uvm_fault(0xfffffd806ae60d40, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 238218 3229 0 0 0 0 syz-executor witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001491330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000166e000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035fe88d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f45ae70,1,fffffd80097fb4e0,ffff80003c46e2c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e14d910,ffff80003c46e2c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e14d910,ffff80003c46e2c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46e2c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46e2c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46e2c0,ffff800035fe8c40,ffff800035fe8b90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035fe8c40) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035fe8c40) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 end trace frame: 0xffff800035fe8cc0, 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(0xfffffd806ae60d40, 0x48, 0, 1) -> e ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001491330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000166e000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035fe88d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f45ae70,1,fffffd80097fb4e0,ffff80003c46e2c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e14d910,ffff80003c46e2c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e14d910,ffff80003c46e2c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46e2c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46e2c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46e2c0,ffff800035fe8c40,ffff800035fe8b90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035fe8c40) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035fe8c40) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0f7eaad3e0, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800035fe8730 rbx 0 rdx 0 rcx 0xffff80003c46e2c0 rax 0xffff8000299ddff0 r8 0xffffffffffffffff r9 0x1 r10 0xb8bf669646103cde r11 0x17423bbafd4ba9af r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff82775e89 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035fe8680 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=178090 pid=18595 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c46e2c0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c46fc60,0xffff80003c46f230 process=0xffff8000ffff44e0 user=0xffff800035fe3000, vmspace=0xfffffd806ae60d40 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3229 238218 4233 0 7 0 syz-executor 3229 171733 4233 0 2 0x4000080 syz-executor 89129 244253 80607 0 2 0 syz-executor 89129 157613 80607 0 3 0x4000080 fsleep syz-executor 89129 358377 80607 0 3 0x4000080 fsleep syz-executor 72909 363821 54330 0 2 0 syz-executor 72909 426265 54330 0 2 0x4000000 syz-executor 37356 234727 81488 60929 3 0x90 nanoslp syz-executor 37356 117026 81488 60929 3 0x4000090 piperd syz-executor 37356 448275 81488 60929 3 0x4000090 fsleep syz-executor 98729 103373 36279 0 3 0x80 nanoslp syz-executor 98729 296245 36279 0 3 0x4000080 sbwait syz-executor 98729 499495 36279 0 3 0x4000080 fsleep syz-executor 33310 315020 0 0 3 0x14200 acct acct 4233 92083 4487 0 3 0x82 nanoslp syz-executor 54330 126189 4487 0 3 0x82 nanoslp syz-executor 96248 425443 1 0 3 0x80 nanoslp init 17991 280418 4487 0 3 0x82 nanoslp syz-executor 46893 86547 4487 0 3 0x82 nanoslp syz-executor 81488 304687 4487 0 3 0x82 nanoslp syz-executor 80607 172213 4487 0 3 0x82 nanoslp syz-executor 87098 134175 0 0 3 0x14200 bored sosplice 77325 463954 83006 0 3 0x100082 sbwait arp 83006 292603 1 0 3 0x10008a sigsusp sh 36837 444368 4487 0 2 0x2 syz-executor 36279 265945 4487 0 3 0x82 nanoslp syz-executor 4487 301725 72674 0 3 0x82 kqread syz-executor 72674 342022 98941 0 3 0x10008a sigsusp ksh 98941 309422 27491 0 3 0x98 kqread sshd-session 27491 238261 99599 0 3 0x92 kqread sshd-session 99599 436529 1 0 3 0x88 kqread sshd 51933 225555 39338 74 3 0x1100092 bpf pflogd 39338 76465 1 0 3 0x80 sbwait pflogd 29353 45226 37795 73 3 0x1100090 kqread syslogd 37795 344495 1 0 3 0x100082 sbwait syslogd 40083 28420 1 0 3 0x100080 kqread resolvd 15411 443645 83469 77 2 0x100012 dhcpleased 9564 497611 83469 77 3 0x100092 kqread dhcpleased 83469 394919 1 0 3 0x80 kqread dhcpleased 76248 69252 0 0 3 0x14200 bored smr 40801 185888 0 0 2 0x14200 zerothread 9213 389571 0 0 3 0x14200 aiodoned aiodoned 70227 374512 0 0 3 0x14200 syncer update 64683 265154 0 0 3 0x14200 cleaner cleaner 79575 330156 0 0 3 0x14200 reaper reaper 78821 294457 0 0 3 0x14200 pgdaemon pagedaemon 29704 380592 0 0 3 0x14200 bored viomb 61871 62316 0 0 3 0x40014200 acpi0 acpi0 61124 469659 0 0 3 0x40014200 idle1 32265 246211 0 0 3 0x14200 bored softnet3 63564 340343 0 0 3 0x14200 bored softnet2 89307 387530 0 0 3 0x14200 bored softnet1 92158 236761 0 0 2 0x14200 softnet0 612 367368 0 0 3 0x14200 bored systqmp 52169 385449 0 0 3 0x14200 bored systq 80645 280776 0 0 3 0x14200 tmoslp softclockmp 85901 122797 0 0 3 0x40014200 tmoslp softclock 52417 371264 0 0 3 0x40014200 idle0 1 129013 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 89129 (syz-executor) thread 0xffff80003c46f740 (358377) exclusive rwlock vmmaplk r = 0 (0xfffffd806ae60c60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_mapanon+0x292 sys/uvm/uvm_map.c:-1 #4 uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1029 #5 sys_mmap+0xa96 sys/uvm/uvm_mmap.c:426 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 #7 Xsyscall+0x128 Process 92158 (softnet0) thread 0xffff8000ffffe290 (236761) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10265 11194K 11811K 166960K 15673 0 pcb 20 15K 16K 166960K 778 0 rtable 243 13K 13K 166960K 1032 0 pf 38 18K 22K 166960K 254 0 ifaddr 45 8K 8K 166960K 196 0 ifgroup 59 2K 2K 166960K 315 0 sysctl 4 1K 9K 166960K 34 0 counters 72 37K 37K 166960K 336 0 ioctlops 0 0K 4K 166960K 2005 0 iov 0 0K 28K 166960K 195 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1467 92K 92K 166960K 4005 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 50 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 99 0 dirhash 12 2K 2K 166960K 90 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 89K 166960K 2863 0 sigio 0 0K 0K 166960K 121 0 proc 63 79K 140K 166960K 1117 0 subproc 81 5K 5K 166960K 162 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 536 0 in_multi 91 6K 7K 166960K 336 0 ether_multi 1 0K 0K 166960K 37 0 mrt 1 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 997 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 269 167K 186K 166960K 27094 0 UVM aobj 85 3K 3K 166960K 92 0 pinsyscall 45 90K 108K 166960K 4241 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 190 0 NDP 14 0K 1K 166960K 133 0 temp 80 8688K 8816K 166960K 127451 0 kqueue 13 20K 30K 166960K 541 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 120 330 0 326 4 3 1 3 0 8 0 rtentry 176 302 0 212 6 0 6 6 0 8 0 unpcb 144 2144 0 2121 20 18 2 6 0 8 1 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpcb 736 792 0 788 12 11 1 7 0 8 0 arp 128 52 0 35 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 328 3476 0 3463 21 17 4 9 0 8 2 nd6 144 58 0 39 1 0 1 1 0 8 0 pkpcb 40 89 0 89 5 4 1 1 0 8 1 kcovpl 48 18 0 9 1 0 1 1 0 8 0 mppekey 1024 4 0 3 2 1 1 1 0 8 0 ppxss 1192 98 0 96 4 3 1 1 0 8 0 pppxif 1504 13 0 13 2 2 0 1 0 8 0 pffrag 232 50 0 41 1 0 1 1 0 482 0 pffrnode 88 14 0 5 1 0 1 1 0 8 0 pffrent 40 94 0 84 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 133 0 47 1 0 1 1 0 8 0 pfstkey 128 133 0 47 3 0 3 3 0 8 0 pfstate 384 133 0 47 9 0 9 9 0 8 0 pfrule 1344 24 0 16 2 0 2 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1256 0 847 37 11 26 27 0 8 0 art_table 32 1260 0 847 4 0 4 4 0 8 0 art_node 16 291 0 216 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 95 0 85 1 0 1 1 0 8 0 shmpl 112 89 0 7 3 0 3 3 0 8 0 dirhash 1024 70 0 53 3 0 3 3 0 8 0 dino2pl 256 6669 0 5139 96 0 96 96 0 8 0 ffsino 288 6669 0 5139 110 0 110 110 0 8 0 nchpl 144 10560 0 9988 65 37 28 65 0 8 1 rtmask 32 23 0 22 7 6 1 1 0 8 0 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 39509 0 39509 3 2 1 2 0 8 1 percpumem 16 183 0 132 1 0 1 1 0 8 0 kstatmem 264 198 0 168 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 4 4 0 1 0 8 0 scxspl 216 65636 0 65636 16 15 1 8 1 8 1 plimitpl 152 685 0 667 1 0 1 1 0 8 0 sigapl 424 3183 0 3129 9 2 7 9 0 8 0 knotepl 120 834 0 0 25 0 25 25 0 8 0 kqueuepl 224 1166 0 1157 14 9 5 5 0 8 4 pipepl 336 548 0 517 15 12 3 9 0 8 0 fdescpl 520 3137 0 3103 3 0 3 3 0 8 0 filepl 160 22783 0 22539 42 29 13 21 0 8 2 lockfpl 104 1467 0 1465 3 2 1 2 0 8 0 lockfspl 48 517 0 515 1 0 1 1 0 8 0 sessionpl 144 36 0 28 1 0 1 1 0 8 0 pgrppl 48 108 0 91 1 0 1 1 0 8 0 ucredpl 104 3932 0 3918 1 0 1 1 0 8 0 zombiepl 144 3132 0 3129 2 1 1 1 0 8 0 processpl 1240 3183 0 3129 6 0 6 6 0 8 0 procpl 656 7848 0 7786 11 4 7 8 0 8 0 srpgc 96 33 0 33 3 3 0 1 0 8 0 sosppl 168 21 0 21 3 3 0 1 0 8 0 sockpl 728 6106 0 6064 56 48 8 26 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 77 0 0 8 0 8 8 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 1119 0 0 70 0 70 70 0 8 0 bufpl 280 26327 0 20185 440 0 440 440 0 8 0 anonpl 32 12858 0 0 104 0 104 104 0 246 0 amapchunkpl 152 95331 0 94746 50 22 28 34 0 158 3 amappl16 200 11847 0 11814 75 59 16 31 0 8 6 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 143 0 131 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 3949 0 3915 3 1 2 2 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 279 0 278 1 0 1 1 0 8 0 amappl8 136 25 0 21 1 0 1 1 0 8 0 amappl7 128 148 0 135 1 0 1 1 0 8 0 amappl6 120 275 0 270 1 0 1 1 0 8 0 amappl5 112 164 0 153 1 0 1 1 0 8 0 amappl4 104 369 0 347 1 0 1 1 0 8 0 amappl3 96 19525 0 19393 4 0 4 4 0 8 0 amappl2 88 831 0 764 2 0 2 2 0 8 0 amappl1 80 20757 0 20138 17 2 15 16 0 8 0 amappl 88 25695 0 25502 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 dma512 512 2 0 2 2 2 0 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 257 0 257 4 4 0 1 0 8 0 dma64 64 9 0 9 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 91 0 7 2 0 2 2 0 8 0 uaddrrnd 24 3137 0 3103 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3137 0 3103 1 0 1 1 0 8 0 vmmpekpl 168 24236 0 24175 4 0 4 4 0 8 0 vmmpepl 168 200384 0 198216 141 34 107 119 0 357 2 vmsppl 480 3136 0 3103 5 0 5 5 0 8 0 rwobjpl 72 58506 0 51496 140 5 135 138 0 8 0 pdppl 4096 6281 0 6206 129 52 77 83 0 8 2 pvpl 32 20583 0 0 169 3 166 167 0 265 0 pmappl 256 3136 0 3103 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 521 0 98 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8380eff0) 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: 0x7679f5df4b00, count: 12 ddb{0}> trace x86_ipi_db(ffffffff8380eff0) 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: 0x7679f5df4b00, count: -3 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001491330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000166e000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035fe88d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f45ae70,1,fffffd80097fb4e0,ffff80003c46e2c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e14d910,ffff80003c46e2c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e14d910,ffff80003c46e2c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46e2c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46e2c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46e2c0,ffff800035fe8c40,ffff800035fe8b90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035fe8c40) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035fe8c40) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 end trace frame: 0xffff800035fe8cc0, count: 0 ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001491330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000166e000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c46e2c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035fe88d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f45ae70,1,fffffd80097fb4e0,ffff80003c46e2c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e14d910,ffff80003c46e2c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e14d910,ffff80003c46e2c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e14d910,ffff80003c46e2c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46e2c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46e2c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46e2c0,ffff800035fe8c40,ffff800035fe8b90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035fe8c40) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035fe8c40) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0f7eaad3e0, count: -15