uvm_fault(0xfffffd806c99ad70, 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 117341 65643 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff80000165c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c43da60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d75a7c8,1,fffffd80097fd410,ffff8000fffe8020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80773388d8,ffff8000fffe8020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80773388d8,ffff8000fffe8020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8020,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8020,ffff80003c43ddd0,ffff80003c43dd20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43ddd0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43ddd0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f601f378a20, 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(0xfffffd806c99ad70, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff80000165c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c43da60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d75a7c8,1,fffffd80097fd410,ffff8000fffe8020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80773388d8,ffff8000fffe8020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80773388d8,ffff8000fffe8020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8020,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8020,ffff80003c43ddd0,ffff80003c43dd20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43ddd0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43ddd0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f601f378a20, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c43d990 rbx 0x1 rdx 0 rcx 0xffff8000fffe8020 rax 0xffffffff837d6fd0 dt_prov_syscall r8 0xffffffffffffffff r9 0x1 r10 0x9fc669425962fbef r11 0x5065424dbb485493 r12 0 r13 0 r14 0 r15 0xffff8000016ef900 rip 0xffffffff815dc978 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c43d960 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=343733 pid=10675 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe8020 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe9778,0xffff8000fffe8d28 process=0xffff80002a3349d0 user=0xffff80003c438000, vmspace=0xfffffd806c99ad70 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7942 88994 17335 0 2 0x100002 sh 1034 471899 75779 0 2 0 syz-executor 74182 489126 96653 0 2 0 syz-executor 74182 305568 96653 0 3 0x4000080 fsleep syz-executor 65643 117341 91372 0 7 0 syz-executor 65643 195040 91372 0 3 0x4000080 kqread syz-executor 12854 370119 10043 60929 2 0x10 syz-executor 12854 266322 10043 60929 3 0x4000090 fsleep syz-executor 26946 142462 10136 -1 2 0x10 syz-executor 26946 410523 10136 -1 3 0x4000090 sbwait syz-executor 26946 99259 10136 -1 2 0x4000010 syz-executor 17335 17412 85917 0 3 0x82 wait syz-executor 32746 79113 85917 0 3 0x82 nanoslp syz-executor 44366 345204 0 0 3 0x14280 nfsidl nfsio 5013 156458 0 0 3 0x14280 nfsidl nfsio 85344 492760 0 0 3 0x14280 nfsidl nfsio 2740 178059 0 0 3 0x14280 nfsidl nfsio 38272 380296 85917 0 3 0x10000082 nanoslp syz-executor 10136 247265 85917 0 3 0x82 nanoslp syz-executor 91372 233053 85917 0 3 0x82 nanoslp syz-executor 75779 290462 85917 0 3 0x82 nanoslp syz-executor 10043 181677 85917 0 3 0x82 nanoslp syz-executor 96653 177073 85917 0 3 0x82 nanoslp syz-executor 85917 244083 33751 0 2 0x2 syz-executor 33751 237058 27800 0 3 0x10008a sigsusp ksh 27800 67216 62419 0 3 0x98 kqread sshd-session 62419 392716 11218 0 3 0x92 kqread sshd-session 42688 78206 1 0 3 0x100083 ttyopn getty 11218 271443 1 0 3 0x88 kqread sshd 14053 455995 11702 74 3 0x1100092 bpf pflogd 11702 86164 1 0 3 0x80 sbwait pflogd 89334 8279 51031 73 3 0x1100090 kqread syslogd 51031 156714 1 0 3 0x100082 sbwait syslogd 42091 66512 1 0 3 0x100080 kqread resolvd 75787 13615 17299 77 3 0x100092 kqread dhcpleased 85057 474161 17299 77 3 0x100092 kqread dhcpleased 17299 510009 1 0 3 0x80 kqread dhcpleased 69849 375551 0 0 3 0x14200 bored smr 58132 176213 0 0 2 0x14200 zerothread 45747 413027 0 0 3 0x14200 aiodoned aiodoned 15595 419323 0 0 3 0x14200 syncer update 51765 382057 0 0 3 0x14200 cleaner cleaner 50444 270782 0 0 3 0x14200 reaper reaper 82546 185227 0 0 3 0x14200 pgdaemon pagedaemon 59950 390551 0 0 3 0x14200 bored viomb 42658 454967 0 0 3 0x40014200 acpi0 acpi0 70203 111844 0 0 3 0x40014200 idle1 67488 515454 0 0 3 0x14200 bored softnet1 91904 303616 0 0 3 0x14200 bored softnet0 15338 261263 0 0 3 0x14200 bored systqmp 74521 161674 0 0 3 0x14200 bored systq 97221 172538 0 0 3 0x14200 tmoslp softclockmp 98168 47050 0 0 3 0x40014200 tmoslp softclock 73744 484074 0 0 3 0x40014200 idle0 1 231009 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 26946 (syz-executor) thread 0xffff8000fffe94e0 (410523) exclusive rwlock sbufrcv r = 0 (0xffff800010fdb358) #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 sblock+0xb6 sys/kern/uipc_socket2.c:536 #3 soreceive+0x27d sys/kern/uipc_socket.c:890 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvmmsg+0x410 sys/kern/uipc_syscalls.c:969 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11102 12202K 12446K 166960K 14092 0 pcb 19 16K 31K 166960K 535 0 rtable 246 14K 15K 166960K 1321 0 pf 42 19K 83K 166960K 273 0 ifaddr 40 7K 9K 166960K 237 0 ifgroup 56 2K 3K 166960K 359 0 sysctl 4 1K 9K 166960K 12 0 counters 70 37K 38K 166960K 346 0 ioctlops 0 0K 4K 166960K 1973 0 iov 1 4K 24K 166960K 166 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1582 99K 100K 166960K 3185 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 116 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2185 0 sigio 0 0K 0K 166960K 36 0 proc 73 115K 180K 166960K 1345 0 subproc 72 4K 4K 166960K 288 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 439 0 in_multi 80 5K 7K 166960K 446 0 ether_multi 1 0K 0K 166960K 30 0 mrt 2 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 1128 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 241 169K 188K 166960K 20528 0 UVM aobj 75 21K 21K 166960K 83 0 pinsyscall 42 84K 102K 166960K 3924 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 173 0 NDP 12 0K 2K 166960K 172 0 temp 79 8684K 8775K 166960K 66885 0 kqueue 15 24K 34K 166960K 370 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 120 276 0 273 3 2 1 3 0 8 0 rtentry 176 421 0 331 6 0 6 6 0 8 0 unpcb 144 1678 0 1657 11 10 1 5 0 8 0 syncache 336 7 0 7 3 3 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 620 0 611 12 11 1 7 0 8 0 arp 136 75 0 58 1 0 1 1 0 8 0 inpcb 328 2120 0 2106 32 29 3 13 0 8 1 nd6 152 98 0 77 2 0 2 2 0 8 0 pkpcb 40 12 0 12 4 4 0 1 0 8 0 kcovpl 48 32 0 24 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 2 0 1 0 8 0 ppxss 1192 89 0 89 4 4 0 1 0 8 0 pppxif 1504 8 0 8 4 4 0 1 0 8 0 pffrag 232 53 0 41 1 0 1 1 0 482 0 pffrnode 88 49 0 40 1 0 1 1 0 8 0 pffrent 40 94 0 82 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 11 0 6 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 4 0 1 1 0 1 1 0 8 0 pfstkey 128 13 0 10 1 0 1 1 0 8 0 pfstate 448 7 0 5 1 0 1 1 0 8 0 pfrule 1360 59 0 35 3 0 3 3 0 8 0 rttmr 136 4 0 4 3 2 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1828 0 1476 38 8 30 30 0 8 2 art_table 40 1832 0 1476 5 0 5 5 0 8 0 art_node 32 420 0 345 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 108 0 98 1 0 1 1 0 8 0 shmpl 112 69 0 5 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 4855 0 3308 97 0 97 97 0 8 0 ffsino 296 4855 0 3308 120 0 120 120 0 8 0 nchpl 144 7389 0 5622 66 0 66 66 0 8 0 rtmask 32 17 0 17 3 3 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 28552 0 28552 5 3 2 2 0 8 2 percpumem 16 188 0 138 1 0 1 1 0 8 0 vcpupl 3968 10 0 2 1 0 1 1 0 8 0 vmpool 848 11 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 218 0 192 7 4 3 3 0 8 1 scsiplug 72 11 0 11 6 6 0 1 0 8 0 scxspl 216 55963 0 55963 20 19 1 8 1 8 1 plimitpl 152 709 0 692 1 0 1 1 0 8 0 sigapl 424 2454 0 2402 10 4 6 8 0 8 0 knotepl 120 536 0 0 16 0 16 16 0 8 0 kqueuepl 224 727 0 716 7 6 1 5 0 8 0 pipepl 344 584 0 557 21 18 3 9 0 8 0 fdescpl 528 2413 0 2382 3 0 3 3 0 8 0 filepl 160 15649 0 15428 33 20 13 20 0 8 1 lockfpl 104 616 0 613 1 0 1 1 0 8 0 lockfspl 48 255 0 252 1 0 1 1 0 8 0 sessionpl 144 49 0 40 1 0 1 1 0 8 0 pgrppl 48 135 0 118 1 0 1 1 0 8 0 ucredpl 104 2396 0 2381 1 0 1 1 0 8 0 zombiepl 144 2605 0 2603 1 0 1 1 0 8 0 processpl 1232 2454 0 2402 7 2 5 6 0 8 0 procpl 664 5310 0 5253 9 3 6 8 0 8 0 sosppl 176 11 0 11 6 5 1 1 0 8 1 sockpl 752 4201 0 4163 55 50 5 25 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 49 0 0 6 0 6 6 0 8 0 mtagpl 96 38 0 0 1 0 1 1 0 8 0 mbufpl 256 1220 0 0 76 0 76 76 0 8 0 bufpl 280 24285 0 18149 439 0 439 439 0 8 0 anonpl 32 11965 0 0 97 0 97 97 0 246 0 amapchunkpl 152 68827 0 68370 48 27 21 33 0 158 1 amappl16 200 7927 0 7899 74 59 15 25 0 8 6 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 716 0 714 1 0 1 1 0 8 0 amappl12 168 2922 0 2881 3 0 3 3 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 69 0 55 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 178 0 176 1 0 1 1 0 8 0 amappl6 120 569 0 554 1 0 1 1 0 8 0 amappl5 112 97 0 86 1 0 1 1 0 8 0 amappl4 104 556 0 525 1 0 1 1 0 8 0 amappl3 96 12021 0 11932 5 2 3 4 0 8 0 amappl2 88 2462 0 2387 2 0 2 2 0 8 0 amappl1 80 19604 0 19019 14 0 14 14 0 8 0 amappl 88 19113 0 18953 5 0 5 5 0 92 0 uvmvnodes 80 166 0 0 4 0 4 4 0 8 0 dma65536 65536 1 0 1 1 1 0 1 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 2 0 2 2 1 1 1 0 8 1 dma1024 1024 2 0 1 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 128 259 0 259 6 6 0 1 0 8 0 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 82 0 8 2 0 2 2 0 8 0 uaddrrnd 24 2413 0 2382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2413 0 2382 1 0 1 1 0 8 0 vmmpekpl 168 20631 0 20578 3 0 3 3 0 8 0 vmmpepl 168 157506 0 155629 129 31 98 108 0 357 6 vmsppl 488 2412 0 2382 6 1 5 5 0 8 0 rwobjpl 80 42926 0 41761 33 1 32 33 0 8 0 pdppl 4096 4856 0 4778 146 66 80 84 0 8 2 pvpl 32 21784 0 0 176 0 176 176 0 265 0 pmappl 256 2423 0 2385 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 431 0 101 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837bbff0) 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(ffffffff83957cc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83957cc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83957cc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83957cc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80003c45d910) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c45d910) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d4c94249500, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837bbff0) 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(ffffffff83957cc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83957cc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83957cc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83957cc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80003c45d910) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c45d910) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d4c94249500, count: -11 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff80000165c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c43da60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d75a7c8,1,fffffd80097fd410,ffff8000fffe8020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80773388d8,ffff8000fffe8020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80773388d8,ffff8000fffe8020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8020,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8020,ffff80003c43ddd0,ffff80003c43dd20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43ddd0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43ddd0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f601f378a20, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff80000165c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000fffe8020) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c43da60) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806d75a7c8,1,fffffd80097fd410,ffff8000fffe8020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80773388d8,ffff8000fffe8020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80773388d8,ffff8000fffe8020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80773388d8,ffff8000fffe8020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8020,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8020,ffff80003c43ddd0,ffff80003c43dd20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43ddd0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43ddd0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f601f378a20, count: -12