witness: lock order reversal: 1st 0xffffffff8299f480 pf_lock (pf_lock) 2nd 0xffffffff82928d20 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:2976 #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 copyout+0x53 #9 pfioctl+0x4519 sys/net/pf_ioctl.c:2944 #10 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #11 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 #12 sys_ioctl+0x4a2 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 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(ffffffff82928d20,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff82928d20,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff82928d10) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd807e8235d0,ffff80002e35cac8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd807e8235d0,1000,ffff80002e35cb88,ffff80002e35cb58,0,0,8a1785465e3b2e50,1) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e35ccf0,ffff80002e35cd28,ffff80002e35cc70,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd8067a495f0,20001000,0,2) at uvm_fault+0x248 kpageflttrap(ffff80002e35ce80,20001000) at kpageflttrap+0x209 kerntrap(ffff80002e35ce80) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 pfioctl(4900,c0284457,ffff80002e35d2f0,1,ffff80002448ca80) at pfioctl+0x4519 sys/net/pf_ioctl.c:2944 VOP_IOCTL(fffffd806fde2b88,c0284457,ffff80002e35d2f0,1,fffffd807f7d8720,ffff80002448ca80) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80682dded8,c0284457,ffff80002e35d2f0,ffff80002448ca80) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002448ca80,ffff80002e35d408,ffff80002e35d460) at sys_ioctl+0x4a2 syscall(ffff80002e35d4d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e35d4d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x983c3e7cfc0, count: -17 ddb{0}> show registers rdi 0x3 rsi 0xffffffff829acd80 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e35c890 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002448ca80 r8 0xffff80002e35c800 r9 0x8080808080808080 r10 0x1b7051a49eebef77 r11 0xc2c17a5b8f52e6d8 r12 0xffffffff82b81db0 w_lodata+0x52800 r13 0 r14 0xffffffff82b6fcf0 w_lodata+0x40740 r15 0xfffffd8002f67780 rip 0xffffffff8192f418 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e35c880 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=38951 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002448cd20,0xffff800024cd1a58 process=0xffff80002e3ec870 user=0xffff80002e358000, vmspace=0xfffffd8067a495f0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86 175465 57546 0 3 0x80 nanoslp syz-executor.2 86 147626 57546 0 3 0x4000080 fsleep syz-executor.2 3180 380431 61957 0 2 0 syz-executor.7 3180 23133 61957 0 3 0x4000080 fsleep syz-executor.7 21395 125322 21884 0 2 0 syz-executor.0 *21395 38951 21884 0 7 0x4000000 syz-executor.0 21395 437382 21884 0 3 0x4000080 fsleep syz-executor.0 87525 28782 77437 0 2 0 syz-executor.4 87525 190973 77437 0 3 0x4000080 fsleep syz-executor.4 83334 51076 73337 0 2 0 syz-executor.1 83334 314372 73337 0 3 0x4000080 fsleep syz-executor.1 77678 44601 39420 0 2 0x82000 syz-executor.3 77678 378418 39420 0 3 0x4002000 suspend syz-executor.3 73337 462379 61794 0 3 0x82 nanoslp syz-executor.1 57546 108902 61794 0 3 0x82 nanoslp syz-executor.2 88401 427496 0 0 3 0x14200 acct acct 39420 479750 61794 0 3 0x82 nanoslp syz-executor.3 61957 494692 61794 0 3 0x82 nanoslp syz-executor.7 6093 501728 61794 0 3 0x2 biowait syz-executor.5 77437 372675 61794 0 3 0x82 nanoslp syz-executor.4 71183 200982 61794 0 3 0x82 piperd syz-executor.6 21884 232179 61794 0 3 0x82 nanoslp syz-executor.0 64532 132346 1 0 3 0x100083 ttyin getty 13125 519277 0 0 3 0x14200 bored sosplice 61794 108698 82416 0 3 0x82 kqread syz-fuzzer 61794 178010 82416 0 3 0x4000082 nanoslp syz-fuzzer 61794 469233 82416 0 3 0x4000082 thrsleep syz-fuzzer 61794 436063 82416 0 3 0x4000082 thrsleep syz-fuzzer 61794 327938 82416 0 3 0x4000082 nanoslp syz-fuzzer 61794 438328 82416 0 3 0x4000082 thrsleep syz-fuzzer 61794 515230 82416 0 3 0x4000082 thrsleep syz-fuzzer 61794 282464 82416 0 3 0x4000082 thrsleep syz-fuzzer 61794 466595 82416 0 3 0x4000082 thrsleep syz-fuzzer 82416 467522 79474 0 3 0x10008a sigsusp ksh 79474 92727 86644 0 3 0x9a kqread sshd 86644 452580 1 0 3 0x88 kqread sshd 92948 291626 73047 74 3 0x1100092 bpf pflogd 73047 228158 1 0 3 0x80 netio pflogd 72753 430064 90366 73 3 0x1100090 kqread syslogd 90366 80985 1 0 3 0x100082 netio syslogd 81348 224312 1 0 3 0x100080 kqread resolvd 14150 33396 6929 77 3 0x100092 kqread dhcpleased 28253 287060 6929 77 3 0x100092 kqread dhcpleased 6929 32254 1 0 3 0x80 kqread dhcpleased 13572 191542 0 0 3 0x14200 bored smr 82074 197644 0 0 2 0x14200 zerothread 26236 11824 0 0 3 0x14200 aiodoned aiodoned 72208 519401 0 0 3 0x14200 syncer update 61005 60815 0 0 3 0x14200 cleaner cleaner 91328 194716 0 0 3 0x14200 reaper reaper 94651 51537 0 0 3 0x14200 pgdaemon pagedaemon 58311 399709 0 0 3 0x14200 bored viomb 2630 302432 0 0 3 0x40014200 acpi0 acpi0 20796 177956 0 0 7 0x40014200 idle1 78410 19503 0 0 3 0x14200 bored softnet 67235 355637 0 0 3 0x14200 bored systqmp 83418 331436 0 0 3 0x14200 bored systq 52574 425550 0 0 3 0x40014200 bored softclock 27147 232033 0 0 3 0x40014200 idle0 1 326812 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 21395 (syz-executor.0) thread 0xffff80002448ca80 (38951) exclusive rwlock pf_lock r = 0 (0xffffffff8299f480) #0 witness_lock+0x44d #1 pfioctl+0x4507 sys/net/pf_ioctl.c:2943 #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 shared rwlock pfioctl_rw r = 0 (0xffffffff8299f4e0) #0 witness_lock+0x44d #1 pfioctl+0x946 sys/net/pf_ioctl.c:1149 #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 (0xffffffff82ae0fd0) #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 Process 6093 (syz-executor.5) thread 0xffff8000211ff500 (501728) exclusive rrwlock inode r = 0 (0xfffffd80669c62c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80760d41b8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 6511K 10792K 78643K 55256 0 pcb 13 18K 20K 78643K 2953 0 rtable 205 19K 22K 78643K 4713 0 ifaddr 88 21K 26K 78643K 1689 0 sysctl 3 1K 3K 78643K 7 0 counters 54 35K 36K 78643K 434 0 ioctlops 0 0K 4K 78643K 6376 0 iov 0 0K 32K 78643K 2427 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1506 94K 94K 78643K 14635 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 225 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1978 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 21610 0 sigio 0 0K 0K 78643K 1231 0 proc 72 87K 136K 78643K 3210 0 subproc 104 6K 7K 78643K 991 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 975 0 in_multi 66 4K 6K 78643K 1405 0 ether_multi 1 0K 0K 78643K 167 0 mrt 1 0K 0K 78643K 111 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 4341 0 pfkey data 0 0K 0K 78643K 7 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 674 1139K 1139K 78643K 270808 0 UVM aobj 131 4K 4K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1012 0 NDP 12 0K 1K 78643K 392 0 temp 136 4723K 4979K 78643K 260226 0 kqueue 12 18K 28K 78643K 1310 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 1107 0 1103 14 11 3 3 0 8 2 rtentry 112 1148 0 1070 5 1 4 4 0 8 0 unpcb 136 38455 0 38438 273 264 9 11 0 8 8 syncache 296 53 0 53 12 12 0 1 0 8 0 tcpqe 32 198 0 198 3 3 0 1 0 8 0 tcpcb 736 10215 0 10208 319 312 7 15 0 8 6 arp 120 182 0 168 1 0 1 1 0 8 0 inpcb 312 21440 0 21429 316 310 6 16 0 8 5 rttmr 72 31 0 31 10 10 0 1 0 8 0 ip6q 72 4 0 4 1 1 0 1 0 8 0 ip6af 40 216 0 216 1 1 0 1 0 8 0 nd6 48 282 0 265 1 0 1 1 0 8 0 pkpcb 40 33 0 33 9 9 0 1 0 8 0 kcovpl 48 76 0 68 1 0 1 1 0 8 0 ppxss 1248 71 0 71 18 18 0 1 0 8 0 pfstscr 40 7 0 7 2 2 0 1 0 8 0 pffrag 232 137 0 136 11 10 1 1 0 482 0 pffrnode 88 137 0 136 11 10 1 1 0 8 0 pffrent 40 373 0 372 11 10 1 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 714 21 0 21 21 0 8 0 pfrktable 1344 407 0 395 8 7 1 2 0 8 0 pftag 88 148 0 145 3 2 1 1 0 8 0 pfqueue 264 40 0 40 2 2 0 1 0 8 0 pfstitem 24 26 0 24 1 0 1 1 0 8 0 pfstkey 112 116 0 114 1 0 1 1 0 8 0 pfstate 320 70 0 68 2 1 1 2 0 8 0 pfsrctr 152 2 0 2 1 1 0 1 0 8 0 pfrule 1360 594 0 569 7 4 3 4 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 4827 0 4513 52 26 26 31 0 8 0 art_table 32 4829 0 4514 4 0 4 4 0 8 0 art_node 16 1142 0 1074 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 22 3 2 1 1 0 8 0 semapl 112 1976 0 1966 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29703 0 28204 94 0 94 94 0 8 0 ffsino 272 29703 0 28204 101 0 101 101 0 8 0 nchpl 144 57322 0 55701 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 201080 0 201079 15 14 1 2 0 8 0 percpumem 16 229 0 190 1 0 1 1 0 8 0 vcpupl 2048 267 0 2 34 0 34 34 0 8 0 vmpool 560 330 0 65 23 4 19 19 0 8 0 pfiaddrpl 120 138 0 127 4 3 1 1 0 8 0 scsiplug 72 6 0 6 2 2 0 1 0 8 0 scxspl 216 165313 0 165312 35 34 1 8 0 8 0 plimitpl 152 2134 0 2119 1 0 1 1 0 8 0 sigapl 424 21804 0 21759 8 2 6 8 0 8 0 futexpl 64 212405 0 212400 11 10 1 1 0 8 0 knotepl 120 1545 0 0 20 8 12 17 0 8 0 kqueuepl 216 4488 0 4479 86 78 8 8 0 8 7 pipepl 336 3770 0 3742 109 106 3 11 0 8 0 fdescpl 496 21766 0 21737 6 2 4 5 0 8 0 filepl 152 161404 0 161152 342 324 18 26 0 8 8 lockfpl 104 6774 0 6772 19 18 1 2 0 8 0 lockfspl 48 1994 0 1992 1 0 1 1 0 8 0 sessionpl 144 94 0 77 1 0 1 1 0 8 0 pgrppl 48 222 0 205 1 0 1 1 0 8 0 ucredpl 96 16909 0 16897 1 0 1 1 0 8 0 zombiepl 144 21759 0 21759 8 7 1 1 0 8 1 processpl 1064 21804 0 21759 5 0 5 5 0 8 0 procpl 672 59540 0 59480 40 33 7 9 0 8 0 srpgc 96 76 0 76 13 13 0 1 0 8 0 sosppl 168 122 0 122 27 27 0 1 0 8 0 sockpl 480 61062 0 61030 1474 1461 13 46 0 8 9 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 26 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 493 0 0 30 8 22 27 0 8 0 mtagpl 96 1707 0 0 19 0 19 19 0 8 0 mbufpl 256 2107 0 0 60 0 60 60 0 8 0 bufpl 288 34307 0 27971 453 0 453 453 0 8 0 anonpl 24 6209394 0 6188250 415 261 154 158 0 186 12 amapchunkpl 152 653400 0 652489 163 124 39 49 0 158 2 amappl16 200 61280 0 60537 323 276 47 53 0 8 6 amappl15 192 8087 0 8078 1 0 1 1 0 8 0 amappl14 184 3269 0 3262 1 0 1 1 0 8 0 amappl13 176 2715 0 2711 1 0 1 1 0 8 0 amappl12 168 1796 0 1792 1 0 1 1 0 8 0 amappl11 160 898 0 881 1 0 1 1 0 8 0 amappl10 152 2561 0 2553 1 0 1 1 0 8 0 amappl9 144 1294 0 1291 1 0 1 1 0 8 0 amappl8 136 5981 0 5778 8 0 8 8 0 8 0 amappl7 128 3969 0 3953 1 0 1 1 0 8 0 amappl6 120 1266 0 1234 6 4 2 2 0 8 0 amappl5 112 19224 0 19205 1 0 1 1 0 8 0 amappl4 104 5732 0 5688 2 0 2 2 0 8 0 amappl3 96 4546 0 4533 1 0 1 1 0 8 0 amappl2 88 5696 0 5623 3 1 2 3 0 8 0 amappl1 80 391857 0 391264 21 7 14 19 0 8 0 amappl 88 268495 0 268141 10 1 9 9 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 22096 0 21802 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22096 0 21802 2 0 2 2 0 8 0 vmmpekpl 168 150104 0 150003 5 0 5 5 0 8 0 vmmpepl 168 1990596 0 1987119 675 507 168 183 0 357 7 vmsppl 368 22095 0 21802 28 1 27 27 0 8 0 rwobjpl 56 479566 0 471527 144 28 116 118 0 8 0 pdppl 4096 44199 0 43869 1413 1079 334 334 0 8 4 pvpl 32 10377899 0 10352047 769 522 247 279 0 265 24 pmappl 248 22095 0 21802 19 0 19 19 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3049 0 1864 34 0 34 34 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(ffffffff82928d20,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff82928d20,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff82928d10) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd807e8235d0,ffff80002e35cac8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd807e8235d0,1000,ffff80002e35cb88,ffff80002e35cb58,0,0,8a1785465e3b2e50,1) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e35ccf0,ffff80002e35cd28,ffff80002e35cc70,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd8067a495f0,20001000,0,2) at uvm_fault+0x248 kpageflttrap(ffff80002e35ce80,20001000) at kpageflttrap+0x209 kerntrap(ffff80002e35ce80) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 pfioctl(4900,c0284457,ffff80002e35d2f0,1,ffff80002448ca80) at pfioctl+0x4519 sys/net/pf_ioctl.c:2944 VOP_IOCTL(fffffd806fde2b88,c0284457,ffff80002e35d2f0,1,fffffd807f7d8720,ffff80002448ca80) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80682dded8,c0284457,ffff80002e35d2f0,ffff80002448ca80) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002448ca80,ffff80002e35d408,ffff80002e35d460) at sys_ioctl+0x4a2 syscall(ffff80002e35d4d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e35d4d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x983c3e7cfc0, count: -17 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