witness: lock order reversal:
1st 0xffffffff828fc2c0 pf_lock (pf_lock)
2nd 0xffffffff82952300 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+0x3fbc sys/net/pf_ioctl.c:2968
#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(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d6e23d0,ffff8000211cdae8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f68dc68,c0104453,ffff8000211ce290,2,fffffd807f7d8660,ffff800021143268) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc54e0, count: -16
ddb{0}> show registers
rdi 0x3
rsi 0xffffffff82900ce0 __sancov_gen_cov_switch_values.134
rbp 0xffff8000211cd8b0
rbx 0x3
rdx 0x3fd
rcx 0
rax 0x1
r8 0xffff8000211cd820
r9 0x8080808080808080
r10 0xa17ceec1c30d82e7
r11 0x5e462530aaa0c827
r12 0xffffffff82aa07e0 w_lodata+0x528b0
r13 0
r14 0xffffffff82a9ca00 w_lodata+0x4ead0
r15 0xfffffd8002f6a780
rip 0xffffffff81d38498 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211cd8a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor3576298726) pid=113883 stat=onproc
flags process=2<EXEC> proc=0
pri=17, usrpri=56, nice=20
forw=0xffffffffffffffff, list=0xffff800021142008,0xffffffff82a01350
process=0xffff8000211a1900 user=0xffff8000211c9000, vmspace=0xfffffd806ee9bcf8
estcpu=6, cpticks=1, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*53731 113883 26800 0 7 0x2 syz-executor3576298726
26800 477428 2271 0 3 0x10008a sigsusp ksh
2271 431499 17313 0 3 0x9a kqread sshd
91497 516967 1 0 3 0x100083 ttyin getty
17313 258976 1 0 3 0x88 kqread sshd
14297 228898 5248 74 3 0x1100092 bpf pflogd
5248 59361 1 0 3 0x80 netio pflogd
54122 283421 29003 73 3 0x1100090 kqread syslogd
29003 43524 1 0 3 0x100082 netio syslogd
86658 244989 1 0 3 0x100080 kqread resolvd
81675 125718 45098 77 3 0x100092 kqread dhcpleased
96606 154059 45098 77 3 0x100092 kqread dhcpleased
45098 97401 1 0 3 0x80 kqread dhcpleased
78185 52793 0 0 3 0x14200 bored smr
11271 61952 0 0 3 0x14200 pgzero zerothread
85211 414023 0 0 3 0x14200 aiodoned aiodoned
4500 230863 0 0 3 0x14200 syncer update
35606 452893 0 0 3 0x14200 cleaner cleaner
15856 335078 0 0 3 0x14200 reaper reaper
87349 444540 0 0 3 0x14200 pgdaemon pagedaemon
46865 23601 0 0 3 0x14200 bored viomb
60063 366820 0 0 3 0x40014200 acpi0 acpi0
68680 377295 0 0 7 0x40014200 idle1
41648 97981 0 0 3 0x14200 bored softnet
3908 47991 0 0 3 0x14200 bored systqmp
98358 94506 0 0 3 0x14200 bored systq
60946 124142 0 0 3 0x40014200 bored softclock
55466 416362 0 0 3 0x40014200 idle0
1 311488 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 53731 (syz-executor3576298726) thread 0xffff800021143268 (113883)
exclusive rwlock pf_lock r = 0 (0xffffffff828fc2c0)
#0 witness_lock+0x44d
#1 pfioctl+0x4397
#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 rwlock pfioctl_rw r = 0 (0xffffffff828fc320)
#0 witness_lock+0x44d
#1 pfioctl+0x15e sys/net/pf_ioctl.c:1148
#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 (0xffffffff82aeb288)
#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
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 58 3K 5K 78643K 1550 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 25 4709K 4769K 78643K 2508 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 312 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 97 0 0 7 0 7 7 0 8 0
art_table 32 98 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 1426 0 39 87 0 87 87 0 8 0
ffsino 272 1426 0 39 93 0 93 93 0 8 0
nchpl 144 1614 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1436 0 0 30 0 30 30 0 8 0
vnodes 224 1436 0 0 85 0 85 85 0 8 0
namei 1024 4474 0 4474 1 0 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 216 3787 0 3787 2 1 1 2 0 8 1
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 43 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 1184 0 1124 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 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 57 0 0 8 0 8 8 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 105 0 0 7 0 7 7 0 8 0
bufpl 288 2011 0 92 138 0 138 138 0 8 0
anonpl 24 38815 0 36828 15 1 14 15 0 186 2
amapchunkpl 152 2829 0 2734 6 2 4 6 0 158 0
amappl16 200 98 0 93 1 0 1 1 0 8 0
amappl13 176 34 0 33 1 0 1 1 0 8 0
amappl12 168 3 0 3 1 0 1 1 0 8 1
amappl11 160 66 0 49 1 0 1 1 0 8 0
amappl10 152 3 0 1 1 0 1 1 0 8 0
amappl9 144 485 0 483 1 0 1 1 0 8 0
amappl8 136 364 0 363 1 0 1 1 0 8 0
amappl7 128 52 0 49 1 0 1 1 0 8 0
amappl6 120 105 0 95 1 0 1 1 0 8 0
amappl5 112 92 0 79 1 0 1 1 0 8 0
amappl4 104 627 0 606 1 0 1 1 0 8 0
amappl3 96 406 0 383 1 0 1 1 0 8 0
amappl2 88 454 0 416 1 0 1 1 0 8 0
amappl1 80 9522 0 9115 10 0 10 10 0 8 1
amappl 88 1268 0 1229 2 1 1 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 6254 0 6238 1 0 1 1 0 8 0
vmmpepl 168 27076 0 26218 43 1 42 42 0 357 3
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9788 0 7781 30 0 30 30 0 8 0
pdppl 4096 619 0 582 45 8 37 43 0 8 0
pvpl 32 131152 0 127209 35 0 35 35 0 265 0
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 112 402 0 11 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(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d6e23d0,ffff8000211cdae8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f68dc68,c0104453,ffff8000211ce290,2,fffffd807f7d8660,ffff800021143268) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc54e0, 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}>