witness: lock order reversal: 1st 0xffffffff8295dee0 pf_lock (pf_lock) 2nd 0xffffffff82990f30 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(ffffffff82990f30,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff82990f30,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff82990f20) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd807e1c8348,ffff800029af85b8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd807e1c8348,2f000,ffff800029af8678,ffff800029af8648,0,1,ca3ceb82651a7b34,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff800029af87e0,ffff800029af8818,ffff800029af8760,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd8068918450,20031000,0,1) at uvm_fault+0x248 kpageflttrap(ffff800029af8970,20031000) at kpageflttrap+0x209 kerntrap(ffff800029af8970) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd8076f9cc68,c0104453,ffff800029af8d50,2,fffffd807f7d86c0,ffff8000ffff1510) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e20c558,c0104453,ffff800029af8d50,ffff8000ffff1510) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff1510,ffff800029af8e68,ffff800029af8ec0) at sys_ioctl+0x4a2 syscall(ffff800029af8f30) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800029af8f30) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x399fa1ad1a0, count: -16 ddb{0}> show registers rdi 0x3 rsi 0xffffffff829097c0 __sancov_gen_cov_switch_values.134 rbp 0xffff800029af8380 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000ffff1510 r8 0xffff800029af82f0 r9 0x8080808080808080 r10 0xca9c28668574930 r11 0x1711e42b70249a1b r12 0xffffffff82ab26b0 w_lodata+0x52ac0 r13 0 r14 0xffffffff82aa3400 w_lodata+0x43810 r15 0xfffffd8002f4d780 rip 0xffffffff8175a568 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800029af8370 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=408174 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021184540,0xffff8000ffff1280 process=0xffff80002af28868 user=0xffff800029af3000, vmspace=0xfffffd8068918450 estcpu=34, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17906 309483 91460 0 2 0 syz-executor.7 17906 388903 91460 0 3 0x4000080 fsleep syz-executor.7 17906 468428 91460 0 3 0x4000080 fsleep syz-executor.7 83960 416303 37114 0 3 0x80 nanoslp syz-executor.0 83960 422564 37114 0 3 0x4000080 fsleep syz-executor.0 83960 29422 37114 0 3 0x4000080 fsleep syz-executor.0 85000 482752 17557 0 3 0x80 nanoslp syz-executor.2 85000 133076 17557 0 3 0x4000080 fsleep syz-executor.2 85000 516314 17557 0 2 0x4000000 syz-executor.2 62291 320589 73072 0 7 0 syz-executor.4 62291 404450 73072 0 2 0x4000000 syz-executor.4 62291 425845 73072 0 3 0x4000000 biowait syz-executor.4 *62291 408174 73072 0 7 0x4000000 syz-executor.4 62365 50738 82268 0 2 0 syz-executor.1 62365 349410 82268 0 3 0x4000080 fsleep syz-executor.1 71589 436114 31753 0 3 0x80 nanoslp syz-executor.3 71589 448883 31753 0 3 0x4000080 netio syz-executor.3 71589 422579 31753 0 3 0x4000080 fsleep syz-executor.3 31753 380966 32176 0 3 0x82 nanoslp syz-executor.3 17557 110930 32176 0 3 0x82 nanoslp syz-executor.2 73072 245106 32176 0 3 0x82 nanoslp syz-executor.4 68130 447662 32176 0 3 0x82 nanoslp syz-executor.5 37114 423178 32176 0 3 0x82 nanoslp syz-executor.0 13494 309170 32176 0 3 0x82 piperd syz-executor.6 91460 462034 32176 0 3 0x82 nanoslp syz-executor.7 84676 333381 0 0 3 0x14200 bored sosplice 28667 166336 0 0 3 0x14280 nfsidl nfsio 67109 158834 0 0 3 0x14280 nfsidl nfsio 1253 203185 0 0 3 0x14280 nfsidl nfsio 32925 94441 0 0 3 0x14280 nfsidl nfsio 95277 195949 0 0 3 0x14280 nfsidl nfsio 97002 403889 0 0 3 0x14280 nfsidl nfsio 76698 23672 0 0 3 0x14280 nfsidl nfsio 65994 15908 0 0 3 0x14280 nfsidl nfsio 94175 100594 0 0 3 0x14280 nfsidl nfsio 87103 211248 0 0 3 0x14280 nfsidl nfsio 87096 162270 0 0 3 0x14280 nfsidl nfsio 62666 498855 0 0 3 0x14280 nfsidl nfsio 48284 102064 0 0 3 0x14280 nfsidl nfsio 55179 375027 0 0 3 0x14280 nfsidl nfsio 89535 131101 0 0 3 0x14280 nfsidl nfsio 35903 67093 0 0 3 0x14280 nfsidl nfsio 75734 175493 0 0 3 0x14280 nfsidl nfsio 36810 22662 0 0 3 0x14280 nfsidl nfsio 36584 144842 0 0 3 0x14280 nfsidl nfsio 97462 232814 0 0 3 0x14280 nfsidl nfsio 82268 146735 32176 0 3 0x82 nanoslp syz-executor.1 32176 174497 41590 0 3 0x82 thrsleep syz-fuzzer 32176 1293 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 262798 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 241535 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 76214 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 437014 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 238729 41590 0 3 0x4000082 kqread syz-fuzzer 32176 72071 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 316110 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 396260 41590 0 3 0x4000082 thrsleep syz-fuzzer 32176 278571 41590 0 3 0x4000082 thrsleep syz-fuzzer 41590 217694 30064 0 3 0x10008a sigsusp ksh 30064 24634 69069 0 3 0x9a kqread sshd 80377 37979 1 0 3 0x100083 ttyin getty 69069 316620 1 0 3 0x88 kqread sshd 66441 457224 21989 74 3 0x1100092 bpf pflogd 21989 153280 1 0 3 0x80 netio pflogd 37490 34470 88164 73 3 0x1100090 kqread syslogd 88164 324147 1 0 3 0x100082 netio syslogd 75070 459845 1 0 3 0x100080 kqread resolvd 65171 84855 87371 77 3 0x100092 kqread dhcpleased 3697 356274 87371 77 3 0x100092 kqread dhcpleased 87371 170932 1 0 3 0x80 kqread dhcpleased 10504 132914 0 0 3 0x14200 bored smr 18483 376933 0 0 2 0x14200 zerothread 89162 199339 0 0 3 0x14200 aiodoned aiodoned 39391 230260 0 0 3 0x14200 syncer update 1939 90024 0 0 3 0x14200 cleaner cleaner 43572 431152 0 0 3 0x14200 reaper reaper 14289 349609 0 0 3 0x14200 pgdaemon pagedaemon 71966 226137 0 0 3 0x14200 bored viomb 35096 93877 0 0 3 0x40014200 acpi0 acpi0 18187 252148 0 0 3 0x40014200 idle1 28796 241708 0 0 3 0x14200 bored softnet 41305 240329 0 0 3 0x14200 bored systqmp 23973 205886 0 0 3 0x14200 bored systq 73163 44750 0 0 3 0x40014200 bored softclock 28880 508446 0 0 3 0x40014200 idle0 1 12291 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 62291 (syz-executor.4) thread 0xffff800021184540 (425845) exclusive rrwlock inode r = 0 (0xfffffd8061b861b0) #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 vn_write+0x123 sys/kern/vfs_vnops.c:411 #6 dofilewritev+0x19c sys/kern/sys_generic.c:381 #7 sys_write+0x83 sys/kern/sys_generic.c:301 #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 Process 62291 (syz-executor.4) thread 0xffff8000ffff1510 (408174) exclusive rwlock pf_lock r = 0 (0xffffffff8295dee0) #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 (0xffffffff82a135e0) #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 10197 6492K 7326K 78643K 13794 0 pcb 13 14K 16K 78643K 496 0 rtable 230 17K 19K 78643K 1404 0 ifaddr 88 18K 19K 78643K 476 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 158 0 ioctlops 0 0K 8K 78643K 1865 0 iov 0 0K 16K 78643K 760 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1404 88K 88K 78643K 2944 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 42 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 374 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 4127 0 sigio 0 0K 0K 78643K 243 0 proc 71 87K 124K 78643K 1031 0 subproc 104 6K 6K 78643K 273 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 94 0 in_multi 88 5K 6K 78643K 387 0 ether_multi 1 0K 0K 78643K 36 0 mrt 1 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 151 678K 678K 78643K 151 0 exec 0 0K 2K 78643K 1362 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 436 516K 531K 78643K 54798 0 UVM aobj 131 4K 4K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 216 0 NDP 12 0K 1K 78643K 117 0 temp 157 4757K 4825K 78643K 25860 0 kqueue 12 18K 24K 78643K 236 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 120 343 0 340 6 5 1 5 0 8 0 rtentry 112 316 0 220 4 0 4 4 0 8 0 unpcb 136 8662 0 8642 28 22 6 8 0 8 5 syncache 296 16 0 16 5 4 1 1 0 8 1 tcpqe 32 198 0 198 3 2 1 1 0 8 1 tcpcb 736 1190 0 1181 31 23 8 8 0 8 7 arp 120 48 0 30 1 0 1 1 0 8 0 inpcb 304 3259 0 3250 44 38 6 11 0 8 4 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 79 0 58 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 1 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1248 15 0 15 2 1 1 1 0 8 1 pfstscr 40 11 0 11 2 2 0 1 0 8 0 pffrag 232 11 0 10 3 2 1 1 0 482 0 pffrnode 88 11 0 10 3 2 1 1 0 8 0 pffrent 40 194 0 193 3 2 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 126 0 122 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 136 0 112 1 0 1 1 0 8 0 pfstkey 112 150 0 126 2 0 2 2 0 8 0 pfstate 320 142 0 118 5 0 5 5 0 8 1 pfrule 1360 100 0 71 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1310 0 894 36 9 27 29 0 8 0 art_table 32 1311 0 894 4 0 4 4 0 8 0 art_node 16 311 0 227 1 0 1 1 0 8 0 sysvmsgpl 40 58 0 18 1 0 1 1 0 8 0 semapl 112 302 0 292 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7566 0 6113 92 0 92 92 0 8 0 ffsino 272 7566 0 6113 98 0 98 98 0 8 0 nchpl 144 13483 0 11848 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 46460 0 46460 2 1 1 2 0 8 1 percpumem 16 91 0 51 1 0 1 1 0 8 0 vcpupl 2048 36 0 0 5 0 5 5 0 8 0 vmpool 560 42 0 6 3 0 3 3 0 8 0 pfiaddrpl 120 35 0 32 2 1 1 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 59720 0 59718 14 10 4 8 0 8 3 plimitpl 152 378 0 363 1 0 1 1 0 8 0 sigapl 424 4428 0 4363 8 0 8 8 0 8 0 futexpl 64 33001 0 32994 1 0 1 1 0 8 0 knotepl 120 176 0 0 6 0 6 6 0 8 0 kqueuepl 216 952 0 943 25 20 5 8 0 8 4 pipepl 336 821 0 793 25 22 3 9 0 8 0 fdescpl 496 4393 0 4364 6 2 4 5 0 8 0 filepl 152 33509 0 33257 51 33 18 20 0 8 7 lockfpl 104 913 0 910 3 2 1 2 0 8 0 lockfspl 48 258 0 255 1 0 1 1 0 8 0 sessionpl 144 37 0 20 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 96 3710 0 3698 1 0 1 1 0 8 0 zombiepl 144 4364 0 4363 1 0 1 1 0 8 0 processpl 1064 4428 0 4363 5 0 5 5 0 8 0 procpl 672 11980 0 11893 13 5 8 9 0 8 0 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 35 0 35 8 7 1 1 0 8 1 sockpl 480 12311 0 12279 270 258 12 30 0 8 6 mcl64k 65536 29 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 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 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 186 0 0 19 0 19 19 0 8 0 mtagpl 96 124 0 0 3 0 3 3 0 8 0 mbufpl 256 2445 0 0 147 0 147 147 0 8 0 bufpl 288 32912 0 26576 453 0 453 453 0 8 0 anonpl 24 1329258 0 1305936 214 57 157 161 0 186 13 amapchunkpl 152 199372 0 198233 85 35 50 55 0 158 3 amappl16 200 13172 0 12472 83 39 44 48 0 8 2 amappl15 192 1371 0 1366 1 0 1 1 0 8 0 amappl14 184 585 0 580 2 1 1 1 0 8 0 amappl13 176 694 0 688 1 0 1 1 0 8 0 amappl12 168 326 0 322 2 1 1 1 0 8 0 amappl11 160 47 0 33 1 0 1 1 0 8 0 amappl10 152 1105 0 1095 1 0 1 1 0 8 0 amappl9 144 649 0 646 1 0 1 1 0 8 0 amappl8 136 1510 0 1430 4 1 3 3 0 8 0 amappl7 128 765 0 751 1 0 1 1 0 8 0 amappl6 120 419 0 394 2 1 1 2 0 8 0 amappl5 112 4440 0 4419 1 0 1 1 0 8 0 amappl4 104 1765 0 1732 2 0 2 2 0 8 0 amappl3 96 721 0 709 1 0 1 1 0 8 0 amappl2 88 1647 0 1600 3 1 2 3 0 8 0 amappl1 80 81804 0 81198 23 9 14 19 0 8 0 amappl 88 53743 0 53440 9 1 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 72 137 0 7 3 0 3 3 0 8 0 uaddrrnd 24 4435 0 4370 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4435 0 4370 1 0 1 1 0 8 0 vmmpekpl 168 36171 0 36106 4 0 4 4 0 8 0 vmmpepl 168 405405 0 402620 208 78 130 158 0 357 2 vmsppl 368 4434 0 4370 8 1 7 7 0 8 0 rwobjpl 56 106427 0 98592 118 6 112 114 0 8 0 pdppl 4096 8877 0 8776 251 146 105 105 0 8 4 pvpl 32 2341080 0 2316290 346 110 236 246 0 265 25 pmappl 248 4434 0 4370 6 1 5 5 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1191 0 206 29 0 29 29 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(ffffffff82990f30,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff82990f30,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff82990f20) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd807e1c8348,ffff800029af85b8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd807e1c8348,2f000,ffff800029af8678,ffff800029af8648,0,1,ca3ceb82651a7b34,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff800029af87e0,ffff800029af8818,ffff800029af8760,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd8068918450,20031000,0,1) at uvm_fault+0x248 kpageflttrap(ffff800029af8970,20031000) at kpageflttrap+0x209 kerntrap(ffff800029af8970) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd8076f9cc68,c0104453,ffff800029af8d50,2,fffffd807f7d86c0,ffff8000ffff1510) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e20c558,c0104453,ffff800029af8d50,ffff8000ffff1510) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff1510,ffff800029af8e68,ffff800029af8ec0) at sys_ioctl+0x4a2 syscall(ffff800029af8f30) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800029af8f30) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x399fa1ad1a0, 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 __mp_lock(ffffffff82a133d8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a133d8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 sleep_setup(ffff800029ae6b40,ffffffff82ac96a0,120,ffffffff82555f50,2) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 tsleep(ffffffff82ac96a0,120,ffffffff82555f50,2) at tsleep+0x11f sys/kern/kern_synch.c:158 sys_nanosleep(ffff80002af0e008,ffff800029ae6c60,ffff800029ae6cc0) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff800029ae6d30) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800029ae6d30) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcaff0, count: -9