*cpu1: uvm_fault(0xfffffd80661ca400, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7c98bd6f4a10, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4d1e10 rbx 0 rdx 0 rcx 0xffff8000fffe7ca8 rax 0x2a r8 0xffff80003c4d1d40 r9 0x4 r10 0xd96c981598a8d16b r11 0x8902ef00b6b743ab r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81cd84c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4d1d90 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=465348 pid=7676 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe6a80,0xffffffff839fa210 process=0xffff80003c4b2b78 user=0xffff80003c4cc000, vmspace=0xfffffd80661caba0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 7676 465348 50466 0 7 0 syz-executor 29724 81860 72454 0 2 0 syz-executor 84172 430818 65945 0 2 0 syz-executor 84172 48517 65945 0 2 0x4000000 syz-executor 25856 347179 98690 0 2 0 syz-executor 25856 433156 98690 0 3 0x4000080 fsleep syz-executor 25856 356444 98690 0 3 0x4000080 fsleep syz-executor 75746 9187 16110 0 2 0 syz-executor 75746 56052 16110 0 3 0x4000080 ttyin syz-executor 75746 463111 16110 0 3 0x4000080 fsleep syz-executor 13973 153109 67610 0 3 0x3000 suspend syz-executor 13973 292048 67610 0 3 0x4081000 biowait syz-executor 50466 280719 53058 0 3 0x82 nanoslp syz-executor 67610 47625 53058 0 2 0x2 syz-executor 53677 231530 0 0 3 0x14280 nfsidl nfsio 87540 422422 0 0 3 0x14280 nfsidl nfsio 16614 31142 0 0 3 0x14280 nfsidl nfsio 44483 338703 0 0 3 0x14280 nfsidl nfsio 99009 291115 0 0 3 0x14280 nfsidl nfsio 66727 76034 0 0 3 0x14280 nfsidl nfsio 99438 144358 0 0 3 0x14280 nfsidl nfsio 65888 314411 0 0 3 0x14280 nfsidl nfsio 97439 143532 0 0 3 0x14280 nfsidl nfsio 42070 212658 0 0 3 0x14280 nfsidl nfsio 99656 254406 0 0 3 0x14280 nfsidl nfsio 55343 461395 0 0 3 0x14280 nfsidl nfsio 81757 292924 0 0 3 0x14280 nfsidl nfsio 41374 468720 0 0 3 0x14280 nfsidl nfsio 47768 98876 0 0 3 0x14280 nfsidl nfsio 54874 205595 0 0 3 0x14280 nfsidl nfsio 45668 194949 0 0 3 0x14280 nfsidl nfsio 40123 13556 0 0 3 0x14280 nfsidl nfsio 31166 96155 0 0 3 0x14280 nfsidl nfsio 18590 82101 0 0 3 0x14280 nfsidl nfsio 57956 432197 53058 0 3 0x82 nanoslp syz-executor 98690 498130 53058 0 3 0x82 nanoslp syz-executor 72454 344199 53058 0 3 0x82 nanoslp syz-executor 65945 263317 53058 0 3 0x82 nanoslp syz-executor 16110 272060 53058 0 3 0x82 nanoslp syz-executor 65064 454757 53058 0 3 0x82 nanoslp syz-executor 53058 471169 58279 0 2 0x2 syz-executor 58279 404524 69825 0 3 0x10008a sigsusp ksh 69825 305646 18491 0 3 0x98 kqread sshd-session 18491 353080 83324 0 3 0x92 kqread sshd-session 98984 346937 1 0 3 0x100083 ttyopn getty 83324 153229 1 0 3 0x88 kqread sshd 62583 142131 32176 74 3 0x1100092 bpf pflogd 32176 31374 1 0 3 0x80 sbwait pflogd 40292 287946 30674 73 3 0x1100090 kqread syslogd 30674 355344 1 0 3 0x100082 sbwait syslogd 95447 179844 1 0 3 0x100080 kqread resolvd 52557 240294 80445 77 3 0x100092 kqread dhcpleased 71932 121936 80445 77 3 0x100092 kqread dhcpleased 80445 414381 1 0 3 0x80 kqread dhcpleased 39292 234185 0 0 3 0x14200 bored smr 15559 477066 0 0 3 0x14200 pgzero zerothread 93575 228178 0 0 3 0x14200 aiodoned aiodoned 84324 309563 0 0 3 0x14200 syncer update 33030 71114 0 0 3 0x14200 cleaner cleaner 55784 44234 0 0 3 0x14200 reaper reaper 71904 506003 0 0 3 0x14200 pgdaemon pagedaemon 16482 230044 0 0 3 0x14200 bored viomb 88121 3516 0 0 3 0x40014200 acpi0 acpi0 34559 366056 0 0 3 0x40014200 idle1 54430 342709 0 0 3 0x14200 bored softnet1 57557 323433 0 0 3 0x14200 bored softnet0 13251 72251 0 0 3 0x14200 bored systqmp 64139 520753 0 0 3 0x14200 bored systq 28813 431851 0 0 3 0x14200 tmoslp softclockmp 98401 117799 0 0 3 0x40014200 tmoslp softclock 84817 358622 0 0 3 0x40014200 idle0 1 193779 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd80089623e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x83a pmap_enter_pv sys/arch/amd64/amd64/pmap.c:1094 [inline] #2 pmap_enter+0x83a sys/arch/amd64/amd64/pmap.c:2878 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #8 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c81bd10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #8 recall_trap+0x8 Process 7676 (syz-executor) thread 0xffff8000fffe7ca8 (465348) shared rwlock uobjlk r = 0 (0xfffffd807061f908) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1204 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd80661caca0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd80089623e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x83a pmap_enter_pv sys/arch/amd64/amd64/pmap.c:1094 [inline] #2 pmap_enter+0x83a sys/arch/amd64/amd64/pmap.c:2878 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #8 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c81bd10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #8 recall_trap+0x8 Process 13973 (syz-executor) thread 0xffff80003c408fc0 (292048) exclusive rrwlock inode r = 0 (0xfffffd807f980110) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11104 12288K 13079K 166960K 13532 0 pcb 17 13K 14K 166960K 224 0 rtable 224 9K 9K 166960K 769 0 pf 33 17K 18K 166960K 102 0 ifaddr 37 6K 7K 166960K 89 0 ifgroup 52 2K 2K 166960K 131 0 sysctl 4 1K 9K 166960K 11 0 counters 70 37K 37K 166960K 158 0 ioctlops 0 0K 4K 166960K 1755 0 iov 0 0K 18K 166960K 88 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1454 91K 92K 166960K 2381 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 45 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 179K 240K 166960K 1043 0 sigio 0 0K 0K 166960K 18 0 proc 72 115K 147K 166960K 698 0 subproc 72 4K 4K 166960K 91 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 140 0 in_multi 78 5K 7K 166960K 167 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 531 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 167K 183K 166960K 11361 0 UVM aobj 31 8K 8K 166960K 34 0 pinsyscall 43 86K 105K 166960K 2279 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 81 0 NDP 12 0K 2K 166960K 63 0 temp 59 8679K 8747K 166960K 40191 0 kqueue 14 22K 28K 166960K 195 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 95 0 90 1 0 1 1 0 8 0 rtentry 176 279 0 188 6 0 6 6 0 8 0 unpcb 144 965 0 946 9 3 6 6 0 8 5 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 456 0 450 7 0 7 7 0 8 6 arp 136 88 0 74 1 0 1 1 0 8 0 inpcb 328 1243 0 1233 7 0 7 7 0 8 5 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 152 33 0 14 2 0 2 2 0 8 0 pkpcb 40 5 0 5 2 2 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 38 0 38 2 1 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 13 0 2 1 0 1 1 0 482 0 pffrnode 88 12 0 2 1 0 1 1 0 8 0 pffrent 40 41 0 30 1 0 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 rttmr 136 5 0 5 3 2 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 760 0 382 31 5 26 31 0 8 0 art_table 40 763 0 382 6 1 5 6 0 8 0 art_node 32 278 0 197 2 0 2 2 0 8 0 sysvmsgpl 40 8 0 6 2 1 1 1 0 8 0 semapl 112 38 0 28 1 0 1 1 0 8 0 shmpl 112 27 0 2 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 3439 0 1933 96 0 96 96 0 8 0 ffsino 296 3439 0 1933 117 0 117 117 0 8 0 nchpl 144 4874 0 3169 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 4034 0 0 225 0 225 225 0 8 0 namei 1024 17585 0 17585 2 1 1 2 0 8 1 percpumem 16 94 0 44 1 0 1 1 0 8 0 vcpupl 3968 3 0 0 1 0 1 1 0 8 0 vmpool 848 4 0 1 1 0 1 1 0 8 0 kstatmem 264 88 0 60 3 0 3 3 0 8 0 scsiplug 72 5 0 5 3 3 0 1 0 8 0 scxspl 216 29972 0 29971 10 7 3 8 1 8 2 plimitpl 152 402 0 382 1 0 1 1 0 8 0 sigapl 424 1374 0 1306 8 0 8 8 0 8 0 knotepl 120 522 0 0 16 0 16 16 0 8 0 kqueuepl 224 370 0 360 6 5 1 5 0 8 0 pipepl 344 201 0 172 3 0 3 3 0 8 0 fdescpl 528 1337 0 1305 3 0 3 3 0 8 0 filepl 160 9119 0 8882 18 3 15 15 0 8 3 lockfpl 104 432 0 430 2 1 1 2 0 8 0 lockfspl 48 190 0 188 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 64 0 47 1 0 1 1 0 8 0 ucredpl 104 1583 0 1570 1 0 1 1 0 8 0 zombiepl 144 1309 0 1306 1 0 1 1 0 8 0 processpl 1232 1374 0 1306 6 0 6 6 0 8 0 procpl 664 2944 0 2870 8 1 7 8 0 8 0 sosppl 176 9 0 9 2 1 1 1 0 8 1 sockpl 752 2341 0 2307 20 8 12 17 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 37 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1893 0 0 118 0 118 118 0 8 0 bufpl 280 12461 0 6325 439 0 439 439 0 8 0 anonpl 32 11890 0 0 96 0 96 96 0 246 0 amapchunkpl 152 50246 0 49692 37 10 27 36 0 158 3 amappl16 200 5109 0 5043 50 35 15 27 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 20 0 20 2 2 0 1 0 8 0 amappl13 176 463 0 462 1 0 1 1 0 8 0 amappl12 168 1733 0 1692 3 0 3 3 0 8 0 amappl11 160 26 0 26 1 1 0 1 0 8 0 amappl10 152 134 0 120 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 68 0 66 1 0 1 1 0 8 0 amappl7 128 166 0 165 1 0 1 1 0 8 0 amappl6 120 318 0 305 1 0 1 1 0 8 0 amappl5 112 86 0 75 1 0 1 1 0 8 0 amappl4 104 476 0 444 1 0 1 1 0 8 0 amappl3 96 6510 0 6416 4 1 3 3 0 8 0 amappl2 88 1502 0 1427 2 0 2 2 0 8 0 amappl1 80 14859 0 14262 16 1 15 15 0 8 1 amappl 88 10389 0 10225 5 0 5 5 0 92 0 uvmvnodes 80 133 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 3 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 33 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1337 0 1305 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1337 0 1305 1 0 1 1 0 8 0 vmmpekpl 168 12665 0 12618 3 0 3 3 0 8 0 vmmpepl 168 93971 0 91966 111 11 100 109 0 357 7 vmsppl 488 1336 0 1305 7 2 5 5 0 8 0 rwobjpl 80 28168 0 27036 32 1 31 32 0 8 0 pdppl 4096 2690 0 2615 120 45 75 86 0 8 0 pvpl 32 19479 0 0 159 1 158 158 0 265 0 pmappl 256 1340 0 1306 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 414 0 57 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7c98bd6f4a10, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,65) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,65) at comcnputc+0xd0 sys/dev/ic/com.c:1259 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83354a15) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83417d35) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c43d5f0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c43d5f0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001684000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 end trace frame: 0xffff80003c43d720, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,65) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,65) at comcnputc+0xd0 sys/dev/ic/com.c:1259 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83354a15) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83417d35) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c43d5f0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c43d5f0) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001684000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(31e5f,81,2000,ffff80003c3f47f0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c3f47f0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c43d7a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807734acb0,81,fffffd80097fd410,ffff80003c3f47f0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068cf0238,ffff80003c3f47f0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068cf0238,ffff80003c3f47f0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068cf0238,ffff80003c3f47f0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068cf0238,ffff80003c3f47f0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c3f47f0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c3f47f0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c3f47f0,ffff80003c43db10,ffff80003c43da60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43db10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43db10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e9353ce1e10, count: -25