witness: userret: ioctl (3)
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syzbot
Dec 22, 2021, 4:55:20 PM12/22/21
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 5845290fe6de Replace deprecated IO::Socket::INET6 with IO:..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=107ec17eb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=6dde3fda33074a256318
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6dde3f...@syzkaller.appspotmail.com
b � + &~� b � + &~� b � + &~� b � + &~� b � + &~�witness: userret: returning with the following locks held:
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
panic: witness_warn
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
28444 34193 0 0 0 1 syz-executor.0
*103873 73387 0 0x1000 0x4080000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: witness_warn
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, count: -6
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800022127c90
rbx 0xffffffff82814bff cpu_info_full_primary+0x2bff
rdx 0
rcx 0
rax 0xffff800021266d30
r8 0x101010101010101
r9 0x8080808080808080
r10 0xcf0e64f164302543
r11 0x7f6f92aa9eca080a
r12 0xffffffff82814a00 cpu_info_full_primary+0x2a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81a3ecd8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800022127c80
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=103873 stat=onproc
flags process=1000<SINGLEEXIT> proc=4080000<SUSPSINGLE,THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000212677b0,0xffff800021266020
process=0xffff800021ecc868 user=0xffff800022122000, vmspace=0xfffffd8062027468
estcpu=36, cpticks=3, pctcpu=0.0
user=0, sys=3, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
34193 28444 72778 0 7 0 syz-executor.0
34193 375813 72778 0 2 0x4000000 syz-executor.0
34193 20622 72778 0 2 0x4000000 syz-executor.0
*73387 103873 23547 0 7 0x4081000 syz-executor.1
73387 104527 23547 0 3 0x4003000 suspend syz-executor.1
23547 145322 78752 0 3 0x82 nanoslp syz-executor.1
72778 51870 78752 0 3 0x82 nanoslp syz-executor.0
11425 367343 0 0 3 0x14200 acct acct
67442 382473 0 0 3 0x14280 nfsidl nfsio
42404 491660 0 0 3 0x14280 nfsidl nfsio
82390 468300 0 0 3 0x14280 nfsidl nfsio
74694 197226 0 0 3 0x14280 nfsidl nfsio
64636 360929 0 0 3 0x14280 nfsidl nfsio
93550 322378 0 0 3 0x14280 nfsidl nfsio
39745 11823 0 0 3 0x14280 nfsidl nfsio
37324 474900 0 0 3 0x14280 nfsidl nfsio
65330 411287 0 0 3 0x14280 nfsidl nfsio
96951 170303 0 0 3 0x14280 nfsidl nfsio
89503 346386 0 0 3 0x14280 nfsidl nfsio
98351 404375 0 0 3 0x14280 nfsidl nfsio
14029 22386 0 0 3 0x14280 nfsidl nfsio
23084 244645 0 0 3 0x14280 nfsidl nfsio
14090 394062 0 0 3 0x14280 nfsidl nfsio
99567 45098 0 0 3 0x14280 nfsidl nfsio
98200 506610 0 0 3 0x14280 nfsidl nfsio
20002 507854 0 0 3 0x14280 nfsidl nfsio
85204 238327 0 0 3 0x14280 nfsidl nfsio
26081 445920 0 0 3 0x14280 nfsidl nfsio
28828 330245 0 0 3 0x14200 bored sosplice
78752 506592 53074 0 3 0x82 thrsleep syz-fuzzer
78752 356446 53074 0 3 0x4000082 nanoslp syz-fuzzer
78752 333552 53074 0 3 0x4000082 kqread syz-fuzzer
78752 339037 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 293450 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 518364 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 225217 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 269818 53074 0 3 0x4000082 thrsleep syz-fuzzer
53074 91720 22059 0 3 0x10008a sigsusp ksh
22059 413262 1172 0 3 0x9a poll sshd
39268 64411 1 0 3 0x100083 ttyin getty
1172 126401 1 0 3 0x88 poll sshd
40496 277032 33423 74 3 0x100092 bpf pflogd
33423 100156 1 0 3 0x80 netio pflogd
35742 124046 4269 73 3 0x100090 kqread syslogd
4269 147316 1 0 3 0x100082 netio syslogd
45555 453970 1 0 3 0x100080 kqread resolvd
95195 476375 52184 77 3 0x100092 kqread dhcpleased
4499 408027 52184 77 3 0x100092 kqread dhcpleased
52184 475837 1 0 3 0x80 kqread dhcpleased
72122 176255 0 0 3 0x14200 bored smr
77528 173795 0 0 2 0x14200 zerothread
69997 194297 0 0 3 0x14200 aiodoned aiodoned
55535 202637 0 0 3 0x14200 syncer update
41156 225821 0 0 3 0x14200 cleaner cleaner
29213 429232 0 0 3 0x14200 reaper reaper
27159 250438 0 0 3 0x14200 pgdaemon pagedaemon
5467 111255 0 0 3 0x14200 bored viomb
6487 13455 0 0 3 0x40014200 acpi0 acpi0
20222 120243 0 0 3 0x40014200 idle1
95372 408344 0 0 3 0x14200 bored softnet
27228 85263 0 0 3 0x14200 bored systqmp
89363 390641 0 0 3 0x14200 bored systq
98535 1810 0 0 3 0x40014200 bored softclock
65749 311853 0 0 3 0x40014200 idle0
1 405445 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 73387 (syz-executor.1) thread 0xffff800021266d30 (103873)
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10157 6484K 6940K 78643K 18644 0
pcb 13 16K 18K 78643K 2521 0
rtable 119 16K 16K 78643K 1907 0
ifaddr 67 17K 17K 78643K 743 0
sysctl 2 0K 0K 78643K 2 0
counters 46 34K 34K 78643K 186 0
ioctlops 0 0K 6K 78643K 2863 0
iov 0 0K 24K 78643K 548 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1317 83K 83K 78643K 6154 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 28 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 789 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12598 0
file desc 6 17K 25K 78643K 7186 0
sigio 0 0K 0K 78643K 52 0
proc 71 87K 111K 78643K 1043 0
subproc 26 1K 2K 78643K 263 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 225 0
in_multi 30 2K 2K 78643K 823 0
ether_multi 1 0K 0K 78643K 105 0
mrt 1 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 163 731K 731K 78643K 163 0
exec 0 0K 2K 78643K 1227 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 326 292K 308K 78643K 95203 0
UVM aobj 57 2K 2K 78643K 68 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 356 0
NDP 10 0K 0K 78643K 200 0
temp 101 4217K 4297K 78643K 38496 0
kqueue 10 14K 20K 78643K 277 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 332 0 329 4 3 1 2 0 8 0
rtentry 112 477 0 441 2 0 2 2 0 8 0
unpcb 128 4866 0 4851 57 55 2 7 0 8 1
syncache 296 30 0 30 10 10 0 1 0 8 0
tcpqe 32 123 26 123 1 1 0 1 0 8 0
tcpcb 736 1880 0 1872 90 88 2 11 0 8 1
arp 120 41 0 35 1 0 1 1 0 8 0
inpcb 304 7005 0 6996 124 119 5 11 0 8 4
rttmr 72 5 0 5 2 2 0 1 0 8 0
nd6 48 156 0 150 3 2 1 1 0 8 0
pkpcb 40 42 0 42 3 2 1 1 0 8 1
kcovpl 48 20 0 18 1 0 1 1 0 8 0
ppxss 1248 14 0 14 5 5 0 1 0 8 0
pfstscr 40 9 0 9 2 2 0 1 0 8 0
pffrag 232 29 0 29 8 8 0 1 0 482 0
pffrnode 88 29 0 29 8 8 0 1 0 8 0
pffrent 40 241 0 241 9 9 0 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 297 0 289 2 1 1 2 0 8 0
pftag 88 3 0 2 2 1 1 1 0 8 0
pfstitem 24 55 0 53 1 0 1 1 0 8 0
pfstkey 112 73 0 71 1 0 1 1 0 8 0
pfstate 320 64 0 62 2 1 1 2 0 8 0
pfrule 1360 486 0 457 4 1 3 3 0 8 0
art_heap8 4096 5 0 4 3 2 1 3 0 8 0
art_heap4 256 2025 0 1874 24 14 10 15 0 8 0
art_table 32 2030 0 1878 2 0 2 2 0 8 0
art_node 16 471 0 442 1 0 1 1 0 8 0
sysvmsgpl 40 12 0 8 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 787 0 777 1 0 1 1 0 8 0
shmpl 112 65 0 11 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 12736 0 11315 89 0 89 89 0 8 0
ffsino 272 12736 0 11315 95 0 95 95 0 8 0
nchpl 144 22901 0 21302 61 0 61 61 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 83188 0 83188 10 9 1 1 0 8 1
percpumem 16 105 0 70 1 0 1 1 0 8 0
vcpupl 2048 20 0 0 3 0 3 3 0 8 0
vmpool 560 94 0 74 2 0 2 2 0 8 0
pfiaddrpl 120 60 0 57 4 3 1 1 0 8 0
scsiplug 72 8 0 8 2 2 0 1 0 8 0
scxspl 216 72753 0 72753 18 17 1 8 0 8 1
plimitpl 152 583 0 574 1 0 1 1 0 8 0
sigapl 424 7404 0 7349 9 2 7 7 0 8 0
futexpl 64 51579 0 51579 12 11 1 1 0 8 1
knotepl 112 108 0 0 2 0 2 2 0 8 0
kqueuepl 216 2518 0 2512 39 36 3 8 0 8 2
pipepl 336 1339 0 1329 55 50 5 7 0 8 4
fdescpl 496 7368 0 7349 3 0 3 3 0 8 0
filepl 152 60419 0 60311 137 125 12 14 0 8 7
lockfpl 104 1713 0 1711 4 3 1 3 0 8 0
lockfspl 48 436 0 434 1 0 1 1 0 8 0
sessionpl 144 33 0 22 1 0 1 1 0 8 0
pgrppl 48 100 0 89 1 0 1 1 0 8 0
ucredpl 96 17228 0 17213 1 0 1 1 0 8 0
zombiepl 144 7350 0 7349 4 3 1 1 0 8 0
processpl 1064 7404 0 7349 4 0 4 4 0 8 0
procpl 672 22417 0 22351 28 21 7 8 0 8 1
srpgc 96 21 0 21 6 6 0 1 0 8 0
sosppl 168 44 0 44 12 12 0 1 0 8 0
sockpl 480 12261 0 12234 336 325 11 29 0 8 7
mcl64k 65536 36 0 0 4 1 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 33 0 0 2 0 2 2 0 8 0
mcl9k 9216 19 0 0 2 0 2 2 0 8 0
mcl8k 8192 17 0 0 3 1 2 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 12 0 0 1 0 1 1 0 8 0
mcl2k 2048 436 0 0 37 16 21 37 0 8 0
mtagpl 96 243 0 0 5 0 5 5 0 8 0
mbufpl 256 1083 0 0 37 0 37 37 0 8 0
bufpl 288 14278 0 7934 454 0 454 454 0 8 0
anonpl 24 2159588 0 2144995 301 187 114 134 0 186 0
amapchunkpl 152 234486 0 233809 91 63 28 41 0 158 0
amappl16 200 19201 0 18647 129 99 30 42 0 8 0
amappl15 192 1497 0 1491 1 0 1 1 0 8 0
amappl14 184 1389 0 1387 1 0 1 1 0 8 0
amappl13 176 1084 0 1081 1 0 1 1 0 8 0
amappl12 168 3158 0 3153 1 0 1 1 0 8 0
amappl11 160 731 0 717 1 0 1 1 0 8 0
amappl10 152 164 0 160 1 0 1 1 0 8 0
amappl9 144 618 0 614 1 0 1 1 0 8 0
amappl8 136 1259 0 1191 4 1 3 3 0 8 0
amappl7 128 721 0 709 1 0 1 1 0 8 0
amappl6 120 386 0 366 1 0 1 1 0 8 0
amappl5 112 1831 0 1813 1 0 1 1 0 8 0
amappl4 104 3704 0 3675 1 0 1 1 0 8 0
amappl3 96 4638 0 4617 1 0 1 1 0 8 0
amappl2 88 4392 0 4347 4 2 2 2 0 8 0
amappl1 80 139876 0 139403 13 3 10 13 0 8 0
amappl 88 94478 0 94266 6 1 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 67 0 11 2 0 2 2 0 8 0
uaddrrnd 24 7462 0 7423 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 7462 0 7423 1 0 1 1 0 8 0
vmmpekpl 168 58338 0 58295 3 0 3 3 0 8 0
vmmpepl 168 683808 0 681800 335 221 114 117 0 357 24
vmsppl 368 7461 0 7423 4 0 4 4 0 8 0
rwobjpl 56 175149 0 167747 124 19 105 108 0 8 0
pdppl 4096 14932 0 14866 90 22 68 68 0 8 2
pvpl 32 3785595 0 3767329 549 356 193 242 0 265 14
pmappl 248 7461 0 7423 3 0 3 3 0 8 0
extentpl 40 57 0 38 1 0 1 1 0 8 0
phpool 112 1014 0 206 24 0 24 24 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, count: -6
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffd1340, count: 12
ddb{1}> trace
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffd1340, count: -3
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 5845290fe6de Replace deprecated IO::Socket::INET6 with IO:..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=107ec17eb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=6dde3fda33074a256318
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6dde3f...@syzkaller.appspotmail.com
b � + &~� b � + &~� b � + &~� b � + &~� b � + &~�witness: userret: returning with the following locks held:
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
panic: witness_warn
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
28444 34193 0 0 0 1 syz-executor.0
*103873 73387 0 0x1000 0x4080000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: witness_warn
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, count: -6
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800022127c90
rbx 0xffffffff82814bff cpu_info_full_primary+0x2bff
rdx 0
rcx 0
rax 0xffff800021266d30
r8 0x101010101010101
r9 0x8080808080808080
r10 0xcf0e64f164302543
r11 0x7f6f92aa9eca080a
r12 0xffffffff82814a00 cpu_info_full_primary+0x2a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81a3ecd8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800022127c80
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=103873 stat=onproc
flags process=1000<SINGLEEXIT> proc=4080000<SUSPSINGLE,THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000212677b0,0xffff800021266020
process=0xffff800021ecc868 user=0xffff800022122000, vmspace=0xfffffd8062027468
estcpu=36, cpticks=3, pctcpu=0.0
user=0, sys=3, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
34193 28444 72778 0 7 0 syz-executor.0
34193 375813 72778 0 2 0x4000000 syz-executor.0
34193 20622 72778 0 2 0x4000000 syz-executor.0
*73387 103873 23547 0 7 0x4081000 syz-executor.1
73387 104527 23547 0 3 0x4003000 suspend syz-executor.1
23547 145322 78752 0 3 0x82 nanoslp syz-executor.1
72778 51870 78752 0 3 0x82 nanoslp syz-executor.0
11425 367343 0 0 3 0x14200 acct acct
67442 382473 0 0 3 0x14280 nfsidl nfsio
42404 491660 0 0 3 0x14280 nfsidl nfsio
82390 468300 0 0 3 0x14280 nfsidl nfsio
74694 197226 0 0 3 0x14280 nfsidl nfsio
64636 360929 0 0 3 0x14280 nfsidl nfsio
93550 322378 0 0 3 0x14280 nfsidl nfsio
39745 11823 0 0 3 0x14280 nfsidl nfsio
37324 474900 0 0 3 0x14280 nfsidl nfsio
65330 411287 0 0 3 0x14280 nfsidl nfsio
96951 170303 0 0 3 0x14280 nfsidl nfsio
89503 346386 0 0 3 0x14280 nfsidl nfsio
98351 404375 0 0 3 0x14280 nfsidl nfsio
14029 22386 0 0 3 0x14280 nfsidl nfsio
23084 244645 0 0 3 0x14280 nfsidl nfsio
14090 394062 0 0 3 0x14280 nfsidl nfsio
99567 45098 0 0 3 0x14280 nfsidl nfsio
98200 506610 0 0 3 0x14280 nfsidl nfsio
20002 507854 0 0 3 0x14280 nfsidl nfsio
85204 238327 0 0 3 0x14280 nfsidl nfsio
26081 445920 0 0 3 0x14280 nfsidl nfsio
28828 330245 0 0 3 0x14200 bored sosplice
78752 506592 53074 0 3 0x82 thrsleep syz-fuzzer
78752 356446 53074 0 3 0x4000082 nanoslp syz-fuzzer
78752 333552 53074 0 3 0x4000082 kqread syz-fuzzer
78752 339037 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 293450 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 518364 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 225217 53074 0 3 0x4000082 thrsleep syz-fuzzer
78752 269818 53074 0 3 0x4000082 thrsleep syz-fuzzer
53074 91720 22059 0 3 0x10008a sigsusp ksh
22059 413262 1172 0 3 0x9a poll sshd
39268 64411 1 0 3 0x100083 ttyin getty
1172 126401 1 0 3 0x88 poll sshd
40496 277032 33423 74 3 0x100092 bpf pflogd
33423 100156 1 0 3 0x80 netio pflogd
35742 124046 4269 73 3 0x100090 kqread syslogd
4269 147316 1 0 3 0x100082 netio syslogd
45555 453970 1 0 3 0x100080 kqread resolvd
95195 476375 52184 77 3 0x100092 kqread dhcpleased
4499 408027 52184 77 3 0x100092 kqread dhcpleased
52184 475837 1 0 3 0x80 kqread dhcpleased
72122 176255 0 0 3 0x14200 bored smr
77528 173795 0 0 2 0x14200 zerothread
69997 194297 0 0 3 0x14200 aiodoned aiodoned
55535 202637 0 0 3 0x14200 syncer update
41156 225821 0 0 3 0x14200 cleaner cleaner
29213 429232 0 0 3 0x14200 reaper reaper
27159 250438 0 0 3 0x14200 pgdaemon pagedaemon
5467 111255 0 0 3 0x14200 bored viomb
6487 13455 0 0 3 0x40014200 acpi0 acpi0
20222 120243 0 0 3 0x40014200 idle1
95372 408344 0 0 3 0x14200 bored softnet
27228 85263 0 0 3 0x14200 bored systqmp
89363 390641 0 0 3 0x14200 bored systq
98535 1810 0 0 3 0x40014200 bored softclock
65749 311853 0 0 3 0x40014200 idle0
1 405445 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 73387 (syz-executor.1) thread 0xffff800021266d30 (103873)
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10157 6484K 6940K 78643K 18644 0
pcb 13 16K 18K 78643K 2521 0
rtable 119 16K 16K 78643K 1907 0
ifaddr 67 17K 17K 78643K 743 0
sysctl 2 0K 0K 78643K 2 0
counters 46 34K 34K 78643K 186 0
ioctlops 0 0K 6K 78643K 2863 0
iov 0 0K 24K 78643K 548 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1317 83K 83K 78643K 6154 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 28 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 789 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12598 0
file desc 6 17K 25K 78643K 7186 0
sigio 0 0K 0K 78643K 52 0
proc 71 87K 111K 78643K 1043 0
subproc 26 1K 2K 78643K 263 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 225 0
in_multi 30 2K 2K 78643K 823 0
ether_multi 1 0K 0K 78643K 105 0
mrt 1 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 163 731K 731K 78643K 163 0
exec 0 0K 2K 78643K 1227 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 326 292K 308K 78643K 95203 0
UVM aobj 57 2K 2K 78643K 68 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 356 0
NDP 10 0K 0K 78643K 200 0
temp 101 4217K 4297K 78643K 38496 0
kqueue 10 14K 20K 78643K 277 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 332 0 329 4 3 1 2 0 8 0
rtentry 112 477 0 441 2 0 2 2 0 8 0
unpcb 128 4866 0 4851 57 55 2 7 0 8 1
syncache 296 30 0 30 10 10 0 1 0 8 0
tcpqe 32 123 26 123 1 1 0 1 0 8 0
tcpcb 736 1880 0 1872 90 88 2 11 0 8 1
arp 120 41 0 35 1 0 1 1 0 8 0
inpcb 304 7005 0 6996 124 119 5 11 0 8 4
rttmr 72 5 0 5 2 2 0 1 0 8 0
nd6 48 156 0 150 3 2 1 1 0 8 0
pkpcb 40 42 0 42 3 2 1 1 0 8 1
kcovpl 48 20 0 18 1 0 1 1 0 8 0
ppxss 1248 14 0 14 5 5 0 1 0 8 0
pfstscr 40 9 0 9 2 2 0 1 0 8 0
pffrag 232 29 0 29 8 8 0 1 0 482 0
pffrnode 88 29 0 29 8 8 0 1 0 8 0
pffrent 40 241 0 241 9 9 0 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 297 0 289 2 1 1 2 0 8 0
pftag 88 3 0 2 2 1 1 1 0 8 0
pfstitem 24 55 0 53 1 0 1 1 0 8 0
pfstkey 112 73 0 71 1 0 1 1 0 8 0
pfstate 320 64 0 62 2 1 1 2 0 8 0
pfrule 1360 486 0 457 4 1 3 3 0 8 0
art_heap8 4096 5 0 4 3 2 1 3 0 8 0
art_heap4 256 2025 0 1874 24 14 10 15 0 8 0
art_table 32 2030 0 1878 2 0 2 2 0 8 0
art_node 16 471 0 442 1 0 1 1 0 8 0
sysvmsgpl 40 12 0 8 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 787 0 777 1 0 1 1 0 8 0
shmpl 112 65 0 11 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 12736 0 11315 89 0 89 89 0 8 0
ffsino 272 12736 0 11315 95 0 95 95 0 8 0
nchpl 144 22901 0 21302 61 0 61 61 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 83188 0 83188 10 9 1 1 0 8 1
percpumem 16 105 0 70 1 0 1 1 0 8 0
vcpupl 2048 20 0 0 3 0 3 3 0 8 0
vmpool 560 94 0 74 2 0 2 2 0 8 0
pfiaddrpl 120 60 0 57 4 3 1 1 0 8 0
scsiplug 72 8 0 8 2 2 0 1 0 8 0
scxspl 216 72753 0 72753 18 17 1 8 0 8 1
plimitpl 152 583 0 574 1 0 1 1 0 8 0
sigapl 424 7404 0 7349 9 2 7 7 0 8 0
futexpl 64 51579 0 51579 12 11 1 1 0 8 1
knotepl 112 108 0 0 2 0 2 2 0 8 0
kqueuepl 216 2518 0 2512 39 36 3 8 0 8 2
pipepl 336 1339 0 1329 55 50 5 7 0 8 4
fdescpl 496 7368 0 7349 3 0 3 3 0 8 0
filepl 152 60419 0 60311 137 125 12 14 0 8 7
lockfpl 104 1713 0 1711 4 3 1 3 0 8 0
lockfspl 48 436 0 434 1 0 1 1 0 8 0
sessionpl 144 33 0 22 1 0 1 1 0 8 0
pgrppl 48 100 0 89 1 0 1 1 0 8 0
ucredpl 96 17228 0 17213 1 0 1 1 0 8 0
zombiepl 144 7350 0 7349 4 3 1 1 0 8 0
processpl 1064 7404 0 7349 4 0 4 4 0 8 0
procpl 672 22417 0 22351 28 21 7 8 0 8 1
srpgc 96 21 0 21 6 6 0 1 0 8 0
sosppl 168 44 0 44 12 12 0 1 0 8 0
sockpl 480 12261 0 12234 336 325 11 29 0 8 7
mcl64k 65536 36 0 0 4 1 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 33 0 0 2 0 2 2 0 8 0
mcl9k 9216 19 0 0 2 0 2 2 0 8 0
mcl8k 8192 17 0 0 3 1 2 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 12 0 0 1 0 1 1 0 8 0
mcl2k 2048 436 0 0 37 16 21 37 0 8 0
mtagpl 96 243 0 0 5 0 5 5 0 8 0
mbufpl 256 1083 0 0 37 0 37 37 0 8 0
bufpl 288 14278 0 7934 454 0 454 454 0 8 0
anonpl 24 2159588 0 2144995 301 187 114 134 0 186 0
amapchunkpl 152 234486 0 233809 91 63 28 41 0 158 0
amappl16 200 19201 0 18647 129 99 30 42 0 8 0
amappl15 192 1497 0 1491 1 0 1 1 0 8 0
amappl14 184 1389 0 1387 1 0 1 1 0 8 0
amappl13 176 1084 0 1081 1 0 1 1 0 8 0
amappl12 168 3158 0 3153 1 0 1 1 0 8 0
amappl11 160 731 0 717 1 0 1 1 0 8 0
amappl10 152 164 0 160 1 0 1 1 0 8 0
amappl9 144 618 0 614 1 0 1 1 0 8 0
amappl8 136 1259 0 1191 4 1 3 3 0 8 0
amappl7 128 721 0 709 1 0 1 1 0 8 0
amappl6 120 386 0 366 1 0 1 1 0 8 0
amappl5 112 1831 0 1813 1 0 1 1 0 8 0
amappl4 104 3704 0 3675 1 0 1 1 0 8 0
amappl3 96 4638 0 4617 1 0 1 1 0 8 0
amappl2 88 4392 0 4347 4 2 2 2 0 8 0
amappl1 80 139876 0 139403 13 3 10 13 0 8 0
amappl 88 94478 0 94266 6 1 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 67 0 11 2 0 2 2 0 8 0
uaddrrnd 24 7462 0 7423 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 7462 0 7423 1 0 1 1 0 8 0
vmmpekpl 168 58338 0 58295 3 0 3 3 0 8 0
vmmpepl 168 683808 0 681800 335 221 114 117 0 357 24
vmsppl 368 7461 0 7423 4 0 4 4 0 8 0
rwobjpl 56 175149 0 167747 124 19 105 108 0 8 0
pdppl 4096 14932 0 14866 90 22 68 68 0 8 2
pvpl 32 3785595 0 3767329 549 356 193 242 0 265 14
pmappl 248 7461 0 7423 3 0 3 3 0 8 0
extentpl 40 57 0 38 1 0 1 1 0 8 0
phpool 112 1014 0 206 24 0 24 24 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff800021266d30) at userret+0x253 sys/kern/kern_sig.c:1950
syscall(ffff800022127f30) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800022127f30) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4dda93edf60, count: -6
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffd1340, count: 12
ddb{1}> trace
x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
end of kernel
end trace frame: 0x7f7ffffd1340, count: -3
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Dec 22, 2021, 5:09:25 PM12/22/21
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 5845290fe6de Replace deprecated IO::Socket::INET6 with IO:..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10ce1595b00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6dde3f...@syzkaller.appspotmail.com
login: witness: userret: returning with the following locks held:
445713 44828 73 0x100010 0 0 syslogd
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: witness_warn
ddb{1}> trace
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000212b8470
rbx 0xffff800020d39bff
rdx 0x3fd
rcx 0
rax 0x14
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc83d85b0359851cf
r11 0x1f1fca05086808ff
r12 0xffff800020d39a00
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=411516 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800021254a80,0xffff800021254550
process=0xffff8000211f1900 user=0xffff8000212b3000, vmspace=0xfffffd807efffcf0
estcpu=36, cpticks=4, pctcpu=0.0
user=0, sys=4, intr=0
ddb{1}> ps
3882 305584 76065 0 3 0x4000080 fsleep syz-executor.0
3882 193809 76065 0 2 0x4000000 syz-executor.0
* 3882 411516 76065 0 7 0x4000000 syz-executor.0
3882 379592 76065 0 3 0x4000080 dklk syz-executor.0
26363 74012 68691 0 2 0 syz-executor.1
26363 99127 68691 0 3 0x4000080 fsleep syz-executor.1
26363 254575 68691 0 3 0x4000080 fsleep syz-executor.1
26363 260652 68691 0 3 0x4000080 fsleep syz-executor.1
26363 119598 68691 0 2 0x4000000 syz-executor.1
68691 289740 77754 0 2 0x482 syz-executor.1
76065 291676 77754 0 3 0x82 nanoslp syz-executor.0
77754 336187 7802 0 3 0x82 thrsleep syz-execprog
77754 136443 7802 0 2 0x4000482 syz-execprog
77754 61685 7802 0 3 0x4000082 thrsleep syz-execprog
77754 417558 7802 0 3 0x4000082 thrsleep syz-execprog
77754 510775 7802 0 3 0x4000082 kqread syz-execprog
77754 261341 7802 0 3 0x4000082 thrsleep syz-execprog
77754 220644 7802 0 3 0x4000082 thrsleep syz-execprog
7802 471913 35007 0 3 0x10008a sigsusp ksh
35007 334843 43343 0 3 0x9a poll sshd
901 81551 1 0 3 0x100083 ttyin getty
43343 393831 1 0 3 0x88 poll sshd
90752 523986 13682 74 3 0x100092 bpf pflogd
13682 222458 1 0 3 0x80 netio pflogd
44828 445713 94012 73 7 0x100010 syslogd
94012 291113 1 0 3 0x100082 netio syslogd
85697 420356 1 0 3 0x100080 kqread resolvd
80848 2158 10262 77 3 0x100092 kqread dhcpleased
27118 261534 10262 77 3 0x100092 kqread dhcpleased
10262 205462 1 0 3 0x80 kqread dhcpleased
64886 79503 0 0 3 0x14200 bored smr
69158 176912 0 0 2 0x14200 zerothread
80060 143973 0 0 3 0x14200 aiodoned aiodoned
33368 40635 0 0 3 0x14200 syncer update
5026 486437 0 0 3 0x14200 cleaner cleaner
90575 126035 0 0 3 0x14200 reaper reaper
16400 428579 0 0 3 0x14200 pgdaemon pagedaemon
24937 340394 0 0 3 0x14200 bored viomb
56245 329564 0 0 3 0x40014200 acpi0 acpi0
46660 289873 0 0 3 0x40014200 idle1
20424 112215 0 0 3 0x14200 bored softnet
57044 515606 0 0 3 0x14200 bored systqmp
87324 404494 0 0 3 0x14200 bored systq
45570 478615 0 0 3 0x40014200 bored softclock
50345 251344 0 0 3 0x40014200 idle0
1 409544 0 0 3 0x82 wait init
Process 3882 (syz-executor.0) thread 0xffff8000212547e0 (411516)
exclusive rrwlock inode r = 0 (0xfffffd806e786700)
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2888
pcb 13 8K 8K 78643K 13 0
rtable 106 3K 3K 78643K 172 0
ifaddr 44 10K 10K 78643K 45 0
counters 44 34K 34K 78643K 44 0
ioctlops 0 0K 4K 78643K 1481 0
proc 67 87K 111K 78643K 338 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 2K 78643K 413 0
UVM aobj 3 2K 2K 78643K 3 0
temp 33 4182K 4246K 78643K 3515 0
kqueue 10 14K 14K 78643K 10 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 128 35 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 6 0 0 1 0 1 1 0 8 0
inpcb 304 40 0 34 1 0 1 1 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 320 11 0 2 1 0 1 1 0 8 0
pfrule 1360 21 0 15 2 0 2 2 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
ffsino 272 1555 0 145 95 0 95 95 0 8 0
nchpl 144 1921 0 299 61 0 61 61 0 8 0
uvmvnodes 80 1566 0 0 32 0 32 32 0 8 0
vnodes 224 1566 0 0 93 0 93 93 0 8 0
namei 1024 5291 0 5291 2 1 1 1 0 8 1
percpumem 16 34 0 0 1 0 1 1 0 8 0
scxspl 216 5772 0 5772 10 9 1 8 0 8 1
plimitpl 152 18 0 9 1 0 1 1 0 8 0
sigapl 424 348 0 315 4 0 4 4 0 8 0
futexpl 64 326 0 322 1 0 1 1 0 8 0
knotepl 112 52 0 0 2 0 2 2 0 8 0
kqueuepl 216 6 0 0 1 0 1 1 0 8 0
pipepl 336 87 0 77 2 1 1 1 0 8 0
fdescpl 496 334 0 315 3 0 3 3 0 8 0
filepl 152 1419 0 1336 4 0 4 4 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 20 0 9 1 0 1 1 0 8 0
pgrppl 48 20 0 9 1 0 1 1 0 8 0
ucredpl 96 108 0 95 1 0 1 1 0 8 0
zombiepl 144 315 0 315 2 1 1 1 0 8 1
processpl 1064 348 0 315 3 0 3 3 0 8 0
procpl 672 551 0 504 4 0 4 4 0 8 0
sockpl 480 96 0 72 5 1 4 4 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 57 0 0 8 0 8 8 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 157 0 0 9 0 9 9 0 8 0
bufpl 288 3651 0 133 252 0 252 252 0 8 0
anonpl 24 61599 0 56991 35 3 32 32 0 186 4
amapchunkpl 152 6245 0 5847 17 1 16 16 0 158 0
amappl16 200 238 0 176 4 0 4 4 0 8 0
amappl15 192 84 0 78 1 0 1 1 0 8 0
amappl14 184 2 0 1 1 0 1 1 0 8 0
amappl13 176 61 0 58 2 1 1 1 0 8 0
amappl12 168 89 0 82 1 0 1 1 0 8 0
amappl11 160 46 0 32 1 0 1 1 0 8 0
amappl10 152 17 0 13 1 0 1 1 0 8 0
amappl9 144 441 0 439 1 0 1 1 0 8 0
amappl8 136 313 0 296 2 1 1 1 0 8 0
amappl7 128 71 0 62 1 0 1 1 0 8 0
amappl6 120 150 0 135 1 0 1 1 0 8 0
amappl5 112 169 0 155 1 0 1 1 0 8 0
amappl4 104 603 0 580 1 0 1 1 0 8 0
amappl3 96 189 0 170 1 0 1 1 0 8 0
amappl2 88 438 0 398 2 0 2 2 0 8 1
amappl1 80 9729 0 9255 15 2 13 13 0 8 3
amappl 88 2595 0 2458 4 0 4 4 0 92 0
uaddrrnd 24 334 0 315 1 0 1 1 0 8 0
vmmpekpl 168 7589 0 7569 2 0 2 2 0 8 0
vmmpepl 168 32548 0 31237 67 3 64 64 0 357 7
vmsppl 368 333 0 315 2 0 2 2 0 8 0
rwobjpl 56 11483 0 9119 35 0 35 35 0 8 1
pdppl 4096 676 0 630 68 18 50 50 0 8 4
pvpl 32 193153 0 185450 147 6 141 141 0 265 78
pmappl 248 333 0 315 2 0 2 2 0 8 0
ddb{1}> machine ddbcpu 0
__mp_lock(ffffffff82952170) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82952170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff800021206240,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433
tsleep(fffffd806e98e450,11,ffffffff82462ccd,0) at tsleep+0x12c sys/kern/kern_synch.c:158
vwaitforio(fffffd806e98e3d0,0,ffffffff82462ccd,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1897
ffs_fsync(ffff800021206390) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:498
VOP_FSYNC(fffffd806e98e3d0,fffffd807f7d8a80,1,ffff8000ffff6d30) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:327
sys_fsync(ffff8000ffff6d30,ffff800021206480,ffff8000212064e0) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2888
syscall(ffff800021206550) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021206550) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{0}> trace
x86_ipi_db(ffffffff82813ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
__mp_lock(ffffffff82952170) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82952170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff800021206240,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433
tsleep(fffffd806e98e450,11,ffffffff82462ccd,0) at tsleep+0x12c sys/kern/kern_synch.c:158
vwaitforio(fffffd806e98e3d0,0,ffffffff82462ccd,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1897
ffs_fsync(ffff800021206390) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:498
VOP_FSYNC(fffffd806e98e3d0,fffffd807f7d8a80,1,ffff8000ffff6d30) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:327
sys_fsync(ffff8000ffff6d30,ffff800021206480,ffff8000212064e0) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2888
syscall(ffff800021206550) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021206550) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
ddb{1}> trace
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
ddb{1}>
HEAD commit: 5845290fe6de Replace deprecated IO::Socket::INET6 with IO:..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=6dde3fda33074a256318
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116fe77db00000
dashboard link: https://syzkaller.appspot.com/bug?extid=6dde3fda33074a256318
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6dde3f...@syzkaller.appspotmail.com
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
panic: witness_warn
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*411516 3882 0 0 0x4000000 1 syz-executor.0
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
panic: witness_warn
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
445713 44828 73 0x100010 0 0 syslogd
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff8000212547e0) at userret+0x253 sys/kern/kern_sig.c:1950
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcd714983470, count: 9
end of kernel
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}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: witness_warn
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff8000212547e0) at userret+0x253 sys/kern/kern_sig.c:1950
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcd714983470, count: -6
end of kernel
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000212b8470
rbx 0xffff800020d39bff
rdx 0x3fd
rcx 0
rax 0x14
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc83d85b0359851cf
r11 0x1f1fca05086808ff
r12 0xffff800020d39a00
r13 0
r14 0
r15 0x1
rip 0xffffffff81a3ecd8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000212b8460
r14 0
r15 0x1
rip 0xffffffff81a3ecd8 db_enter+0x18
cs 0x8
rflags 0x246
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=411516 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800021254a80,0xffff800021254550
process=0xffff8000211f1900 user=0xffff8000212b3000, vmspace=0xfffffd807efffcf0
estcpu=36, cpticks=4, pctcpu=0.0
user=0, sys=4, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
3882 281232 76065 0 2 0 syz-executor.0
3882 305584 76065 0 3 0x4000080 fsleep syz-executor.0
3882 193809 76065 0 2 0x4000000 syz-executor.0
* 3882 411516 76065 0 7 0x4000000 syz-executor.0
3882 379592 76065 0 3 0x4000080 dklk syz-executor.0
26363 74012 68691 0 2 0 syz-executor.1
26363 99127 68691 0 3 0x4000080 fsleep syz-executor.1
26363 254575 68691 0 3 0x4000080 fsleep syz-executor.1
26363 260652 68691 0 3 0x4000080 fsleep syz-executor.1
26363 119598 68691 0 2 0x4000000 syz-executor.1
68691 289740 77754 0 2 0x482 syz-executor.1
76065 291676 77754 0 3 0x82 nanoslp syz-executor.0
77754 336187 7802 0 3 0x82 thrsleep syz-execprog
77754 136443 7802 0 2 0x4000482 syz-execprog
77754 61685 7802 0 3 0x4000082 thrsleep syz-execprog
77754 417558 7802 0 3 0x4000082 thrsleep syz-execprog
77754 510775 7802 0 3 0x4000082 kqread syz-execprog
77754 261341 7802 0 3 0x4000082 thrsleep syz-execprog
77754 220644 7802 0 3 0x4000082 thrsleep syz-execprog
7802 471913 35007 0 3 0x10008a sigsusp ksh
35007 334843 43343 0 3 0x9a poll sshd
901 81551 1 0 3 0x100083 ttyin getty
43343 393831 1 0 3 0x88 poll sshd
90752 523986 13682 74 3 0x100092 bpf pflogd
13682 222458 1 0 3 0x80 netio pflogd
44828 445713 94012 73 7 0x100010 syslogd
94012 291113 1 0 3 0x100082 netio syslogd
85697 420356 1 0 3 0x100080 kqread resolvd
80848 2158 10262 77 3 0x100092 kqread dhcpleased
27118 261534 10262 77 3 0x100092 kqread dhcpleased
10262 205462 1 0 3 0x80 kqread dhcpleased
64886 79503 0 0 3 0x14200 bored smr
69158 176912 0 0 2 0x14200 zerothread
80060 143973 0 0 3 0x14200 aiodoned aiodoned
33368 40635 0 0 3 0x14200 syncer update
5026 486437 0 0 3 0x14200 cleaner cleaner
90575 126035 0 0 3 0x14200 reaper reaper
16400 428579 0 0 3 0x14200 pgdaemon pagedaemon
24937 340394 0 0 3 0x14200 bored viomb
56245 329564 0 0 3 0x40014200 acpi0 acpi0
46660 289873 0 0 3 0x40014200 idle1
20424 112215 0 0 3 0x14200 bored softnet
57044 515606 0 0 3 0x14200 bored systqmp
87324 404494 0 0 3 0x14200 bored systq
45570 478615 0 0 3 0x40014200 bored softclock
50345 251344 0 0 3 0x40014200 idle0
1 409544 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 3882 (syz-executor.0) thread 0xffff8000212547e0 (411516)
exclusive rwlock dklk r = 0 (0xffff8000006b6068)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
Process 44828 (syslogd) thread 0xffff8000ffff6d30 (445713)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vndioctl+0xcde sys/dev/vnd.c:498
#3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#5 sys_ioctl+0x4a2
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e786700)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2888
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
ddb{1}> show malloc
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10124 6457K 6457K 78643K 11240 0
pcb 13 8K 8K 78643K 13 0
rtable 106 3K 3K 78643K 172 0
ifaddr 44 10K 10K 78643K 45 0
counters 44 34K 34K 78643K 44 0
ioctlops 0 0K 4K 78643K 1481 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1179 74K 74K 78643K 1185 0
log 0 0K 0K 78643K 5 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 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 6 17K 25K 78643K 94 0
ACPI 1697 195K 286K 78643K 12598 0
proc 67 87K 111K 78643K 338 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
NFS daemon 1 16K 16K 78643K 1 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 25 122K 122K 78643K 25 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 2K 78643K 413 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 173 24K 24K 78643K 2898 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 aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 6 0K 0K 78643K 10 0
crypto data 1 1K 1K 78643K 1 0
temp 33 4182K 4246K 78643K 3515 0
kqueue 10 14K 14K 78643K 10 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 21 0 18 1 0 1 1 0 8 0
plcache 128 22 0 0 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 128 35 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 6 0 0 1 0 1 1 0 8 0
inpcb 304 40 0 34 1 0 1 1 0 8 0
nd6 48 6 0 0 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
pfstitem 24 11 0 2 1 0 1 1 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 320 11 0 2 1 0 1 1 0 8 0
pfrule 1360 21 0 15 2 0 2 2 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 1555 0 145 89 0 89 89 0 8 0
ffsino 272 1555 0 145 95 0 95 95 0 8 0
nchpl 144 1921 0 299 61 0 61 61 0 8 0
uvmvnodes 80 1566 0 0 32 0 32 32 0 8 0
vnodes 224 1566 0 0 93 0 93 93 0 8 0
namei 1024 5291 0 5291 2 1 1 1 0 8 1
percpumem 16 34 0 0 1 0 1 1 0 8 0
scxspl 216 5772 0 5772 10 9 1 8 0 8 1
plimitpl 152 18 0 9 1 0 1 1 0 8 0
sigapl 424 348 0 315 4 0 4 4 0 8 0
futexpl 64 326 0 322 1 0 1 1 0 8 0
knotepl 112 52 0 0 2 0 2 2 0 8 0
kqueuepl 216 6 0 0 1 0 1 1 0 8 0
pipepl 336 87 0 77 2 1 1 1 0 8 0
fdescpl 496 334 0 315 3 0 3 3 0 8 0
filepl 152 1419 0 1336 4 0 4 4 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 20 0 9 1 0 1 1 0 8 0
pgrppl 48 20 0 9 1 0 1 1 0 8 0
ucredpl 96 108 0 95 1 0 1 1 0 8 0
zombiepl 144 315 0 315 2 1 1 1 0 8 1
processpl 1064 348 0 315 3 0 3 3 0 8 0
procpl 672 551 0 504 4 0 4 4 0 8 0
sockpl 480 96 0 72 5 1 4 4 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 57 0 0 8 0 8 8 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 157 0 0 9 0 9 9 0 8 0
bufpl 288 3651 0 133 252 0 252 252 0 8 0
anonpl 24 61599 0 56991 35 3 32 32 0 186 4
amapchunkpl 152 6245 0 5847 17 1 16 16 0 158 0
amappl16 200 238 0 176 4 0 4 4 0 8 0
amappl15 192 84 0 78 1 0 1 1 0 8 0
amappl14 184 2 0 1 1 0 1 1 0 8 0
amappl13 176 61 0 58 2 1 1 1 0 8 0
amappl12 168 89 0 82 1 0 1 1 0 8 0
amappl11 160 46 0 32 1 0 1 1 0 8 0
amappl10 152 17 0 13 1 0 1 1 0 8 0
amappl9 144 441 0 439 1 0 1 1 0 8 0
amappl8 136 313 0 296 2 1 1 1 0 8 0
amappl7 128 71 0 62 1 0 1 1 0 8 0
amappl6 120 150 0 135 1 0 1 1 0 8 0
amappl5 112 169 0 155 1 0 1 1 0 8 0
amappl4 104 603 0 580 1 0 1 1 0 8 0
amappl3 96 189 0 170 1 0 1 1 0 8 0
amappl2 88 438 0 398 2 0 2 2 0 8 1
amappl1 80 9729 0 9255 15 2 13 13 0 8 3
amappl 88 2595 0 2458 4 0 4 4 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 2 0 0 1 0 1 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
uaddrrnd 24 334 0 315 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 334 0 315 1 0 1 1 0 8 0
vmmpekpl 168 7589 0 7569 2 0 2 2 0 8 0
vmmpepl 168 32548 0 31237 67 3 64 64 0 357 7
vmsppl 368 333 0 315 2 0 2 2 0 8 0
rwobjpl 56 11483 0 9119 35 0 35 35 0 8 1
pdppl 4096 676 0 630 68 18 50 50 0 8 4
pvpl 32 193153 0 185450 147 6 141 141 0 265 78
pmappl 248 333 0 315 2 0 2 2 0 8 0
extentpl 40 57 0 38 1 0 1 1 0 8 0
phpool 112 551 0 22 16 0 16 16 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82813ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82952170) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82952170) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82952170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff800021206240,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433
tsleep(fffffd806e98e450,11,ffffffff82462ccd,0) at tsleep+0x12c sys/kern/kern_synch.c:158
vwaitforio(fffffd806e98e3d0,0,ffffffff82462ccd,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1897
ffs_fsync(ffff800021206390) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:498
VOP_FSYNC(fffffd806e98e3d0,fffffd807f7d8a80,1,ffff8000ffff6d30) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:327
sys_fsync(ffff8000ffff6d30,ffff800021206480,ffff8000212064e0) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2888
syscall(ffff800021206550) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021206550) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe0410, count: 1
end of kernel
ddb{0}> trace
x86_ipi_db(ffffffff82813ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82952170) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82952170) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82952170,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff800021206240,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433
tsleep(fffffd806e98e450,11,ffffffff82462ccd,0) at tsleep+0x12c sys/kern/kern_synch.c:158
vwaitforio(fffffd806e98e3d0,0,ffffffff82462ccd,ffffffffffffffff) at vwaitforio+0x98 sys/kern/vfs_subr.c:1897
ffs_fsync(ffff800021206390) at ffs_fsync+0x38e sys/ufs/ffs/ffs_vnops.c:498
VOP_FSYNC(fffffd806e98e3d0,fffffd807f7d8a80,1,ffff8000ffff6d30) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:327
sys_fsync(ffff8000ffff6d30,ffff800021206480,ffff8000212064e0) at sys_fsync+0x109 sys/kern/vfs_syscalls.c:2888
syscall(ffff800021206550) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021206550) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe0410, count: -14
end of kernel
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff8000212547e0) at userret+0x253 sys/kern/kern_sig.c:1950
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcd714983470, count: 9
end of kernel
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
userret(ffff8000212547e0) at userret+0x253 sys/kern/kern_sig.c:1950
panic(ffffffff82446f88) at panic+0x177 sys/kern/subr_prf.c:202
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline]
witness_warn(2,0,ffffffff824cde14) at witness_warn+0x65e sys/kern/subr_witness.c:1473
syscall(ffff8000212b8710) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff8000212b8710) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcd714983470, count: -6
end of kernel
ddb{1}>
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