login: witness: lock order reversal:
1st 0xffffffff82981660 pf_lock (pf_lock)
2nd 0xffffffff8291bdd0 netlock (netlock)
lock order "netlock"(rwlock) -> "pf_lock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 pfioctl+0x3fba sys/net/pf_ioctl.c:2966
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
lock order "pf_lock"(rwlock) -> "netlock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
#2 uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
#3 uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
#4 uvm_fault+0x248
#5 kpageflttrap+0x209
#6 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#7 alltraps_kern_meltdown+0x7b
#8 copyin+0x53
#9 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#10 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#11 sys_ioctl+0x4a2
#12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#13 Xsyscall+0x128
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff8291bdd0,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff8291bdd0,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff8291bdc0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d66d790,ffff8000211cd938,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd806d66d790,1000,ffff8000211cd9f8,ffff8000211cd9c8,0,1,71fb8b939eed8b75,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdb60,ffff8000211cdb98,ffff8000211cdae0,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806f1efe68,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdcf0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdcf0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f8159c8,c0104451,ffff8000211ce0d0,2,fffffd807f7d8960,ffff8000ffff6a90) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806e51a860,c0104451,ffff8000211ce0d0,ffff8000ffff6a90) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff6a90,ffff8000211ce1e8,ffff8000211ce240) at sys_ioctl+0x4a2
syscall(ffff8000211ce2b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce2b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbec30, count: -16
ddb{0}> show registers
rdi 0x3
rsi 0xffffffff8294d790 __sancov_gen_cov_switch_values.134
rbp 0xffff8000211cd700
rbx 0x3
rdx 0x3fd
rcx 0
rax 0x1
r8 0xffff8000211cd670
r9 0x8080808080808080
r10 0x38bdf05f4bfbb50
r11 0x17ac1df0a447fe87
r12 0xffffffff82adbf70 w_lodata+0x52800
r13 0
r14 0xffffffff82ad89d0 w_lodata+0x4f260
r15 0xfffffd8002f60780
rip 0xffffffff81395b28 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211cd6f0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor3073947665) pid=134615 stat=onproc
flags process=2<EXEC> proc=0
pri=17, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff62b0,0xffffffff82af99a8
process=0xffff8000211a0010 user=0xffff8000211c9000, vmspace=0xfffffd806f1efe68
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*64312 134615 31587 0 7 0x2 syz-executor3073947665
31587 289449 44521 0 3 0x10008a sigsusp ksh
44521 297979 22700 0 3 0x9a kqread sshd
17075 25490 1 0 3 0x100083 ttyin getty
22700 175702 1 0 3 0x88 kqread sshd
14436 278851 62179 74 3 0x1100092 bpf pflogd
62179 369652 1 0 3 0x80 netio pflogd
78047 417736 38822 73 3 0x1100090 kqread syslogd
38822 174128 1 0 3 0x100082 netio syslogd
71221 218432 1 0 3 0x100080 kqread resolvd
84822 272576 73574 77 3 0x100092 kqread dhcpleased
6677 237660 73574 77 3 0x100092 kqread dhcpleased
73574 344477 1 0 3 0x80 kqread dhcpleased
68020 305756 0 0 3 0x14200 bored smr
34372 179053 0 0 3 0x14200 pgzero zerothread
32195 425231 0 0 3 0x14200 aiodoned aiodoned
14149 376999 0 0 3 0x14200 syncer update
72890 77747 0 0 3 0x14200 cleaner cleaner
43277 383154 0 0 3 0x14200 reaper reaper
37625 457917 0 0 3 0x14200 pgdaemon pagedaemon
86144 197469 0 0 3 0x14200 bored viomb
38268 469731 0 0 3 0x40014200 acpi0 acpi0
97997 267316 0 0 7 0x40014200 idle1
38004 330148 0 0 3 0x14200 bored softnet
61483 190397 0 0 3 0x14200 bored systqmp
59157 92360 0 0 3 0x14200 bored systq
48065 42089 0 0 3 0x40014200 bored softclock
78209 39519 0 0 3 0x40014200 idle0
1 152114 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 64312 (syz-executor3073947665) thread 0xffff8000ffff6a90 (134615)
exclusive rwlock pf_lock r = 0 (0xffffffff82981660)
#0 witness_lock+0x44d
#1 pfioctl+0x413b sys/net/pf_ioctl.c:2476
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a17948)
#0 witness_lock+0x44d
#1 vn_ioctl+0x41 sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x4a2
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10149 6454K 6455K 78643K 11239 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 112 0
ifaddr 29 8K 8K 78643K 32 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 4K 78643K 1479 0
iov 0 0K 0K 78643K 1 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1167 73K 73K 78643K 1180 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 1 0K 0K 78643K 1 0
proc 67 87K 87K 78643K 282 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 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
exec 0 0K 2K 78643K 432 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 82 3K 5K 78643K 2179 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 4 0K 0K 78643K 4 0
temp 26 4698K 4757K 78643K 3281 0
kqueue 11 16K 18K 78643K 24 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 17 0 14 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 35 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 1 0 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 2 0 0 1 0 1 1 0 8 0
inpcb 304 32 0 26 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 9 0 0 1 0 1 1 0 8 0
pfstkey 112 9 0 0 1 0 1 1 0 8 0
pfstate 320 9 0 0 1 0 1 1 0 8 0
pfrule 1360 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 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1425 0 39 87 0 87 87 0 8 0
ffsino 272 1425 0 39 93 0 93 93 0 8 0
nchpl 144 1600 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1435 0 0 30 0 30 30 0 8 0
vnodes 224 1435 0 0 85 0 85 85 0 8 0
namei 1024 4425 0 4425 1 0 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 216 3824 0 3822 2 1 1 2 0 8 0
plimitpl 152 16 0 9 1 0 1 1 0 8 0
sigapl 424 320 0 291 4 0 4 4 0 8 0
knotepl 120 52 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 86 0 83 1 0 1 1 0 8 0
fdescpl 496 306 0 291 3 0 3 3 0 8 0
filepl 152 1148 0 1087 3 0 3 3 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 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 69 0 57 1 0 1 1 0 8 0
zombiepl 144 291 0 291 1 0 1 1 0 8 1
processpl 1064 320 0 291 3 0 3 3 0 8 0
procpl 672 320 0 291 3 0 3 3 0 8 0
sockpl 480 84 0 60 4 0 4 4 0 8 0
mcl8k 8192 3 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 256 105 0 0 7 0 7 7 0 8 0
bufpl 288 2024 0 93 138 0 138 138 0 8 0
anonpl 24 41240 0 38925 17 2 15 17 0 186 1
amapchunkpl 152 3965 0 3822 7 1 6 7 0 158 0
amappl16 200 34 0 33 2 1 1 1 0 8 0
amappl15 192 67 0 64 1 0 1 1 0 8 0
amappl13 176 34 0 33 1 0 1 1 0 8 0
amappl12 168 19 0 18 1 0 1 1 0 8 0
amappl11 160 49 0 35 1 0 1 1 0 8 0
amappl10 152 2 0 0 1 0 1 1 0 8 0
amappl9 144 442 0 439 1 0 1 1 0 8 0
amappl8 136 370 0 367 1 0 1 1 0 8 0
amappl7 128 65 0 62 1 0 1 1 0 8 0
amappl6 120 116 0 103 1 0 1 1 0 8 0
amappl5 112 189 0 175 1 0 1 1 0 8 0
amappl4 104 642 0 622 1 0 1 1 0 8 0
amappl3 96 121 0 112 1 0 1 1 0 8 0
amappl2 88 369 0 331 1 0 1 1 0 8 0
amappl1 80 8804 0 8423 9 0 9 9 0 8 0
amappl 88 1898 0 1834 2 0 2 2 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 306 0 291 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 306 0 291 1 0 1 1 0 8 0
vmmpekpl 168 6250 0 6235 1 0 1 1 0 8 0
vmmpepl 168 26576 0 25733 41 0 41 41 0 357 3
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9581 0 7588 29 0 29 29 0 8 0
pdppl 4096 619 0 582 51 14 37 45 0 8 0
pvpl 32 134486 0 130337 37 0 37 37 0 265 2
pmappl 248 305 0 291 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 406 0 17 12 0 12 12 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
witness_checkorder(ffffffff8291bdd0,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff8291bdd0,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff8291bdc0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d66d790,ffff8000211cd938,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd806d66d790,1000,ffff8000211cd9f8,ffff8000211cd9c8,0,1,71fb8b939eed8b75,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdb60,ffff8000211cdb98,ffff8000211cdae0,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806f1efe68,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdcf0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdcf0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f8159c8,c0104451,ffff8000211ce0d0,2,fffffd807f7d8960,ffff8000ffff6a90) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806e51a860,c0104451,ffff8000211ce0d0,ffff8000ffff6a90) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff6a90,ffff8000211ce1e8,ffff8000211ce240) at sys_ioctl+0x4a2
syscall(ffff8000211ce2b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce2b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbec30, count: -16
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff800020ce8ff0) 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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
ddb{1}>