login: witness: lock order reversal: 1st 0xffffffff8290fe50 netlock (netlock) 2nd 0xfffffd806ab341a0 vmmaplk (&map->lock) lock order "&map->lock"(rwlock) -> "netlock"(rwlock) first seen at: #0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 #1 udp_sysctl+0x8a sys/netinet/udp_usrreq.c:1269 #2 sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 #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 lock order "netlock"(rwlock) -> "&map->lock"(rwlock) first seen at: #0 rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 #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 kpageflttrap+0x209 #5 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x53 #8 ifioctl_get+0x2dd #9 soo_ioctl+0x26c #10 sys_ioctl+0x4a2 #11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #12 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(fffffd806ab341a0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd806ab341a0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd806ab34190) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800028ec7e20,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff800028ec7e20,ffff800028ec7e58,ffff800028ec7e80) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd806ab34188,20000000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff800028ec7fb0,20000300) at kpageflttrap+0x209 kerntrap(ffff800028ec7fb0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 ifioctl_get(c0106924,ffff800028ec8260) at ifioctl_get+0x2dd soo_ioctl(fffffd807abfa390,c0106924,ffff800028ec8260,ffff800021202008) at soo_ioctl+0x26c sys_ioctl(ffff800021202008,ffff800028ec8378,ffff800028ec83d0) at sys_ioctl+0x4a2 syscall(ffff800028ec8440) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800028ec8440) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8aca538d880, count: -15 ddb{1}> show registers rdi 0x3 rsi 0xffffffff8294abb0 __sancov_gen_cov_switch_values.134 rbp 0xffff800028ec7b10 rbx 0x3 rdx 0 rcx 0 rax 0xffff800021202008 r8 0xffff800028ec7a80 r9 0x8080808080808080 r10 0x124a143ebffcf111 r11 0x53644d9b45e4c84b r12 0xffffffff82ab02d0 w_lodata+0x52960 r13 0 r14 0xffffffff82aabaa0 w_lodata+0x4e130 r15 0xfffffd8002f62d80 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800028ec7b00 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=218948 stat=onproc flags process=10 proc=4000000 pri=67, usrpri=67, nice=20 forw=0xffffffffffffffff, list=0xffff800021203ce8,0xffff8000211fba50 process=0xffff8000ffff0440 user=0xffff800028ec3000, vmspace=0xfffffd806ab34188 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54040 411390 92446 0 2 0x2 sh 50309 340658 40811 0 2 0x2 ndp 40811 258427 75358 0 3 0x10008a sigsusp sh 84364 75674 1322 32767 3 0x90 nanoslp syz-executor.5 84364 131413 1322 32767 3 0x4000090 fsleep syz-executor.5 84364 311059 1322 32767 2 0x4000010 syz-executor.5 *84364 218948 1322 32767 7 0x4000010 syz-executor.5 84364 326704 1322 32767 2 0x4000010 syz-executor.5 84364 293184 1322 32767 2 0x4000010 syz-executor.5 40937 465970 96786 32767 7 0x10 syz-executor.7 40937 490671 96786 32767 3 0x4000090 fsleep syz-executor.7 38573 62195 13095 32767 2 0x10 syz-executor.6 96786 175444 38302 32767 3 0x90 nanoslp syz-executor.7 13095 502457 74921 0 3 0x82 wait syz-executor.6 1322 360902 39903 32767 3 0x90 nanoslp syz-executor.5 38302 458290 74921 0 3 0x82 wait syz-executor.7 39903 515961 74921 0 3 0x82 wait syz-executor.5 68965 423725 79211 32767 3 0x90 piperd syz-executor.4 60289 367318 19283 32767 3 0x90 piperd syz-executor.3 92446 80959 13013 0 3 0x80 wait syz-executor.2 88209 46511 34101 32767 3 0x10 biowait syz-executor.1 79211 478377 74921 0 3 0x82 wait syz-executor.4 19283 449931 74921 0 3 0x82 wait syz-executor.3 13013 120109 74921 0 3 0x82 wait syz-executor.2 34101 459729 74921 0 3 0x82 wait syz-executor.1 75358 307954 59506 0 3 0x80 wait syz-executor.0 59506 425823 74921 0 3 0x82 wait syz-executor.0 74921 41241 67613 0 3 0x82 thrsleep syz-fuzzer 74921 91498 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 453233 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 217254 67613 0 3 0x4000082 kqread syz-fuzzer 74921 306977 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 326805 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 440475 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 267572 67613 0 3 0x4000082 thrsleep syz-fuzzer 74921 187133 67613 0 3 0x4000082 thrsleep syz-fuzzer 67613 209926 51497 0 3 0x10008a sigsusp ksh 51497 386552 56839 0 3 0x9a kqread sshd 37943 159059 1 0 3 0x100083 ttyin getty 56839 423950 1 0 3 0x88 kqread sshd 95665 148348 64516 73 3 0x1100090 kqread syslogd 64516 243643 1 0 3 0x100082 netio syslogd 27952 383698 1 0 3 0x100080 kqread resolvd 27082 219935 24510 77 3 0x100092 kqread dhcpleased 79733 495674 24510 77 3 0x100092 kqread dhcpleased 24510 18418 1 0 3 0x80 kqread dhcpleased 49595 333816 0 0 3 0x14200 bored smr 55434 103877 0 0 2 0x14200 zerothread 36419 294554 0 0 3 0x14200 aiodoned aiodoned 74202 182807 0 0 3 0x14200 syncer update 81152 25116 0 0 3 0x14200 cleaner cleaner 27801 226108 0 0 3 0x14200 reaper reaper 63342 352694 0 0 3 0x14200 pgdaemon pagedaemon 71740 405302 0 0 3 0x14200 bored viomb 61258 56053 0 0 3 0x40014200 acpi0 acpi0 42965 391027 0 0 3 0x40014200 idle1 51557 484688 0 0 3 0x14200 bored softnet 78605 345594 0 0 3 0x14200 bored systqmp 33063 447967 0 0 3 0x14200 bored systq 68686 272575 0 0 3 0x40014200 bored softclock 17155 62733 0 0 3 0x40014200 idle0 1 145504 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 84364 (syz-executor.5) thread 0xffff800021202008 (218948) shared rwlock netlock r = 0 (0xffffffff8290fe50) #0 witness_lock+0x44d #1 ifioctl_get+0x2d5 sys/net/if.c:2319 #2 soo_ioctl+0x26c #3 sys_ioctl+0x4a2 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829de988) #0 witness_lock+0x44d #1 soo_ioctl+0x25a sys/kern/sys_socket.c:136 #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 40937 (syz-executor.7) thread 0xffff800021202548 (465970) exclusive rwlock amaplk r = 0 (0xfffffd806aaa5e80) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806ab34760) #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 88209 (syz-executor.1) thread 0xffff8000211faa80 (46511) exclusive rrwlock inode r = 0 (0xfffffd8073e843d8) #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 (0xfffffd80679da918) #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 10169 6406K 6419K 78643K 11259 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 342 0 ifaddr 81 16K 16K 78643K 82 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 33 0 iov 0 0K 0K 78643K 3 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1270 79K 79K 78643K 1285 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 4 0K 0K 78643K 6 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 151 0 proc 56 74K 111K 78643K 457 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 99 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 37 175K 175K 78643K 37 0 exec 0 0K 2K 78643K 617 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 280 80K 81K 78643K 3261 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 27 2K 2K 78643K 27 0 temp 84 4693K 4757K 78643K 4308 0 kqueue 12 18K 18K 78643K 22 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 34 0 31 1 0 1 1 0 8 0 rtentry 112 109 0 1 4 0 4 4 0 8 0 unpcb 136 29 0 16 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 214 0 214 1 0 1 1 0 8 1 tcpcb 736 10 0 4 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 304 59 0 51 1 0 1 1 0 8 0 nd6 48 22 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 450 0 0 29 0 29 29 0 8 0 art_table 32 451 0 0 4 0 4 4 0 8 0 art_node 16 108 0 10 1 0 1 1 0 8 0 semapl 112 4 0 2 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1486 0 60 90 0 90 90 0 8 0 ffsino 272 1486 0 60 96 0 96 96 0 8 0 nchpl 144 1749 0 90 62 0 62 62 0 8 0 uvmvnodes 80 1599 0 0 33 0 33 33 0 8 0 vnodes 224 1599 0 0 95 0 95 95 0 8 0 namei 1024 5858 0 5857 2 0 2 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 5379 0 5378 2 1 1 2 0 8 0 plimitpl 152 30 0 8 1 0 1 1 0 8 0 sigapl 424 433 0 385 7 0 7 7 0 8 1 futexpl 64 129 0 127 1 0 1 1 0 8 0 knotepl 120 112 0 0 4 0 4 4 0 8 0 kqueuepl 216 18 0 10 1 0 1 1 0 8 0 pipepl 336 130 0 102 4 1 3 3 0 8 0 fdescpl 496 419 0 385 7 1 6 6 0 8 0 filepl 152 1528 0 1293 11 1 10 10 0 8 0 lockfpl 104 14 0 12 1 0 1 1 0 8 0 lockfspl 48 8 0 6 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 96 85 0 69 1 0 1 1 0 8 0 zombiepl 144 385 0 385 1 0 1 1 0 8 1 processpl 1064 433 0 385 5 1 4 4 0 8 0 procpl 672 473 0 411 7 0 7 7 0 8 1 sockpl 480 122 0 98 4 0 4 4 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 159 0 0 19 0 19 19 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 292 0 0 18 0 18 18 0 8 0 bufpl 288 3591 0 135 247 0 247 247 0 8 0 anonpl 24 67441 0 56025 76 1 75 75 0 186 1 amapchunkpl 152 7013 0 6321 31 1 30 30 0 158 0 amappl16 200 466 0 219 15 1 14 14 0 8 0 amappl15 192 107 0 99 1 0 1 1 0 8 0 amappl14 184 14 0 12 1 0 1 1 0 8 0 amappl13 176 84 0 77 1 0 1 1 0 8 0 amappl12 168 11 0 11 1 1 0 1 0 8 0 amappl11 160 60 0 44 1 0 1 1 0 8 0 amappl10 152 41 0 35 1 0 1 1 0 8 0 amappl9 144 478 0 475 1 0 1 1 0 8 0 amappl8 136 567 0 522 2 0 2 2 0 8 0 amappl7 128 135 0 121 1 0 1 1 0 8 0 amappl6 120 195 0 174 2 0 2 2 0 8 1 amappl5 112 216 0 199 1 0 1 1 0 8 0 amappl4 104 805 0 777 2 0 2 2 0 8 1 amappl3 96 168 0 157 1 0 1 1 0 8 0 amappl2 88 530 0 484 3 0 3 3 0 8 1 amappl1 80 10781 0 10192 18 1 17 18 0 8 3 amappl 88 2848 0 2627 6 0 6 6 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 419 0 385 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 419 0 385 1 0 1 1 0 8 0 vmmpekpl 168 7966 0 7918 3 0 3 3 0 8 0 vmmpepl 168 41095 0 38872 114 0 114 114 0 357 7 vmsppl 368 418 0 385 4 0 4 4 0 8 0 rwobjpl 56 12646 0 9880 41 0 41 41 0 8 0 pdppl 4096 845 0 770 115 22 93 93 0 8 18 pvpl 32 250819 0 234810 254 0 254 254 0 265 116 pmappl 248 418 0 385 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 636 0 25 18 0 18 18 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff829baff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 intr_handler(ffff800027abc760,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff829de780) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800027abc8b0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x19 pmap_enter(fffffd806c81b3e0,56055772000,72398000,3,21) at pmap_enter+0x98c pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:433 [inline] pmap_enter(fffffd806c81b3e0,56055772000,72398000,3,21) at pmap_enter+0x98c sys/arch/amd64/amd64/pmap.c:2873 uvm_fault_lower(ffff800027abcc80,ffff800027abccb8,ffff800027abcc00,0) at uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1496 uvm_fault(fffffd806ab34748,56055772000,0,1) at uvm_fault+0x248 upageflttrap(ffff800027abcdf0,56055772bd0) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800027abcdf0) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffda090, count: -16 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(fffffd806ab341a0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd806ab341a0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd806ab34190) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800028ec7e20,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff800028ec7e20,ffff800028ec7e58,ffff800028ec7e80) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd806ab34188,20000000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff800028ec7fb0,20000300) at kpageflttrap+0x209 kerntrap(ffff800028ec7fb0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 ifioctl_get(c0106924,ffff800028ec8260) at ifioctl_get+0x2dd soo_ioctl(fffffd807abfa390,c0106924,ffff800028ec8260,ffff800021202008) at soo_ioctl+0x26c sys_ioctl(ffff800021202008,ffff800028ec8378,ffff800028ec83d0) at sys_ioctl+0x4a2 syscall(ffff800028ec8440) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800028ec8440) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8aca538d880, count: -15