uvm_fault(0xfffffd807f0082e0, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at witness_checkorder+0x44c: movl 0x10(%r12),%ecx
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f0082e0, 0x10, 0, 1) -> e
witness_checkorder(ffffffff8251a428,9,0) at witness_checkorder+0x44c witness_lock_order_check sys/kern/subr_witness.c:2442 [inline]
witness_checkorder(ffffffff8251a428,9,0) at witness_checkorder+0x44c sys/kern/subr_witness.c:872
end trace frame: 0xffff800023b73a10, count: 0
ddb{0}> trace
witness_checkorder(ffffffff8251a428,9,0) at witness_checkorder+0x44c witness_lock_order_check sys/kern/subr_witness.c:2442 [inline]
witness_checkorder(ffffffff8251a428,9,0) at witness_checkorder+0x44c sys/kern/subr_witness.c:872
rw_enter_write(ffffffff8251a418) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:125
sosplice(fffffd806184b930,ffffffff,0,0) at sosplice+0x5f sys/kern/uipc_socket.c:1128
sosetopt(fffffd806184b930,ffff,1023,0) at sosetopt+0x7f4
sys_setsockopt(ffff800020ab0ee8,ffff800023b73ba8,ffff800023b73bf0) at sys_setsockopt+0x216 sys/kern/uipc_syscalls.c:970
syscall(ffff800023b73c70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023b73c70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe12f72f85c0, count: -7
ddb{0}> show registers
rdi 0xffffffff81b20b27 witness_checkorder+0x3a7
rsi 0x11dc __ALIGN_SIZE+0x1dc
rbp 0xffff800023b739e0
rbx 0xffffffff
rdx 0x11dd __ALIGN_SIZE+0x1dd
rcx 0xc
rax 0xfffffd80029f8000
r8 0xffffffff8101132f kprintf+0x16f
r9 0x1
r10 0xffff800023b737c0
r11 0xae7dbb07599919d0
r12 0
r13 0
r14 0xfffffd80029d0300
r15 0xffffffff825a1238 w_locklistdata+0x42688
rip 0xffffffff81b20bcc witness_checkorder+0x44c
cs 0x8
rflags 0x10286 __ALIGN_SIZE+0xf286
rsp 0xffff800023b73940
ss 0x10
witness_checkorder+0x44c: movl 0x10(%r12),%ecx
ddb{0}> show proc
PROC (syz-executor.1) pid=68733 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab0290,0xffff800020ab0a08
process=0xffff800020adc380 user=0xffff800023b6e000, vmspace=0xfffffd807f0082e0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
34118 23406 93168 0 2 0 syz-executor.0
21825 208677 61006 0 2 0 syz-executor.1
*21825 68733 61006 0 7 0x4000000 syz-executor.1
51740 461422 1 0 3 0x100083 ttyin getty
93168 364231 23514 0 2 0x2 syz-executor.0
61006 27047 23514 0 7 0x482 syz-executor.1
23514 273428 88564 0 3 0x82 thrsleep syz-fuzzer
23514 296016 88564 0 3 0x4000082 nanosleep syz-fuzzer
23514 491214 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 454268 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 131402 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 171501 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 13969 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 303577 88564 0 3 0x4000082 thrsleep syz-fuzzer
23514 488486 88564 0 3 0x4000082 nanosleep syz-fuzzer
23514 31624 88564 0 3 0x4000082 kqread syz-fuzzer
88564 328618 96688 0 3 0x10008a pause ksh
96688 42588 18300 0 3 0x92 select sshd
18300 313486 1 0 3 0x80 select sshd
30230 101051 53096 74 3 0x100092 bpf pflogd
53096 349732 1 0 3 0x80 netio pflogd
78030 405580 87555 73 3 0x100090 kqread syslogd
87555 90798 1 0 3 0x100082 netio syslogd
97520 386115 1 77 3 0x100090 poll dhclient
72398 216646 1 0 3 0x80 poll dhclient
54107 6756 0 0 2 0x14200 zerothread
22105 441933 0 0 3 0x14200 aiodoned aiodoned
56659 420582 0 0 3 0x14200 syncer update
39534 498381 0 0 3 0x14200 cleaner cleaner
67332 97073 0 0 3 0x14200 reaper reaper
63407 327125 0 0 3 0x14200 pgdaemon pagedaemon
55849 448357 0 0 3 0x14200 bored crynlk
23403 431572 0 0 3 0x14200 bored crypto
48813 502732 0 0 3 0x40014200 acpi0 acpi0
62370 325980 0 0 3 0x40014200 idle1
15887 430637 0 0 3 0x14200 bored softnet
28572 128918 0 0 3 0x14200 bored systqmp
89596 21098 0 0 3 0x14200 bored systq
59420 130057 0 0 3 0x40014200 bored softclock
46848 267543 0 0 3 0x40014200 idle0
41481 366466 0 0 3 0x14200 bored smr
1 231952 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 21825 (syz-executor.1) thread 0xffff800020ab0ee8 (68733)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9496 6414K 7368K 78643K 11540 0 0
pcb 13 8K 8K 78643K 267 0 0
rtable 95 4K 4K 78643K 1159 0 0
ifaddr 55 11K 11K 78643K 94 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1488 0 0
iov 0 0K 16K 78643K 1005 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1225 77K 77K 78643K 3285 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 19 0 0
VM map 4 2K 2K 78643K 4 0 0
sem 12 1K 1K 78643K 12 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1809 196K 290K 78643K 12766 0 0
file desc 6 17K 25K 78643K 3811 0 0
sigio 0 0K 0K 78643K 1630 0 0
proc 61 75K 95K 78643K 6778 0 0
subproc 32 2K 2K 78643K 68 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 6 0 0
in_multi 23 1K 2K 78643K 62 0 0
ether_multi 1 0K 0K 78643K 1 0 0
mrt 0 0K 0K 78643K 90 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 54 238K 238K 78643K 54 0 0
exec 0 0K 1K 78643K 2163 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 123 39K 39K 78643K 10403 0 0
UVM aobj 43 2K 2K 78643K 43 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 23 0 0
NDP 9 0K 0K 78643K 23 0 0
temp 123 3554K 3650K 78643K 12545 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 17 0 13 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 50 0 48 1 0 1 1 0 8 0
rtentry 112 355 0 319 2 0 2 2 0 8 0
unpcb 120 4801 0 4790 3 2 1 2 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpqe 32 19 0 19 2 2 0 1 0 8 0
tcpcb 544 80 0 74 1 0 1 1 0 8 0
inpcb 280 3306 0 3297 9 6 3 3 0 8 2
nd6 48 10 0 8 1 0 1 1 0 8 0
ppxss 1128 1 0 1 1 1 0 1 0 8 0
pffrag 232 3 0 3 2 2 0 1 0 482 0
pffrnode 88 3 0 3 2 2 0 1 0 8 0
pffrent 40 49 0 49 2 2 0 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 1062 0 284 6 0 6 6 0 8 0
pfstkey 112 1062 0 284 25 0 25 25 0 8 0
pfstate 328 1062 0 284 73 0 73 73 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 136 0 134 3 0 3 3 0 8 1
art_heap4 256 1175 0 995 15 2 13 14 0 8 0
art_table 32 1311 0 1129 2 0 2 2 0 8 0
art_node 16 354 0 321 1 0 1 1 0 8 0
sysvmsgpl 40 5 0 0 1 0 1 1 0 8 0
semupl 112 10 0 10 1 1 0 1 0 8 0
semapl 112 10 0 0 1 0 1 1 0 8 0
shmpl 112 41 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 8682 0 7279 46 0 46 46 0 8 0
ffsino 272 8682 0 7279 94 0 94 94 0 8 0
nchpl 144 13663 0 12062 60 0 60 60 0 8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0
vnodes 208 5926 0 0 312 0 312 312 0 8 0
namei 1024 51319 0 51319 1 0 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
vcpupl 1984 2 0 0 1 0 1 1 0 8 0
vmpool 552 2 0 0 1 0 1 1 0 8 0
scxspl 192 34754 0 34754 8 7 1 7 0 8 1
plimitpl 152 300 0 292 1 0 1 1 0 8 0
sigapl 432 4005 0 3989 3 1 2 3 0 8 0
futexpl 56 91344 0 91344 1 0 1 1 0 8 1
knotepl 112 506 0 487 1 0 1 1 0 8 0
kqueuepl 104 810 0 808 1 0 1 1 0 8 0
pipepl 160 4292 0 4273 5 4 1 2 0 8 0
fdescpl 488 4006 0 3989 3 0 3 3 0 8 0
filepl 152 40109 0 40008 13 7 6 8 0 8 1
lockfpl 104 178 0 177 1 0 1 1 0 8 0
lockfspl 48 79 0 78 1 0 1 1 0 8 0
sessionpl 112 22 0 11 1 0 1 1 0 8 0
pgrppl 48 30 0 19 1 0 1 1 0 8 0
ucredpl 96 955 0 946 1 0 1 1 0 8 0
zombiepl 144 3989 0 3989 1 0 1 1 0 8 1
processpl 896 4021 0 3989 4 0 4 4 0 8 0
procpl 632 9535 0 9493 6 1 5 5 0 8 1
srpgc 64 4 0 4 2 2 0 1 0 8 0
sockpl 384 8170 0 8148 16 10 6 9 0 8 3
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 14 0 0 2 0 2 2 0 8 0
mcl12k 12288 13 0 0 2 0 2 2 0 8 0
mcl9k 9216 4 0 0 1 0 1 1 0 8 0
mcl8k 8192 17 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 166 0 0 20 0 20 20 0 8 0
mtagpl 80 43 0 0 1 0 1 1 0 8 0
mbufpl 256 266 0 0 16 0 16 16 0 8 0
bufpl 256 10211 0 3153 442 0 442 442 0 8 0
anonpl 16 280383 0 259503 88 3 85 86 0 124 0
amapchunkpl 152 16202 0 16044 8 1 7 8 0 158 0
amappl16 192 15827 0 14682 59 1 58 59 0 8 0
amappl15 184 1 0 1 1 1 0 1 0 8 0
amappl14 176 1605 0 1597 1 0 1 1 0 8 0
amappl13 168 332 0 332 2 2 0 1 0 8 0
amappl12 160 7 0 7 1 1 0 1 0 8 0
amappl11 152 69 0 53 1 0 1 1 0 8 0
amappl10 144 18 0 12 1 0 1 1 0 8 0
amappl9 136 2522 0 2518 1 0 1 1 0 8 0
amappl8 128 2104 0 2065 2 0 2 2 0 8 0
amappl7 120 47 0 41 1 0 1 1 0 8 0
amappl6 112 65 0 53 1 0 1 1 0 8 0
amappl5 104 1701 0 1686 1 0 1 1 0 8 0
amappl4 96 2882 0 2851 1 0 1 1 0 8 0
amappl3 88 3182 0 3173 1 0 1 1 0 8 0
amappl2 80 31682 0 31609 3 1 2 3 0 8 0
amappl1 72 82754 0 82320 25 15 10 20 0 8 0
amappl 80 9819 0 9771 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 64 42 0 0 1 0 1 1 0 8 0
uaddrrnd 24 4008 0 3989 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 4008 0 3989 1 0 1 1 0 8 0
vmmpekpl 168 32253 0 32222 3 1 2 2 0 8 0
vmmpepl 168 465906 0 463535 177 71 106 145 0 357 2
vmsppl 368 4005 0 3989 2 0 2 2 0 8 0
pdppl 4096 8023 0 7980 6 0 6 6 0 8 0
pvpl 32 812188 0 788001 214 13 201 203 0 265 5
pmappl 232 4007 0 3989 3 1 2 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 618 0 5 18 0 18 18 0 8 0