witness: lock order reversal: 1st 0xffffffff829ac890 pf_lock (pf_lock) 2nd 0xffffffff8295ec00 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffffffff8295ec00,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff8295ec00,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff8295ebf0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd8074268650,ffff80002e36fe18,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd8074268650,0,ffff80002e36fed8,ffff80002e36fea8,0,1,af4189375a3aa7f0,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e370040,ffff80002e370078,ffff80002e36ffc0,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806a8b08b0,20004000,0,1) at uvm_fault+0x248 kpageflttrap(ffff80002e3701d0,20004000) at kpageflttrap+0x209 kerntrap(ffff80002e3701d0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd8070dff9c8,c0104453,ffff80002e3705b0,b,fffffd807f7d8660,ffff80002e374540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067e053a8,c0104453,ffff80002e3705b0,ffff80002e374540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e374540,ffff80002e3706c8,ffff80002e370720) at sys_ioctl+0x4a2 syscall(ffff80002e370790) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e370790) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x382b65eebc0, count: -16 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff80002e36fbe0 rbx 0x3 rdx 0xffff800000bf3ac0 rcx 0 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffff80002e36fb50 r9 0x8080808080808080 r10 0xb3f799c6963776ac r11 0x36bb9d3f50825efd r12 0xffffffff82b79210 w_lodata+0x523e0 r13 0 r14 0xffffffff82b66440 w_lodata+0x3f610 r15 0xfffffd8002f64780 rip 0xffffffff822911e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e36fbd0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=360997 stat=onproc flags process=0 proc=4000000 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002e374fc0,0xffff80002e375cf0 process=0xffff8000ffff94d0 user=0xffff80002e36b000, vmspace=0xfffffd806a8b08b0 estcpu=33, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99891 320839 92753 0 2 0 syz-executor.0 75273 162618 42166 0 7 0 syz-executor.6 75273 451814 42166 0 3 0x4000080 fsleep syz-executor.6 63926 348508 65058 0 3 0x80 fsleep syz-executor.1 63926 184996 65058 0 2 0x4000000 syz-executor.1 36542 457951 28270 0 3 0x80 nanoslp syz-executor.4 36542 465289 28270 0 3 0x4000080 fsleep syz-executor.4 36542 1884 28270 0 3 0x4000080 fsleep syz-executor.4 36542 133580 28270 0 3 0x4000080 fsleep syz-executor.4 17618 92939 92111 0 3 0x80 fsleep syz-executor.2 17618 423054 92111 0 2 0x4000000 syz-executor.2 75744 147772 38758 0 3 0x80 fsleep syz-executor.3 *75744 360997 38758 0 7 0x4000000 syz-executor.3 37929 324223 43817 0 3 0x82 nanoslp syz-executor.7 28270 32709 43817 0 3 0x82 nanoslp syz-executor.4 68653 71351 1 0 3 0x100083 ttyin getty 92753 85116 43817 0 3 0x82 nanoslp syz-executor.0 65058 421318 43817 0 3 0x82 nanoslp syz-executor.1 42166 266895 43817 0 3 0x82 nanoslp syz-executor.6 93533 62157 43817 0 3 0x2 biowait syz-executor.5 92111 178018 43817 0 3 0x82 nanoslp syz-executor.2 23509 158335 0 0 3 0x14200 acct acct 38758 210977 43817 0 3 0x82 nanoslp syz-executor.3 54388 516864 0 0 3 0x14200 bored sosplice 43817 439732 82168 0 3 0x82 thrsleep syz-fuzzer 43817 453011 82168 0 3 0x4000082 nanoslp syz-fuzzer 43817 206926 82168 0 3 0x4000082 kqread syz-fuzzer 43817 309562 82168 0 3 0x4000082 thrsleep syz-fuzzer 43817 448075 82168 0 3 0x4000082 nanoslp syz-fuzzer 43817 142491 82168 0 3 0x4000082 thrsleep syz-fuzzer 43817 317500 82168 0 3 0x4000082 thrsleep syz-fuzzer 43817 456682 82168 0 3 0x4000082 thrsleep syz-fuzzer 43817 69610 82168 0 3 0x4000082 thrsleep syz-fuzzer 82168 349588 96868 0 3 0x10008a sigsusp ksh 96868 321522 71191 0 3 0x9a kqread sshd 71191 83831 1 0 3 0x88 kqread sshd 96766 147060 69445 74 3 0x1100092 bpf pflogd 69445 2379 1 0 3 0x80 netio pflogd 13496 6287 76630 73 3 0x1100090 kqread syslogd 76630 404013 1 0 3 0x100082 netio syslogd 45603 51376 1 0 3 0x100080 kqread resolvd 40620 447561 96634 77 3 0x100092 kqread dhcpleased 22688 456597 96634 77 3 0x100092 kqread dhcpleased 96634 182619 1 0 3 0x80 kqread dhcpleased 27919 308522 0 0 3 0x14200 bored smr 36095 155278 0 0 2 0x14200 zerothread 28746 293356 0 0 3 0x14200 aiodoned aiodoned 82065 48770 0 0 3 0x14200 syncer update 27543 222872 0 0 3 0x14200 cleaner cleaner 58723 276382 0 0 3 0x14200 reaper reaper 32248 471698 0 0 3 0x14200 pgdaemon pagedaemon 6476 50686 0 0 3 0x14200 bored viomb 98040 434519 0 0 3 0x40014200 acpi0 acpi0 4698 239381 0 0 3 0x40014200 idle1 29605 437700 0 0 3 0x14200 bored softnet 36948 475225 0 0 3 0x14200 bored systqmp 24843 267126 0 0 3 0x14200 bored systq 68590 55564 0 0 3 0x40014200 bored softclock 33692 41049 0 0 3 0x40014200 idle0 1 118310 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 75273 (syz-executor.6) thread 0xffff80002e374fc0 (162618) shared rwlock vmmaplk r = 0 (0xfffffd8074409488) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 Process 75744 (syz-executor.3) thread 0xffff80002e374540 (360997) exclusive rwlock pf_lock r = 0 (0xffffffff829ac890) #0 witness_lock+0x44d #1 pfioctl+0x47e7 #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 (0xffffffff829cd168) #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 93533 (syz-executor.5) thread 0xffff80002e374a80 (62157) exclusive rrwlock inode r = 0 (0xfffffd80795271b8) #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 (0xfffffd806f711e68) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 6497K 6884K 78643K 27572 0 pcb 13 20K 25K 78643K 4138 0 rtable 253 11K 12K 78643K 4230 0 ifaddr 99 20K 21K 78643K 658 0 counters 56 35K 35K 78643K 134 0 ioctlops 0 0K 5K 78643K 15748 0 iov 0 0K 28K 78643K 3368 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1324 83K 84K 78643K 6763 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 635 0 VM map 2 1K 1K 78643K 2 0 sem 10 20K 40K 78643K 16 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 43243 0 sigio 0 0K 0K 78643K 209 0 proc 70 87K 124K 78643K 3116 0 subproc 104 6K 6K 78643K 351 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2901 0 in_multi 96 6K 7K 78643K 1448 0 ether_multi 1 0K 0K 78643K 40 0 mrt 1 0K 0K 78643K 211 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 115 519K 519K 78643K 115 0 exec 0 0K 2K 78643K 2345 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 522 267K 317K 78643K 565056 0 UVM aobj 131 4K 4K 78643K 165 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 150 0 NDP 13 0K 2K 78643K 106 0 temp 138 4719K 4843K 78643K 440561 0 kqueue 12 18K 26K 78643K 1115 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 1058 0 1055 7 6 1 3 0 8 0 rtentry 112 1148 0 1041 4 0 4 4 0 8 0 unpcb 136 30901 0 30886 236 235 1 9 0 8 0 syncache 296 135 0 135 13 13 0 1 0 8 0 tcpcb 736 33113 0 33086 745 737 8 26 0 8 5 arp 120 57 0 39 1 0 1 1 0 8 0 inpcb 304 53306 0 53296 537 531 6 16 0 8 5 nd6 48 96 0 67 1 0 1 1 0 8 0 pkpcb 40 19 0 19 3 3 0 1 0 8 0 kcovpl 48 27 0 19 1 0 1 1 0 8 0 ppxss 1248 13 0 13 4 4 0 1 0 8 0 pfstscr 40 3802 0 3802 15 15 0 1 0 8 0 pffrag 232 44 0 42 8 7 1 1 0 482 0 pffrnode 88 44 0 42 8 7 1 1 0 8 0 pffrent 40 223 0 221 10 9 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 pfrktable 1344 33 0 26 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2126 0 2124 1 0 1 1 0 8 0 pfstkey 112 14979 0 14977 1 0 1 1 0 8 0 pfstate 320 7789 0 7787 3 2 1 3 0 8 0 pfsrctr 152 3149 0 3145 3 2 1 1 0 8 0 pfrule 1360 268 0 253 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 6117 0 5649 46 15 31 34 0 8 0 art_table 32 6118 0 5649 5 0 5 5 0 8 0 art_node 16 503 0 409 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 162 0 34 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 54476 0 52817 104 0 104 104 0 8 0 ffsino 272 54476 0 52817 111 0 111 111 0 8 0 nchpl 144 111821 0 110186 62 0 62 62 0 8 0 uvmvnodes 80 7184 0 0 147 0 147 147 0 8 0 vnodes 224 7184 0 0 423 0 423 423 0 8 0 namei 1024 332542 0 332541 3 2 1 2 0 8 0 percpumem 16 79 0 39 1 0 1 1 0 8 0 vcpupl 2048 14 0 3 2 0 2 2 0 8 0 vmpool 560 14 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 13 0 6 1 0 1 1 0 8 0 scxspl 216 305451 0 305450 22 21 1 8 0 8 0 plimitpl 152 496 0 481 1 0 1 1 0 8 0 sigapl 424 43511 0 43465 6 0 6 6 0 8 0 futexpl 64 451969 0 451962 2 1 1 1 0 8 0 knotepl 120 801 0 0 11 3 8 10 0 8 0 kqueuepl 216 2804 0 2796 41 40 1 6 0 8 0 pipepl 336 4342 0 4314 91 88 3 8 0 8 0 fdescpl 496 43495 0 43466 6 2 4 5 0 8 0 filepl 152 245655 0 245410 470 457 13 23 0 8 3 lockfpl 104 5221 0 5219 6 5 1 2 0 8 0 lockfspl 48 1982 0 1980 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 73 0 56 1 0 1 1 0 8 0 ucredpl 96 14976 0 14958 1 0 1 1 0 8 0 zombiepl 144 43466 0 43465 1 0 1 1 0 8 0 processpl 1064 43511 0 43465 4 0 4 4 0 8 0 procpl 672 129906 0 129845 72 65 7 8 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 12 0 12 4 4 0 1 0 8 0 sockpl 480 85285 0 85257 1513 1501 12 37 0 8 8 mcl64k 65536 41 0 0 4 1 3 3 0 8 1 mcl16k 16384 55 0 0 6 3 3 3 0 8 0 mcl12k 12288 73 0 0 4 2 2 2 0 8 0 mcl9k 9216 57 0 0 3 1 2 2 0 8 0 mcl8k 8192 89 0 0 5 1 4 4 0 8 1 mcl4k 4096 73 0 0 5 2 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 879 0 0 84 42 42 76 0 8 0 mtagpl 96 661 0 0 11 6 5 10 0 8 1 mbufpl 256 2267 0 0 52 2 50 50 0 8 1 bufpl 288 56902 0 49717 514 0 514 514 0 8 0 anonpl 24 11901383 0 11881870 380 252 128 186 0 186 0 amapchunkpl 152 1354979 0 1354092 124 86 38 63 0 158 1 amappl16 200 93544 0 92949 147 115 32 47 0 8 0 amappl15 192 7159 0 7150 1 0 1 1 0 8 0 amappl14 184 596 0 587 1 0 1 1 0 8 0 amappl13 176 2605 0 2604 1 0 1 1 0 8 0 amappl12 168 11032 0 11025 1 0 1 1 0 8 0 amappl11 160 12061 0 12040 1 0 1 1 0 8 0 amappl10 152 2048 0 2040 1 0 1 1 0 8 0 amappl9 144 4776 0 4771 1 0 1 1 0 8 0 amappl8 136 5367 0 5161 10 2 8 8 0 8 0 amappl7 128 4045 0 4033 1 0 1 1 0 8 0 amappl6 120 4579 0 4548 2 1 1 2 0 8 0 amappl5 112 29213 0 29198 1 0 1 1 0 8 0 amappl4 104 23120 0 23071 3 1 2 2 0 8 0 amappl3 96 13553 0 13538 1 0 1 1 0 8 0 amappl2 88 13220 0 13169 3 1 2 3 0 8 0 amappl1 80 781318 0 780736 24 11 13 19 0 8 0 amappl 88 563360 0 563071 10 2 8 8 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 72 164 0 34 3 0 3 3 0 8 0 uaddrrnd 24 43509 0 43469 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 43509 0 43469 1 0 1 1 0 8 0 vmmpekpl 168 319040 0 318990 4 0 4 4 0 8 0 vmmpepl 168 3859181 0 3856428 328 199 129 146 0 357 0 vmsppl 368 43508 0 43469 6 2 4 5 0 8 0 rwobjpl 56 926805 0 917739 157 27 130 133 0 8 0 pdppl 4096 87025 0 86949 2103 2023 80 83 0 8 4 pvpl 32 19430846 0 19406659 759 553 206 315 0 265 0 pmappl 248 43508 0 43469 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3891 0 2921 30 0 30 30 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff829b2ff0) 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 __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002121fae0,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002121fc30,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ccf60) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd8074409470,ab1cb5b0000,0,1) at uvm_fault+0x191 sys/uvm/uvm_fault.c:624 upageflttrap(ffff800021220100,ab1cb5b0000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800021220100) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc9f00, count: -17 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffffffff8295ec00,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff8295ec00,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff8295ebf0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd8074268650,ffff80002e36fe18,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd8074268650,0,ffff80002e36fed8,ffff80002e36fea8,0,1,af4189375a3aa7f0,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e370040,ffff80002e370078,ffff80002e36ffc0,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806a8b08b0,20004000,0,1) at uvm_fault+0x248 kpageflttrap(ffff80002e3701d0,20004000) at kpageflttrap+0x209 kerntrap(ffff80002e3701d0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd8070dff9c8,c0104453,ffff80002e3705b0,b,fffffd807f7d8660,ffff80002e374540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067e053a8,c0104453,ffff80002e3705b0,ffff80002e374540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002e374540,ffff80002e3706c8,ffff80002e370720) at sys_ioctl+0x4a2 syscall(ffff80002e370790) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e370790) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x382b65eebc0, count: -16