uvm_fault(0xfffffd805ee66b98, 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 474497 97598 0 0 0 0 syz-executor *153869 97598 0 0 0x4000000 1K syz-executor dt_ioctl_record_stop(ffff8000016a2000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c44edf0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8076c7e8b0,81,fffffd80097fd340,ffff8000fffee548) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651f7658,ffff8000fffee548) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd80651f7658,ffff8000fffee548) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c44f050) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44f050) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81df79670, count: 6 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(0xfffffd805ee66b98, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff8000016a2000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c44edf0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8076c7e8b0,81,fffffd80097fd340,ffff8000fffee548) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651f7658,ffff8000fffee548) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd80651f7658,ffff8000fffee548) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c44f050) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44f050) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81df79670, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c44ed20 rbx 0x1 rdx 0 rcx 0xffff8000fffee548 rax 0xffffffff83915a98 dt_prov_syscall r8 0xffffffff82c816a0 uvm_map_inentry_sp r9 0x1 r10 0 r11 0x9f992e4fc66616eb r12 0 r13 0 r14 0 r15 0xffff800001614200 rip 0xffffffff828e91b8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c44ecf0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=153869 pid=97598 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffef770,0xffff8000fffef250 process=0xffff80003aff5360 user=0xffff80003c44a000, vmspace=0xfffffd805ee66b98 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97598 474497 33129 0 7 0 syz-executor *97598 153869 33129 0 7 0x4000000 syz-executor 97598 106179 33129 0 3 0x4000080 fsleep syz-executor 97598 108614 33129 0 3 0x4000080 fsleep syz-executor 63124 425603 1062 0 3 0x3000 suspend syz-executor 63124 435506 1062 0 3 0x4081000 biowait syz-executor 63124 85166 1062 0 3 0x4081000 inode syz-executor 63124 263645 1062 0 3 0x4081000 inode syz-executor 51543 355823 76077 0 3 0x90 nanoslp syz-executor 51543 263360 76077 0 3 0x4000090 piperd syz-executor 51543 149824 76077 0 3 0x4000090 fsleep syz-executor 51543 424333 76077 0 3 0x4000090 piperd syz-executor 32566 155129 37440 0 3 0x80 nanoslp syz-executor 32566 125319 37440 0 3 0x4000080 kqsel syz-executor 32566 341753 37440 0 3 0x4000080 kqsel syz-executor 32566 414365 37440 0 3 0x4000080 fsleep syz-executor 53238 77110 83811 0 3 0x80 nanoslp syz-executor 53238 517136 83811 0 3 0x4000000 biowait syz-executor 53238 78433 83811 0 3 0x4000080 fsleep syz-executor 53238 316933 83811 0 3 0x4000080 fsleep syz-executor 61373 99207 0 0 3 0x14200 acct acct 36098 218246 18884 0 3 0x82 wait syz-executor 26244 326465 1 0 3 0x100083 ttyopn getty 76077 24506 18884 0 3 0x82 nanoslp syz-executor 97463 506577 18884 0 3 0x2 biowait syz-executor 37440 152886 18884 0 3 0x82 nanoslp syz-executor 17945 24165 18884 0 3 0x82 nanoslp syz-executor 33129 298039 18884 0 3 0x82 nanoslp syz-executor 1062 348460 18884 0 3 0x82 nanoslp syz-executor 83811 429684 18884 0 3 0x82 nanoslp syz-executor 18884 489676 85100 0 3 0x82 kqread syz-executor 85100 50694 9134 0 3 0x10008a sigsusp ksh 9134 117752 92712 0 3 0x98 kqread sshd-session 92712 28156 21491 0 3 0x92 kqread sshd-session 21491 475625 1 0 3 0x88 kqread sshd 89693 190427 30768 74 3 0x1100092 bpf pflogd 30768 97194 1 0 3 0x80 sbwait pflogd 6160 507056 82730 73 3 0x1100090 kqread syslogd 82730 474063 1 0 3 0x100082 sbwait syslogd 61643 134557 1 0 3 0x100080 kqread resolvd 30078 511129 43539 77 3 0x100092 kqread dhcpleased 80488 481645 43539 77 3 0x100092 kqread dhcpleased 43539 148448 1 0 3 0x80 kqread dhcpleased 86553 288856 0 0 3 0x14200 bored smr 40067 405618 0 0 3 0x14200 pgzero zerothread 62760 266245 0 0 3 0x14200 aiodoned aiodoned 59404 241925 0 0 3 0x14200 syncer update 59497 323588 0 0 3 0x14200 cleaner cleaner 33133 486126 0 0 3 0x14200 reaper reaper 37260 447106 0 0 3 0x14200 pgdaemon pagedaemon 36035 473648 0 0 3 0x14200 bored viomb 60184 103200 0 0 3 0x40014200 acpi0 acpi0 3864 243083 0 0 3 0x40014200 idle1 18489 80749 0 0 3 0x14200 bored softnet1 28349 400040 0 0 3 0x14200 bored softnet0 41827 328419 0 0 3 0x14200 bored systqmp 71601 45234 0 0 3 0x14200 bored systq 12563 330074 0 0 3 0x14200 tmoslp softclockmp 25129 441337 0 0 3 0x40014200 tmoslp softclock 71622 167734 0 0 3 0x40014200 idle0 1 24452 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 97598 (syz-executor) thread 0xffff8000fffee548 (153869) Process 63124 (syz-executor) thread 0xffff80003c43d258 (435506) Process 63124 (syz-executor) thread 0xffff8000337b6040 (263645) Process 53238 (syz-executor) thread 0xffff80003c43c7f8 (517136) Process 97463 (syz-executor) thread 0xffff8000fffefa08 (506577) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11080 12139K 13850K 166960K 14149 0 pcb 18 18K 23K 166960K 508 0 rtable 201 11K 11K 166960K 574 0 pf 31 17K 18K 166960K 169 0 ifaddr 31 5K 8K 166960K 120 0 ifgroup 47 2K 2K 166960K 205 0 sysctl 4 1K 9K 166960K 83 0 counters 66 36K 37K 166960K 242 0 ioctlops 0 0K 4K 166960K 1906 0 iov 0 0K 20K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1407 89K 89K 166960K 2669 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 124 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 1504 0 sigio 0 0K 0K 166960K 21 0 proc 73 115K 164K 166960K 770 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 153 0 in_multi 54 4K 7K 166960K 172 0 ether_multi 1 0K 0K 166960K 20 0 mrt 0 0K 0K 166960K 42 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 139 625K 625K 166960K 139 0 exec 0 0K 1K 166960K 582 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 261 161K 181K 166960K 15757 0 UVM aobj 25 16K 16K 166960K 27 0 pinsyscall 42 84K 104K 166960K 2759 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 104 0 NDP 10 0K 1K 166960K 87 0 temp 81 9088K 9337K 166960K 74213 0 kqueue 13 20K 31K 166960K 270 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 120 173 0 169 2 1 1 2 0 8 0 rtentry 176 161 0 87 6 0 6 6 0 8 0 unpcb 144 973 0 956 7 5 2 4 0 8 1 syncache 336 9 0 9 4 3 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 532 0 457 20 13 7 7 0 8 0 arp 136 26 0 10 1 0 1 1 0 8 0 inpcb 328 1948 0 1866 17 7 10 10 0 8 3 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 152 33 0 19 2 0 2 2 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 5 0 5 3 2 1 1 0 8 1 ppxss 1192 71 0 71 2 1 1 1 0 8 1 pppxif 1504 4 0 4 4 3 1 1 0 8 1 pffrag 232 18 0 2 1 0 1 1 0 482 0 pffrnode 88 17 0 2 1 0 1 1 0 8 0 pffrent 40 20 0 4 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 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 101 0 44 1 0 1 1 0 8 0 pfstkey 128 101 0 44 2 0 2 2 0 8 0 pfstate 448 101 0 44 7 0 7 7 0 8 0 pfrule 1360 22 0 16 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 667 0 409 31 9 22 31 0 8 2 art_table 40 670 0 409 5 0 5 5 0 8 0 art_node 32 161 0 96 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 3 2 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 55 0 45 1 0 1 1 0 8 0 shmpl 112 18 0 2 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 4330 0 2864 93 0 93 93 0 8 0 ffsino 296 4330 0 2864 114 0 114 114 0 8 0 nchpl 144 6424 0 4719 64 0 64 64 0 8 0 rtmask 32 10 0 10 6 5 1 1 0 8 1 vnodes 216 5073 0 0 282 0 282 282 0 8 0 namei 1024 21806 0 21805 3 2 1 2 0 8 0 percpumem 16 136 0 88 1 0 1 1 0 8 0 vcpupl 3968 6 0 0 1 0 1 1 0 8 0 vmpool 848 6 0 0 1 0 1 1 0 8 0 kstatmem 264 134 0 112 4 2 2 3 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 42365 0 42362 12 10 2 8 1 8 1 plimitpl 152 462 0 444 1 0 1 1 0 8 0 sigapl 424 1832 0 1784 8 1 7 8 0 8 0 knotepl 120 563 0 0 18 0 18 18 0 8 0 kqueuepl 224 534 0 523 8 7 1 5 0 8 0 pipepl 344 256 0 228 3 0 3 3 0 8 0 fdescpl 528 1792 0 1761 3 0 3 3 0 8 0 filepl 160 11391 0 11096 24 8 16 16 0 8 3 lockfpl 104 667 0 665 1 0 1 1 0 8 0 lockfspl 48 254 0 252 1 0 1 1 0 8 0 sessionpl 144 32 0 23 1 0 1 1 0 8 0 pgrppl 48 102 0 85 1 0 1 1 0 8 0 ucredpl 104 1841 0 1825 1 0 1 1 0 8 0 zombiepl 144 2606 0 2603 1 0 1 1 0 8 0 processpl 1232 1832 0 1784 6 1 5 6 0 8 0 procpl 664 4260 0 4197 9 3 6 8 0 8 0 sosppl 176 8 0 8 3 3 0 1 0 8 0 sockpl 752 3159 0 3056 28 16 12 17 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 51 0 0 7 0 7 7 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 4541 0 0 282 0 282 282 0 8 0 bufpl 280 17062 0 10932 439 0 439 439 0 8 0 anonpl 32 11456 0 0 93 0 93 93 0 246 0 amapchunkpl 152 52251 0 51572 48 15 33 33 0 158 4 amappl16 200 6294 0 6253 52 37 15 28 0 8 8 amappl15 192 73 0 73 1 1 0 1 0 8 0 amappl14 184 462 0 460 1 0 1 1 0 8 0 amappl13 176 142 0 130 1 0 1 1 0 8 0 amappl12 168 2065 0 2035 2 0 2 2 0 8 0 amappl11 160 10 0 10 1 1 0 1 0 8 0 amappl10 152 69 0 55 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 1 0 1 0 8 0 amappl8 136 112 0 109 1 0 1 1 0 8 0 amappl7 128 167 0 154 1 0 1 1 0 8 0 amappl6 120 226 0 224 1 0 1 1 0 8 0 amappl5 112 113 0 102 1 0 1 1 0 8 0 amappl4 104 333 0 312 1 0 1 1 0 8 0 amappl3 96 10848 0 10724 4 0 4 4 0 8 0 amappl2 88 630 0 568 2 0 2 2 0 8 0 amappl1 80 17453 0 16842 24 7 17 17 0 8 3 amappl 88 14682 0 14494 5 0 5 5 0 92 0 uvmvnodes 80 157 0 0 4 0 4 4 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 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 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 73 0 73 4 3 1 1 0 8 1 dma128 128 255 0 255 3 3 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 26 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1792 0 1761 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1792 0 1761 1 0 1 1 0 8 0 vmmpekpl 168 16555 0 16512 3 0 3 3 0 8 0 vmmpepl 168 122375 0 120386 117 14 103 109 0 357 6 vmsppl 488 1791 0 1761 6 1 5 5 0 8 0 rwobjpl 80 35575 0 34410 35 4 31 33 0 8 0 pdppl 4096 3603 0 3528 126 49 77 83 0 8 2 pvpl 32 19610 0 0 159 0 159 159 0 265 0 pmappl 256 1797 0 1761 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 614 0 86 16 0 16 16 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83946ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff839acc00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839acc00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c41d160,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x744d6107d810, count: 8 ddb{0}> trace x86_ipi_db(ffffffff83946ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff839acc00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839acc00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c41d160,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x744d6107d810, count: -7 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff8000016a2000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c44edf0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8076c7e8b0,81,fffffd80097fd340,ffff8000fffee548) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651f7658,ffff8000fffee548) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd80651f7658,ffff8000fffee548) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c44f050) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44f050) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81df79670, count: 6 ddb{1}> trace dt_ioctl_record_stop(ffff8000016a2000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffee548) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c44edf0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8076c7e8b0,81,fffffd80097fd340,ffff8000fffee548) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651f7658,ffff8000fffee548) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651f7658,ffff8000fffee548) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd80651f7658,ffff8000fffee548) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c44f050) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44f050) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81df79670, count: -9