login: witness: lock order reversal: 1st 0xffffffff82944240 pf_lock (pf_lock) 2nd 0xffffffff829bbd70 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(ffffffff829bbd70,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff829bbd70,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff829bbd60) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd806090c108,ffff80002e3f87e8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd806090c108,0,ffff80002e3f88a8,ffff80002e3f8878,0,1,e1764ed55f131d7e,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e3f8a10,ffff80002e3f8a48,ffff80002e3f8990,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c4a5180,20001000,0,1) at uvm_fault+0x248 kpageflttrap(ffff80002e3f8ba0,20001000) at kpageflttrap+0x209 kerntrap(ffff80002e3f8ba0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd806f5f8d48,c0104451,ffff80002e3f8f80,3,fffffd807f7d8720,ffff8000ffff4540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80685f4a28,c0104451,ffff80002e3f8f80,ffff8000ffff4540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff4540,ffff80002e3f9098,ffff80002e3f90f0) at sys_ioctl+0x4a2 syscall(ffff80002e3f9160) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3f9160) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9219d51e840, count: -16 ddb{0}> show registers rdi 0x3 rsi 0xffffffff82964ba0 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e3f85b0 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000ffff4540 r8 0xffff80002e3f8520 r9 0x8080808080808080 r10 0x3cae8d1c67315588 r11 0x4079637a1fcb0fc2 r12 0xffffffff82b1aed0 w_lodata+0x526a0 r13 0 r14 0xffffffff82b0b280 w_lodata+0x42a50 r15 0xfffffd8002f66780 rip 0xffffffff815a2d98 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e3f85a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) pid=464783 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2548,0xffff8000ffff2018 process=0xffff80002e3b4c98 user=0xffff80002e3f4000, vmspace=0xfffffd806c4a5180 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93065 332910 80368 0 2 0 syz-executor.2 46604 123501 39633 0 2 0 syz-executor.6 41902 18566 39507 0 2 0 syz-executor.4 63540 110165 68934 0 2 0 syz-executor.3 63540 230245 68934 0 2 0x4000000 syz-executor.3 55351 141506 13377 0 2 0 syz-executor.5 *55351 464783 13377 0 7 0x4000000 syz-executor.5 96107 397285 37059 0 3 0x80 nanoslp syz-executor.1 96107 225887 37059 0 3 0x4000080 fsleep syz-executor.1 96107 475573 37059 0 3 0x4000000 biowait syz-executor.1 96107 239350 37059 0 3 0x4000080 fsleep syz-executor.1 37865 70417 1 0 3 0x100083 ttyin getty 80368 355683 5872 0 2 0x2 syz-executor.2 68934 156005 5872 0 3 0x82 nanoslp syz-executor.3 4789 214975 5872 0 3 0x82 nanoslp syz-executor.7 17484 5105 0 0 3 0x14280 nfsidl nfsio 45565 51297 0 0 3 0x14280 nfsidl nfsio 18794 86322 0 0 3 0x14280 nfsidl nfsio 49602 366870 0 0 3 0x14280 nfsidl nfsio 9798 356364 0 0 3 0x14280 nfsidl nfsio 67997 95612 0 0 3 0x14280 nfsidl nfsio 11303 329074 0 0 3 0x14280 nfsidl nfsio 17661 223188 0 0 3 0x14280 nfsidl nfsio 89394 46231 0 0 3 0x14280 nfsidl nfsio 27776 197004 0 0 3 0x14280 nfsidl nfsio 86489 302024 0 0 3 0x14280 nfsidl nfsio 49893 484880 0 0 3 0x14280 nfsidl nfsio 30577 316600 0 0 3 0x14280 nfsidl nfsio 50472 54475 0 0 3 0x14280 nfsidl nfsio 18623 452693 0 0 3 0x14280 nfsidl nfsio 51322 255563 0 0 3 0x14280 nfsidl nfsio 81902 504987 0 0 3 0x14280 nfsidl nfsio 71599 305325 0 0 3 0x14280 nfsidl nfsio 4254 312106 0 0 3 0x14280 nfsidl nfsio 16835 166972 0 0 3 0x14280 nfsidl nfsio 22890 373688 0 0 3 0x14200 acct acct 13377 119708 5872 0 3 0x82 nanoslp syz-executor.5 64544 280564 0 0 3 0x14200 bored sosplice 39633 181585 5872 0 3 0x82 nanoslp syz-executor.6 39507 406950 5872 0 3 0x82 nanoslp syz-executor.4 37059 510318 5872 0 3 0x82 nanoslp syz-executor.1 22131 131475 5872 0 3 0x82 nanoslp syz-executor.0 5872 19349 67118 0 3 0x82 thrsleep syz-fuzzer 5872 496315 67118 0 3 0x4000082 nanoslp syz-fuzzer 5872 309372 67118 0 3 0x4000082 thrsleep syz-fuzzer 5872 390605 67118 0 3 0x4000082 thrsleep syz-fuzzer 5872 391735 67118 0 3 0x4000082 nanoslp syz-fuzzer 5872 67345 67118 0 3 0x4000082 thrsleep syz-fuzzer 5872 249445 67118 0 3 0x4000082 kqread syz-fuzzer 5872 32653 67118 0 3 0x4000082 thrsleep syz-fuzzer 67118 467492 50339 0 3 0x10008a sigsusp ksh 50339 456321 13583 0 3 0x9a kqread sshd 13583 280879 1 0 3 0x88 kqread sshd 99398 86358 25116 74 3 0x1100092 bpf pflogd 25116 465287 1 0 3 0x80 netio pflogd 34195 10179 78174 73 3 0x1100090 kqread syslogd 78174 329416 1 0 3 0x100082 netio syslogd 72845 106213 1 0 3 0x100080 kqread resolvd 66996 117021 73777 77 3 0x100092 kqread dhcpleased 32852 179628 73777 77 3 0x100092 kqread dhcpleased 73777 225969 1 0 3 0x80 kqread dhcpleased 66819 485258 0 0 3 0x14200 bored smr 64059 182099 0 0 2 0x14200 zerothread 77017 113784 0 0 3 0x14200 aiodoned aiodoned 17140 102014 0 0 3 0x14200 syncer update 33135 453224 0 0 3 0x14200 cleaner cleaner 55861 488985 0 0 7 0x14200 reaper 54931 8088 0 0 3 0x14200 pgdaemon pagedaemon 45985 403475 0 0 3 0x14200 bored viomb 15491 190455 0 0 3 0x40014200 acpi0 acpi0 53012 81617 0 0 3 0x40014200 idle1 67349 334177 0 0 3 0x14200 bored softnet 51056 345045 0 0 3 0x14200 bored systqmp 71441 29392 0 0 3 0x14200 bored systq 25704 102905 0 0 3 0x40014200 bored softclock 94616 502871 0 0 3 0x40014200 idle0 1 263819 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 55351 (syz-executor.5) thread 0xffff8000ffff4540 (464783) exclusive rwlock pf_lock r = 0 (0xffffffff82944240) #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 (0xffffffff82a6f1a0) #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 96107 (syz-executor.1) thread 0xffff8000ffff3508 (475573) exclusive rrwlock inode r = 0 (0xfffffd8066af46f8) #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_writev+0xa7 sys/kern/sys_generic.c:328 #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 10183 6489K 6876K 78643K 14932 0 pcb 13 14K 15K 78643K 623 0 rtable 226 19K 19K 78643K 988 0 ifaddr 87 19K 20K 78643K 293 0 sysctl 2 0K 0K 78643K 2 0 counters 54 35K 35K 78643K 100 0 ioctlops 0 0K 4K 78643K 5716 0 iov 0 0K 16K 78643K 383 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1334 83K 84K 78643K 2931 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 29 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 27 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 93K 78643K 6262 0 sigio 0 0K 0K 78643K 11 0 proc 70 87K 124K 78643K 835 0 subproc 104 6K 6K 78643K 195 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 30 0 in_multi 74 5K 7K 78643K 219 0 ether_multi 1 0K 0K 78643K 23 0 mrt 1 0K 0K 78643K 15 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 2K 78643K 1694 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 361 219K 237K 78643K 80006 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 761 0 NDP 11 0K 2K 78643K 66 0 temp 143 4745K 4805K 78643K 26375 0 kqueue 12 18K 22K 78643K 165 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 97 0 94 1 0 1 1 0 8 0 rtentry 112 289 0 198 4 0 4 4 0 8 0 unpcb 136 4070 0 4055 22 17 5 7 0 8 4 syncache 296 20 0 20 6 6 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 1667 0 1654 38 36 2 14 0 8 0 arp 120 34 0 19 1 0 1 1 0 8 0 inpcb 312 5074 0 5066 40 36 4 11 0 8 3 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 50 0 31 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 2 0 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1248 6 0 6 1 1 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 40 0 39 2 1 1 1 0 482 0 pffrnode 88 40 0 39 2 1 1 1 0 8 0 pffrent 40 271 0 270 2 1 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 17 0 8 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 0 1 1 0 8 1 pfstitem 24 28 0 26 1 0 1 1 0 8 0 pfstkey 112 38 0 36 1 0 1 1 0 8 0 pfstate 320 33 0 31 3 2 1 3 0 8 0 pfsrctr 152 116 0 115 1 0 1 1 0 8 0 pfrule 1360 175 0 158 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1052 0 644 31 5 26 31 0 8 0 art_table 32 1053 0 644 4 0 4 4 0 8 0 art_node 16 287 0 203 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 23 0 13 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9938 0 8494 91 0 91 91 0 8 0 ffsino 272 9938 0 8494 97 0 97 97 0 8 0 nchpl 144 18896 0 17260 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 57348 0 57348 3 2 1 2 0 8 1 percpumem 16 62 0 23 1 0 1 1 0 8 0 vcpupl 2048 9 0 1 2 0 2 2 0 8 0 vmpool 560 9 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 16 0 8 2 1 1 1 0 8 0 scxspl 216 50382 0 50380 10 9 1 8 0 8 0 plimitpl 152 280 0 265 1 0 1 1 0 8 0 sigapl 424 6581 0 6514 8 0 8 8 0 8 0 futexpl 64 58893 0 58891 1 0 1 1 0 8 0 knotepl 120 578 0 0 17 0 17 17 0 8 0 kqueuepl 216 408 0 400 9 8 1 5 0 8 0 pipepl 336 1082 0 1054 22 19 3 8 0 8 0 fdescpl 496 6545 0 6516 5 1 4 5 0 8 0 filepl 152 35725 0 35478 49 34 15 19 0 8 5 lockfpl 104 1798 0 1796 2 1 1 2 0 8 0 lockfspl 48 667 0 665 1 0 1 1 0 8 0 sessionpl 144 33 0 16 1 0 1 1 0 8 0 pgrppl 48 68 0 51 1 0 1 1 0 8 0 ucredpl 96 2483 0 2469 1 0 1 1 0 8 0 zombiepl 144 6516 0 6514 1 0 1 1 0 8 0 processpl 1064 6581 0 6514 5 0 5 5 0 8 0 procpl 672 17001 0 16922 12 4 8 9 0 8 0 srpgc 96 18 0 18 4 4 0 1 0 8 0 sosppl 168 30 0 30 4 4 0 1 0 8 0 sockpl 480 9254 0 9228 102 90 12 25 0 8 8 mcl64k 65536 18 0 0 3 0 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 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 160 0 0 18 0 18 18 0 8 0 mtagpl 96 212 0 0 5 0 5 5 0 8 0 mbufpl 256 4765 0 0 292 0 292 292 0 8 0 bufpl 288 11732 0 5396 453 0 453 453 0 8 0 anonpl 24 1724615 0 1706178 159 40 119 142 0 186 2 amapchunkpl 152 190844 0 190065 53 18 35 39 0 158 1 amappl16 200 14292 0 13711 58 26 32 44 0 8 0 amappl15 192 481 0 475 1 0 1 1 0 8 0 amappl14 184 1100 0 1097 1 0 1 1 0 8 0 amappl13 176 1066 0 1061 1 0 1 1 0 8 0 amappl12 168 236 0 235 3 2 1 1 0 8 0 amappl11 160 2016 0 1997 1 0 1 1 0 8 0 amappl10 152 711 0 702 1 0 1 1 0 8 0 amappl9 144 608 0 605 1 0 1 1 0 8 0 amappl8 136 1526 0 1439 4 0 4 4 0 8 0 amappl7 128 853 0 839 1 0 1 1 0 8 0 amappl6 120 369 0 343 2 1 1 2 0 8 0 amappl5 112 5386 0 5365 1 0 1 1 0 8 0 amappl4 104 4135 0 4104 2 1 1 2 0 8 0 amappl3 96 1607 0 1593 1 0 1 1 0 8 0 amappl2 88 2546 0 2497 3 1 2 3 0 8 0 amappl1 80 118875 0 118319 22 9 13 19 0 8 0 amappl 88 79096 0 78855 7 0 7 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 6554 0 6517 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6554 0 6517 1 0 1 1 0 8 0 vmmpekpl 168 51129 0 51078 3 0 3 3 0 8 0 vmmpepl 168 587189 0 584662 177 55 122 135 0 357 1 vmsppl 368 6553 0 6516 4 0 4 4 0 8 0 rwobjpl 56 142670 0 135044 113 4 109 112 0 8 0 pdppl 4096 13115 0 13040 180 103 77 83 0 8 2 pvpl 32 2927933 0 2905113 319 122 197 263 0 265 3 pmappl 248 6553 0 6516 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1293 0 204 32 0 32 32 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(ffffffff829bbd70,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffffffff829bbd70,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_write(ffffffff829bbd60) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_io(fffffd806090c108,ffff80002e3f87e8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243 uvn_get(fffffd806090c108,0,ffff80002e3f88a8,ffff80002e3f8878,0,1,e1764ed55f131d7e,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076 uvm_fault_lower(ffff80002e3f8a10,ffff80002e3f8a48,ffff80002e3f8990,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c4a5180,20001000,0,1) at uvm_fault+0x248 kpageflttrap(ffff80002e3f8ba0,20001000) at kpageflttrap+0x209 kerntrap(ffff80002e3f8ba0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 VOP_IOCTL(fffffd806f5f8d48,c0104451,ffff80002e3f8f80,3,fffffd807f7d8720,ffff8000ffff4540) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80685f4a28,c0104451,ffff80002e3f8f80,ffff8000ffff4540) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff4540,ffff80002e3f9098,ffff80002e3f90f0) at sys_ioctl+0x4a2 syscall(ffff80002e3f9160) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3f9160) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9219d51e840, 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(ffffffff82a6ef98) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a6ef98) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135c70,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd806c4a5010) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd806c4a5010) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8