1c0aa
r12 0x3000000008
r13 0xffff800022746960
r14 0x100
r15 0x1
rip 0xffffffff81ab85c8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000227468a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.0) pid=11981 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800021671500,0xffffffff827ebf10
process=0xffff80002165d010 user=0xffff800022742000, vmspace=0xfffffd807effc550
estcpu=36, cpticks=2, pctcpu=0.0
user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
6899 385202 34919 0 2 0 syz-executor.0
* 6899 11981 34919 0 7 0x4000000 syz-executor.0
98488 127529 88088 0 2 0x482 syz-executor.1
34919 28951 88088 0 2 0x482 syz-executor.0
88088 275046 14858 0 3 0x82 thrsleep syz-fuzzer
88088 454719 14858 0 3 0x4000082 thrsleep syz-fuzzer
88088 306927 14858 0 3 0x4000082 kqread syz-fuzzer
88088 335796 14858 0 3 0x4000082 thrsleep syz-fuzzer
88088 225824 14858 0 3 0x4000082 thrsleep syz-fuzzer
88088 249730 14858 0 3 0x4000082 thrsleep syz-fuzzer
88088 507491 14858 0 3 0x4000082 thrsleep syz-fuzzer
14858 151193 72319 0 3 0x10008a sigsusp ksh
72319 16643 64010 0 3 0x92 select sshd
93510 129312 1 0 3 0x100083 ttyin getty
64010 325122 1 0 3 0x80 select sshd
65320 485362 42699 73 2 0x100090 syslogd
42699 477323 1 0 3 0x100082 netio syslogd
40247 295856 1 77 3 0x100090 poll dhclient
67598 387008 1 0 3 0x80 poll dhclient
9785 359373 0 0 3 0x14200 bored smr
39779 305097 0 0 2 0x14200 zerothread
71705 300810 0 0 3 0x14200 aiodoned aiodoned
95676 260027 0 0 3 0x14200 syncer update
18899 115421 0 0 3 0x14200 cleaner cleaner
62394 102482 0 0 3 0x14200 reaper reaper
49144 44908 0 0 3 0x14200 pgdaemon pagedaemon
42776 252285 0 0 3 0x14200 bored crynlk
22223 185925 0 0 3 0x14200 bored crypto
12627 467445 0 0 3 0x14200 bored viomb
2066 226113 0 0 3 0x40014200 acpi0 acpi0
22689 160073 0 0 3 0x14200 bored softnet
12395 496374 0 0 3 0x14200 bored systqmp
48040 249679 0 0 3 0x14200 bored systq
50579 50181 0 0 3 0x40014200 bored softclock
14465 394078 0 0 3 0x40014200 idle0
1 105893 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 9473 6345K 6345K 78643K 10564 0
pcb 13 8K 8K 78643K 13 0
rtable 105 3K 3K 78643K 191 0
ifaddr 44 10K 10K 78643K 44 0
counters 21 16K 16K 78643K 21 0
ioctlops 0 0K 2K 78643K 15 0
iov 0 0K 2K 78643K 2 0
mount 1 1K 1K 78643K 1 0
vnodes 1215 76K 76K 78643K 1222 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 5 13K 25K 78643K 38 0
proc 47 38K 54K 78643K 364 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 33 2K 2K 78643K 33 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 37 175K 175K 78643K 37 0
exec 0 0K 2K 78643K 317 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 112 22K 23K 78643K 703 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 10 0K 0K 78643K 10 0
temp 65 3963K 4027K 78643K 1803 0
kqueue 3 4K 4K 78643K 3 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
arp 64 6 0 0 1 0 1 1 0 8 0
rtpcb 120 19 0 17 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 23 0 15 1 0 1 1 0 8 0
syncache 296 4 0 4 1 1 0 1 0 8 0
tcpqe 32 1207 0 1207 2 1 1 2 0 8 1
tcpcb 736 10 0 6 1 0 1 1 0 8 0
inpcb 304 32 0 25 1 0 1 1 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
kcovpl 48 2 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 188 0 0 12 0 12 12 0 8 0
art_table 32 189 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1422 0 26 88 0 88 88 0 8 0
ffsino 240 1422 0 26 83 0 83 83 0 8 0
nchpl 144 1644 0 46 60 0 60 60 0 8 0
uvmvnodes 72 1465 0 0 27 0 27 27 0 8 0
vnodes 224 1465 0 0 87 0 87 87 0 8 0
namei 1024 4004 0 4004 2 1 1 1 0 8 1
scxspl 216 4709 0 4709 9 1 8 8 0 8 8
plimitpl 152 16 0 8 1 0 1 1 0 8 0
sigapl 424 225 0 196 4 0 4 4 0 8 0
futexpl 56 45 0 45 1 0 1 1 0 8 1
knotepl 112 62 0 42 1 0 1 1 0 8 0
kqueuepl 168 6 0 4 1 0 1 1 0 8 0
pipepl 304 69 0 58 1 0 1 1 0 8 0
fdescpl 432 210 0 196 2 0 2 2 0 8 0
filepl 120 978 0 877 4 0 4 4 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 144 17 0 7 1 0 1 1 0 8 0
pgrppl 48 17 0 7 1 0 1 1 0 8 0
ucredpl 96 57 0 50 1 0 1 1 0 8 0
zombiepl 144 196 0 195 2 1 1 1 0 8 0
processpl 1016 225 0 195 5 0 5 5 0 8 1
procpl 672 235 0 198 4 0 4 4 0 8 0
sockpl 432 74 0 57 4 1 3 3 0 8 1
mcl64k 65536 3 0 3 1 0 1 1 0 8 1
mcl4k 4096 8 0 8 1 1 0 1 0 8 0
mcl2k 2048 164850 0 164772 70 52 18 35 0 8 7
mtagpl 96 2 0 2 1 1 0 1 0 8 0
mbufpl 256 179394 0 179293 26 12 14 19 0 8 5
bufpl 280 3248 0 169 220 0 220 220 0 8 0
anonpl 24 38647 0 20411 113 2 111 111 0 188 0
amapchunkpl 152 1189 0 797 19 1 18 18 0 158 2
amappl16 200 870 0 105 41 0 41 41 0 8 0
amappl15 192 3 0 2 1 0 1 1 0 8 0
amappl14 184 22 0 18 1 0 1 1 0 8 0
amappl13 176 26 0 23 1 0 1 1 0 8 0
amappl12 168 21 0 17 1 0 1 1 0 8 0
amappl11 160 53 0 41 1 0 1 1 0 8 0
amappl10 152 4 0 1 1 0 1 1 0 8 0
amappl9 144 273 0 273 1 1 0 1 0 8 0
amappl8 136 115 0 88 2 0 2 2 0 8 0
amappl7 128 215 0 209 1 0 1 1 0 8 0
amappl6 120 59 0 52 1 0 1 1 0 8 0
amappl5 112 360 0 346 1 0 1 1 0 8 0
amappl4 104 239 0 215 1 0 1 1 0 8 0
amappl3 96 108 0 101 1 0 1 1 0 8 0
amappl2 88 914 0 845 3 1 2 3 0 8 0
amappl1 80 13982 0 13544 27 15 12 20 0 8 1
amappl 88 485 0 411 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 24 210 0 196 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 210 0 196 1 0 1 1 0 8 0
vmmpekpl 168 5800 0 5780 1 0 1 1 0 8 0
vmmpepl 168 33757 0 31876 121 11 110 110 0 357 23
vmsppl 272 209 0 196 2 0 2 2 0 8 1
rwobjpl 24 9322 0 7913 14 4 10 10 0 8 1
pdppl 4096 426 0 392 58 18 40 40 0 8 6
pvpl 32 128986 0 107874 179 3 176 176 0 265 2
pmappl 200 209 0 196 1 0 1 1 0 8 0
extentpl 40 58 0 40 1 0 1 1 0 8 0
phpool 112 356 0 86 8 0 8 8 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18
panic(ffffffff8243627a) at panic+0x15e
vrele(fffffd807da38088) at vrele+0x187
ptmioctl(5100,40287401,ffff800022746e70,3,ffff800021670d20) at ptmioctl+0x5b9
VOP_IOCTL(fffffd806eaf12f0,40287401,ffff800022746e70,3,fffffd807f7b7a80,ffff800021670d20) at VOP_IOCTL+0x91
vn_ioctl(fffffd80678b4bd0,40287401,ffff800022746e70,ffff800021670d20) at vn_ioctl+0xb5
sys_ioctl(ffff800021670d20,ffff800022746f80,ffff800022746fd0) at sys_ioctl+0x4ac
syscall(ffff800022747050) at syscall+0x507
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x717a5794e30, count: -9
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18
panic(ffffffff8243627a) at panic+0x15e
vrele(fffffd807da38088) at vrele+0x187
ptmioctl(5100,40287401,ffff800022746e70,3,ffff800021670d20) at ptmioctl+0x5b9
VOP_IOCTL(fffffd806eaf12f0,40287401,ffff800022746e70,3,fffffd807f7b7a80,ffff800021670d20) at VOP_IOCTL+0x91
vn_ioctl(fffffd80678b4bd0,40287401,ffff800022746e70,ffff800021670d20) at vn_ioctl+0xb5
sys_ioctl(ffff800021670d20,ffff800022746f80,ffff800022746fd0) at sys_ioctl+0x4ac
syscall(ffff800022747050) at syscall+0x507
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x717a5794e30, count: -9