uvm_fault(0xfffffd806b9d19a0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 406000 10877 0 0x14000 0x200 0 reaper dt_ioctl_record_stop(ffff800001482000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c469340) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8065cbd060,1,fffffd80097fb4e0,ffff80002a2e4d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b99c2e8,ffff80002a2e4d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b99c2e8,ffff80002a2e4d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2e4d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2e4d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2e4d18,ffff80003c4696b0,ffff80003c469600) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4696b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4696b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73f8ac94f660, 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(0xfffffd806b9d19a0, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001482000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c469340) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8065cbd060,1,fffffd80097fb4e0,ffff80002a2e4d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b99c2e8,ffff80002a2e4d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b99c2e8,ffff80002a2e4d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2e4d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2e4d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2e4d18,ffff80003c4696b0,ffff80003c469600) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4696b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4696b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73f8ac94f660, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c469270 rbx 0x1 rdx 0 rcx 0xffff80002a2e4d18 rax 0xffffffff837782b0 dt_prov_syscall r8 0xffffffffffffffff r9 0x1 r10 0xc5e3a2371611d5b0 r11 0xe7648bf36448d3c9 r12 0 r13 0 r14 0 r15 0xffff8000014a1400 rip 0xffffffff82fd0f28 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c469240 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=360131 pid=64641 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=69, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2e4d18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2e54e0,0xffff80002a2e42c8 process=0xffff80003b8261d0 user=0xffff80003c464000, vmspace=0xfffffd806b9d19a0 estcpu=19, cpticks=3, pctcpu=0.1, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23710 308251 63087 0 2 0 syz-executor 23710 507986 63087 0 3 0x4000080 fsleep syz-executor 7273 271310 45883 0 3 0x80 nanoslp syz-executor 7273 456943 45883 0 3 0x4000080 msgwait syz-executor 7273 249800 45883 0 3 0x4000080 fsleep syz-executor 69938 501275 15817 0 3 0x80 nanoslp syz-executor 69938 56475 15817 0 3 0x4000080 kqsel syz-executor 69938 320792 15817 0 3 0x4000080 fsleep syz-executor 90169 208348 39289 0 3 0x80 nanoslp syz-executor 90169 209530 39289 0 3 0x4000080 nanoslp syz-executor 26845 474749 49717 0 2 0 syz-executor 26845 367299 49717 0 3 0x4000080 fsleep syz-executor 26845 20603 49717 0 3 0x4000080 fsleep syz-executor 41977 15185 40789 0 3 0x80 nanoslp syz-executor 41977 336062 40789 0 3 0x4000080 ttyin syz-executor 41977 225488 40789 0 3 0x4000080 fsleep syz-executor 46789 331363 18629 0 2 0 syz-executor 46789 493534 18629 0 3 0x4000000 biowait syz-executor 46789 462936 18629 0 3 0x4000000 fltagain2 syz-executor 46789 389157 18629 0 3 0x4000080 pipeiolk syz-executor 46789 363766 18629 0 3 0x4000000 pipecl syz-executor 46789 11240 18629 0 2 0x4000000 syz-executor 15817 441901 80053 0 3 0x82 nanoslp syz-executor 40789 138298 80053 0 3 0x82 nanoslp syz-executor 63087 198357 80053 0 3 0x82 nanoslp syz-executor 18629 49662 80053 0 3 0x82 nanoslp syz-executor 36167 409886 80053 0 2 0x2 syz-executor 45883 37941 80053 0 3 0x82 nanoslp syz-executor 49717 123946 80053 0 3 0x82 nanoslp syz-executor 39289 124991 80053 0 3 0x82 nanoslp syz-executor 80053 55077 92003 0 3 0x82 kqread syz-executor 92003 153042 3032 0 3 0x10008a sigsusp ksh 3032 493498 69730 0 3 0x98 kqread sshd-session 69730 101327 408 0 3 0x92 kqread sshd-session 98726 83344 1 0 3 0x100083 ttyin getty 408 382483 1 0 3 0x88 kqread sshd 11358 343173 32446 74 3 0x1100092 bpf pflogd 32446 4834 1 0 3 0x80 sbwait pflogd 51534 65212 95832 73 3 0x1100090 kqread syslogd 95832 126450 1 0 3 0x100082 sbwait syslogd 32822 187475 1 0 3 0x100080 kqread resolvd 26517 151667 87498 77 3 0x100092 kqread dhcpleased 35415 140754 87498 77 3 0x100092 kqread dhcpleased 87498 293309 1 0 3 0x80 kqread dhcpleased 62781 239087 0 0 3 0x14200 bored smr 13146 155154 0 0 2 0x14200 zerothread 43370 255599 0 0 3 0x14200 aiodoned aiodoned 6416 245212 0 0 3 0x14200 syncer update 52030 357452 0 0 3 0x14200 cleaner cleaner 10877 406000 0 0 7 0x14200 reaper 90113 57669 0 0 3 0x14200 pgdaemon pagedaemon 88566 38270 0 0 3 0x14200 bored viomb 66013 165044 0 0 3 0x40014200 acpi0 acpi0 86525 357838 0 0 3 0x40014200 idle1 13081 500428 0 0 3 0x14200 bored softnet7 92180 129806 0 0 3 0x14200 bored softnet6 3866 225192 0 0 3 0x14200 bored softnet5 9406 80366 0 0 3 0x14200 bored softnet4 51524 90886 0 0 3 0x14200 bored softnet3 47962 461010 0 0 3 0x14200 bored softnet2 56593 168277 0 0 3 0x14200 bored softnet1 21839 29294 0 0 3 0x14200 bored softnet0 11213 200277 0 0 3 0x14200 bored systqmp 71378 399527 0 0 3 0x14200 bored systq 81566 441193 0 0 3 0x14200 tmoslp softclockmp 45551 470483 0 0 3 0x40014200 tmoslp softclock 78362 138428 0 0 3 0x40014200 idle0 1 375448 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff839c1a70) #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 uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1371 #4 km_free+0x36b sys/uvm/uvm_km.c:827 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 Process 46789 (syz-executor) thread 0xffff80002a2e4020 (493534) exclusive rrwlock inode r = 0 (0xfffffd806f70b8d0) #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:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 11050K 11281K 166960K 11383 0 pcb 19 12K 12K 166960K 35 0 rtable 214 7K 8K 166960K 287 0 pf 38 18K 18K 166960K 61 0 ifaddr 44 7K 7K 166960K 55 0 ifgroup 59 2K 2K 166960K 71 0 sysctl 1 1K 9K 166960K 5 0 counters 74 37K 37K 166960K 92 0 ioctlops 0 0K 4K 166960K 1498 0 iov 1 2K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1346 85K 85K 166960K 1429 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 234 0 sigio 0 0K 0K 166960K 35 0 proc 72 115K 147K 166960K 545 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 8 0 in_multi 98 7K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 376 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 255 168K 176K 166960K 3911 0 UVM aobj 7 2K 2K 166960K 8 0 pinsyscall 43 86K 103K 166960K 1347 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 15 0K 2K 166960K 37 0 temp 44 8645K 8708K 166960K 11922 0 kqueue 17 24K 30K 166960K 43 0 SYN cache 2 16K 16K 166960K 2 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 40 0 37 1 0 1 1 0 8 0 rtentry 176 97 0 4 5 0 5 5 0 8 0 unpcb 144 399 0 379 6 0 6 6 0 8 5 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 29 0 24 1 0 1 1 0 8 0 arp 128 10 0 1 1 0 1 1 0 8 0 inpcb 328 151 0 139 4 0 4 4 0 8 3 nd6 144 17 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 12 0 9 1 0 1 1 0 8 0 pffrent 40 2 0 2 1 0 1 1 0 8 1 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 24 0 0 1 0 1 1 0 8 0 pfstkey 128 24 0 0 1 0 1 1 0 8 0 pfstate 384 24 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 436 0 3 28 0 28 28 0 8 0 art_table 40 438 0 3 5 0 5 5 0 8 0 art_node 32 97 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 3 0 1 1 0 1 1 0 8 0 shmpl 112 5 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1751 0 237 95 0 95 95 0 8 0 ffsino 296 1751 0 237 117 0 117 117 0 8 0 nchpl 144 2066 0 373 64 0 64 64 0 8 1 uvmvnodes 80 1866 0 0 39 0 39 39 0 8 0 vnodes 216 1866 0 0 104 0 104 104 0 8 0 namei 1024 6348 0 6348 2 0 2 2 0 8 2 percpumem 16 61 0 9 1 0 1 1 0 8 0 kstatmem 264 42 0 12 3 0 3 3 0 8 0 scxspl 216 7748 0 7746 3 2 1 2 1 8 0 plimitpl 152 51 0 30 1 0 1 1 0 8 0 sigapl 424 546 0 492 7 0 7 7 0 8 0 knotepl 120 305 0 0 10 0 10 10 0 8 0 kqueuepl 224 54 0 40 2 0 2 2 0 8 0 pipepl 344 181 0 153 9 0 9 9 0 8 6 fdescpl 528 524 0 492 3 0 3 3 0 8 0 filepl 160 2438 0 2203 20 1 19 20 0 8 8 lockfpl 104 49 0 47 1 0 1 1 0 8 0 lockfspl 48 19 0 17 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 216 0 203 1 0 1 1 0 8 0 zombiepl 144 493 0 492 1 0 1 1 0 8 0 processpl 1232 546 0 492 5 0 5 5 0 8 0 procpl 664 744 0 675 6 0 6 6 0 8 0 sockpl 752 592 0 557 18 2 16 16 0 8 12 mcl64k 65536 2 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 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 165 0 0 11 0 11 11 0 8 0 bufpl 280 3375 0 123 233 0 233 233 0 8 0 anonpl 32 6634 0 0 54 0 54 54 0 246 0 amapchunkpl 152 11013 0 10416 28 3 25 25 0 158 1 amappl16 200 1027 0 927 8 2 6 6 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 115 0 102 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1182 0 1149 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 4 0 3 1 0 1 1 0 8 0 amappl9 144 262 0 261 2 1 1 1 0 8 0 amappl8 136 34 0 32 1 0 1 1 0 8 0 amappl7 128 125 0 113 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 116 0 107 1 0 1 1 0 8 0 amappl4 104 320 0 301 1 0 1 1 0 8 0 amappl3 96 1845 0 1738 3 0 3 3 0 8 0 amappl2 88 762 0 684 2 0 2 2 0 8 0 amappl1 80 8996 0 8381 16 1 15 16 0 8 1 amappl 88 3196 0 3014 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 7 0 1 1 0 1 1 0 8 0 uaddrrnd 24 524 0 492 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 524 0 492 1 0 1 1 0 8 0 vmmpekpl 168 6217 0 6181 2 0 2 2 0 8 0 vmmpepl 168 39226 0 37114 94 0 94 94 0 357 2 vmsppl 488 523 0 492 5 0 5 5 0 8 0 rwobjpl 80 14746 0 11842 60 0 60 60 0 8 0 pdppl 4096 1056 0 984 100 26 74 86 0 8 2 pvpl 32 13371 0 0 109 1 108 108 0 265 0 pmappl 256 523 0 492 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 270 0 28 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378eff0) 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 mtx_enter(ffffffff8377ff70) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8377ffa8,ffffffff8377ff70,4,ffffffff83383345,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc538) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8378eff0) 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 mtx_enter(ffffffff8377ff70) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8377ffa8,ffffffff8377ff70,4,ffffffff83383345,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc538) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001482000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c469340) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8065cbd060,1,fffffd80097fb4e0,ffff80002a2e4d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b99c2e8,ffff80002a2e4d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b99c2e8,ffff80002a2e4d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2e4d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2e4d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2e4d18,ffff80003c4696b0,ffff80003c469600) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4696b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4696b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73f8ac94f660, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001482000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2e4d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c469340) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8065cbd060,1,fffffd80097fb4e0,ffff80002a2e4d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b99c2e8,ffff80002a2e4d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b99c2e8,ffff80002a2e4d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b99c2e8,ffff80002a2e4d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2e4d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2e4d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2e4d18,ffff80003c4696b0,ffff80003c469600) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4696b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4696b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73f8ac94f660, count: -12