login: witness: lock order reversal: 1st 0xffffffff8290fe50 netlock (netlock) 2nd 0xfffffd8067dbba40 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(fffffd8067dbba40,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8067dbba40,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8067dbba30) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e3c1530,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e3c1530,ffff80002e3c1568,ffff80002e3c1590) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8067dbba28,20000000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e3c16c0,20000300) at kpageflttrap+0x209 kerntrap(ffff80002e3c16c0) 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,ffff80002e3c1970) at ifioctl_get+0x2dd soo_ioctl(fffffd80767d7a20,c0106924,ffff80002e3c1970,ffff8000211427e8) at soo_ioctl+0x26c sys_ioctl(ffff8000211427e8,ffff80002e3c1a88,ffff80002e3c1ae0) at sys_ioctl+0x4a2 syscall(ffff80002e3c1b50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3c1b50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41c20e11680, count: -15 ddb{1}> show registers rdi 0x3 rsi 0xffffffff8294abb0 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e3c1220 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000211427e8 r8 0xffff80002e3c1190 r9 0x8080808080808080 r10 0x796fae1e1ed21545 r11 0xa048eac25c0ba33c r12 0xffffffff82ab0850 w_lodata+0x52ee0 r13 0 r14 0xffffffff82aab260 w_lodata+0x4d8f0 r15 0xfffffd8002f62d80 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e3c1210 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=13244 stat=onproc flags process=10 proc=4000000 pri=59, usrpri=59, nice=20 forw=0xffffffffffffffff, list=0xffff80002c964550,0xffff80002e3ba2b0 process=0xffff800029532158 user=0xffff80002e3bc000, vmspace=0xfffffd8067dbba28 estcpu=9, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56374 356835 0 0 3 0x14200 bored sosplice 75039 220367 96344 32767 2 0x10 syz-executor.0 75039 523397 96344 32767 3 0x4000090 fsleep syz-executor.0 75039 260892 96344 32767 3 0x4000090 fsleep syz-executor.0 75039 61032 96344 32767 3 0x4000090 fsleep syz-executor.0 75039 186385 96344 32767 2 0x4000010 syz-executor.0 75039 151404 96344 32767 2 0x4000010 syz-executor.0 82305 148676 84477 32767 2 0x10 syz-executor.4 82305 307919 84477 32767 3 0x4000090 fsleep syz-executor.4 14123 209049 26646 32767 3 0x90 nanoslp syz-executor.6 14123 462780 26646 32767 3 0x4000090 kqread syz-executor.6 14123 60973 26646 32767 3 0x4000090 fsleep syz-executor.6 97805 73646 20582 32767 3 0x90 nanoslp syz-executor.3 97805 197104 20582 32767 3 0x4000090 netcon syz-executor.3 97805 362445 20582 32767 3 0x4000090 fsleep syz-executor.3 41179 33583 43861 32767 2 0x10 syz-executor.5 95511 477919 36621 32767 2 0x10 syz-executor.2 45147 141960 51403 32767 7 0x10 syz-executor.1 45147 31849 51403 32767 2 0x4000090 syz-executor.1 45147 36500 51403 32767 2 0x4000010 syz-executor.1 *45147 13244 51403 32767 7 0x4000010 syz-executor.1 45147 143264 51403 32767 2 0x4000010 syz-executor.1 39964 365624 45026 32767 3 0x10 biowait syz-executor.7 45026 131364 15271 0 3 0x82 wait syz-executor.7 43861 283164 25782 32767 2 0x10 syz-executor.5 26646 50957 52342 32767 3 0x90 nanoslp syz-executor.6 84477 403138 51710 32767 3 0x90 nanoslp syz-executor.4 52342 440332 15271 0 3 0x82 wait syz-executor.6 20582 392896 14665 32767 3 0x90 nanoslp syz-executor.3 51710 70283 15271 0 3 0x82 wait syz-executor.4 36621 322094 47014 32767 3 0x90 nanoslp syz-executor.2 25782 441313 15271 0 3 0x82 wait syz-executor.5 14665 413143 15271 0 3 0x82 wait syz-executor.3 51403 261034 32815 32767 3 0x90 nanoslp syz-executor.1 32815 357971 15271 0 3 0x82 wait syz-executor.1 47014 36035 15271 0 3 0x82 wait syz-executor.2 96344 399374 3641 32767 3 0x90 nanoslp syz-executor.0 3641 319206 15271 0 3 0x82 wait syz-executor.0 15271 393707 66335 0 3 0x82 nanoslp syz-fuzzer 15271 121561 66335 0 3 0x4000082 nanoslp syz-fuzzer 15271 47800 66335 0 3 0x4000082 kqread syz-fuzzer 15271 380561 66335 0 3 0x4000082 thrsleep syz-fuzzer 15271 103693 66335 0 3 0x4000082 thrsleep syz-fuzzer 15271 315797 66335 0 3 0x4000082 thrsleep syz-fuzzer 15271 29889 66335 0 3 0x4000082 thrsleep syz-fuzzer 15271 75792 66335 0 3 0x4000082 thrsleep syz-fuzzer 15271 461033 66335 0 3 0x4000082 thrsleep syz-fuzzer 66335 388178 65614 0 3 0x10008a sigsusp ksh 65614 242630 38010 0 3 0x9a kqread sshd 72211 120981 1 0 3 0x100083 ttyin getty 38010 249256 1 0 3 0x88 kqread sshd 42173 285801 65978 73 3 0x1100090 kqread syslogd 65978 179066 1 0 3 0x100082 netio syslogd 76322 350036 1 0 3 0x100080 kqread resolvd 7530 227086 90476 77 3 0x100092 kqread dhcpleased 56435 169628 90476 77 3 0x100092 kqread dhcpleased 90476 335056 1 0 3 0x80 kqread dhcpleased 62712 363868 0 0 3 0x14200 bored smr 18212 440901 0 0 2 0x14200 zerothread 57850 325872 0 0 3 0x14200 aiodoned aiodoned 35581 280388 0 0 3 0x14200 syncer update 36402 33006 0 0 3 0x14200 cleaner cleaner 25505 135085 0 0 3 0x14200 reaper reaper 5459 333229 0 0 3 0x14200 pgdaemon pagedaemon 13030 303723 0 0 3 0x14200 bored viomb 47071 511377 0 0 3 0x40014200 acpi0 acpi0 1767 66848 0 0 3 0x40014200 idle1 68528 482346 0 0 3 0x14200 bored softnet 54033 438613 0 0 3 0x14200 bored systqmp 44113 288654 0 0 3 0x14200 bored systq 60578 342674 0 0 3 0x40014200 bored softclock 2852 311849 0 0 3 0x40014200 idle0 1 335761 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 45147 (syz-executor.1) thread 0xffff8000211427e8 (13244) 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 39964 (syz-executor.7) thread 0xffff80002c965cf0 (365624) exclusive rrwlock inode r = 0 (0xfffffd80760270a8) #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 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #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 exclusive rrwlock inode r = 0 (0xfffffd80670aa0a0) #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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #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 10172 6407K 6419K 78643K 11262 0 pcb 13 8K 8K 78643K 13 0 rtable 238 6K 7K 78643K 348 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 6 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 1294 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 7 0K 0K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 121K 78643K 205 0 proc 56 74K 99K 78643K 451 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 32 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 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 609 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 303 78K 79K 78643K 3829 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 2K 78643K 27 0 temp 89 4694K 4758K 78643K 4317 0 kqueue 13 20K 20K 78643K 24 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 35 0 31 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 136 45 0 32 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 736 182 0 92 9 0 9 9 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 304 239 0 159 7 0 7 7 0 8 0 nd6 48 24 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 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 8 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1549 0 120 90 0 90 90 0 8 0 ffsino 272 1549 0 120 96 0 96 96 0 8 0 nchpl 144 1882 0 223 62 0 62 62 0 8 0 uvmvnodes 80 1662 0 0 34 0 34 34 0 8 0 vnodes 224 1662 0 0 98 0 98 98 0 8 0 namei 1024 6348 0 6348 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 5912 0 5911 9 1 8 8 0 8 7 plimitpl 152 30 0 8 1 0 1 1 0 8 0 sigapl 424 480 0 429 7 0 7 7 0 8 1 futexpl 64 782 0 776 1 0 1 1 0 8 0 knotepl 120 112 0 0 4 0 4 4 0 8 0 kqueuepl 216 64 0 54 3 2 1 3 0 8 0 pipepl 336 207 0 178 8 0 8 8 0 8 5 fdescpl 496 465 0 429 6 0 6 6 0 8 1 filepl 152 2257 0 1946 16 1 15 15 0 8 2 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 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 96 157 0 139 1 0 1 1 0 8 0 zombiepl 144 429 0 429 1 0 1 1 0 8 1 processpl 1064 480 0 429 4 0 4 4 0 8 0 procpl 672 633 0 560 7 0 7 7 0 8 0 sockpl 480 319 0 222 14 1 13 13 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 142 0 0 17 0 17 17 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 322 0 0 20 0 20 20 0 8 0 bufpl 288 3655 0 143 251 0 251 251 0 8 0 anonpl 24 81278 0 68018 83 1 82 82 0 186 2 amapchunkpl 152 8565 0 7800 32 0 32 32 0 158 2 amappl16 200 708 0 351 19 0 19 19 0 8 0 amappl15 192 133 0 123 1 0 1 1 0 8 0 amappl14 184 35 0 28 1 0 1 1 0 8 0 amappl13 176 104 0 98 1 0 1 1 0 8 0 amappl12 168 31 0 27 2 1 1 1 0 8 0 amappl11 160 47 0 36 1 0 1 1 0 8 0 amappl10 152 53 0 47 1 0 1 1 0 8 0 amappl9 144 476 0 473 1 0 1 1 0 8 0 amappl8 136 546 0 508 2 0 2 2 0 8 0 amappl7 128 130 0 117 1 0 1 1 0 8 0 amappl6 120 198 0 178 2 1 1 2 0 8 0 amappl5 112 264 0 241 1 0 1 1 0 8 0 amappl4 104 801 0 775 2 1 1 2 0 8 0 amappl3 96 199 0 181 1 0 1 1 0 8 0 amappl2 88 522 0 477 3 1 2 3 0 8 0 amappl1 80 11438 0 10792 18 3 15 18 0 8 0 amappl 88 3425 0 3174 7 0 7 7 0 92 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 465 0 429 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 465 0 429 1 0 1 1 0 8 0 vmmpekpl 168 8634 0 8581 3 0 3 3 0 8 0 vmmpepl 168 45414 0 42786 122 3 119 121 0 357 2 vmsppl 368 464 0 429 4 0 4 4 0 8 0 rwobjpl 56 13583 0 10629 43 1 42 43 0 8 0 pdppl 4096 937 0 858 111 30 81 93 0 8 2 pvpl 32 273614 0 255116 258 9 249 258 0 265 99 pmappl 248 464 0 429 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 648 0 33 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+0x16 kd_curproc sys/dev/kcov.c:574 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x16 sys/dev/kcov.c:148 __mp_lock(ffffffff829de780) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800021210310,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(ffff800021210460,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_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 syscall(ffff800021210630) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800021210630) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdd740, count: -13 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(fffffd8067dbba40,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8067dbba40,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8067dbba30) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e3c1530,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e3c1530,ffff80002e3c1568,ffff80002e3c1590) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8067dbba28,20000000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e3c16c0,20000300) at kpageflttrap+0x209 kerntrap(ffff80002e3c16c0) 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,ffff80002e3c1970) at ifioctl_get+0x2dd soo_ioctl(fffffd80767d7a20,c0106924,ffff80002e3c1970,ffff8000211427e8) at soo_ioctl+0x26c sys_ioctl(ffff8000211427e8,ffff80002e3c1a88,ffff80002e3c1ae0) at sys_ioctl+0x4a2 syscall(ffff80002e3c1b50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3c1b50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41c20e11680, count: -15