login: witness: lock order reversal: 1st 0xffffffff8290fe50 netlock (netlock) 2nd 0xfffffd8066fe15f0 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 fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:301 #11 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #12 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 #13 sys_ioctl+0x4a2 #14 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #15 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(fffffd8066fe15f0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8066fe15f0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8066fe15e0) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37feb0,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37feb0,ffff80002e37fee8,ffff80002e37ff10) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8066fe15d8,2000c000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e380040,2000cfde) at kpageflttrap+0x209 kerntrap(ffff80002e380040) 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,ffff80002e380590) at ifioctl_get+0x2dd soo_ioctl(ffff80002e3802f0,c0106924,ffff80002e380590,ffff8000211fea80) at soo_ioctl+0x26c fifo_ioctl(ffff80002e3803d8) at fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:301 VOP_IOCTL(fffffd8068dda220,c0106924,ffff80002e380590,3,fffffd807f7d8480,ffff8000211fea80) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80683c6428,c0106924,ffff80002e380590,ffff8000211fea80) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000211fea80,ffff80002e3806a8,ffff80002e380700) at sys_ioctl+0x4a2 syscall(ffff80002e380770) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e380770) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b8ec76a4f0, count: -18 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff80002e37fba0 rbx 0x3 rdx 0xffff800000be0300 rcx 0 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffff80002e37fb10 r9 0x8080808080808080 r10 0xd1a1ad4c31724027 r11 0xa682032287e106d4 r12 0xffffffff82ab0590 w_lodata+0x52c20 r13 0 r14 0xffffffff82aab680 w_lodata+0x4dd10 r15 0xfffffd8002f62d80 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e37fb90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=390651 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000211fed20,0xffffffff82b3d400 process=0xffff8000fffed0c0 user=0xffff80002e37b000, vmspace=0xfffffd8066fe15d8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89857 382639 11668 32767 7 0x10 syz-executor.7 17483 323753 37712 32767 2 0x10 syz-executor.2 90936 96827 73533 32767 2 0x10 syz-executor.5 *90936 390651 73533 32767 7 0x4000010 syz-executor.5 39996 483961 575 32767 2 0x10 syz-executor.3 39996 183302 575 32767 3 0x4000090 fsleep syz-executor.3 38072 56083 3750 32767 2 0x10 syz-executor.0 38072 440841 3750 32767 3 0x4000090 msgwait syz-executor.0 64024 17637 62700 32767 3 0x90 nanoslp syz-executor.6 64024 499468 62700 32767 3 0x4000090 semwait syz-executor.6 64024 164466 62700 32767 3 0x4000090 fsleep syz-executor.6 11668 157064 83479 32767 3 0x90 nanoslp syz-executor.7 62700 84690 9197 32767 3 0x90 nanoslp syz-executor.6 73533 257800 87178 32767 3 0x90 nanoslp syz-executor.5 83479 147993 741 0 3 0x82 wait syz-executor.7 575 64709 65081 32767 3 0x90 nanoslp syz-executor.3 12866 80132 18113 32767 3 0x10 biowait syz-executor.4 9197 310422 741 0 3 0x82 wait syz-executor.6 87178 465136 741 0 3 0x82 wait syz-executor.5 37712 172571 45967 32767 3 0x90 nanoslp syz-executor.2 18113 191275 741 0 3 0x82 wait syz-executor.4 65081 439866 741 0 3 0x82 wait syz-executor.3 3750 276504 61200 32767 3 0x90 nanoslp syz-executor.0 8760 162684 76534 32767 3 0x90 piperd syz-executor.1 45967 467359 741 0 3 0x82 wait syz-executor.2 76534 437492 741 0 3 0x82 wait syz-executor.1 61200 202281 741 0 3 0x82 wait syz-executor.0 741 510084 71036 0 3 0x82 thrsleep syz-fuzzer 741 7801 71036 0 3 0x4000082 nanoslp syz-fuzzer 741 191526 71036 0 3 0x4000082 thrsleep syz-fuzzer 741 383169 71036 0 3 0x4000082 thrsleep syz-fuzzer 741 399688 71036 0 3 0x4000082 thrsleep syz-fuzzer 741 113670 71036 0 3 0x4000082 thrsleep syz-fuzzer 741 134104 71036 0 3 0x4000082 thrsleep syz-fuzzer 741 61830 71036 0 3 0x4000082 kqread syz-fuzzer 741 513761 71036 0 3 0x4000082 thrsleep syz-fuzzer 71036 483166 14087 0 3 0x10008a sigsusp ksh 14087 403458 51328 0 3 0x9a kqread sshd 99232 115606 1 0 3 0x100083 ttyin getty 51328 331942 1 0 3 0x88 kqread sshd 88133 375085 78961 73 3 0x1100090 kqread syslogd 78961 461200 1 0 3 0x100082 netio syslogd 8327 518978 1 0 3 0x100080 kqread resolvd 54566 47846 86589 77 3 0x100092 kqread dhcpleased 13288 456072 86589 77 3 0x100092 kqread dhcpleased 86589 430472 1 0 3 0x80 kqread dhcpleased 96159 130510 0 0 3 0x14200 bored smr 32753 272770 0 0 2 0x14200 zerothread 9948 145478 0 0 3 0x14200 aiodoned aiodoned 14798 120926 0 0 3 0x14200 syncer update 9480 224607 0 0 3 0x14200 cleaner cleaner 98744 149425 0 0 3 0x14200 reaper reaper 94590 48204 0 0 3 0x14200 pgdaemon pagedaemon 15885 185246 0 0 3 0x14200 bored viomb 49354 438292 0 0 3 0x40014200 acpi0 acpi0 23401 87854 0 0 3 0x40014200 idle1 32712 294511 0 0 3 0x14200 bored softnet 27172 156365 0 0 3 0x14200 bored systqmp 53079 250597 0 0 3 0x14200 bored systq 15782 457776 0 0 3 0x40014200 bored softclock 87902 243841 0 0 3 0x40014200 idle0 1 33195 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 90936 (syz-executor.5) thread 0xffff8000211fea80 (390651) shared rwlock netlock r = 0 (0xffffffff8290fe50) #0 witness_lock+0x44d #1 ifioctl_get+0x2d5 sys/net/if.c:2319 #2 soo_ioctl+0x26c #3 fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:301 #4 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #5 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 #6 sys_ioctl+0x4a2 #7 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff829de988) #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 12866 (syz-executor.4) thread 0xffff8000ffff47e8 (80132) exclusive rrwlock inode r = 0 (0xfffffd8066698708) #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 (0xfffffd80714e9e70) #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 240 6K 7K 78643K 359 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 12K 78643K 1 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 1287 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 12 0K 0K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 121K 78643K 307 0 proc 56 74K 99K 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 ip_moptions 0 0K 0K 78643K 10 0 in_multi 99 6K 6K 78643K 103 0 ether_multi 1 0K 0K 78643K 3 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 604 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 296 79K 80K 78643K 4964 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 16 0 NDP 11 0K 2K 78643K 27 0 temp 94 4695K 4759K 78643K 4576 0 kqueue 12 18K 22K 78643K 40 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 50 0 47 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 136 100 0 84 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpqe 32 471 0 471 1 0 1 1 0 8 1 tcpcb 736 46 0 26 2 0 2 2 0 8 0 arp 120 19 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 304 132 0 123 2 0 2 2 0 8 1 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 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 12 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1661 0 232 90 0 90 90 0 8 0 ffsino 272 1661 0 232 96 0 96 96 0 8 0 nchpl 144 2098 0 438 62 0 62 62 0 8 0 uvmvnodes 80 1774 0 0 37 0 37 37 0 8 0 vnodes 224 1774 0 0 105 0 105 105 0 8 0 namei 1024 6585 0 6584 2 0 2 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 6548 0 6547 4 1 3 3 0 8 2 plimitpl 152 42 0 20 1 0 1 1 0 8 0 sigapl 424 581 0 532 7 0 7 7 0 8 1 futexpl 64 850 0 848 1 0 1 1 0 8 0 knotepl 120 114 0 0 4 0 4 4 0 8 0 kqueuepl 216 41 0 33 1 0 1 1 0 8 0 pipepl 336 130 0 101 3 0 3 3 0 8 0 fdescpl 496 567 0 532 7 1 6 6 0 8 1 filepl 152 1920 0 1682 11 1 10 10 0 8 0 lockfpl 104 11 0 9 1 0 1 1 0 8 0 lockfspl 48 6 0 4 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 8 1 0 1 1 0 8 0 ucredpl 96 148 0 130 1 0 1 1 0 8 0 zombiepl 144 532 0 532 1 0 1 1 0 8 1 processpl 1064 581 0 532 5 1 4 4 0 8 0 procpl 672 770 0 708 6 0 6 6 0 8 0 sockpl 480 282 0 255 5 0 5 5 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 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 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 166 0 0 20 0 20 20 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 454 0 0 29 1 28 29 0 8 0 bufpl 288 3884 0 139 268 0 268 268 0 8 0 anonpl 24 110215 0 98522 94 1 93 93 0 186 11 amapchunkpl 152 11174 0 10450 36 1 35 35 0 158 3 amappl16 200 981 0 704 24 1 23 23 0 8 8 amappl15 192 165 0 158 1 0 1 1 0 8 0 amappl14 184 46 0 41 1 0 1 1 0 8 0 amappl13 176 114 0 110 1 0 1 1 0 8 0 amappl12 168 69 0 60 1 0 1 1 0 8 0 amappl11 160 45 0 34 1 0 1 1 0 8 0 amappl10 152 36 0 33 1 0 1 1 0 8 0 amappl9 144 501 0 493 1 0 1 1 0 8 0 amappl8 136 547 0 506 2 0 2 2 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 247 0 220 2 0 2 2 0 8 1 amappl5 112 319 0 301 1 0 1 1 0 8 0 amappl4 104 801 0 775 2 0 2 2 0 8 1 amappl3 96 254 0 232 1 0 1 1 0 8 0 amappl2 88 561 0 512 3 0 3 3 0 8 1 amappl1 80 12939 0 12325 18 1 17 18 0 8 3 amappl 88 4544 0 4307 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 567 0 532 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 567 0 532 1 0 1 1 0 8 0 vmmpekpl 168 8511 0 8461 3 0 3 3 0 8 0 vmmpepl 168 53864 0 51416 119 0 119 119 0 357 10 vmsppl 368 566 0 532 4 0 4 4 0 8 0 rwobjpl 56 15464 0 12502 43 0 43 43 0 8 0 pdppl 4096 1141 0 1064 105 24 81 93 0 8 4 pvpl 32 319322 0 302596 262 3 259 260 0 265 114 pmappl 248 566 0 532 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 659 0 27 19 0 19 19 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+0x40 sys/dev/kcov.c:154 intr_handler(ffff800029103c70,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 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(ffff800029103dd0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x34 sys/dev/kcov.c:154 __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 syscall(ffff800029103fb0) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800029103fb0) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2960, count: -14 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(fffffd8066fe15f0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8066fe15f0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8066fe15e0) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37feb0,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37feb0,ffff80002e37fee8,ffff80002e37ff10) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8066fe15d8,2000c000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e380040,2000cfde) at kpageflttrap+0x209 kerntrap(ffff80002e380040) 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,ffff80002e380590) at ifioctl_get+0x2dd soo_ioctl(ffff80002e3802f0,c0106924,ffff80002e380590,ffff8000211fea80) at soo_ioctl+0x26c fifo_ioctl(ffff80002e3803d8) at fifo_ioctl+0x9c sys/miscfs/fifofs/fifo_vnops.c:301 VOP_IOCTL(fffffd8068dda220,c0106924,ffff80002e380590,3,fffffd807f7d8480,ffff8000211fea80) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80683c6428,c0106924,ffff80002e380590,ffff8000211fea80) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000211fea80,ffff80002e3806a8,ffff80002e380700) at sys_ioctl+0x4a2 syscall(ffff80002e380770) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e380770) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b8ec76a4f0, count: -18