*cpu1: uvm_fault(0xfffffd806bcb83e0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x79035c876f80, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a2a1290 rbx 0 rdx 0 rcx 0xffff80002a37c7e8 rax 0x2a r8 0xffff80002a2a11c0 r9 0 r10 0x5968e3c50a446e1d r11 0x982aafee97a4e36d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff810904c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a2a1210 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=5506 pid=74242 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=0xffff80002a37c2c8,0xffff80003c452558 process=0xffff80003c4d8028 user=0xffff80002a29c000, vmspace=0xfffffd806bcb85c0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *74242 5506 22596 0 7 0 syz-executor 34415 337282 34224 0 2 0 syz-executor 34415 309777 34224 0 3 0x4000080 fsleep syz-executor 24933 230703 2507 0 2 0 syz-executor 24933 130296 2507 0 3 0x4000080 nanoslp syz-executor 24933 37132 2507 0 7 0x4000000 syz-executor 24933 157791 2507 0 3 0x4000080 fsleep syz-executor 17327 138645 0 0 3 0x14200 acct acct 54817 26402 15365 0 3 0x80 nanoslp syz-executor 54817 173767 15365 0 3 0x4000080 netcon syz-executor 31554 160122 39449 0 3 0x80 nanoslp syz-executor 31554 73487 39449 0 3 0x4000080 fifor syz-executor 92005 69739 6967 0 3 0x80 nanoslp syz-executor 92005 11352 6967 0 3 0x4000080 netcon syz-executor 94720 487242 26074 0 3 0x80 nanoslp syz-executor 94720 477356 26074 0 3 0x4000080 kqread syz-executor 94720 442345 26074 0 3 0x4000080 fsleep syz-executor 34224 155450 23521 0 3 0x82 nanoslp syz-executor 22596 103418 23521 0 3 0x82 nanoslp syz-executor 2507 90650 23521 0 3 0x82 nanoslp syz-executor 53802 193004 1 0 3 0x100083 ttyin getty 26074 475912 23521 0 3 0x82 nanoslp syz-executor 55396 75226 0 0 3 0x14280 nfsidl nfsio 43206 280045 0 0 3 0x14280 nfsidl nfsio 95350 323475 0 0 3 0x14280 nfsidl nfsio 40203 34312 0 0 3 0x14280 nfsidl nfsio 28849 11738 0 0 3 0x14280 nfsidl nfsio 9777 495751 0 0 3 0x14280 nfsidl nfsio 38830 134355 0 0 3 0x14280 nfsidl nfsio 7949 125588 0 0 3 0x14280 nfsidl nfsio 60199 111682 0 0 3 0x14280 nfsidl nfsio 24910 79191 0 0 3 0x14280 nfsidl nfsio 61253 114491 0 0 3 0x14280 nfsidl nfsio 16624 436006 0 0 3 0x14280 nfsidl nfsio 20369 184038 0 0 3 0x14280 nfsidl nfsio 23845 134620 0 0 3 0x14280 nfsidl nfsio 5670 399629 0 0 3 0x14280 nfsidl nfsio 335 106391 0 0 3 0x14280 nfsidl nfsio 32785 405391 0 0 3 0x14280 nfsidl nfsio 79466 294345 0 0 3 0x14280 nfsidl nfsio 36080 76951 0 0 3 0x14280 nfsidl nfsio 23905 160653 0 0 3 0x14280 nfsidl nfsio 39449 272319 23521 0 3 0x82 nanoslp syz-executor 59095 266448 0 0 3 0x14200 bored sosplice 15365 151930 23521 0 3 0x82 nanoslp syz-executor 66392 243250 23521 0 3 0x82 wait syz-executor 6967 101376 23521 0 3 0x82 nanoslp syz-executor 23521 394439 7776 0 3 0x82 kqread syz-executor 7776 510274 13408 0 3 0x10008a sigsusp ksh 13408 356 13624 0 3 0x98 kqread sshd-session 13624 214081 63955 0 3 0x92 kqread sshd-session 63955 255818 1 0 3 0x88 kqread sshd 72970 7360 44185 74 3 0x1100092 bpf pflogd 44185 303327 1 0 3 0x80 sbwait pflogd 17963 154200 54206 73 3 0x1100090 kqread syslogd 54206 512466 1 0 3 0x100082 sbwait syslogd 38154 79312 1 0 3 0x100080 kqread resolvd 31421 399185 0 0 3 0x14200 bored smr 70647 445844 0 0 3 0x14200 pgzero zerothread 15245 133068 0 0 3 0x14200 aiodoned aiodoned 94911 176762 0 0 3 0x14200 syncer update 99404 195864 0 0 3 0x14200 cleaner cleaner 82248 238 0 0 3 0x14200 reaper reaper 59476 335703 0 0 3 0x14200 pgdaemon pagedaemon 27698 232779 0 0 3 0x14200 bored viomb 42222 445179 0 0 3 0x40014200 acpi0 acpi0 75484 402959 0 0 3 0x40014200 idle1 65016 207956 0 0 3 0x14200 bored softnet3 49974 242514 0 0 3 0x14200 bored softnet2 44483 231795 0 0 3 0x14200 bored softnet1 64230 215255 0 0 3 0x14200 bored softnet0 76873 244926 0 0 3 0x14200 bored systqmp 83723 465040 0 0 3 0x14200 bored systq 23438 250688 0 0 3 0x14200 tmoslp softclockmp 63851 374971 0 0 3 0x40014200 tmoslp softclock 15398 502233 0 0 3 0x40014200 idle0 1 177975 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bcb7510) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_upper_lookup+0x337 sys/uvm/uvm_fault.c:-1 #5 uvm_fault+0x159 sys/uvm/uvm_fault.c:682 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 74242 (syz-executor) thread 0xffff80002a37c7e8 (5506) exclusive rwlock amaplk r = 0 (0xfffffd806ec68258) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvm_fault_check+0x5ac sys/uvm/uvm_fault.c:861 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806bcb86c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1923 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bcb7510) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_upper_lookup+0x337 sys/uvm/uvm_fault.c:-1 #5 uvm_fault+0x159 sys/uvm/uvm_fault.c:682 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 24933 (syz-executor) thread 0xffff80002a37dc68 (37132) exclusive rwlock dtlk r = 0 (0xffffffff83846568) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 dt_ioctl_record_stop+0x68 sys/dev/dt/dt_dev.c:-1 #3 dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #3 dtclose+0x105 sys/dev/dt/dt_dev.c:232 #4 spec_close+0x45f sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x126 sys/kern/kern_descrip.c:1265 #8 closef+0x192 sys/kern/kern_descrip.c:1249 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8394fe90) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x126 sys/kern/kern_descrip.c:1265 #3 closef+0x192 sys/kern/kern_descrip.c:1249 #4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10334 11717K 12337K 166960K 14912 0 pcb 17 16K 18K 166960K 569 0 rtable 198 11K 12K 166960K 897 0 pf 43 19K 22K 166960K 276 0 ifaddr 39 7K 7K 166960K 150 0 ifgroup 67 2K 3K 166960K 241 0 sysctl 4 1K 1K 166960K 10 0 counters 68 36K 37K 166960K 242 0 ioctlops 0 0K 8K 166960K 2147 0 iov 0 0K 20K 166960K 169 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1546 97K 97K 166960K 3405 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 41 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 191 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2760 0 sigio 0 0K 0K 166960K 206 0 proc 66 67K 127K 166960K 990 0 subproc 72 4K 4K 166960K 153 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 354 0 in_multi 75 5K 7K 166960K 270 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 778 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 227 136K 174K 166960K 25861 0 UVM aobj 131 6K 6K 166960K 133 0 pinsyscall 37 74K 106K 166960K 4121 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 79 0 NDP 14 0K 1K 166960K 104 0 temp 79 8692K 8764K 166960K 91736 0 kqueue 7 12K 30K 166960K 414 0 SYN cache 2 10K 18K 166960K 3 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 120 289 0 288 4 2 2 3 0 8 1 rtentry 176 259 0 181 6 0 6 6 0 8 0 unpcb 144 2221 0 2209 20 19 1 6 0 8 0 syncache 336 8 0 8 5 5 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 734 0 727 24 22 2 8 0 8 1 arp 128 44 0 31 1 0 1 1 0 8 0 inpcb 384 2664 0 2655 36 34 2 18 0 8 0 nd6 144 58 0 37 1 0 1 1 0 8 0 pkpcb 40 21 0 21 4 3 1 1 0 8 1 kcovpl 48 17 0 9 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 62 0 62 4 3 1 1 0 8 1 pppxif 1504 7 0 7 3 3 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 14 0 9 1 0 1 1 0 482 0 pffrnode 88 11 0 7 1 0 1 1 0 8 0 pffrent 40 96 0 91 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 pfrktable 1344 4 0 2 3 2 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 182 0 94 1 0 1 1 0 8 0 pfstkey 128 184 0 96 3 0 3 3 0 8 0 pfstate 384 180 0 92 10 0 10 10 0 8 0 pfrule 1344 37 0 22 4 2 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1027 0 664 31 7 24 29 0 8 0 art_table 32 1030 0 664 5 2 3 4 0 8 0 art_node 16 250 0 184 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 15 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 187 0 177 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 5672 0 4151 97 1 96 96 0 8 0 ffsino 288 5672 0 4151 110 0 110 110 0 8 0 nchpl 144 9223 0 8670 64 40 24 64 0 8 0 rtmask 32 12 0 12 5 5 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 32060 0 32060 3 2 1 2 0 8 1 percpumem 16 136 0 87 1 0 1 1 0 8 0 kstatmem 264 140 0 112 6 3 3 3 0 8 1 scsiplug 72 4 0 4 3 2 1 1 0 8 1 scxspl 216 27886 0 27886 12 11 1 8 1 8 1 plimitpl 152 436 0 420 1 0 1 1 0 8 0 sigapl 424 3068 0 2999 10 1 9 9 0 8 0 futexpl 64 35639 0 35636 1 0 1 1 0 8 0 knotepl 120 580 0 0 17 0 17 17 0 8 0 kqueuepl 224 1042 0 1035 12 11 1 5 0 8 0 pipepl 336 365 0 338 5 2 3 5 0 8 0 fdescpl 520 3025 0 2996 3 0 3 3 0 8 0 filepl 160 18402 0 18169 29 17 12 18 0 8 0 lockfpl 104 1051 0 1040 2 1 1 2 0 8 0 lockfspl 48 409 0 398 1 0 1 1 0 8 0 sessionpl 144 37 0 29 1 0 1 1 0 8 0 pgrppl 48 86 0 70 1 0 1 1 0 8 0 ucredpl 104 2490 0 2480 1 0 1 1 0 8 0 zombiepl 144 3416 0 3415 2 1 1 1 0 8 0 processpl 1192 3068 0 2999 6 0 6 6 0 8 0 procpl 656 6858 0 6780 8 0 8 8 0 8 0 srpgc 96 20 0 20 6 5 1 1 0 8 1 sosppl 168 20 0 20 5 4 1 1 0 8 1 sockpl 728 5230 0 5208 43 38 5 19 0 8 2 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 39 0 0 4 0 4 4 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 8647 0 0 540 0 540 540 0 8 0 bufpl 280 8238 0 2095 440 0 440 440 0 8 1 anonpl 32 10461 0 0 84 0 84 84 0 246 0 amapchunkpl 152 87333 0 86749 40 11 29 31 0 158 0 amappl16 200 5926 0 5890 43 39 4 15 0 8 0 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 150 0 141 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 3827 0 3798 3 1 2 2 0 8 0 amappl11 160 52 0 44 1 0 1 1 0 8 0 amappl10 152 11 0 10 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 24 0 20 1 0 1 1 0 8 0 amappl7 128 130 0 120 1 0 1 1 0 8 0 amappl6 120 300 0 295 1 0 1 1 0 8 0 amappl5 112 161 0 154 1 0 1 1 0 8 0 amappl4 104 371 0 353 1 0 1 1 0 8 0 amappl3 96 18150 0 18042 6 2 4 4 0 8 0 amappl2 88 825 0 780 2 0 2 2 0 8 0 amappl1 80 20591 0 20080 17 2 15 16 0 8 0 amappl 88 24593 0 24421 5 0 5 5 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 7 0 7 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 12 0 12 6 6 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 3025 0 2996 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3025 0 2996 1 0 1 1 0 8 0 vmmpekpl 168 22143 0 22075 4 0 4 4 0 8 0 vmmpepl 168 187491 0 185744 113 24 89 102 0 357 1 vmsppl 480 3024 0 2996 5 0 5 5 0 8 0 rwobjpl 72 50193 0 43328 130 2 128 130 0 8 0 pdppl 4096 6058 0 5992 140 72 68 88 0 8 2 pvpl 32 19016 0 0 154 1 153 153 0 265 0 pmappl 256 3024 0 2996 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 995 0 116 26 0 26 26 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: 0x79035c876f80, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x58 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x58 sys/dev/acpi/acpitimer.c:120 comcnputc(800,d) at comcnputc+0x29b sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x774 sys/ddb/db_output.c:168 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff833fa7ff) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8339faa0) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c459370,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c459370) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 end trace frame: 0xffff80003c4594a0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x58 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x58 sys/dev/acpi/acpitimer.c:120 comcnputc(800,d) at comcnputc+0x29b sys/dev/ic/com.c:1269 db_putchar(a) at db_putchar+0x774 sys/ddb/db_output.c:168 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff833fa7ff) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8339faa0) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c459370,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c459370) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff80002a37dc68) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a37dc68) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c459520) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8076d1c1b0,81,fffffd807f7d37b8,ffff80002a37dc68) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805fbf4190,ffff80002a37dc68) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805fbf4190,ffff80002a37dc68) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805fbf4190,ffff80002a37dc68) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd805fbf4190,ffff80002a37dc68) at closef+0x192 sys/kern/kern_descrip.c:1249 syscall(ffff80003c459780) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459780) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x946d381a6d0, count: -22