uvm_fault(0xfffffd806c2523d8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 TID PID UID PRFLAGS PFLAGS CPU COMMAND 417943 49205 0 0x2 0x1 1 syz-executor dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036fe2e80) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807a0ac490,81,fffffd80097fb750,ffff80003c43fc58) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806caefa18,ffff80003c43fc58) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806caefa18,ffff80003c43fc58) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c43fc58) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c43fc58,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c43fc58,ffff800036fe31f0,ffff800036fe3140) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036fe31f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036fe31f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b9ae561790, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806c2523d8, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036fe2e80) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807a0ac490,81,fffffd80097fb750,ffff80003c43fc58) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806caefa18,ffff80003c43fc58) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806caefa18,ffff80003c43fc58) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c43fc58) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c43fc58,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c43fc58,ffff800036fe31f0,ffff800036fe3140) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036fe31f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036fe31f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b9ae561790, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800036fe2db0 rbx 0xffffffff818e7780 dtclose rdx 0 rcx 0xffff80003c43fc58 rax 0xffffffff838c2e50 dt_prov_static r8 0 r9 0 r10 0xcf38936b09c07738 r11 0x270606fb4fbb5a49 r12 0xffffffff838c3510 dt_static_uvm_map_insert r13 0 r14 0 r15 0xffff8000014cd600 rip 0xffffffff818e7b60 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800036fe2d80 ss 0 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{0}> show proc PROC (syz-executor) tid=259309 pid=11097 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c43fc58 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a297210,0xffff80003c43f228 process=0xffff80003a41f098 user=0xffff800036fde000, vmspace=0xfffffd806c2523d8 estcpu=33, cpticks=10, pctcpu=0.8, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99425 39034 49205 0 2 0 syz-executor 99425 461308 49205 0 2 0x4000000 syz-executor 99425 490304 49205 0 2 0x4000000 syz-executor 99425 469928 49205 0 3 0x4000000 vmmaplk syz-executor 60705 124130 73571 0 2 0 syz-executor 60705 499829 73571 0 2 0x4000000 syz-executor 82381 19786 0 0 3 0x14200 acct acct 77318 286639 39165 0 2 0xc80 syz-executor 77318 493718 39165 0 3 0x4000080 lockf syz-executor 77318 269426 39165 0 3 0x4000080 lockf syz-executor 77318 409801 39165 0 3 0x4000080 fsleep syz-executor 44096 215306 42912 0 2 0 syz-executor 44096 491925 42912 0 3 0x4000080 fsleep syz-executor 44096 87742 42912 0 3 0x4000080 lockf syz-executor 44096 172153 42912 0 3 0x4000080 fsleep syz-executor 42208 263436 63469 0 2 0xc80 syz-executor 42208 325985 63469 0 3 0x4000080 kqread syz-executor 42208 330918 63469 0 3 0x4000080 fsleep syz-executor 42208 455268 63469 0 3 0x4000080 fsleep syz-executor 54601 202803 88163 0 2 0xc82 syz-executor 26129 339059 0 0 3 0x14200 bored sosplice 63469 230164 88163 0 2 0xc82 syz-executor 42912 368839 88163 0 2 0xc82 syz-executor 73571 438336 88163 0 2 0xc82 syz-executor 34354 32937 88163 0 2 0xc82 syz-executor 49205 417943 88163 0 7 0x3 syz-executor 39165 318777 88163 0 2 0xc82 syz-executor 91947 199206 88163 0 2 0xc82 syz-executor 88163 152305 31927 0 3 0x82 kqread syz-executor 31927 439287 74025 0 3 0x10008a sigsusp ksh 74025 210644 89716 0 3 0x98 kqread sshd-session 89716 379439 52975 0 3 0x92 kqread sshd-session 65342 91700 1 0 3 0x100083 ttyin getty 52975 165286 1 0 3 0x88 kqread sshd 86928 150792 2572 74 3 0x1100092 bpf pflogd 2572 279350 1 0 3 0x80 sbwait pflogd 70346 449736 48870 73 3 0x1100090 kqread syslogd 48870 480311 1 0 3 0x100082 sbwait syslogd 97996 417371 1 0 3 0x100080 kqread resolvd 2722 244028 60643 77 3 0x100092 kqread dhcpleased 41976 387566 60643 77 3 0x100092 kqread dhcpleased 60643 155148 1 0 3 0x80 kqread dhcpleased 63944 466053 0 0 3 0x14200 bored smr 13195 439909 0 0 2 0x14200 zerothread 77471 232272 0 0 3 0x14200 aiodoned aiodoned 56356 183023 0 0 3 0x14200 syncer update 14717 483732 0 0 3 0x14200 cleaner cleaner 17617 450993 0 0 2 0x14200 reaper 47093 87564 0 0 3 0x14200 pgdaemon pagedaemon 71306 404853 0 0 3 0x14200 bored viomb 48754 375013 0 0 3 0x40014200 acpi0 acpi0 91897 56814 0 0 3 0x40014200 idle1 53856 353297 0 0 3 0x14200 bored softnet3 9575 266168 0 0 3 0x14200 bored softnet2 41380 247880 0 0 3 0x14200 bored softnet1 53829 322595 0 0 3 0x14200 bored softnet0 19587 76956 0 0 3 0x14200 bored systqmp 58480 36879 0 0 3 0x14200 bored systq 64206 223915 0 0 3 0x14200 tmoslp softclockmp 34055 426968 0 0 2 0x40014200 softclock 52108 147490 0 0 3 0x40014200 idle0 1 350184 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 99425 (syz-executor) thread 0xffff80003c43f9c8 (461308) exclusive rrwlock inode r = 0 (0xfffffd806f0dbe58) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 vn_open+0x13f sys/kern/vfs_vnops.c:140 #12 doopenat+0x32e sys/kern/vfs_syscalls.c:1137 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 Process 99425 (syz-executor) thread 0xffff80003c43e7d8 (490304) exclusive rwlock vmmaplk r = 0 (0xfffffd806c252898) #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+0x377 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x8a5 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x8a5 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #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 60705 (syz-executor) thread 0xffff80003c43f4a8 (499829) exclusive rrwlock inode r = 0 (0xfffffd806cbfd560) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 17617 (reaper) thread 0xffff8000ffffd488 (450993) exclusive rwlock kmmaplk r = 0 (0xffffffff839cec28) #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+0x377 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:285 #6 reaper+0x1cb sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11239K 12632K 166960K 12252 0 pcb 17 13K 14K 166960K 121 0 rtable 232 8K 8K 166960K 437 0 pf 39 18K 81K 166960K 84 0 ifaddr 46 8K 8K 166960K 70 0 ifgroup 62 2K 2K 166960K 100 0 sysctl 4 1K 9K 166960K 10 0 counters 74 37K 37K 166960K 114 0 ioctlops 0 0K 4K 166960K 1530 0 iov 0 0K 12K 166960K 44 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 93K 93K 166960K 1931 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 17 0 dirhash 15 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 531 0 sigio 0 0K 0K 166960K 6 0 proc 72 91K 140K 166960K 600 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 37 0 in_multi 97 7K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 4 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 431 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 268 172K 177K 166960K 6488 0 UVM aobj 10 2K 2K 166960K 12 0 pinsyscall 43 86K 104K 166960K 1660 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 14 0 NDP 14 0K 2K 166960K 45 0 temp 77 8692K 8810K 166960K 21461 0 kqueue 15 24K 28K 166960K 98 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 62 0 59 1 0 1 1 0 8 0 rtentry 176 137 0 32 6 0 6 6 0 8 0 unpcb 144 363 0 346 6 5 1 6 0 8 0 syncache 336 6 0 6 1 1 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 808 152 0 146 8 7 1 8 0 8 0 arp 128 22 0 3 1 0 1 1 0 8 0 inpcb 328 590 0 580 13 9 4 10 0 8 3 nd6 144 28 0 3 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 17 0 15 2 1 1 1 0 8 0 pppxif 1504 4 0 3 2 1 1 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 0 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 pfstitem 24 37 0 1 1 0 1 1 0 8 0 pfstkey 128 37 0 1 2 0 2 2 0 8 0 pfstate 384 37 0 1 4 0 4 4 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 518 0 93 29 2 27 29 0 8 0 art_table 32 520 0 93 4 0 4 4 0 8 0 art_node 16 131 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 12 0 3 1 0 1 1 0 8 0 shmpl 112 9 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 2 3 0 3 3 0 8 0 dino2pl 256 2312 0 795 96 0 96 96 0 8 0 ffsino 288 2312 0 795 109 0 109 109 0 8 0 nchpl 144 3076 0 1376 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 2785 0 0 57 0 57 57 0 8 0 vnodes 216 2786 0 0 155 0 155 155 0 8 0 namei 1024 10072 0 10071 3 2 1 2 0 8 0 percpumem 16 72 0 20 1 0 1 1 0 8 0 kstatmem 264 56 0 26 4 1 3 3 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 9718 0 9718 11 9 2 8 1 8 2 plimitpl 152 105 0 88 1 0 1 1 0 8 0 sigapl 424 842 0 790 7 1 6 7 0 8 0 knotepl 120 555 0 0 17 0 17 17 0 8 0 kqueuepl 224 211 0 200 5 4 1 5 0 8 0 pipepl 336 141 0 114 3 0 3 3 0 8 0 fdescpl 520 815 0 783 3 0 3 3 0 8 0 filepl 160 4563 0 4335 19 8 11 18 0 8 1 lockfpl 104 204 0 197 1 0 1 1 0 8 0 lockfspl 48 60 0 56 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 42 0 25 1 0 1 1 0 8 0 ucredpl 104 675 0 661 1 0 1 1 0 8 0 zombiepl 144 859 0 856 1 0 1 1 0 8 0 processpl 1240 842 0 790 6 1 5 5 0 8 0 procpl 656 1518 0 1452 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 728 1029 0 994 18 11 7 16 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 0 14 14 0 8 0 mcl2k 2048 34 0 0 5 0 5 5 0 8 1 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 244 0 0 16 0 16 16 0 8 0 bufpl 280 3095 0 118 213 0 213 213 0 8 0 anonpl 32 7502 0 0 62 1 61 61 0 246 0 amapchunkpl 152 20424 0 19785 30 4 26 29 0 158 1 amappl16 200 2456 0 2390 10 3 7 7 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 140 0 128 1 0 1 1 0 8 0 amappl13 176 33 0 33 1 1 0 1 0 8 0 amappl12 168 1479 0 1447 4 1 3 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 12 0 11 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 196 0 193 1 0 1 1 0 8 0 amappl5 112 146 0 137 1 0 1 1 0 8 0 amappl4 104 392 0 372 1 0 1 1 0 8 0 amappl3 96 3857 0 3732 4 0 4 4 0 8 0 amappl2 88 674 0 611 2 0 2 2 0 8 0 amappl1 80 10445 0 9831 15 1 14 15 0 8 0 amappl 88 5705 0 5510 5 0 5 5 0 92 0 dma8192 8192 1 0 1 1 1 0 1 0 8 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 128 255 0 255 2 2 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 11 0 2 1 0 1 1 0 8 0 uaddrrnd 24 815 0 783 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 815 0 783 1 0 1 1 0 8 0 vmmpekpl 168 8374 0 8327 3 0 3 3 0 8 0 vmmpepl 168 57612 0 55505 95 3 92 95 0 357 0 vmsppl 480 814 0 783 5 1 4 5 0 8 0 rwobjpl 72 20431 0 16632 70 0 70 70 0 8 0 pdppl 4096 1638 0 1566 106 34 72 84 0 8 0 pvpl 32 14554 0 0 120 2 118 118 0 265 0 pmappl 256 814 0 783 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 405 0 49 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c43fc58) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036fe2e80) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807a0ac490,81,fffffd80097fb750,ffff80003c43fc58) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806caefa18,ffff80003c43fc58) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806caefa18,ffff80003c43fc58) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806caefa18,ffff80003c43fc58) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c43fc58) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c43fc58,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c43fc58,ffff800036fe31f0,ffff800036fe3140) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036fe31f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036fe31f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b9ae561790, count: -12 ddb{0}> machine ddbcpu 1