uvm_fault(0xfffffd806b1de020, 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 42410 2516 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a323a10) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800ef70a30,1,fffffd80097fb3a8,ffff8000348014b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064c9f6b0,ffff8000348014b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8064c9f6b0,ffff8000348014b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000348014b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000348014b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000348014b8,ffff80002a323d80,ffff80002a323cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a323d80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a323d80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x768ae9d68db0, 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(0xfffffd806b1de020, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a323a10) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800ef70a30,1,fffffd80097fb3a8,ffff8000348014b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064c9f6b0,ffff8000348014b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8064c9f6b0,ffff8000348014b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000348014b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000348014b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000348014b8,ffff80002a323d80,ffff80002a323cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a323d80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a323d80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x768ae9d68db0, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a323940 rbx 0xffffffff82290ee0 dtclose rdx 0 rcx 0xffff8000348014b8 rax 0xffffffff83864b10 dt_prov_static r8 0xffffffffffffffff r9 0x1 r10 0x4123f5e4a96130d0 r11 0xde32ea12c5fcfd70 r12 0xffffffff83865b00 dt_static_refcnt_ifmaddr r13 0 r14 0 r15 0xffff8000014d1b00 rip 0xffffffff822912c0 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a323910 ss 0 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{1}> show proc PROC (syz-executor) tid=50273 pid=96494 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000348014b8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800034800d08,0xffff80002a2eb220 process=0xffff80003c014500 user=0xffff80002a31e000, vmspace=0xfffffd806b1de020 estcpu=36, cpticks=8, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50134 361392 73577 0 2 0 syz-executor 18174 486608 92629 0 2 0 syz-executor 18174 78046 92629 0 3 0x4000080 fifor syz-executor 56580 214697 17245 0 2 0x1000000 syz-executor 56580 198954 17245 0 2 0x5000000 syz-executor 56580 413827 17245 0 3 0x5000000 inode syz-executor 2516 42410 34222 0 7 0 syz-executor 2516 394209 34222 0 3 0x4000080 lockf syz-executor 2516 147033 34222 0 2 0x4000000 syz-executor 96378 410983 1199 0 2 0 syz-executor 96378 71993 1199 0 3 0x4000080 fsleep syz-executor 13003 111832 30061 0 2 0 syz-executor 13003 160043 30061 0 3 0x4000080 ttyout syz-executor 13003 247566 30061 0 3 0x4000080 ttyout syz-executor 13003 22232 30061 0 3 0x4000080 ttyout syz-executor 19702 504987 55459 0 3 0x3000 suspend syz-executor 19702 382592 55459 0 3 0x4081000 biowait syz-executor 55459 479453 14589 0 3 0x82 nanoslp syz-executor 78214 522999 0 0 3 0x14200 acct acct 77854 8565 1 0 3 0x100083 ttyin getty 88417 159579 0 0 3 0x14200 bored sosplice 30061 446905 14589 0 3 0x82 nanoslp syz-executor 34222 196253 14589 0 3 0x82 nanoslp syz-executor 17245 328507 14589 0 3 0x82 nanoslp syz-executor 1199 515145 14589 0 3 0x82 nanoslp syz-executor 73577 369635 14589 0 3 0x82 nanoslp syz-executor 47536 243252 14589 0 3 0x82 nanoslp syz-executor 92629 248704 14589 0 3 0x82 nanoslp syz-executor 14589 505460 78195 0 3 0x82 kqread syz-executor 78195 106825 34207 0 3 0x10008a sigsusp ksh 34207 143208 67767 0 3 0x98 kqread sshd-session 67767 275500 40826 0 3 0x92 kqread sshd-session 40826 35144 1 0 3 0x88 kqread sshd 76470 272410 22437 74 3 0x1100092 bpf pflogd 22437 123974 1 0 3 0x80 sbwait pflogd 4340 206798 27876 73 3 0x1100090 kqread syslogd 27876 197393 1 0 3 0x100082 sbwait syslogd 37064 342720 1 0 3 0x100080 kqread resolvd 22026 324682 9610 77 3 0x100092 kqread dhcpleased 50382 114224 9610 77 3 0x100092 kqread dhcpleased 9610 17709 1 0 3 0x80 kqread dhcpleased 66747 416347 0 0 3 0x14200 bored smr 49722 436051 0 0 2 0x14200 zerothread 92040 51921 0 0 3 0x14200 aiodoned aiodoned 53452 51508 0 0 3 0x14200 syncer update 93171 347412 0 0 3 0x14200 cleaner cleaner 49166 123794 0 0 2 0x14200 reaper 46994 223477 0 0 3 0x14200 pgdaemon pagedaemon 35426 463249 0 0 3 0x14200 bored viomb 69627 244098 0 0 3 0x40014200 acpi0 acpi0 16049 90066 0 0 3 0x40014200 idle1 97701 420553 0 0 3 0x14200 bored softnet7 61762 51265 0 0 3 0x14200 bored softnet6 73440 135993 0 0 3 0x14200 bored softnet5 36449 243125 0 0 3 0x14200 bored softnet4 96335 234205 0 0 3 0x14200 bored softnet3 82702 54244 0 0 3 0x14200 bored softnet2 61716 486704 0 0 3 0x14200 bored softnet1 83631 118932 0 0 3 0x14200 bored softnet0 92023 342136 0 0 3 0x14200 smrbar systqmp 90695 447414 0 0 3 0x14200 bored systq 98772 89000 0 0 3 0x14200 tmoslp softclockmp 75005 146996 0 0 3 0x40014200 tmoslp softclock 79426 208288 0 0 3 0x40014200 idle0 1 510316 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 50134 (syz-executor) thread 0xffff80002a2eb4a0 (361392) Process 56580 (syz-executor) thread 0xffff800034800558 (198954) Process 2516 (syz-executor) thread 0xffff80002a2ea7d0 (147033) Process 19702 (syz-executor) thread 0xffff80002a2ea540 (382592) Process 49166 (reaper) thread 0xffff8000ffffc008 (123794) Process 92023 (systqmp) thread 0xffff8000ffffe7b0 (342136) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11078K 11496K 166960K 14465 0 pcb 17 16K 21K 166960K 629 0 rtable 260 11K 11K 166960K 1009 0 pf 36 18K 67485K 166960K 210 0 ifaddr 46 8K 9K 166960K 121 0 ifgroup 58 2K 2K 166960K 214 0 sysctl 4 1K 9K 166960K 26 0 counters 68 36K 38K 166960K 218 0 ioctlops 0 0K 4K 166960K 1779 0 iov 0 0K 32K 166960K 134 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1411 89K 89K 166960K 3165 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 90 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 1949 0 sigio 1 0K 0K 166960K 32 0 proc 72 115K 180K 166960K 834 0 subproc 72 4K 4K 166960K 91 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 260 0 in_multi 95 7K 7K 166960K 184 0 ether_multi 1 0K 0K 166960K 12 0 mrt 1 0K 0K 166960K 9 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 846 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 245 153K 180K 166960K 19691 0 UVM aobj 31 2K 2K 166960K 31 0 pinsyscall 43 86K 101K 166960K 3119 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 75 0 NDP 12 0K 2K 166960K 82 0 temp 80 8684K 8796K 166960K 70163 0 kqueue 14 22K 35K 166960K 379 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 120 226 0 223 3 2 1 3 0 8 0 rtentry 176 379 0 274 5 0 5 5 0 8 0 unpcb 144 1926 0 1905 22 16 6 6 0 8 5 syncache 336 8 0 8 5 4 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 561 0 553 13 9 4 7 0 8 3 arp 128 95 0 76 1 0 1 1 0 8 0 ipq 40 4 0 2 1 0 1 1 0 8 0 ipqe 40 7 0 5 1 0 1 1 0 8 0 inpcb 328 2272 0 2257 28 18 10 12 0 8 8 ip6q 72 39 0 33 1 0 1 1 0 8 0 ip6af 40 74 0 68 1 0 1 1 0 8 0 nd6 144 26 0 8 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 4 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 55 0 55 3 2 1 1 0 8 1 pppxif 1504 10 0 10 4 4 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 1 1 0 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 16 0 11 1 0 1 1 0 8 0 pfstkey 128 20 0 15 1 0 1 1 0 8 0 pfstate 384 18 0 13 2 1 1 2 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 813 0 341 39 8 31 36 0 8 0 art_table 40 817 0 341 6 0 6 6 0 8 0 art_node 32 377 0 290 3 1 2 3 0 8 0 sysvmsgpl 40 10 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 28 0 0 1 0 1 1 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 4925 0 3417 96 0 96 96 0 8 0 ffsino 296 4925 0 3417 118 0 118 118 0 8 0 nchpl 144 7708 0 7162 64 33 31 64 0 8 7 rtmask 32 4 0 4 4 3 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 27479 0 27479 7 5 2 4 0 8 2 percpumem 16 124 0 75 1 0 1 1 0 8 0 kstatmem 264 126 0 100 6 3 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 12 0 12 4 3 1 1 0 8 1 scxspl 216 49136 0 49135 14 13 1 8 1 8 0 plimitpl 152 454 0 435 1 0 1 1 0 8 0 sigapl 424 2277 0 2221 9 1 8 9 0 8 0 knotepl 120 788 0 0 24 0 24 24 0 8 0 kqueuepl 224 855 0 779 15 10 5 6 0 8 0 pipepl 344 310 0 283 6 3 3 6 0 8 0 fdescpl 528 2226 0 2194 3 0 3 3 0 8 0 filepl 160 15527 0 15201 35 18 17 17 0 8 3 lockfpl 104 1243 0 1238 5 3 2 2 0 8 1 lockfspl 48 535 0 531 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 62 0 45 1 0 1 1 0 8 0 ucredpl 104 2343 0 2329 1 0 1 1 0 8 0 zombiepl 144 2981 0 2980 2 1 1 1 0 8 0 processpl 1248 2277 0 2221 6 1 5 6 0 8 0 procpl 656 5439 0 5372 10 3 7 9 0 8 1 sosppl 168 9 0 9 3 2 1 1 0 8 1 sockpl 752 4517 0 4478 58 41 17 17 0 8 11 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 59 0 0 8 0 8 8 0 8 0 mtagpl 96 41 0 0 1 0 1 1 0 8 0 mbufpl 256 1162 0 0 73 0 73 73 0 8 0 bufpl 280 20054 0 13911 440 0 440 440 0 8 0 anonpl 32 11634 0 0 94 0 94 94 0 246 0 amapchunkpl 152 68965 0 68438 61 28 33 35 0 158 12 amappl16 200 7488 0 7307 60 50 10 27 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 127 0 115 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 2917 0 2885 4 1 3 3 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 45 0 43 1 0 1 1 0 8 0 amappl7 128 122 0 109 1 0 1 1 0 8 0 amappl6 120 200 0 196 1 0 1 1 0 8 0 amappl5 112 131 0 120 1 0 1 1 0 8 0 amappl4 104 323 0 301 1 0 1 1 0 8 0 amappl3 96 13703 0 13583 4 0 4 4 0 8 0 amappl2 88 793 0 729 2 0 2 2 0 8 0 amappl1 80 16665 0 16048 17 2 15 15 0 8 0 amappl 88 18614 0 18442 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 128 258 0 258 5 4 1 1 0 8 1 dma64 64 7 0 7 2 2 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 30 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2226 0 2194 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2226 0 2194 1 0 1 1 0 8 0 vmmpekpl 168 18706 0 18663 3 0 3 3 0 8 0 vmmpepl 168 144747 0 142532 129 28 101 112 0 357 4 vmsppl 488 2225 0 2194 6 1 5 5 0 8 0 rwobjpl 80 44262 0 37201 145 0 145 145 0 8 0 pdppl 4096 4460 0 4388 114 42 72 86 0 8 0 pvpl 32 21912 0 0 177 0 177 177 0 265 0 pmappl 256 2225 0 2194 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 386 0 70 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837feff0) 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(ffffffff83927370) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83927370) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000303ef9e0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x6fcfc827e470, count: 9 ddb{0}> trace x86_ipi_db(ffffffff837feff0) 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(ffffffff83927370) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83927370) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000303ef9e0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x6fcfc827e470, count: -6 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a323a10) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800ef70a30,1,fffffd80097fb3a8,ffff8000348014b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064c9f6b0,ffff8000348014b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8064c9f6b0,ffff8000348014b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000348014b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000348014b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000348014b8,ffff80002a323d80,ffff80002a323cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a323d80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a323d80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x768ae9d68db0, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000348014b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a323a10) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800ef70a30,1,fffffd80097fb3a8,ffff8000348014b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064c9f6b0,ffff8000348014b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064c9f6b0,ffff8000348014b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8064c9f6b0,ffff8000348014b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000348014b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000348014b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000348014b8,ffff80002a323d80,ffff80002a323cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a323d80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a323d80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x768ae9d68db0, count: -12