uvm_fault(0xfffffd80780bdd78, 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 361867 11233 0 0x14000 0x200 0 reaper dt_ioctl_record_stop(ffff800001477000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033c1b160) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807d491880,3,fffffd80097fb4e0,ffff80003a034558) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ef11648,ffff80003a034558) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ef11648,ffff80003a034558) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003a034558) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003a034558,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003a034558,ffff800033c1b4d0,ffff800033c1b420) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033c1b4d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c1b4d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7128c6582980, 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(0xfffffd80780bdd78, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001477000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033c1b160) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807d491880,3,fffffd80097fb4e0,ffff80003a034558) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ef11648,ffff80003a034558) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ef11648,ffff80003a034558) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003a034558) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003a034558,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003a034558,ffff800033c1b4d0,ffff800033c1b420) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033c1b4d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c1b4d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7128c6582980, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800033c1b090 rbx 0x1 rdx 0 rcx 0xffff80003a034558 rax 0xffffffff837d4f80 dt_prov_static r8 0 r9 0x1 r10 0 r11 0x5af8e18be180663d r12 0 r13 0 r14 0 r15 0xffff800000b41d00 rip 0xffffffff81c007b8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800033c1b060 ss 0 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=292796 pid=70964 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003a034558 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003a0347f0,0xffffffff83881b30 process=0xffff800032806b70 user=0xffff800033c16000, vmspace=0xfffffd80780bdd78 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19616 80499 20504 0 2 0 syz-executor 19616 209028 20504 0 3 0x4000080 fsleep syz-executor 57764 391097 98987 0 2 0 syz-executor 57764 169412 98987 0 3 0x4000080 fsleep syz-executor 57764 167740 98987 0 3 0x4000080 fsleep syz-executor 57764 417162 98987 0 2 0x4000000 syz-executor 1849 162968 73429 0 3 0x80 nanoslp syz-executor 1849 88127 73429 0 3 0x4000080 sbwait syz-executor 1849 321688 73429 0 3 0x4000080 fsleep syz-executor 20409 482507 58354 0 3 0x90 nanoslp syz-executor 20409 400070 58354 0 3 0x4000090 sbwait syz-executor 20409 248959 58354 0 3 0x4000090 fsleep syz-executor 75896 507041 87869 0 3 0x82 sbwait sshd-session 98987 314834 16968 0 3 0x82 nanoslp syz-executor 59920 478900 0 0 3 0x14280 nfsidl nfsio 94197 205302 0 0 3 0x14280 nfsidl nfsio 49367 140860 0 0 3 0x14280 nfsidl nfsio 73434 262860 0 0 3 0x14280 nfsidl nfsio 2614 107984 0 0 3 0x14280 nfsidl nfsio 68404 185933 0 0 3 0x14280 nfsidl nfsio 96328 435256 0 0 3 0x14280 nfsidl nfsio 79724 101160 0 0 3 0x14280 nfsidl nfsio 75335 488910 0 0 3 0x14280 nfsidl nfsio 32073 215357 0 0 3 0x14280 nfsidl nfsio 10230 59780 0 0 3 0x14280 nfsidl nfsio 22576 39939 0 0 3 0x14280 nfsidl nfsio 93731 204349 0 0 3 0x14280 nfsidl nfsio 75938 499045 0 0 3 0x14280 nfsidl nfsio 17078 310415 0 0 3 0x14280 nfsidl nfsio 77684 124468 0 0 3 0x14280 nfsidl nfsio 22035 422970 0 0 3 0x14280 nfsidl nfsio 59242 402854 0 0 3 0x14280 nfsidl nfsio 27548 90869 0 0 3 0x14280 nfsidl nfsio 91874 211483 0 0 3 0x14280 nfsidl nfsio 4135 481451 0 0 3 0x14200 bored sosplice 20504 97488 16968 0 3 0x82 nanoslp syz-executor 73429 299562 16968 0 3 0x82 nanoslp syz-executor 96718 209840 16968 0 3 0x82 wait syz-executor 1434 232741 16968 0 3 0x82 nanoslp syz-executor 58354 4886 16968 0 3 0x82 nanoslp syz-executor 49069 484791 16968 0 3 0x82 nanoslp syz-executor 39398 389740 16968 0 3 0x82 nanoslp syz-executor 16968 116939 43283 0 3 0x82 kqread syz-executor 43283 51411 26917 0 3 0x10008a sigsusp ksh 26917 172454 57768 0 3 0x98 kqread sshd-session 57768 435837 87869 0 3 0x92 kqread sshd-session 66569 362228 1 0 3 0x100083 ttyin getty 87869 27264 1 0 3 0x88 kqread sshd 64680 377149 69172 74 3 0x1100092 bpf pflogd 69172 37962 1 0 3 0x80 sbwait pflogd 11137 474959 10544 73 3 0x1100090 kqread syslogd 10544 348712 1 0 3 0x100082 sbwait syslogd 22535 62466 1 0 3 0x100080 kqread resolvd 23166 208899 0 0 3 0x14200 bored smr 86128 237545 0 0 2 0x14200 zerothread 48287 264944 0 0 3 0x14200 aiodoned aiodoned 15112 400794 0 0 3 0x14200 syncer update 76622 421765 0 0 3 0x14200 cleaner cleaner 11233 361867 0 0 7 0x14200 reaper 31001 491071 0 0 3 0x14200 pgdaemon pagedaemon 32703 500865 0 0 3 0x14200 bored viomb 99154 459055 0 0 3 0x40014200 acpi0 acpi0 60458 5416 0 0 3 0x40014200 idle1 13187 60774 0 0 3 0x14200 bored softnet7 70667 54373 0 0 3 0x14200 bored softnet6 83913 435705 0 0 3 0x14200 bored softnet5 46294 293465 0 0 3 0x14200 bored softnet4 81426 309188 0 0 3 0x14200 bored softnet3 92341 183319 0 0 3 0x14200 bored softnet2 12708 55882 0 0 3 0x14200 bored softnet1 6074 384909 0 0 3 0x14200 bored softnet0 49065 145450 0 0 3 0x14200 bored systqmp 27337 359108 0 0 3 0x14200 bored systq 33361 21145 0 0 3 0x14200 tmoslp softclockmp 19059 343310 0 0 3 0x40014200 tmoslp softclock 12288 336858 0 0 3 0x40014200 idle0 1 161712 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 11233 (reaper) thread 0xffff8000ffffc008 (361867) exclusive rwlock kmmaplk r = 0 (0xffffffff8397eb28) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10232 11078K 11764K 166960K 12103 0 pcb 17 13K 14K 166960K 223 0 rtable 178 9K 10K 166960K 474 0 pf 30 16K 25K 166960K 186 0 ifaddr 36 6K 8K 166960K 106 0 ifgroup 47 2K 2K 166960K 167 0 sysctl 4 1K 9K 166960K 16 0 counters 64 36K 37K 166960K 248 0 ioctlops 0 0K 4K 166960K 1794 0 iov 0 0K 24K 166960K 55 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 2277 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 109 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 1057 0 sigio 0 0K 0K 166960K 29 0 proc 69 99K 164K 166960K 627 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 225 0 in_multi 75 5K 7K 166960K 178 0 ether_multi 1 0K 0K 166960K 13 0 mrt 2 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 629 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 148K 183K 166960K 11681 0 UVM aobj 34 4K 4K 166960K 39 0 pinsyscall 39 78K 102K 166960K 2193 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 56 0 NDP 10 0K 2K 166960K 69 0 temp 69 8650K 8777K 166960K 39793 0 kqueue 8 14K 30K 166960K 213 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 120 136 0 135 2 0 2 2 0 8 1 rtentry 176 145 0 79 5 0 5 5 0 8 0 unpcb 144 923 0 902 7 5 2 4 0 8 1 syncache 336 12 0 12 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 300 0 291 5 3 2 4 0 8 1 arp 128 18 0 6 1 0 1 1 0 8 0 inpcb 328 1057 0 1046 9 7 2 7 0 8 0 nd6 144 22 0 11 1 0 1 1 0 8 0 pkpcb 40 11 0 11 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 77 0 77 2 1 1 1 0 8 1 pppxif 1504 8 0 8 2 1 1 1 0 8 1 pffrag 232 11 0 2 1 0 1 1 0 482 0 pffrnode 88 10 0 2 1 0 1 1 0 8 0 pffrent 40 14 0 5 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 2 0 2 1 1 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 93 0 29 1 0 1 1 0 8 0 pfstkey 128 93 0 29 3 0 3 3 0 8 0 pfstate 384 93 0 29 7 0 7 7 0 8 0 pfrule 1344 27 0 22 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 699 0 376 32 3 29 29 0 8 4 art_table 40 701 0 376 5 0 5 5 0 8 0 art_node 32 145 0 90 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 105 0 95 1 0 1 1 0 8 0 shmpl 112 36 0 5 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 3537 0 2031 96 0 96 96 0 8 0 ffsino 296 3537 0 2031 117 0 117 117 0 8 0 nchpl 144 5003 0 3306 64 0 64 64 0 8 0 rtmask 32 10 0 10 3 2 1 1 0 8 1 uvmvnodes 80 4019 0 0 83 0 83 83 0 8 0 vnodes 216 4019 0 0 224 0 224 224 0 8 0 namei 1024 18102 0 18102 2 1 1 2 0 8 1 percpumem 16 139 0 92 1 0 1 1 0 8 0 kstatmem 264 102 0 80 4 2 2 3 0 8 0 scsiplug 72 4 0 4 3 2 1 1 0 8 1 scxspl 216 27407 0 27407 11 9 2 8 1 8 2 plimitpl 152 455 0 438 1 0 1 1 0 8 0 sigapl 424 1385 0 1312 9 0 9 9 0 8 0 knotepl 120 573 0 0 18 0 18 18 0 8 0 kqueuepl 224 333 0 325 2 1 1 2 0 8 0 pipepl 344 283 0 256 9 4 5 9 0 8 2 fdescpl 528 1341 0 1311 3 0 3 3 0 8 0 filepl 160 9114 0 8887 19 7 12 16 0 8 2 lockfpl 104 417 0 414 1 0 1 1 0 8 0 lockfspl 48 150 0 148 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 60 0 43 1 0 1 1 0 8 0 ucredpl 104 1723 0 1711 1 0 1 1 0 8 0 zombiepl 144 1816 0 1812 1 0 1 1 0 8 0 processpl 1232 1385 0 1312 6 0 6 6 0 8 0 procpl 664 3131 0 3050 9 0 9 9 0 8 0 sosppl 168 15 0 15 3 2 1 1 0 8 1 sockpl 752 2159 0 2126 19 12 7 11 0 8 3 mcl64k 65536 19 0 0 3 0 3 3 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 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 107 0 0 14 0 14 14 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 298 0 0 18 0 18 18 0 8 0 bufpl 280 10617 0 4474 440 0 440 440 0 8 0 anonpl 32 8787 0 0 71 0 71 71 0 246 0 amapchunkpl 152 39913 0 39259 40 14 26 31 0 158 0 amappl16 200 4978 0 4949 31 17 14 19 0 8 8 amappl15 192 8 0 8 2 1 1 1 0 8 1 amappl14 184 132 0 122 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2025 0 1994 3 1 2 3 0 8 0 amappl11 160 50 0 42 1 0 1 1 0 8 0 amappl10 152 9 0 8 1 0 1 1 0 8 0 amappl9 144 251 0 251 2 1 1 1 0 8 1 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 119 0 109 1 0 1 1 0 8 0 amappl6 120 196 0 191 1 0 1 1 0 8 0 amappl5 112 127 0 120 1 0 1 1 0 8 0 amappl4 104 331 0 312 1 0 1 1 0 8 0 amappl3 96 7677 0 7561 4 0 4 4 0 8 0 amappl2 88 704 0 652 2 0 2 2 0 8 0 amappl1 80 13640 0 13036 17 2 15 16 0 8 0 amappl 88 10796 0 10617 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 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 38 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1341 0 1311 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1341 0 1311 1 0 1 1 0 8 0 vmmpekpl 168 13578 0 13535 3 0 3 3 0 8 0 vmmpepl 168 92087 0 90183 110 9 101 108 0 357 7 vmsppl 488 1340 0 1311 6 1 5 5 0 8 0 rwobjpl 80 31080 0 26111 102 0 102 102 0 8 0 pdppl 4096 2690 0 2622 104 34 70 84 0 8 2 pvpl 32 17378 0 0 142 1 141 141 0 265 0 pmappl 256 1340 0 1311 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 297 0 46 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e3ff0) 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(ffffffff838d9b80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x3a sys/dev/kcov.c:-1 witness_checkorder(ffffffff83828be0,9,0) at witness_checkorder+0x8a sys/kern/subr_witness.c:-1 mtx_enter(ffffffff83828bd0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff83828c08,ffffffff83828bd0,4,ffffffff83385a33,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff837e3ff0) 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(ffffffff838d9b80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x3a sys/dev/kcov.c:-1 witness_checkorder(ffffffff83828be0,9,0) at witness_checkorder+0x8a sys/kern/subr_witness.c:-1 mtx_enter(ffffffff83828bd0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff83828c08,ffffffff83828bd0,4,ffffffff83385a33,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001477000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033c1b160) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807d491880,3,fffffd80097fb4e0,ffff80003a034558) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ef11648,ffff80003a034558) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ef11648,ffff80003a034558) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003a034558) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003a034558,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003a034558,ffff800033c1b4d0,ffff800033c1b420) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033c1b4d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c1b4d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7128c6582980, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001477000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003a034558) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800033c1b160) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807d491880,3,fffffd80097fb4e0,ffff80003a034558) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ef11648,ffff80003a034558) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ef11648,ffff80003a034558) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ef11648,ffff80003a034558) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003a034558) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003a034558,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003a034558,ffff800033c1b4d0,ffff800033c1b420) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800033c1b4d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c1b4d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7128c6582980, count: -12