uvm_fault(0xfffffd806b9339a8, 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 419 95273 0 0 0x4000000 0 syz-executor dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033401980) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d2d1798,1,fffffd80097fb680,ffff800035c0ef90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b5e95e0,ffff800035c0ef90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b5e95e0,ffff800035c0ef90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff800035c0ef90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff800035c0ef90,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff800035c0ef90,ffff800033401cf0,ffff800033401c40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033401cf0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033401cf0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7030e7e2f680, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806b9339a8, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033401980) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d2d1798,1,fffffd80097fb680,ffff800035c0ef90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b5e95e0,ffff800035c0ef90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b5e95e0,ffff800035c0ef90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff800035c0ef90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff800035c0ef90,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff800035c0ef90,ffff800033401cf0,ffff800033401c40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033401cf0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033401cf0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7030e7e2f680, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000334018b0 rbx 0xffffffff81f91b40 dtclose rdx 0 rcx 0xffff800035c0ef90 rax 0xffff8000299ddff0 r8 0x2 r9 0x1 r10 0xb6ac37999f6887dd r11 0xddd4f973ad5413f3 r12 0 r13 0 r14 0 r15 0xffff80000150db00 rip 0xffffffff81f91f20 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033401880 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{1}> show proc PROC (syz-executor) tid=421688 pid=49693 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800035c0ef90 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2a6cf0,0xffff800035c0ea80 process=0xffff800035c15880 user=0xffff8000333fc000, vmspace=0xfffffd806b9339a8 estcpu=33, cpticks=1, pctcpu=0.3, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 95273 103865 90629 0 2 0 syz-executor 95273 419 90629 0 7 0x4000000 syz-executor 76402 509050 72799 0 2 0 syz-executor 76402 458353 72799 0 3 0x4000080 fsleep syz-executor 52761 123820 93504 0 2 0 syz-executor 52761 358107 93504 0 3 0x4000080 fifow syz-executor 52761 206574 93504 0 2 0x4000000 syz-executor 31479 517440 0 0 3 0x14200 acct acct 50013 103924 53591 0 3 0x2 biowait syz-executor 21000 59524 0 0 3 0x14200 bored sosplice 93504 109 53591 0 3 0x82 nanoslp syz-executor 889 371087 53591 0 3 0x82 wait syz-executor 83611 367638 53591 0 3 0x2 biowait syz-executor 90629 478792 53591 0 2 0xc82 syz-executor 72799 330465 53591 0 3 0x82 nanoslp syz-executor 75709 343138 53591 0 2 0xc82 syz-executor 24890 145161 53591 0 3 0x82 wait syz-executor 53591 487266 28243 0 3 0x82 kqread syz-executor 28243 206722 63342 0 3 0x10008a sigsusp ksh 63342 239902 51328 0 3 0x98 kqread sshd-session 51328 408004 98960 0 3 0x92 kqread sshd-session 31750 33246 1 0 3 0x100083 ttyopn getty 98960 122427 1 0 3 0x88 kqread sshd 52658 298304 51977 74 3 0x1100092 bpf pflogd 51977 167745 1 0 3 0x80 sbwait pflogd 74815 495535 41883 73 3 0x1100090 kqread syslogd 41883 365203 1 0 3 0x100082 sbwait syslogd 69492 370151 1 0 3 0x100080 kqread resolvd 49716 244848 58554 77 3 0x100092 kqread dhcpleased 54215 355941 58554 77 3 0x100092 kqread dhcpleased 58554 107343 1 0 3 0x80 kqread dhcpleased 11647 434631 0 0 3 0x14200 bored smr 8841 112839 0 0 2 0x14200 zerothread 15912 497114 0 0 3 0x14200 aiodoned aiodoned 9025 126532 0 0 3 0x14200 syncer update 84695 138423 0 0 3 0x14200 cleaner cleaner 89833 244519 0 0 3 0x14200 reaper reaper 68991 76106 0 0 3 0x14200 pgdaemon pagedaemon 77425 11944 0 0 3 0x14200 bored viomb 86451 313490 0 0 3 0x40014200 acpi0 acpi0 32195 389800 0 0 3 0x40014200 idle1 12312 366572 0 0 3 0x14200 bored softnet7 19427 11128 0 0 3 0x14200 bored softnet6 34164 271438 0 0 3 0x14200 bored softnet5 51984 144521 0 0 3 0x14200 bored softnet4 33357 452987 0 0 3 0x14200 bored softnet3 88847 494320 0 0 3 0x14200 bored softnet2 55744 29688 0 0 3 0x14200 bored softnet1 4073 120308 0 0 3 0x14200 bored softnet0 97453 272897 0 0 3 0x14200 smrbar systqmp 66175 205393 0 0 3 0x14200 bored systq 82476 255499 0 0 3 0x14200 tmoslp softclockmp 79940 323440 0 0 3 0x40014200 tmoslp softclock 50864 351034 0 0 3 0x40014200 idle0 1 247694 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 50013 (syz-executor) thread 0xffff800035c0f220 (103924) Process 83611 (syz-executor) thread 0xffff8000ffff2f70 (367638) Process 97453 (systqmp) thread 0xffff8000ffffe290 (272897) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 11175K 11495K 166960K 12418 0 pcb 18 14K 16K 166960K 273 0 rtable 187 9K 9K 166960K 407 0 pf 32 17K 18K 166960K 104 0 ifaddr 35 6K 7K 166960K 86 0 ifgroup 50 2K 2K 166960K 133 0 sysctl 4 1K 9K 166960K 9 0 counters 64 36K 37K 166960K 164 0 ioctlops 0 0K 4K 166960K 1702 0 iov 0 0K 26K 166960K 76 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1421 89K 90K 166960K 2239 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 35 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 989 0 sigio 0 0K 0K 166960K 10 0 proc 72 115K 164K 166960K 650 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 105 0 in_multi 80 5K 7K 166960K 142 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 457 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 167K 185K 166960K 10265 0 UVM aobj 38 5K 5K 166960K 39 0 pinsyscall 41 82K 98K 166960K 2094 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 45 0 NDP 10 0K 2K 166960K 57 0 temp 60 8680K 8934K 166960K 43941 0 kqueue 14 22K 32K 166960K 218 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> 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 120 160 0 157 3 0 3 3 0 8 2 rtentry 176 140 0 66 5 0 5 5 0 8 0 unpcb 144 750 0 727 8 2 6 6 0 8 5 syncache 336 11 0 11 2 2 0 1 0 8 0 tcpcb 736 398 0 393 12 11 1 7 0 8 0 arp 128 16 0 7 1 0 1 1 0 8 0 inpcb 328 1043 0 1033 12 10 2 7 0 8 1 nd6 144 32 0 9 1 0 1 1 0 8 0 pkpcb 40 23 0 23 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 40 0 40 2 1 1 1 0 8 1 pppxif 1504 2 0 2 2 1 1 1 0 8 1 pffrag 232 7 0 1 1 0 1 1 0 482 0 pffrnode 88 6 0 1 1 0 1 1 0 8 0 pffrent 40 9 0 2 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 2 0 2 1 1 0 1 0 8 0 pfstitem 24 68 0 17 1 0 1 1 0 8 0 pfstkey 128 68 0 17 2 0 2 2 0 8 0 pfstate 384 68 0 17 6 0 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 691 0 233 31 2 29 30 0 8 0 art_table 40 693 0 233 5 0 5 5 0 8 0 art_node 32 140 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 2 1 1 1 0 8 0 semapl 112 31 0 21 1 0 1 1 0 8 0 shmpl 112 36 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3303 0 1798 95 0 95 95 0 8 0 ffsino 296 3303 0 1798 117 0 117 117 0 8 0 nchpl 144 4647 0 2955 64 0 64 64 0 8 1 rtmask 32 13 0 13 3 2 1 1 0 8 1 uvmvnodes 80 3761 0 0 77 0 77 77 0 8 0 vnodes 216 3761 0 0 209 0 209 209 0 8 0 namei 1024 15258 0 15258 2 1 1 2 0 8 1 percpumem 16 97 0 50 1 0 1 1 0 8 0 kstatmem 264 78 0 56 4 2 2 3 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 27521 0 27519 10 8 2 8 1 8 1 plimitpl 152 188 0 171 1 0 1 1 0 8 0 sigapl 424 1263 0 1209 7 0 7 7 0 8 0 knotepl 120 772 0 0 24 0 24 24 0 8 0 kqueuepl 224 438 0 428 7 6 1 5 0 8 0 pipepl 344 247 0 219 9 6 3 9 0 8 0 fdescpl 528 1237 0 1207 3 0 3 3 0 8 0 filepl 160 7943 0 7717 24 8 16 19 0 8 5 lockfpl 104 665 0 663 1 0 1 1 0 8 0 lockfspl 48 204 0 202 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1469 0 1456 1 0 1 1 0 8 0 zombiepl 144 1212 0 1209 1 0 1 1 0 8 0 processpl 1248 1263 0 1209 5 0 5 5 0 8 0 procpl 656 2653 0 2595 7 0 7 7 0 8 1 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 752 1993 0 1956 30 19 11 17 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 106 0 0 14 0 14 14 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 296 0 0 19 0 19 19 0 8 0 bufpl 280 11124 0 4982 439 0 439 439 0 8 0 anonpl 32 14384 0 0 116 0 116 116 0 246 0 amapchunkpl 152 37228 0 36760 46 14 32 33 0 158 9 amappl16 200 5115 0 5083 58 47 11 35 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 8 0 7 2 1 1 1 0 8 0 amappl12 168 1903 0 1873 3 1 2 2 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 288 0 288 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 140 0 128 1 0 1 1 0 8 0 amappl6 120 193 0 189 1 0 1 1 0 8 0 amappl5 112 126 0 116 1 0 1 1 0 8 0 amappl4 104 329 0 307 1 0 1 1 0 8 0 amappl3 96 6783 0 6678 6 2 4 4 0 8 0 amappl2 88 724 0 661 2 0 2 2 0 8 0 amappl1 80 13156 0 12558 16 1 15 16 0 8 0 amappl 88 9370 0 9212 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 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 7 0 7 2 1 1 1 0 8 1 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 38 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1237 0 1207 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1237 0 1207 1 0 1 1 0 8 0 vmmpekpl 168 11888 0 11847 3 0 3 3 0 8 0 vmmpepl 168 85964 0 84017 118 9 109 115 0 357 12 vmsppl 488 1236 0 1207 5 1 4 5 0 8 0 rwobjpl 80 29264 0 24538 100 0 100 100 0 8 0 pdppl 4096 2481 0 2414 103 32 71 81 0 8 4 pvpl 32 24596 0 0 199 0 199 199 0 265 0 pmappl 256 1236 0 1207 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 299 0 52 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838aeff0) 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 __mp_lock(ffffffff83954f30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83954f30) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c4aee40,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 syscall(ffff80003c4af020) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4af020) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e8c993ee50, count: 6 ddb{0}> trace x86_ipi_db(ffffffff838aeff0) 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 __mp_lock(ffffffff83954f30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83954f30) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c4aee40,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 syscall(ffff80003c4af020) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4af020) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e8c993ee50, count: -9 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033401980) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d2d1798,1,fffffd80097fb680,ffff800035c0ef90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b5e95e0,ffff800035c0ef90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b5e95e0,ffff800035c0ef90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff800035c0ef90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff800035c0ef90,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff800035c0ef90,ffff800033401cf0,ffff800033401c40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033401cf0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033401cf0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7030e7e2f680, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800035c0ef90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033401980) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d2d1798,1,fffffd80097fb680,ffff800035c0ef90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b5e95e0,ffff800035c0ef90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b5e95e0,ffff800035c0ef90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b5e95e0,ffff800035c0ef90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff800035c0ef90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff800035c0ef90,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff800035c0ef90,ffff800033401cf0,ffff800033401c40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033401cf0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033401cf0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7030e7e2f680, count: -12