kernel: protection fault trap, code=0
Stopped at lf_advlock+0x228: incl 0x28(%r12)
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
lf_advlock(ffff800000dd7960,0,fffffd8008be77c8,2,ffff80002a384f70,40) at lf_advlock+0x228 ls_ref sys/kern/vfs_lockf.c:138 [inline]
lf_advlock(ffff800000dd7960,0,fffffd8008be77c8,2,ffff80002a384f70,40) at lf_advlock+0x228 sys/kern/vfs_lockf.c:278
VOP_ADVLOCK(fffffd8067600048,fffffd8008be77c8,2,ffff80002a384f70,40) at VOP_ADVLOCK+0x75 sys/kern/vfs_vops.c:612
closef(fffffd8067c4b3a8,ffff80002a1fc7d0) at closef+0xe9
fdfree(ffff80002a1fc7d0) at fdfree+0xe4 sys/kern/kern_descrip.c:1190
exit1(ffff80002a1fc7d0,0,0,1) at exit1+0x38a sys/kern/kern_exit.c:199
sys_exit(ffff80002a1fc7d0,ffff80002a3851c0,ffff80002a385110) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002a3851c0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a3851c0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e0eea5386d0, count: -8
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a384ec0
rbx 0
rdx 0xa
rcx 0x9
rax 0
r8 0
r9 0x1
r10 0xeefed8493f2fe2fa
r11 0xd919fbb671be48ac
r12 0xdeaf4152deaf4152
r13 0x2
r14 0xffff800000dd7960
r15 0xffffffffffffffff
rip 0xffffffff82036388 lf_advlock+0x228
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a384e30
ss 0x10
lf_advlock+0x228: incl 0x28(%r12)
ddb{1}> show proc
PROC (syz-executor.6) tid=390366 pid=82862 tcnt=1 stat=onproc
flags process=8001008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=83, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80002a1fc7d0
forw=0xffffffffffffffff, list=0xffff80002a2e4028,0xffff80002a2e42c8
process=0xffff80002a296c78 user=0xffff80002a380000, vmspace=0xfffffd8067750540
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
26260 60885 27324 0 3 0x8000082 nanoslp syz-executor.7
16436 440126 27324 0 3 0x8000082 nanoslp syz-executor.3
36886 14454 27324 0 3 0x8000082 nanoslp syz-executor.2
48777 436215 27324 0 3 0x8000002 biowait syz-executor.5
13081 110897 27324 0 3 0x8000082 nanoslp syz-executor.4
58180 40732 27324 0 7 0x8000002 syz-executor.1
12932 265988 27324 0 3 0x8000082 nanoslp syz-executor.6
52183 88759 27324 0 2 0x8000482 syz-executor.0
27324 330302 74480 0 3 0x1a000082 wait syz-execprog
27324 195484 74480 0 3 0x1e000082 nanoslp syz-execprog
27324 204213 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 90460 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 515398 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 202178 74480 0 3 0x1e000082 wait syz-execprog
27324 285055 74480 0 3 0x1e000082 wait syz-execprog
27324 57261 74480 0 3 0x1e000082 wait syz-execprog
27324 280045 74480 0 3 0x1e000082 wait syz-execprog
27324 293142 74480 0 3 0x1e000082 wait syz-execprog
27324 151216 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 213960 74480 0 3 0x1e000082 wait syz-execprog
27324 366851 74480 0 3 0x1e000082 wait syz-execprog
27324 400006 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 269634 74480 0 3 0x1e000082 thrsleep syz-execprog
27324 419717 74480 0 3 0x1e000082 kqread syz-execprog
74480 18435 83228 0 3 0x810008a sigsusp ksh
83228 406922 90688 0 3 0x1800009a kqread sshd
97561 50012 1 0 3 0x18100083 ttyin getty
90688 283361 1 0 3 0x18000088 kqread sshd
10540 520940 97256 73 3 0x19100090 kqread syslogd
97256 472878 1 0 3 0x18100082 sbwait syslogd
18174 472501 1 0 3 0x18100080 kqread resolvd
38665 85135 19259 77 3 0x18100092 kqread dhcpleased
79133 107953 19259 77 3 0x18100092 kqread dhcpleased
19259 459393 1 0 3 0x18000080 kqread dhcpleased
64562 396651 0 0 3 0x14200 bored smr
31902 306370 0 0 2 0x14200 zerothread
99104 253998 0 0 3 0x14200 aiodoned aiodoned
16640 42772 0 0 3 0x14200 syncer update
20205 282670 0 0 3 0x14200 cleaner cleaner
28324 502266 0 0 3 0x14200 reaper reaper
56506 302340 0 0 3 0x14200 pgdaemon pagedaemon
90743 442368 0 0 3 0x14200 bored viomb
41629 255791 0 0 3 0x40014200 acpi0 acpi0
51448 298965 0 0 3 0x40014200 idle1
56170 129564 0 0 3 0x14200 bored softnet3
88640 415550 0 0 3 0x14200 bored softnet2
53710 407433 0 0 3 0x14200 bored softnet1
46185 137502 0 0 3 0x14200 bored softnet0
53076 206285 0 0 3 0x14200 bored systqmp
89504 128835 0 0 3 0x14200 bored systq
99350 220600 0 0 3 0x14200 tmoslp softclockmp
19457 491810 0 0 3 0x40014200 tmoslp softclock
9130 96516 0 0 3 0x40014200 idle0
1 416372 0 0 3 0x8000082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 48777 (syz-executor.5) thread 0xffff80002a1fc020 (436215)
exclusive rrwlock inode r = 0 (0xfffffd8068aa21b8)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 rw_enter+0x32d sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x85 sys/kern/vfs_vnops.c:564
#5 vget+0x1fd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x1373 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6f8 sys/kern/vfs_lookup.c:566
#11 namei+0x56a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855
#13 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
#13 syscall+0x854 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8066e644e0)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 rw_enter+0x32d sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x85 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418
#6 namei+0x56a sys/kern/vfs_lookup.c:250
#7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855
#8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
#8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10194 6414K 6420K 166960K 79858 0
pcb 17 12K 12K 166960K 17 0
rtable 234 6K 6K 166960K 347 0
pf 29 8K 10K 166960K 40 0
ifaddr 44 15K 15K 166960K 46 0
ifgroup 50 2K 2K 166960K 50 0
counters 64 36K 36K 166960K 64 0
ioctlops 0 0K 4K 166960K 1481 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1268 80K 80K 166960K 69878 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 1K 166960K 2 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 13 45K 93K 166960K 68727 0
proc 55 78K 103K 166960K 480 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 127 572K 572K 166960K 127 0
exec 0 0K 1K 166960K 370 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 274 77K 79K 166960K 565458 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 33 66K 100K 166960K 69868 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 11 0K 2K 166960K 27 0
temp 1 6804K 6868K 166960K 209787 0
kqueue 12 18K 18K 166960K 25 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 68628 0 68623 1 0 1 1 0 8 0
rtentry 112 111 0 1 4 0 4 4 0 8 0
unpcb 144 137223 0 137210 19 18 1 2 0 8 0
syncache 336 5 0 5 2 2 0 1 0 8 0
tcpqe 32 18 0 18 1 1 0 1 0 8 0
tcpcb 808 8 0 5 1 0 1 1 0 8 0
arp 120 18 0 0 1 0 1 1 0 8 0
inpcb 384 62 0 56 1 0 1 1 0 8 0
nd6 136 24 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 27 0 26 2 1 1 1 0 8 0
pfstkey 128 27 0 26 2 1 1 1 0 8 0
pfstate 376 27 0 26 3 2 1 2 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 453 0 0 29 0 29 29 0 8 0
art_table 32 454 0 0 4 0 4 4 0 8 0
art_node 16 110 0 10 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 70166 0 68645 96 0 96 96 0 8 0
ffsino 272 70166 0 68645 102 0 102 102 0 8 0
nchpl 144 139020 0 137249 67 1 66 66 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 1309571 0 1309571 3 2 1 2 0 8 1
percpumem 16 46 0 0 1 0 1 1 0 8 0
kstatmem 264 22 0 0 2 0 2 2 0 8 0
scxspl 216 419037 0 419036 11 10 1 8 1 8 0
plimitpl 152 68629 0 68607 1 0 1 1 0 8 0
sigapl 424 69032 0 68986 7 1 6 7 0 8 0
futexpl 64 1049617 0 1049617 1 0 1 1 0 8 1
knotepl 120 118 0 0 4 0 4 4 0 8 0
kqueuepl 216 68616 0 68608 1 0 1 1 0 8 0
pipepl 320 142 0 114 4 1 3 3 0 8 0
fdescpl 496 69014 0 68990 6 2 4 5 0 8 0
filepl 152 1099175 0 1099028 20 13 7 8 0 8 0
lockfpl 104 274290 0 274282 1 0 1 1 0 8 0
lockfspl 48 68586 0 68581 1 0 1 1 0 8 0
sessionpl 144 25 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 9 1 0 1 1 0 8 0
ucredpl 104 617421 0 617411 1 0 1 1 0 8 0
zombiepl 144 68993 0 68986 2 1 1 1 0 8 0
processpl 1136 69032 0 68986 4 0 4 4 0 8 0
procpl 656 138184 0 138123 16 9 7 7 0 8 1
srpgc 96 1 0 1 1 1 0 1 0 8 0
sockpl 664 205913 0 205889 7 4 3 4 0 8 0
mcl8k 8192 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 341 0 0 42 1 41 42 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 444 0 0 23 0 23 23 0 8 0
bufpl 280 72989 0 66734 447 0 447 447 0 8 0
anonpl 24 4004132 0 3997576 82 40 42 64 0 186 0
amapchunkpl 152 1777359 0 1776752 47 18 29 30 0 158 1
amappl16 200 73948 0 73817 13 5 8 8 0 8 0
amappl15 192 12 0 12 1 1 0 1 0 8 0
amappl14 184 163 0 151 2 1 1 2 0 8 0
amappl13 176 6 0 6 1 1 0 1 0 8 0
amappl12 168 69693 0 69666 2 0 2 2 0 8 0
amappl11 160 104 0 93 1 0 1 1 0 8 0
amappl10 152 65 0 55 2 1 1 1 0 8 0
amappl9 144 178 0 177 1 0 1 1 0 8 0
amappl8 136 196 0 128 3 0 3 3 0 8 0
amappl7 128 55 0 44 1 0 1 1 0 8 0
amappl6 120 332 0 317 2 1 1 2 0 8 0
amappl5 112 171 0 159 1 0 1 1 0 8 0
amappl4 104 569 0 536 2 0 2 2 0 8 0
amappl3 96 358128 0 358063 3 0 3 3 0 8 0
amappl2 88 69414 0 69349 4 2 2 4 0 8 0
amappl1 80 216408 0 215926 27 16 11 22 0 8 0
amappl 88 564883 0 564718 5 0 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 69014 0 68990 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 69014 0 68990 1 0 1 1 0 8 0
vmmpekpl 168 340537 0 340505 2 0 2 2 0 8 0
vmmpepl 168 2916371 0 2914739 138 57 81 117 0 357 2
vmsppl 440 69013 0 68990 4 0 4 4 0 8 0
rwobjpl 56 669231 0 662255 100 1 99 99 0 8 0
pdppl 4096 138035 0 137980 215 150 65 79 0 8 10
pvpl 32 51128 0 0 407 1 406 406 0 265 0
pmappl 248 69013 0 68990 4 2 2 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 522 0 157 11 0 11 11 0 8 0
ddb{1}>