uvm_fault(0xfffffd806b9d45d0, 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 162540 81070 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff8000013fb000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c447380) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8077098960,81,fffffd80097fb7b8,ffff80003c483cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068bc4d80,ffff80003c483cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068bc4d80,ffff80003c483cb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c483cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c483cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c483cb8,ffff80003c4476f0,ffff80003c447640) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4476f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4476f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dc4ddc18d10, 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(0xfffffd806b9d45d0, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff8000013fb000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c447380) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8077098960,81,fffffd80097fb7b8,ffff80003c483cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068bc4d80,ffff80003c483cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068bc4d80,ffff80003c483cb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c483cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c483cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c483cb8,ffff80003c4476f0,ffff80003c447640) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4476f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4476f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dc4ddc18d10, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4472b0 rbx 0x1 rdx 0 rcx 0xffff80003c483cb8 rax 0xffffffff837782b0 dt_prov_syscall r8 0 r9 0 r10 0xc0e91c3eb777ddc4 r11 0x9b4c3f236703b620 r12 0 r13 0 r14 0 r15 0xffff8000014b5f00 rip 0xffffffff82fd0f28 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c447280 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=414796 pid=10208 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c483cb8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4827f8,0xffff80003c483500 process=0xffff80002a2a5cf0 user=0xffff80003c442000, vmspace=0xfffffd806b9d45d0 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81070 162540 77169 0 7 0 syz-executor 25538 367688 24131 0 2 0 syz-executor 25538 276282 24131 0 2 0x4000000 syz-executor 78588 150586 18378 0 2 0 syz-executor 78588 366377 18378 0 3 0x4000080 fsleep syz-executor 78588 410395 18378 0 3 0x4000080 fsleep syz-executor 78588 51541 18378 0 3 0x4000080 fsleep syz-executor 50464 200841 9122 0 2 0 syz-executor 50464 513000 9122 0 3 0x4000080 fsleep syz-executor 50464 407799 9122 0 3 0x4000080 fsleep syz-executor 61744 513686 43981 0 3 0x80 nanoslp syz-executor 61744 398443 43981 0 3 0x4000080 kqsel syz-executor 61744 135001 43981 0 3 0x4000080 fsleep syz-executor 89188 74753 11431 0 3 0x3000 suspend syz-executor 89188 289224 11431 0 3 0x4081000 biowait syz-executor 77169 48783 60694 0 3 0x82 nanoslp syz-executor 73756 432210 1 0 3 0x100083 ttyin getty 35435 189537 0 0 3 0x14200 acct acct 9122 44109 60694 0 3 0x82 nanoslp syz-executor 43981 521591 60694 0 3 0x82 nanoslp syz-executor 12324 42160 60694 0 3 0x82 nanoslp syz-executor 11431 339791 60694 0 3 0x82 nanoslp syz-executor 18378 161128 60694 0 3 0x82 nanoslp syz-executor 66269 453554 0 0 3 0x14200 bored sosplice 74536 477805 60694 0 3 0x2 biowait syz-executor 24131 229327 60694 0 3 0x82 nanoslp syz-executor 60694 48158 49088 0 3 0x82 kqread syz-executor 49088 36438 37093 0 3 0x10008a sigsusp ksh 37093 70321 80015 0 3 0x98 kqread sshd-session 80015 418264 16768 0 3 0x92 kqread sshd-session 16768 362251 1 0 3 0x88 kqread sshd 96317 486221 56255 74 3 0x1100092 bpf pflogd 56255 26343 1 0 3 0x80 sbwait pflogd 35486 479257 88609 73 3 0x1100090 kqread syslogd 88609 23189 1 0 3 0x100082 sbwait syslogd 70267 485903 1 0 3 0x100080 kqread resolvd 3766 358391 19592 77 3 0x100092 kqread dhcpleased 83895 330043 19592 77 3 0x100092 kqread dhcpleased 19592 289197 1 0 3 0x80 kqread dhcpleased 3596 424751 0 0 3 0x14200 bored smr 59740 57414 0 0 2 0x14200 zerothread 96674 37624 0 0 3 0x14200 aiodoned aiodoned 82693 398314 0 0 3 0x14200 syncer update 77727 12884 0 0 3 0x14200 cleaner cleaner 64312 410362 0 0 3 0x14200 reaper reaper 80527 287310 0 0 3 0x14200 pgdaemon pagedaemon 94671 80491 0 0 3 0x14200 bored viomb 28266 165056 0 0 3 0x40014200 acpi0 acpi0 35088 272782 0 0 3 0x40014200 idle1 27706 23670 0 0 3 0x14200 bored softnet7 45581 40231 0 0 3 0x14200 bored softnet6 47856 130732 0 0 3 0x14200 bored softnet5 20004 451469 0 0 3 0x14200 bored softnet4 46005 185261 0 0 3 0x14200 bored softnet3 58867 411215 0 0 3 0x14200 bored softnet2 84566 94286 0 0 3 0x14200 bored softnet1 74150 85880 0 0 3 0x14200 bored softnet0 85032 132401 0 0 3 0x14200 bored systqmp 41088 5035 0 0 3 0x14200 bored systq 45237 152865 0 0 3 0x14200 tmoslp softclockmp 52422 326997 0 0 3 0x40014200 tmoslp softclock 74498 33193 0 0 3 0x40014200 idle0 1 206260 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 81070 (syz-executor) thread 0xffff80002a3e6fc8 (162540) Process 25538 (syz-executor) thread 0xffff800033408020 (276282) Process 89188 (syz-executor) thread 0xffff80002a3e62d0 (289224) Process 74536 (syz-executor) thread 0xffff8000ffff2010 (477805) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10268 11135K 11798K 166960K 14338 0 pcb 18 18K 26K 166960K 849 0 rtable 200 14K 15K 166960K 723 0 pf 42 19K 67485K 166960K 349 0 ifaddr 35 7K 8K 166960K 202 0 ifgroup 63 2K 2K 166960K 367 0 sysctl 4 1K 17K 166960K 35 0 counters 72 37K 38K 166960K 490 0 ioctlops 0 0K 4K 166960K 2387 0 iov 0 0K 28K 166960K 346 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1620 102K 102K 166960K 4228 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 12 0K 0K 166960K 248 0 dirhash 12 2K 2K 166960K 81 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 3070 0 sigio 0 0K 0K 166960K 109 0 proc 72 115K 196K 166960K 1096 0 subproc 72 4K 4K 166960K 128 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 543 0 in_multi 51 3K 7K 166960K 268 0 ether_multi 1 0K 0K 166960K 41 0 mrt 3 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 904 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 9 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 176K 199K 166960K 29322 0 UVM aobj 32 2K 2K 166960K 34 0 pinsyscall 42 84K 98K 166960K 4362 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 301 0 NDP 14 0K 2K 166960K 157 0 temp 86 8656K 8770K 166960K 140112 0 kqueue 14 22K 32K 166960K 627 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 120 367 0 364 4 3 1 3 0 8 0 rtentry 176 217 0 154 5 0 5 5 0 8 0 unpcb 144 2452 0 2433 13 11 2 6 0 8 1 syncache 336 23 0 23 6 5 1 1 0 8 1 tcpqe 32 6 0 6 2 2 0 1 0 8 0 tcpcb 736 1064 0 1058 17 16 1 7 0 8 0 arp 128 28 0 16 1 0 1 1 0 8 0 inpcb 328 3817 0 3802 37 35 2 13 0 8 0 nd6 144 40 0 26 1 0 1 1 0 8 0 pkpcb 40 24 0 23 4 3 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 2 0 1 0 8 0 ppxss 1192 181 0 181 4 3 1 1 0 8 1 pppxif 1504 39 0 39 5 5 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 15 0 10 1 0 1 1 0 482 0 pffrnode 88 15 0 10 1 0 1 1 0 8 0 pffrent 40 28 0 23 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 5 0 5 3 3 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 243 0 102 1 0 1 1 0 8 0 pfstkey 128 249 0 109 5 0 5 5 0 8 0 pfstate 384 245 0 106 15 0 15 15 0 8 0 pfrule 1344 37 0 33 2 1 1 2 0 8 0 rttmr 136 4 0 4 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 949 0 678 31 11 20 28 0 8 0 art_table 40 953 0 678 5 0 5 5 0 8 0 art_node 32 211 0 161 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 9 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 239 0 229 1 0 1 1 0 8 0 shmpl 112 31 0 2 1 0 1 1 0 8 0 dirhash 1024 63 0 46 3 0 3 3 0 8 0 dino2pl 256 7401 0 5878 96 0 96 96 0 8 0 ffsino 296 7401 0 5878 119 1 118 118 0 8 0 nchpl 144 11718 0 11151 64 39 25 64 0 8 0 rtmask 32 35 0 35 5 4 1 1 0 8 1 uvmvnodes 80 8962 0 0 183 0 183 183 0 8 0 vnodes 216 8962 0 0 498 0 498 498 0 8 0 namei 1024 42082 0 42081 5 3 2 2 0 8 1 percpumem 16 260 0 209 1 0 1 1 0 8 0 kstatmem 264 264 0 230 5 2 3 3 0 8 0 scsiplug 72 12 0 12 7 6 1 1 0 8 1 scxspl 216 62389 0 62387 15 12 3 8 1 8 2 plimitpl 152 644 0 625 1 0 1 1 0 8 0 sigapl 424 3377 0 3322 9 1 8 9 0 8 0 knotepl 120 800 0 0 23 0 23 23 0 8 0 kqueuepl 224 1477 0 1465 17 12 5 7 0 8 3 pipepl 344 569 0 541 6 3 3 6 0 8 0 fdescpl 528 3324 0 3293 3 0 3 3 0 8 0 filepl 160 24230 0 24004 24 10 14 19 0 8 0 lockfpl 104 1310 0 1308 2 1 1 2 0 8 0 lockfspl 48 511 0 509 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 127 0 110 1 0 1 1 0 8 0 ucredpl 104 4021 0 4005 1 0 1 1 0 8 0 zombiepl 144 3425 0 3423 2 1 1 1 0 8 0 processpl 1232 3377 0 3322 6 1 5 6 0 8 0 procpl 664 8295 0 8231 9 1 8 9 0 8 0 sosppl 168 23 0 23 3 3 0 1 0 8 0 sockpl 752 6768 0 6730 52 46 6 18 0 8 1 mcl64k 65536 26 0 0 4 0 4 4 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 145 0 0 18 1 17 18 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 39 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 1151 0 0 72 0 72 72 0 8 0 bufpl 280 24132 0 17989 440 0 440 440 0 8 0 anonpl 32 11753 0 0 96 1 95 95 0 246 0 amapchunkpl 152 101676 0 101118 70 40 30 39 0 158 5 amappl16 200 8163 0 8129 64 50 14 28 0 8 5 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 158 0 146 1 0 1 1 0 8 0 amappl13 176 4 0 3 1 0 1 1 0 8 0 amappl12 168 4074 0 4044 3 1 2 2 0 8 0 amappl11 160 93 0 77 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 19 0 16 1 0 1 1 0 8 0 amappl7 128 146 0 133 1 0 1 1 0 8 0 amappl6 120 259 0 255 1 0 1 1 0 8 0 amappl5 112 146 0 136 1 0 1 1 0 8 0 amappl4 104 371 0 350 1 0 1 1 0 8 0 amappl3 96 17970 0 17868 3 0 3 3 0 8 0 amappl2 88 3683 0 3601 2 0 2 2 0 8 0 amappl1 80 24219 0 23614 16 1 15 15 0 8 0 amappl 88 27901 0 27728 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 2 1 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 4 3 1 1 0 8 1 dma64 64 8 0 8 3 3 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 33 0 2 1 0 1 1 0 8 0 uaddrrnd 24 3324 0 3293 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3324 0 3293 1 0 1 1 0 8 0 vmmpekpl 168 27604 0 27547 4 0 4 4 0 8 0 vmmpepl 168 211214 0 209180 130 27 103 111 0 357 1 vmsppl 488 3323 0 3293 5 0 5 5 0 8 0 rwobjpl 80 61554 0 51598 209 5 204 204 0 8 0 pdppl 4096 6656 0 6586 130 58 72 82 0 8 2 pvpl 32 19714 0 0 160 1 159 159 0 265 0 pmappl 256 3323 0 3293 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 405 0 102 9 0 9 9 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 __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c464ee0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f alltraps() at alltraps+0x135 end of kernel end trace frame: 0x71d24da29b90, count: 8 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 __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c464ee0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f alltraps() at alltraps+0x135 end of kernel end trace frame: 0x71d24da29b90, count: -7 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff8000013fb000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c447380) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8077098960,81,fffffd80097fb7b8,ffff80003c483cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068bc4d80,ffff80003c483cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068bc4d80,ffff80003c483cb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c483cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c483cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c483cb8,ffff80003c4476f0,ffff80003c447640) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4476f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4476f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dc4ddc18d10, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff8000013fb000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c483cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c447380) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8077098960,81,fffffd80097fb7b8,ffff80003c483cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068bc4d80,ffff80003c483cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068bc4d80,ffff80003c483cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068bc4d80,ffff80003c483cb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c483cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c483cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c483cb8,ffff80003c4476f0,ffff80003c447640) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4476f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4476f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dc4ddc18d10, count: -12