*cpu1: uvm_fault(0xfffffd806c90c208, 0x0, 0, 1) -> e ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x70795a75db30, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a32e800 rbx 0 rdx 0 rcx 0xffff800030fd2048 rax 0x3c r8 0xffff80002a32e730 r9 0 r10 0x595c32f4603dad78 r11 0x14da742ce1115f1a r12 0 r13 0 r14 0xffff800030fd2048 r15 0 rip 0xffffffff831363ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a32e780 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=477434 pid=98730 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeea78,0xffff800030fd2fe8 process=0xffff800031c50ea0 user=0xffff80002a329000, vmspace=0xfffffd805ccc49b8 estcpu=36, cpticks=8, pctcpu=0.0, user=6, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 684 293094 17938 0 2 0 syz-executor 684 428848 17938 0 2 0x4000000 syz-executor 25960 237358 98270 0 2 0 syz-executor 25960 8434 98270 0 3 0x4000080 fsleep syz-executor 25960 497022 98270 0 3 0x4000080 bell syz-executor 25960 338223 98270 0 3 0x4000080 fsleep syz-executor 20163 448368 38202 0 3 0x80 nanoslp syz-executor 20163 385706 38202 0 3 0x4000080 ttyout syz-executor 20163 317493 38202 0 3 0x4000080 fsleep syz-executor 31853 458974 53508 0 2 0 syz-executor 31853 456537 53508 0 3 0x4000000 biowait syz-executor 31853 351244 53508 0 3 0x4000000 inode syz-executor 31853 78267 53508 0 2 0x4000000 syz-executor *98730 477434 70341 0 7 0 syz-executor 98730 279070 70341 0 3 0x4000080 fsleep syz-executor 70341 371496 15276 0 3 0x82 nanoslp syz-executor 41141 463520 0 0 3 0x14200 acct acct 17938 293029 15276 0 3 0x82 nanoslp syz-executor 98270 380765 15276 0 3 0x82 nanoslp syz-executor 81602 416664 0 0 3 0x14280 nfsidl nfsio 15262 353036 0 0 3 0x14280 nfsidl nfsio 32259 267438 0 0 3 0x14280 nfsidl nfsio 80033 89482 0 0 3 0x14280 nfsidl nfsio 45802 320365 15276 0 3 0x82 nanoslp syz-executor 5814 256010 15276 0 3 0x82 nanoslp syz-executor 53508 192382 15276 0 3 0x82 nanoslp syz-executor 38202 236896 15276 0 3 0x82 nanoslp syz-executor 27229 8306 15276 0 3 0x82 nanoslp syz-executor 15276 515024 73382 0 3 0x82 kqread syz-executor 73382 336215 78865 0 3 0x10008a sigsusp ksh 78865 219966 66694 0 3 0x98 kqread sshd-session 66694 49719 54891 0 3 0x92 kqread sshd-session 91916 334812 1 0 3 0x100083 ttyin getty 54891 245496 1 0 3 0x88 kqread sshd 63134 441257 68832 74 3 0x1100092 bpf pflogd 68832 11326 1 0 3 0x80 sbwait pflogd 85238 224677 39325 73 3 0x1100090 kqread syslogd 39325 429151 1 0 3 0x100082 sbwait syslogd 24263 96441 1 0 3 0x100080 kqread resolvd 63194 295106 26639 77 3 0x100092 kqread dhcpleased 91708 32819 26639 77 3 0x100092 kqread dhcpleased 26639 399679 1 0 3 0x80 kqread dhcpleased 42855 233393 0 0 3 0x14200 bored smr 11442 10529 0 0 2 0x14200 zerothread 49999 433927 0 0 3 0x14200 aiodoned aiodoned 35622 196660 0 0 3 0x14200 syncer update 66733 231957 0 0 3 0x14200 cleaner cleaner 58795 21639 0 0 3 0x14200 reaper reaper 11864 498163 0 0 3 0x14200 pgdaemon pagedaemon 65699 406030 0 0 3 0x14200 bored viomb 13845 49009 0 0 3 0x40014200 acpi0 acpi0 84770 439495 0 0 3 0x40014200 idle1 42896 98197 0 0 3 0x14200 bored softnet1 9648 270817 0 0 3 0x14200 bored softnet0 30946 88579 0 0 3 0x14200 bored systqmp 15022 104820 0 0 3 0x14200 bored systq 51786 184941 0 0 3 0x14200 tmoslp softclockmp 19553 348791 0 0 3 0x40014200 tmoslp softclock 41779 231549 0 0 3 0x40014200 idle0 1 114571 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 (0xfffffd8076564c10) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_write_protect+0x80 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_write_protect+0x80 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_write_protect+0x80 sys/arch/amd64/amd64/pmap.c:2163 #4 uvm_map_protect+0xb95 pmap_protect sys/arch/amd64/compile/SYZKALLER/obj/machine/pmap.h:476 [inline] #4 uvm_map_protect+0xb95 sys/uvm/uvm_map.c:3191 #5 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 31853 (syz-executor) thread 0xffff8000fffee548 (456537) exclusive rrwlock inode r = 0 (0xfffffd807c1ffc30) #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+0xa3 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 Process 98730 (syz-executor) thread 0xffff800030fd2048 (477434) exclusive rwlock uobjlk r = 0 (0xfffffd8076d03110) #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 uvm_map_protect+0xb36 sys/uvm/uvm_map.c:3191 #3 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #5 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd805ccc4ab8) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3064 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #6 Xsyscall+0x128 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd8076564c10) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_write_protect+0x80 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_write_protect+0x80 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_write_protect+0x80 sys/arch/amd64/amd64/pmap.c:2163 #4 uvm_map_protect+0xb95 pmap_protect sys/arch/amd64/compile/SYZKALLER/obj/machine/pmap.h:476 [inline] #4 uvm_map_protect+0xb95 sys/uvm/uvm_map.c:3191 #5 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10280 11133K 12405K 166960K 24467 0 pcb 17 20K 36K 166960K 4067 0 rtable 322 28K 29K 166960K 3701 0 pf 48 20K 84K 166960K 1908 0 ifaddr 49 16K 20K 166960K 883 0 ifgroup 72 3K 3K 166960K 1769 0 sysctl 4 1K 9K 166960K 224 0 counters 80 38K 39K 166960K 2944 0 ioctlops 0 0K 4K 166960K 5721 0 iov 1 2K 40K 166960K 1553 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1555 98K 98K 166960K 13761 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 66 0 VM map 2 1K 1K 166960K 2 0 sem 29 136K 137K 166960K 66 0 dirhash 243 43K 43K 166960K 28893 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 16289 0 sigio 1 0K 0K 166960K 324 0 proc 73 115K 180K 166960K 3314 0 subproc 72 4K 4K 166960K 458 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2653 0 in_multi 86 6K 7K 166960K 1064 0 ether_multi 1 0K 0K 166960K 202 0 mrt 1 0K 0K 166960K 80 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 4006 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 42 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 279 175K 192K 166960K 143342 0 UVM aobj 103 85K 85K 166960K 131 0 pinsyscall 43 86K 104K 166960K 18475 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 1415 0 NDP 16 0K 2K 166960K 716 0 temp 116 8680K 9196K 166960K 805761 0 kqueue 14 22K 34K 166960K 3056 0 SYN cache 2 0K 16K 166960K 4 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 1890 0 1887 17 16 1 4 0 8 0 rtentry 176 1133 0 1021 6 0 6 6 0 8 0 unpcb 144 12561 0 12542 81 79 2 8 0 8 1 syncache 336 40 0 40 14 14 0 1 0 8 0 tcpqe 32 13 0 13 6 6 0 1 0 8 0 tcpcb 736 5470 0 5462 88 86 2 10 0 8 0 arp 136 224 0 203 1 0 1 1 0 8 0 inpcb 328 20399 0 20386 146 142 4 16 0 8 1 nd6 152 182 0 156 3 1 2 2 0 8 0 pkpcb 40 131 0 131 23 22 1 1 0 8 1 kcovpl 48 50 0 42 1 0 1 1 0 8 0 mppekey 1024 11 0 11 9 9 0 1 0 8 0 ppxss 1192 1247 0 1245 10 9 1 1 0 8 0 pppxif 1504 142 0 142 23 22 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 102 0 90 2 0 2 2 0 482 0 pffrnode 88 90 0 79 1 0 1 1 0 8 0 pffrent 40 245 0 233 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 53 0 53 14 14 0 1 0 8 0 pfstitem 24 94 0 88 1 0 1 1 0 8 0 pfstkey 128 103 0 98 2 1 1 2 0 8 0 pfstate 448 99 0 94 6 4 2 6 0 8 0 pfrule 1344 31 0 25 2 1 1 2 0 8 0 rttmr 136 7 0 7 4 4 0 1 0 8 0 art_heap8 4096 7 0 2 7 2 5 6 0 8 0 art_heap4 256 3513 0 3105 61 33 28 31 0 8 0 art_table 40 3520 0 3107 5 0 5 5 0 8 0 art_node 32 1110 0 1013 3 2 1 3 0 8 0 sysvmsgpl 40 26 0 20 1 0 1 1 0 8 0 semupl 112 11 0 11 11 11 0 1 0 8 0 semapl 112 53 0 26 1 0 1 1 0 8 0 shmpl 112 70 0 8 2 0 2 2 0 8 0 dirhash 1024 9652 0 9558 14 2 12 12 0 8 0 dino2pl 256 32563 0 30924 103 0 103 103 0 8 0 ffsino 296 32563 0 30924 127 0 127 127 0 8 0 nchpl 144 55383 0 54656 69 41 28 64 0 8 0 rtmask 32 178 0 178 22 21 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 203128 0 203128 6 5 1 2 0 8 1 percpumem 16 1487 0 1432 1 0 1 1 0 8 0 vcpupl 3968 44 0 6 5 0 5 5 0 8 0 vmpool 840 58 0 20 6 1 5 5 0 8 0 kstatmem 264 1232 0 1194 7 4 3 3 0 8 0 acpiwqpl 32 10 0 10 1 0 1 1 1 8 1 scsiplug 72 86 0 86 23 22 1 1 0 8 1 scxspl 216 347253 0 347252 38 35 3 7 1 8 2 plimitpl 152 4858 0 4839 1 0 1 1 0 8 0 sigapl 424 16426 0 16373 10 3 7 8 0 8 0 knotepl 120 1247 0 0 24 0 24 24 0 8 0 kqueuepl 224 7306 0 7295 59 57 2 5 0 8 1 pipepl 344 2461 0 2433 56 52 4 9 0 8 1 fdescpl 528 16337 0 16305 3 0 3 3 0 8 0 filepl 160 127573 0 127344 133 118 15 20 0 8 2 lockfpl 104 6635 0 6632 8 7 1 2 0 8 0 lockfspl 48 2304 0 2301 1 0 1 1 0 8 0 sessionpl 144 96 0 87 1 0 1 1 0 8 0 pgrppl 48 485 0 468 1 0 1 1 0 8 0 ucredpl 104 22056 0 22042 1 0 1 1 0 8 0 zombiepl 144 17311 0 17308 2 1 1 1 0 8 0 processpl 1232 16426 0 16373 8 3 5 6 0 8 0 procpl 664 42395 0 42332 10 4 6 8 0 8 0 sosppl 176 112 0 112 25 24 1 1 0 8 1 sockpl 752 35798 0 35763 295 286 9 24 0 8 4 mcl64k 65536 25 0 0 4 1 3 4 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 136 0 0 16 1 15 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 207 42 31 9 3 6 8 0 8 0 mtagpl 96 131 0 0 3 1 2 3 0 8 0 mbufpl 256 6305 0 0 374 0 374 374 0 8 0 bufpl 280 138851 0 132714 439 0 439 439 0 8 0 anonpl 32 16729 0 0 132 0 132 132 0 246 0 amapchunkpl 152 518852 0 518094 160 122 38 40 0 158 6 amappl16 200 52700 0 52467 244 221 23 33 0 8 6 amappl15 192 41 0 41 2 2 0 1 0 8 0 amappl14 184 23 0 23 6 6 0 1 0 8 0 amappl13 176 929 0 928 1 0 1 1 0 8 0 amappl12 168 17061 0 17018 3 0 3 3 0 8 0 amappl11 160 13 0 12 5 4 1 1 0 8 0 amappl10 152 72 0 56 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 27 0 23 1 0 1 1 0 8 0 amappl7 128 275 0 273 1 0 1 1 0 8 0 amappl6 120 818 0 804 1 0 1 1 0 8 0 amappl5 112 114 0 102 1 0 1 1 0 8 0 amappl4 104 796 0 766 1 0 1 1 0 8 0 amappl3 96 92609 0 92500 4 1 3 3 0 8 0 amappl2 88 16576 0 16496 5 2 3 3 0 8 0 amappl1 80 86166 0 85569 22 5 17 18 0 8 0 amappl 88 139055 0 138857 9 4 5 5 0 92 0 uvmvnodes 80 394 0 1 9 0 9 9 0 8 0 dma65536 65536 73 0 73 8 7 1 1 0 8 1 dma32768 32768 5 0 5 4 4 0 1 0 8 0 dma8192 8192 8 0 8 7 6 1 1 0 8 1 dma4096 4096 7 0 7 7 7 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma512 512 5 0 5 5 5 0 1 0 8 0 dma256 256 9 0 9 4 4 0 1 0 8 0 dma128 128 285 0 285 21 20 1 1 0 8 1 dma64 64 14 0 14 9 9 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 130 0 28 2 0 2 2 0 8 0 uaddrrnd 24 16337 0 16305 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 16337 0 16305 1 0 1 1 0 8 0 vmmpekpl 168 109117 0 109047 4 0 4 4 0 8 0 vmmpepl 168 1015060 0 1012811 252 145 107 117 0 357 2 vmsppl 488 16336 0 16305 7 2 5 5 0 8 0 rwobjpl 80 241332 0 239646 58 18 40 41 0 8 0 pdppl 4096 32798 0 32688 275 164 111 113 0 8 1 pvpl 32 25806 0 0 206 0 206 206 0 265 0 pmappl 256 16394 0 16325 5 0 5 5 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 1029 0 357 21 1 20 20 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x70795a75db30, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,69) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,69) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(69) at cnputc+0x67 sys/dev/cons.c:218 kputchar(69,5,0) at kputchar+0x2ed sys/kern/subr_prf.c:367 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 printf(ffffffff8337454f) at printf+0x8b sys/kern/subr_prf.c:529 trap_print(ffff800031c35f00,6) at trap_print+0xd8 sys/arch/amd64/amd64/trap.c:660 kerntrap(ffff800031c35f00) at kerntrap+0x2e6 sys/arch/amd64/amd64/trap.c:516 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001756000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffeea78) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffeea78) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 end trace frame: 0xffff800031c360a0, 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,69) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,69) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(69) at cnputc+0x67 sys/dev/cons.c:218 kputchar(69,5,0) at kputchar+0x2ed sys/kern/subr_prf.c:367 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 printf(ffffffff8337454f) at printf+0x8b sys/kern/subr_prf.c:529 trap_print(ffff800031c35f00,6) at trap_print+0xd8 sys/arch/amd64/amd64/trap.c:660 kerntrap(ffff800031c35f00) at kerntrap+0x2e6 sys/arch/amd64/amd64/trap.c:516 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001756000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffeea78) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffeea78) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff800031c360b0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806eb53cf8,81,fffffd80097fd0d0,ffff8000fffeea78) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c9ed7c0,ffff8000fffeea78) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c9ed7c0,ffff8000fffeea78) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c9ed7c0,ffff8000fffeea78) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c9ed7c0,ffff8000fffeea78) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffeea78) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffeea78,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffeea78,ffff800031c36420,ffff800031c36370) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800031c36420) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800031c36420) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7684b9bedd10, count: -24