uvm_fault: VOP_ISLOCKED (3)
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syzbot
Dec 2, 2025, 3:17:27 AM (24 hours ago) Dec 2
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 2f5495769435 wrap the veb_port refcnt ops to make it a bit..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10606192580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=ee72d1644602b29030aa
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/274fd7e108af/disk-2f549576.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/d8f18c5da9ec/bsd-2f549576.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bda29e60514c/kernel-2f549576.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ee72d1...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8070c9ab98, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at VOP_ISLOCKED+0x36: movq 0x10(%rax),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*411904 77055 0 0 0x4000000 0 syz-executor
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: 1
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
*cpu0: uvm_fault(0xfffffd8070c9ab98, 0x10, 0, 1) -> e
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
ddb> show registers
rdi 0xfffffd8077102dc0
rsi 0x1726 __ALIGN_SIZE+0x726
rbp 0xffff80002a816830
rbx 0xfffffd8077102dc0
rdx 0
rcx 0x1726 __ALIGN_SIZE+0x726
rax 0
r8 0x30
r9 0
r10 0x997deab391de47d1
r11 0x61aecd7b994bc374
r12 0
r13 0x1726 __ALIGN_SIZE+0x726
r14 0xfffffd8077102dc0
r15 0xffff800000b58800
rip 0xffffffff81a9e196 VOP_ISLOCKED+0x36
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a816800
ss 0x10
VOP_ISLOCKED+0x36: movq 0x10(%rax),%r14
ddb> show proc
PROC (syz-executor) tid=411904 pid=77055 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=83, usrpri=83, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a830a90,0xffff80002a831500
process=0xffff800031500018 user=0xffff80002a812000, vmspace=0xfffffd8070c9ab98
estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
9808 184734 8345 0 2 0 syz-executor
9808 56175 8345 0 3 0x4000080 fsleep syz-executor
87518 14489 92590 0 2 0 syz-executor
87518 157469 92590 0 3 0x4000080 fsleep syz-executor
86655 326388 66538 0 2 0 syz-executor
86655 320087 66538 0 3 0x4000080 kqsel syz-executor
86655 355106 66538 0 2 0x4000000 syz-executor
11462 187354 27373 -1 3 0x10 vmmaplk syz-executor
11462 248111 27373 -1 3 0x4000090 ttyin syz-executor
11462 185376 27373 -1 2 0x4000010 syz-executor
73190 201456 28805 0 2 0x82000 syz-executor
73190 421075 28805 0 3 0x4002000 suspend syz-executor
36569 342878 50750 0 2 0 syz-executor
36569 499425 50750 0 3 0x4000080 fsleep syz-executor
77055 202801 23537 0 2 0 syz-executor
77055 76282 23537 0 3 0x4000080 pipewr syz-executor
*77055 411904 23537 0 7 0x4000000 syz-executor
77055 317127 23537 0 3 0x4000080 fsleep syz-executor
74008 395138 5766 0 2 0x1 syz-executor
74008 353488 5766 0 3 0x4000080 fsleep syz-executor
92590 238595 90332 0 3 0x82 nanoslp syz-executor
50750 400689 90332 0 3 0x82 nanoslp syz-executor
8345 255857 90332 0 3 0x82 nanoslp syz-executor
23537 161698 90332 0 3 0x82 nanoslp syz-executor
28805 420136 90332 0 3 0x82 nanoslp syz-executor
5766 799 90332 0 3 0x82 nanoslp syz-executor
27373 317428 90332 0 3 0x82 nanoslp syz-executor
66538 119299 90332 0 3 0x82 nanoslp syz-executor
90332 85772 50498 0 3 0x82 kqread syz-executor
50498 523811 40626 0 3 0x10008a sigsusp ksh
40626 94204 35259 0 3 0x98 kqread sshd-session
35259 96232 68137 0 3 0x92 kqread sshd-session
25861 165122 1 0 3 0x100083 ttyin getty
68137 131555 1 0 3 0x88 kqread sshd
19921 392644 40001 73 3 0x1100090 kqread syslogd
40001 255820 1 0 3 0x100082 sbwait syslogd
59980 437465 1 0 3 0x100080 kqread resolvd
78511 120615 21153 77 3 0x100092 kqread dhcpleased
31433 445171 21153 77 3 0x100092 kqread dhcpleased
21153 19475 1 0 3 0x80 kqread dhcpleased
71862 447952 0 0 3 0x14200 bored smr
10604 19586 0 0 2 0x14200 zerothread
76286 222086 0 0 3 0x14200 aiodoned aiodoned
5221 366213 0 0 3 0x14200 syncer update
91570 486218 0 0 3 0x14200 cleaner cleaner
80474 187413 0 0 3 0x14200 reaper reaper
2128 339766 0 0 3 0x14200 pgdaemon pagedaemon
95605 148121 0 0 3 0x14200 bored viomb
70669 47932 0 0 3 0x40014200 acpi0 acpi0
34669 496520 0 0 3 0x14200 bored softnet0
97101 31994 0 0 3 0x14200 bored systqmp
69859 386745 0 0 3 0x14200 bored systq
8074 482236 0 0 3 0x40014200 tmoslp softclock
79076 138906 0 0 3 0x40014200 idle0
1 320916 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10213 11194K 11972K 166960K 15353 0
pcb 18 18K 22K 166960K 559 0
rtable 262 12K 12K 166960K 679 0
pf 35 14K 19K 166960K 253 0
ifaddr 44 8K 9K 166960K 148 0
ifgroup 54 2K 2K 166960K 265 0
sysctl 4 1K 9K 166960K 17 0
counters 34 17K 18K 166960K 245 0
ioctlops 0 0K 4K 166960K 536 0
iov 0 0K 24K 166960K 113 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1648 103K 104K 166960K 3762 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 4 9K 13K 166960K 34 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 99 0
dirhash 12 2K 2K 166960K 33 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 236K 166960K 1746 0
sigio 1 0K 0K 166960K 42 0
proc 62 59K 75K 166960K 740 0
subproc 72 4K 4K 166960K 99 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 399 0
in_multi 99 7K 7K 166960K 207 0
ether_multi 1 0K 0K 166960K 20 0
mrt 1 0K 0K 166960K 17 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 217 970K 970K 166960K 217 0
exec 0 0K 1K 166960K 784 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 252 161K 176K 166960K 17162 0
UVM aobj 25 18K 18K 166960K 34 0
pinsyscall 39 78K 90K 166960K 2912 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 123 0
NDP 12 0K 2K 166960K 102 0
temp 75 8672K 8744K 166960K 92613 0
kqueue 14 22K 31K 166960K 329 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 256 0 253 3 2 1 3 0 8 0
rtentry 136 194 0 90 4 0 4 4 0 8 0
unpcb 144 1567 0 1550 7 5 2 6 0 8 1
syncache 336 14 0 14 2 1 1 1 0 8 1
tcpqe 32 8 0 8 2 1 1 1 0 8 1
tcpcb 736 1007 0 999 8 4 4 7 0 8 1
arp 96 30 0 13 1 0 1 1 0 8 0
ipq 40 8 0 1 1 0 1 1 0 8 0
ipqe 40 11 0 2 1 0 1 1 0 8 0
inpcb 328 2648 0 2636 18 13 5 13 0 8 2
ip6q 72 4 0 2 1 0 1 1 0 8 0
ip6af 40 7 0 4 1 0 1 1 0 8 0
nd6 112 39 0 14 1 0 1 1 0 8 0
pkpcb 40 8 0 8 2 1 1 1 0 8 1
kcovpl 48 11 0 3 1 0 1 1 0 8 0
mppekey 1024 3 0 3 1 1 0 1 0 8 0
ppxss 1072 186 0 186 2 1 1 1 0 8 1
pppxif 1384 15 0 15 2 1 1 1 0 8 1
pfrktable 1344 2 0 2 1 1 0 1 0 8 0
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pfstitem 24 2 0 0 1 0 1 1 0 8 0
pfstkey 128 2 0 0 1 0 1 1 0 8 0
pfstate 384 1 0 0 1 0 1 1 0 8 0
pfrule 1344 3 0 3 2 1 1 1 0 8 1
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 797 0 340 31 2 29 31 0 8 0
art_table 40 799 0 340 5 0 5 5 0 8 0
art_node 32 194 0 105 1 0 1 1 0 8 0
sysvmsgpl 40 49 0 9 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 93 0 83 1 0 1 1 0 8 0
shmpl 112 17 0 3 1 0 1 1 0 8 0
dirhash 1024 31 0 14 3 0 3 3 0 8 0
dino2pl 256 4720 0 3220 95 0 95 95 0 8 0
ffsino 256 4720 0 3220 95 0 95 95 0 8 0
nchpl 144 7134 0 5434 64 0 64 64 0 8 0
rtmask 32 23 0 23 2 1 1 1 0 8 1
vnodes 216 5926 0 0 330 0 330 330 0 8 0
vnodes: pool(0xffffffff838b1118:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd8077102f90 (p 0xfffffd8077102000)
namei 1024 26379 0 26378 3 2 1 2 0 8 0
vcpupl 3904 10 0 2 2 0 2 2 0 8 0
vmpool 800 14 0 6 1 0 1 1 0 8 0
kstatmem 264 160 0 136 3 1 2 3 0 8 0
scsiplug 72 7 0 7 2 1 1 1 0 8 1
scxspl 216 24677 0 24677 9 7 2 8 1 8 2
plimitpl 152 437 0 417 1 0 1 1 0 8 0
sigapl 424 2024 0 1981 6 0 6 6 0 8 0
knotepl 120 646698 0 646651 28 19 9 22 0 8 6
kqueuepl 184 640 0 629 4 3 1 4 0 8 0
pipepl 304 470 0 440 8 5 3 8 0 8 0
fdescpl 448 2002 0 1972 4 0 4 4 0 8 0
filepl 120 15928 0 15605 16 6 10 15 0 8 0
lockfpl 104 727 0 723 2 1 1 2 0 8 0
lockfspl 48 321 0 317 1 0 1 1 0 8 0
sessionpl 144 30 0 22 1 0 1 1 0 8 0
pgrppl 48 62 0 46 1 0 1 1 0 8 0
ucredpl 104 2884 0 2871 1 0 1 1 0 8 0
zombiepl 144 2123 0 2123 1 0 1 1 0 8 1
processpl 1152 2024 0 1981 4 0 4 4 0 8 0
procpl 664 4392 0 4336 7 1 6 6 0 8 0
sosppl 176 4 0 4 1 1 0 1 0 8 0
sockpl 552 4601 0 4569 15 9 6 13 0 8 1
mcl64k 65536 282 0 281 4 1 3 3 0 8 2
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl12k 12288 19 0 19 2 1 1 1 0 8 1
mcl9k 9216 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 28 0 28 2 1 1 1 0 8 1
mcl4k 4096 4683 0 4627 16 8 8 16 0 8 0
mcl2k2 2112 4 0 4 1 1 0 1 0 8 0
mcl2k 2048 3070 0 3059 5 2 3 5 0 8 1
mtagpl 96 372 0 91 7 0 7 7 0 8 0
mbufpl 256 29207 0 28728 374 343 31 278 0 8 0
bufpl 280 9119 0 2898 445 0 445 445 0 8 0
anonpl 24 270327 0 257475 137 22 115 137 0 187 0
amapchunkpl 152 57961 0 57305 40 0 40 40 0 158 13
amappl16 200 5165 0 4662 55 11 44 55 0 8 0
amappl15 192 1 0 1 1 1 0 1 0 8 0
amappl14 184 3 0 2 1 0 1 1 0 8 0
amappl13 176 456 0 455 1 0 1 1 0 8 0
amappl12 168 2373 0 2334 2 0 2 2 0 8 0
amappl11 160 5 0 5 1 1 0 1 0 8 0
amappl10 152 52 0 42 1 0 1 1 0 8 0
amappl9 144 257 0 257 1 1 0 1 0 8 0
amappl8 136 20 0 17 1 0 1 1 0 8 0
amappl7 128 86 0 84 1 0 1 1 0 8 0
amappl6 120 305 0 291 1 0 1 1 0 8 0
amappl5 112 72 0 64 1 0 1 1 0 8 0
amappl4 104 422 0 398 1 0 1 1 0 8 0
amappl3 96 10229 0 10131 3 0 3 3 0 8 0
amappl2 88 2160 0 2088 2 0 2 2 0 8 0
amappl1 80 17186 0 16638 13 0 13 13 0 8 0
amappl 88 16101 0 15918 5 0 5 5 0 92 0
uvmvnodes 80 151 0 0 4 0 4 4 0 8 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 128 256 0 256 2 1 1 1 0 8 1
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 20 0 19 1 0 1 1 0 8 0
aobjpl 72 33 0 9 1 0 1 1 0 8 0
uaddrrnd 24 2002 0 1972 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2002 0 1972 1 0 1 1 0 8 0
vmmpekpl 168 17022 0 16980 3 0 3 3 0 8 0
vmmpepl 168 131577 0 129234 129 15 114 129 0 357 0
vmsppl 368 2001 0 1972 4 1 3 4 0 8 0
rwobjpl 40 34118 0 32595 21 1 20 21 0 8 0
pdppl 4096 4038 0 3964 127 52 75 75 0 8 1
pvpl 32 837708 0 818249 239 33 206 239 0 265 0
pmappl 216 2015 0 1978 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 780 0 420 18 3 15 18 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
ddb> machine ddbcpu 1
No such command
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
---
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syzbot found the following issue on:
HEAD commit: 2f5495769435 wrap the veb_port refcnt ops to make it a bit..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10606192580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=ee72d1644602b29030aa
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/274fd7e108af/disk-2f549576.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/d8f18c5da9ec/bsd-2f549576.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bda29e60514c/kernel-2f549576.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ee72d1...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8070c9ab98, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at VOP_ISLOCKED+0x36: movq 0x10(%rax),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*411904 77055 0 0 0x4000000 0 syz-executor
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: 1
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
*cpu0: uvm_fault(0xfffffd8070c9ab98, 0x10, 0, 1) -> e
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
ddb> show registers
rdi 0xfffffd8077102dc0
rsi 0x1726 __ALIGN_SIZE+0x726
rbp 0xffff80002a816830
rbx 0xfffffd8077102dc0
rdx 0
rcx 0x1726 __ALIGN_SIZE+0x726
rax 0
r8 0x30
r9 0
r10 0x997deab391de47d1
r11 0x61aecd7b994bc374
r12 0
r13 0x1726 __ALIGN_SIZE+0x726
r14 0xfffffd8077102dc0
r15 0xffff800000b58800
rip 0xffffffff81a9e196 VOP_ISLOCKED+0x36
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a816800
ss 0x10
VOP_ISLOCKED+0x36: movq 0x10(%rax),%r14
ddb> show proc
PROC (syz-executor) tid=411904 pid=77055 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=83, usrpri=83, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a830a90,0xffff80002a831500
process=0xffff800031500018 user=0xffff80002a812000, vmspace=0xfffffd8070c9ab98
estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
9808 184734 8345 0 2 0 syz-executor
9808 56175 8345 0 3 0x4000080 fsleep syz-executor
87518 14489 92590 0 2 0 syz-executor
87518 157469 92590 0 3 0x4000080 fsleep syz-executor
86655 326388 66538 0 2 0 syz-executor
86655 320087 66538 0 3 0x4000080 kqsel syz-executor
86655 355106 66538 0 2 0x4000000 syz-executor
11462 187354 27373 -1 3 0x10 vmmaplk syz-executor
11462 248111 27373 -1 3 0x4000090 ttyin syz-executor
11462 185376 27373 -1 2 0x4000010 syz-executor
73190 201456 28805 0 2 0x82000 syz-executor
73190 421075 28805 0 3 0x4002000 suspend syz-executor
36569 342878 50750 0 2 0 syz-executor
36569 499425 50750 0 3 0x4000080 fsleep syz-executor
77055 202801 23537 0 2 0 syz-executor
77055 76282 23537 0 3 0x4000080 pipewr syz-executor
*77055 411904 23537 0 7 0x4000000 syz-executor
77055 317127 23537 0 3 0x4000080 fsleep syz-executor
74008 395138 5766 0 2 0x1 syz-executor
74008 353488 5766 0 3 0x4000080 fsleep syz-executor
92590 238595 90332 0 3 0x82 nanoslp syz-executor
50750 400689 90332 0 3 0x82 nanoslp syz-executor
8345 255857 90332 0 3 0x82 nanoslp syz-executor
23537 161698 90332 0 3 0x82 nanoslp syz-executor
28805 420136 90332 0 3 0x82 nanoslp syz-executor
5766 799 90332 0 3 0x82 nanoslp syz-executor
27373 317428 90332 0 3 0x82 nanoslp syz-executor
66538 119299 90332 0 3 0x82 nanoslp syz-executor
90332 85772 50498 0 3 0x82 kqread syz-executor
50498 523811 40626 0 3 0x10008a sigsusp ksh
40626 94204 35259 0 3 0x98 kqread sshd-session
35259 96232 68137 0 3 0x92 kqread sshd-session
25861 165122 1 0 3 0x100083 ttyin getty
68137 131555 1 0 3 0x88 kqread sshd
19921 392644 40001 73 3 0x1100090 kqread syslogd
40001 255820 1 0 3 0x100082 sbwait syslogd
59980 437465 1 0 3 0x100080 kqread resolvd
78511 120615 21153 77 3 0x100092 kqread dhcpleased
31433 445171 21153 77 3 0x100092 kqread dhcpleased
21153 19475 1 0 3 0x80 kqread dhcpleased
71862 447952 0 0 3 0x14200 bored smr
10604 19586 0 0 2 0x14200 zerothread
76286 222086 0 0 3 0x14200 aiodoned aiodoned
5221 366213 0 0 3 0x14200 syncer update
91570 486218 0 0 3 0x14200 cleaner cleaner
80474 187413 0 0 3 0x14200 reaper reaper
2128 339766 0 0 3 0x14200 pgdaemon pagedaemon
95605 148121 0 0 3 0x14200 bored viomb
70669 47932 0 0 3 0x40014200 acpi0 acpi0
34669 496520 0 0 3 0x14200 bored softnet0
97101 31994 0 0 3 0x14200 bored systqmp
69859 386745 0 0 3 0x14200 bored systq
8074 482236 0 0 3 0x40014200 tmoslp softclock
79076 138906 0 0 3 0x40014200 idle0
1 320916 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10213 11194K 11972K 166960K 15353 0
pcb 18 18K 22K 166960K 559 0
rtable 262 12K 12K 166960K 679 0
pf 35 14K 19K 166960K 253 0
ifaddr 44 8K 9K 166960K 148 0
ifgroup 54 2K 2K 166960K 265 0
sysctl 4 1K 9K 166960K 17 0
counters 34 17K 18K 166960K 245 0
ioctlops 0 0K 4K 166960K 536 0
iov 0 0K 24K 166960K 113 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1648 103K 104K 166960K 3762 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 4 9K 13K 166960K 34 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 99 0
dirhash 12 2K 2K 166960K 33 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 236K 166960K 1746 0
sigio 1 0K 0K 166960K 42 0
proc 62 59K 75K 166960K 740 0
subproc 72 4K 4K 166960K 99 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 399 0
in_multi 99 7K 7K 166960K 207 0
ether_multi 1 0K 0K 166960K 20 0
mrt 1 0K 0K 166960K 17 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 217 970K 970K 166960K 217 0
exec 0 0K 1K 166960K 784 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 252 161K 176K 166960K 17162 0
UVM aobj 25 18K 18K 166960K 34 0
pinsyscall 39 78K 90K 166960K 2912 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 123 0
NDP 12 0K 2K 166960K 102 0
temp 75 8672K 8744K 166960K 92613 0
kqueue 14 22K 31K 166960K 329 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 256 0 253 3 2 1 3 0 8 0
rtentry 136 194 0 90 4 0 4 4 0 8 0
unpcb 144 1567 0 1550 7 5 2 6 0 8 1
syncache 336 14 0 14 2 1 1 1 0 8 1
tcpqe 32 8 0 8 2 1 1 1 0 8 1
tcpcb 736 1007 0 999 8 4 4 7 0 8 1
arp 96 30 0 13 1 0 1 1 0 8 0
ipq 40 8 0 1 1 0 1 1 0 8 0
ipqe 40 11 0 2 1 0 1 1 0 8 0
inpcb 328 2648 0 2636 18 13 5 13 0 8 2
ip6q 72 4 0 2 1 0 1 1 0 8 0
ip6af 40 7 0 4 1 0 1 1 0 8 0
nd6 112 39 0 14 1 0 1 1 0 8 0
pkpcb 40 8 0 8 2 1 1 1 0 8 1
kcovpl 48 11 0 3 1 0 1 1 0 8 0
mppekey 1024 3 0 3 1 1 0 1 0 8 0
ppxss 1072 186 0 186 2 1 1 1 0 8 1
pppxif 1384 15 0 15 2 1 1 1 0 8 1
pfrktable 1344 2 0 2 1 1 0 1 0 8 0
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pfstitem 24 2 0 0 1 0 1 1 0 8 0
pfstkey 128 2 0 0 1 0 1 1 0 8 0
pfstate 384 1 0 0 1 0 1 1 0 8 0
pfrule 1344 3 0 3 2 1 1 1 0 8 1
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 797 0 340 31 2 29 31 0 8 0
art_table 40 799 0 340 5 0 5 5 0 8 0
art_node 32 194 0 105 1 0 1 1 0 8 0
sysvmsgpl 40 49 0 9 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 93 0 83 1 0 1 1 0 8 0
shmpl 112 17 0 3 1 0 1 1 0 8 0
dirhash 1024 31 0 14 3 0 3 3 0 8 0
dino2pl 256 4720 0 3220 95 0 95 95 0 8 0
ffsino 256 4720 0 3220 95 0 95 95 0 8 0
nchpl 144 7134 0 5434 64 0 64 64 0 8 0
rtmask 32 23 0 23 2 1 1 1 0 8 1
vnodes 216 5926 0 0 330 0 330 330 0 8 0
vnodes: pool(0xffffffff838b1118:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd8077102f90 (p 0xfffffd8077102000)
namei 1024 26379 0 26378 3 2 1 2 0 8 0
vcpupl 3904 10 0 2 2 0 2 2 0 8 0
vmpool 800 14 0 6 1 0 1 1 0 8 0
kstatmem 264 160 0 136 3 1 2 3 0 8 0
scsiplug 72 7 0 7 2 1 1 1 0 8 1
scxspl 216 24677 0 24677 9 7 2 8 1 8 2
plimitpl 152 437 0 417 1 0 1 1 0 8 0
sigapl 424 2024 0 1981 6 0 6 6 0 8 0
knotepl 120 646698 0 646651 28 19 9 22 0 8 6
kqueuepl 184 640 0 629 4 3 1 4 0 8 0
pipepl 304 470 0 440 8 5 3 8 0 8 0
fdescpl 448 2002 0 1972 4 0 4 4 0 8 0
filepl 120 15928 0 15605 16 6 10 15 0 8 0
lockfpl 104 727 0 723 2 1 1 2 0 8 0
lockfspl 48 321 0 317 1 0 1 1 0 8 0
sessionpl 144 30 0 22 1 0 1 1 0 8 0
pgrppl 48 62 0 46 1 0 1 1 0 8 0
ucredpl 104 2884 0 2871 1 0 1 1 0 8 0
zombiepl 144 2123 0 2123 1 0 1 1 0 8 1
processpl 1152 2024 0 1981 4 0 4 4 0 8 0
procpl 664 4392 0 4336 7 1 6 6 0 8 0
sosppl 176 4 0 4 1 1 0 1 0 8 0
sockpl 552 4601 0 4569 15 9 6 13 0 8 1
mcl64k 65536 282 0 281 4 1 3 3 0 8 2
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl12k 12288 19 0 19 2 1 1 1 0 8 1
mcl9k 9216 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 28 0 28 2 1 1 1 0 8 1
mcl4k 4096 4683 0 4627 16 8 8 16 0 8 0
mcl2k2 2112 4 0 4 1 1 0 1 0 8 0
mcl2k 2048 3070 0 3059 5 2 3 5 0 8 1
mtagpl 96 372 0 91 7 0 7 7 0 8 0
mbufpl 256 29207 0 28728 374 343 31 278 0 8 0
bufpl 280 9119 0 2898 445 0 445 445 0 8 0
anonpl 24 270327 0 257475 137 22 115 137 0 187 0
amapchunkpl 152 57961 0 57305 40 0 40 40 0 158 13
amappl16 200 5165 0 4662 55 11 44 55 0 8 0
amappl15 192 1 0 1 1 1 0 1 0 8 0
amappl14 184 3 0 2 1 0 1 1 0 8 0
amappl13 176 456 0 455 1 0 1 1 0 8 0
amappl12 168 2373 0 2334 2 0 2 2 0 8 0
amappl11 160 5 0 5 1 1 0 1 0 8 0
amappl10 152 52 0 42 1 0 1 1 0 8 0
amappl9 144 257 0 257 1 1 0 1 0 8 0
amappl8 136 20 0 17 1 0 1 1 0 8 0
amappl7 128 86 0 84 1 0 1 1 0 8 0
amappl6 120 305 0 291 1 0 1 1 0 8 0
amappl5 112 72 0 64 1 0 1 1 0 8 0
amappl4 104 422 0 398 1 0 1 1 0 8 0
amappl3 96 10229 0 10131 3 0 3 3 0 8 0
amappl2 88 2160 0 2088 2 0 2 2 0 8 0
amappl1 80 17186 0 16638 13 0 13 13 0 8 0
amappl 88 16101 0 15918 5 0 5 5 0 92 0
uvmvnodes 80 151 0 0 4 0 4 4 0 8 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 128 256 0 256 2 1 1 1 0 8 1
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 20 0 19 1 0 1 1 0 8 0
aobjpl 72 33 0 9 1 0 1 1 0 8 0
uaddrrnd 24 2002 0 1972 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2002 0 1972 1 0 1 1 0 8 0
vmmpekpl 168 17022 0 16980 3 0 3 3 0 8 0
vmmpepl 168 131577 0 129234 129 15 114 129 0 357 0
vmsppl 368 2001 0 1972 4 1 3 4 0 8 0
rwobjpl 40 34118 0 32595 21 1 20 21 0 8 0
pdppl 4096 4038 0 3964 127 52 75 75 0 8 1
pvpl 32 837708 0 818249 239 33 206 239 0 265 0
pmappl 216 2015 0 1978 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 780 0 420 18 3 15 18 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
ddb> machine ddbcpu 1
No such command
ddb> trace
VOP_ISLOCKED(fffffd8077102dc0) at VOP_ISLOCKED+0x36 sys/kern/vfs_vops.c:67
getnewvnode(1,ffff800000b58800,ffffffff83496028,ffff80002a8168e0) at getnewvnode+0x1f8 sys/kern/vfs_subr.c:429
ffs_vget(ffff800000b58800,d30f,ffff80002a8169b0) at ffs_vget+0xc3 sys/ufs/ffs/ffs_vfsops.c:1207
ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd800946b510,ffff80002a816e78,ffff80002a816ea8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a816e48) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566
namei(ffff80002a816e48) at namei+0x7ca sys/kern/vfs_lookup.c:250
ptm_vn_open(ffff80002a816e48) at ptm_vn_open+0x40 sys/kern/tty_pty.c:1014
ptmioctl(5100,40287401,ffff80002a817160,3,ffff800038d1c2c0) at ptmioctl+0x89d sys/kern/tty_pty.c:1179
VOP_IOCTL(fffffd806f2c5518,40287401,ffff80002a817160,3,fffffd8007bfd5b0,ffff800038d1c2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8068005ea0,40287401,ffff80002a817160,ffff800038d1c2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800038d1c2c0,ffff80002a817330,ffff80002a817280) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80002a817330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a817330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87f67ec10, count: -14
---
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