uvm_fault(0xfffffd8071f8a3e8, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 4094 31523 0 0 0 0 syz-executor witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001538f30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a338430) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80698b9210,1,fffffd80097fd138,ffff800039c0cfb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806cb11358,ffff800039c0cfb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806cb11358,ffff800039c0cfb0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039c0cfb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039c0cfb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039c0cfb0,ffff80002a3387a0,ffff80002a3386f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3387a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3387a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 end trace frame: 0xffff80002a338820, count: 0 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(0xfffffd8071f8a3e8, 0x48, 0, 1) -> e ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001538f30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a338430) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80698b9210,1,fffffd80097fd138,ffff800039c0cfb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806cb11358,ffff800039c0cfb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806cb11358,ffff800039c0cfb0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039c0cfb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039c0cfb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039c0cfb0,ffff80002a3387a0,ffff80002a3386f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3387a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3387a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ca12ecef390, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a338290 rbx 0 rdx 0 rcx 0xffff800039c0cfb0 rax 0xffff8000299edffe r8 0 r9 0x1 r10 0xcfc0c9de16e5d207 r11 0x10b7f7eb6937c529 r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff815368d5 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a3381f0 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=206947 pid=18708 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800039c0cfb0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000373f3788,0xffff8000373f2570 process=0xffff80003c4e5d08 user=0xffff80002a333000, vmspace=0xfffffd8071f8a3e8 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31523 4094 90161 0 7 0 syz-executor 31523 261117 90161 0 2 0x4000000 syz-executor 17163 111192 20079 0 2 0 syz-executor 17163 453099 20079 0 3 0x4000080 ttyin syz-executor 11330 7338 39574 0 2 0x2 arp 39574 208632 46392 0 3 0x10008a sigsusp sh 76007 207444 6912 0 2 0x1 syz-executor 76007 428106 6912 0 3 0x4000080 fsleep syz-executor 46392 18178 72889 0 3 0x82 wait syz-executor 90161 414221 72889 0 3 0x82 nanoslp syz-executor 88216 472216 0 0 3 0x14200 acct acct 27918 446 72889 0 2 0x2 syz-executor 42065 137183 72889 0 2 0x3 syz-executor 20079 54330 72889 0 2 0x3 syz-executor 74513 183696 72889 0 3 0x82 nanoslp syz-executor 89038 172373 72889 0 3 0x82 wait syz-executor 6912 238133 72889 0 2 0x3 syz-executor 72889 180185 83158 0 3 0x82 kqread syz-executor 83158 129114 29656 0 3 0x10008a sigsusp ksh 29656 53713 92019 0 3 0x98 kqread sshd-session 92019 190919 48855 0 3 0x92 kqread sshd-session 24552 490530 1 0 3 0x100083 ttyin getty 48855 237777 1 0 3 0x88 kqread sshd 59757 171060 54835 74 3 0x1100092 bpf pflogd 54835 43328 1 0 3 0x80 sbwait pflogd 24520 380521 65685 73 3 0x1100090 kqread syslogd 65685 71157 1 0 3 0x100082 sbwait syslogd 53939 204920 1 0 3 0x100080 kqread resolvd 86076 33216 64512 77 3 0x100092 kqread dhcpleased 89804 437099 64512 77 3 0x100092 kqread dhcpleased 64512 248070 1 0 3 0x80 kqread dhcpleased 99434 370078 0 0 3 0x14200 bored smr 92291 447949 0 0 3 0x14200 pgzero zerothread 42841 152905 0 0 3 0x14200 aiodoned aiodoned 54388 160913 0 0 3 0x14200 syncer update 75948 398280 0 0 3 0x14200 cleaner cleaner 89132 14676 0 0 2 0x14200 reaper 99700 157156 0 0 3 0x14200 pgdaemon pagedaemon 18526 167274 0 0 3 0x14200 bored viomb 24602 428572 0 0 3 0x40014200 acpi0 acpi0 478 271681 0 0 3 0x40014200 idle1 18544 148187 0 0 3 0x14200 bored softnet1 54095 253031 0 0 3 0x14200 bored softnet0 82249 32682 0 0 3 0x14200 bored systqmp 51520 272299 0 0 3 0x14200 bored systq 8512 324947 0 0 3 0x14200 tmoslp softclockmp 12771 355166 0 0 3 0x40014200 tmoslp softclock 13658 291401 0 0 3 0x40014200 idle0 1 107567 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 31523 (syz-executor) thread 0xffff800039c0da10 (261117) exclusive rwlock vmmaplk r = 0 (0xfffffd8071f8ae70) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 27918 (syz-executor) thread 0xffff8000ffff2fa8 (446) exclusive rwlock vmmaplk r = 0 (0xfffffd8071f8a8b8) #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:5171 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3741 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd800b0636b8) #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:5171 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3732 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 Process 89132 (reaper) thread 0xffff8000ffffdc90 (14676) exclusive rwlock kmmaplk r = 0 (0xffffffff83915440) #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:5171 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:714 #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 10231 11206K 11475K 166960K 12062 0 pcb 17 12K 12K 166960K 90 0 rtable 213 10K 11K 166960K 507 0 pf 39 18K 22K 166960K 111 0 ifaddr 40 7K 8K 166960K 88 0 ifgroup 59 2K 2K 166960K 134 0 sysctl 3 1K 9K 166960K 11 0 counters 70 37K 37K 166960K 142 0 ioctlops 0 0K 8K 166960K 1572 0 iov 0 0K 14K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1412 89K 89K 166960K 1872 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 4 9K 13K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 13 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 85K 166960K 600 0 sigio 0 0K 0K 166960K 16 0 proc 72 115K 180K 166960K 644 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 52 0 in_multi 78 5K 7K 166960K 149 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 478 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 246 157K 172K 166960K 7313 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 45 90K 99K 166960K 1811 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 30 0 NDP 13 0K 1K 166960K 56 0 temp 50 8669K 8743K 166960K 27940 0 kqueue 13 20K 28K 166960K 118 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 68 0 65 1 0 1 1 0 8 0 rtentry 176 152 0 66 6 0 6 6 0 8 0 unpcb 144 442 0 425 9 5 4 6 0 8 3 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpcb 736 130 0 126 1 0 1 1 0 8 0 arp 136 25 0 8 1 0 1 1 0 8 0 inpcb 328 493 0 486 8 1 7 7 0 8 6 nd6 152 32 0 12 2 0 2 2 0 8 1 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 25 0 25 2 1 1 1 0 8 1 pppxif 1504 5 0 5 2 1 1 1 0 8 1 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 4 1 0 1 1 0 8 0 pfosfp 40 1430 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1430 0 715 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 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 57 0 10 1 0 1 1 0 8 0 pfstkey 128 57 0 10 2 0 2 2 0 8 0 pfstate 448 57 0 10 6 0 6 6 0 8 0 pfrule 1344 25 0 17 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 667 0 296 31 3 28 31 0 8 2 art_table 40 669 0 296 6 0 6 6 0 8 0 art_node 32 152 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2451 0 934 95 0 95 95 0 8 0 ffsino 296 2451 0 934 117 0 117 117 0 8 0 nchpl 144 3230 0 1521 64 0 64 64 0 8 0 rtmask 32 6 0 6 2 1 1 1 0 8 1 vnodes 216 2818 0 0 157 0 157 157 0 8 0 namei 1024 10810 0 10810 2 1 1 1 0 8 1 percpumem 16 86 0 36 1 0 1 1 0 8 0 kstatmem 264 76 0 46 3 0 3 3 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 11544 0 11544 10 2 8 8 1 8 8 plimitpl 152 122 0 104 1 0 1 1 0 8 0 sigapl 424 927 0 877 8 0 8 8 0 8 1 knotepl 120 326 0 0 10 0 10 10 0 8 0 kqueuepl 224 198 0 189 2 1 1 2 0 8 0 pipepl 344 168 0 141 3 0 3 3 0 8 0 fdescpl 528 890 0 857 3 0 3 3 0 8 0 filepl 160 4720 0 4469 19 6 13 16 0 8 1 lockfpl 104 149 0 147 1 0 1 1 0 8 0 lockfspl 48 70 0 68 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 104 741 0 727 1 0 1 1 0 8 0 zombiepl 144 1080 0 1077 1 0 1 1 0 8 0 processpl 1232 927 0 877 6 0 6 6 0 8 0 procpl 664 1709 0 1655 8 0 8 8 0 8 2 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 1023 0 995 23 13 10 17 0 8 7 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k 2048 35 0 0 4 0 4 4 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 217 0 0 14 0 14 14 0 8 0 bufpl 280 3914 0 129 271 0 271 271 0 8 0 anonpl 32 8091 0 0 66 0 66 66 0 246 0 amapchunkpl 152 22850 0 22371 36 3 33 33 0 158 12 amappl16 200 1506 0 1479 29 17 12 17 0 8 8 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 2 0 2 1 1 0 1 0 8 0 amappl13 176 457 0 455 1 0 1 1 0 8 0 amappl12 168 1269 0 1225 3 0 3 3 0 8 0 amappl11 160 4 0 3 1 0 1 1 0 8 0 amappl10 152 45 0 31 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 31 0 29 1 0 1 1 0 8 0 amappl7 128 87 0 86 1 0 1 1 0 8 0 amappl6 120 306 0 290 1 0 1 1 0 8 0 amappl5 112 99 0 88 1 0 1 1 0 8 0 amappl4 104 462 0 430 1 0 1 1 0 8 0 amappl3 96 3900 0 3805 4 1 3 3 0 8 0 amappl2 88 1023 0 944 2 0 2 2 0 8 0 amappl1 80 12144 0 11533 15 1 14 14 0 8 0 amappl 88 6452 0 6288 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 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 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 256 0 256 3 2 1 1 0 8 1 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 890 0 857 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 890 0 857 1 0 1 1 0 8 0 vmmpekpl 168 9208 0 9166 3 0 3 3 0 8 0 vmmpepl 168 63017 0 61042 107 10 97 97 0 357 9 vmsppl 488 889 0 857 5 0 5 5 0 8 0 rwobjpl 80 18871 0 17799 29 2 27 27 0 8 1 pdppl 4096 1787 0 1714 101 28 73 81 0 8 0 pvpl 32 15308 0 0 125 1 124 124 0 265 0 pmappl 256 889 0 857 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 289 0 36 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8380aff0) 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 end of kernel end trace frame: 0x7a55c64b4670, count: 12 ddb{0}> trace x86_ipi_db(ffffffff8380aff0) 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 end of kernel end trace frame: 0x7a55c64b4670, count: -3 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001538f30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a338430) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80698b9210,1,fffffd80097fd138,ffff800039c0cfb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806cb11358,ffff800039c0cfb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806cb11358,ffff800039c0cfb0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039c0cfb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039c0cfb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039c0cfb0,ffff80002a3387a0,ffff80002a3386f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3387a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3387a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 end trace frame: 0xffff80002a338820, count: 0 ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001538f30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff800039c0cfb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a338430) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80698b9210,1,fffffd80097fd138,ffff800039c0cfb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806cb11358,ffff800039c0cfb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806cb11358,ffff800039c0cfb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806cb11358,ffff800039c0cfb0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039c0cfb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039c0cfb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039c0cfb0,ffff80002a3387a0,ffff80002a3386f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3387a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3387a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ca12ecef390, count: -15