login: uvm_fault(0xfffffd806c24a3d8, 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 288580 64672 -1 0x10 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(ffff80000149a030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001486000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c42b2d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80601011e0,81,fffffd80097fb270,ffff80003c44a028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805ff534e8,ffff80003c44a028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805ff534e8,ffff80003c44a028) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44a028) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44a028,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44a028,ffff80003c42b640,ffff80003c42b590) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c42b640) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42b640) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff80003c42b6c0, 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(0xfffffd806c24a3d8, 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(ffff80000149a030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001486000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c42b2d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80601011e0,81,fffffd80097fb270,ffff80003c44a028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805ff534e8,ffff80003c44a028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805ff534e8,ffff80003c44a028) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44a028) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44a028,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44a028,ffff80003c42b640,ffff80003c42b590) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c42b640) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42b640) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x716d031896b0, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c42b130 rbx 0 rdx 0 rcx 0xffff80003c44a028 rax 0xffff8000299ddff0 r8 0 r9 0 r10 0x1c6f815cdf27183b r11 0x55b3203436935364 r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff829f5699 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c42b080 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=158225 pid=76947 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c44a028 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c44bc58,0xffff80003a001220 process=0xffff80003bc1c9d0 user=0xffff80003c426000, vmspace=0xfffffd806c24a3d8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64672 288580 80100 -1 7 0x10 syz-executor 64672 252720 80100 -1 3 0x4000090 fsleep syz-executor 25433 263671 72278 0 3 0x80 nanoslp syz-executor 25433 330585 72278 0 3 0x4000080 kqread syz-executor 25433 170190 72278 0 3 0x4000080 fsleep syz-executor 67846 385842 32865 0 3 0x80 nanoslp syz-executor 67846 221834 32865 0 3 0x4000080 sbwait syz-executor 67846 317901 32865 0 3 0x4000080 fsleep syz-executor 52192 8857 99943 0 3 0x80 nanoslp syz-executor 52192 459522 99943 0 3 0x4000080 kqsel syz-executor 52192 476524 99943 0 3 0x4000080 fsleep syz-executor 428 374524 81558 0 3 0x80 nanoslp syz-executor 428 209117 81558 0 3 0x4000080 ttyout syz-executor 428 496281 81558 0 3 0x4000080 fsleep syz-executor 2168 157537 46324 0 3 0x80 nanoslp syz-executor 2168 497987 46324 0 3 0x4000080 pipewr syz-executor 2168 465786 46324 0 3 0x4000080 fsleep syz-executor 2168 306628 46324 0 3 0x4000080 fsleep syz-executor 37486 205558 96840 0 3 0x80 nanoslp syz-executor 37486 138228 96840 0 3 0x4000080 kqread syz-executor 37486 26191 96840 0 3 0x4000080 fsleep syz-executor 46308 299529 88153 0 3 0x82 nanoslp syz-executor 81558 160690 88153 0 3 0x82 nanoslp syz-executor 96840 146811 88153 0 3 0x82 nanoslp syz-executor 80100 518803 88153 0 3 0x82 nanoslp syz-executor 99943 170213 88153 0 3 0x82 nanoslp syz-executor 32865 382264 88153 0 3 0x82 nanoslp syz-executor 46324 83924 88153 0 3 0x82 nanoslp syz-executor 72278 91117 88153 0 3 0x82 nanoslp syz-executor 88153 141489 58692 0 3 0x82 kqread syz-executor 58692 332953 63996 0 3 0x10008a sigsusp ksh 63996 246499 38879 0 3 0x98 kqread sshd-session 38879 272617 44829 0 3 0x92 kqread sshd-session 3946 10159 1 0 3 0x100083 ttyin getty 44829 516087 1 0 3 0x88 kqread sshd 96431 291350 18787 74 3 0x1100092 bpf pflogd 18787 280469 1 0 3 0x80 sbwait pflogd 4395 366339 17837 73 3 0x1100090 kqread syslogd 17837 261070 1 0 3 0x100082 sbwait syslogd 9508 331543 1 0 3 0x100080 kqread resolvd 33375 243482 90087 77 3 0x100092 kqread dhcpleased 90341 282376 90087 77 3 0x100092 kqread dhcpleased 90087 325615 1 0 3 0x80 kqread dhcpleased 70100 308132 0 0 3 0x14200 bored smr 52885 510995 0 0 2 0x14200 zerothread 18872 364644 0 0 3 0x14200 aiodoned aiodoned 20838 420697 0 0 3 0x14200 syncer update 13836 283451 0 0 3 0x14200 cleaner cleaner 83339 492248 0 0 3 0x14200 reaper reaper 97580 169423 0 0 3 0x14200 pgdaemon pagedaemon 2154 281325 0 0 3 0x14200 bored viomb 21824 51153 0 0 3 0x40014200 acpi0 acpi0 65252 308882 0 0 3 0x40014200 idle1 88832 319923 0 0 3 0x14200 bored softnet3 28696 336390 0 0 3 0x14200 bored softnet2 87829 348317 0 0 3 0x14200 bored softnet1 46435 152442 0 0 3 0x14200 bored softnet0 10134 507096 0 0 3 0x14200 smrbar systqmp 99689 312822 0 0 3 0x14200 bored systq 70850 92932 0 0 3 0x14200 tmoslp softclockmp 9580 466091 0 0 3 0x40014200 tmoslp softclock 20289 247966 0 0 3 0x40014200 idle0 1 451892 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 64672 (syz-executor) thread 0xffff80003a001210 (288580) exclusive rwlock amaplk r = 0 (0xfffffd806fec4be8) #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 uvm_fault_check+0x5a9 sys/uvm/uvm_fault.c:862 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c24ae38) #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_read+0x36e sys/kern/kern_rwlock.c:397 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 10134 (systqmp) thread 0xffff8000ffffe520 (507096) shared rwlock systqmp r = 0 (0xffffffff838b7788) #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 10211 11128K 11373K 166960K 11407 0 pcb 19 14K 16K 166960K 106 0 rtable 225 6K 7K 166960K 368 0 pf 34 17K 18K 166960K 45 0 ifaddr 44 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 4K 166960K 1492 0 iov 0 0K 12K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1348 85K 85K 166960K 1399 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 188 0 sigio 0 0K 0K 166960K 1 0 proc 72 91K 140K 166960K 535 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 6 0 in_multi 99 7K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 377 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 257 168K 177K 166960K 3419 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 102K 166960K 1296 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 39 0 NDP 28 2K 2K 166960K 28 0 temp 37 8670K 8738K 166960K 8183 0 kqueue 15 24K 26K 166960K 34 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 44 0 40 1 0 1 1 0 8 0 rtentry 176 116 0 12 6 0 6 6 0 8 0 unpcb 144 68 0 44 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 15 0 10 1 0 1 1 0 8 0 arp 128 20 0 0 1 0 1 1 0 8 0 inpcb 328 176 0 163 7 0 7 7 0 8 5 nd6 144 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 1 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 23 0 0 1 0 1 1 0 8 0 pfstkey 128 23 0 0 1 0 1 1 0 8 0 pfstate 384 23 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 487 0 41 31 0 31 31 0 8 1 art_table 40 488 0 41 5 0 5 5 0 8 0 art_node 32 116 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1637 0 122 95 0 95 95 0 8 0 ffsino 288 1637 0 122 109 0 109 109 0 8 0 nchpl 144 1896 0 204 63 0 63 63 0 8 0 uvmvnodes 80 1757 0 0 36 0 36 36 0 8 0 vnodes 216 1757 0 0 98 0 98 98 0 8 0 namei 1024 6020 0 6020 2 0 2 2 0 8 2 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 26 0 0 2 0 2 2 0 8 0 scxspl 216 6233 0 6233 3 1 2 2 1 8 2 plimitpl 152 33 0 14 1 0 1 1 0 8 0 sigapl 424 495 0 445 7 0 7 7 0 8 1 knotepl 120 373 0 0 12 0 12 12 0 8 0 kqueuepl 224 39 0 24 1 0 1 1 0 8 0 pipepl 336 109 0 81 3 0 3 3 0 8 0 fdescpl 520 477 0 445 3 0 3 3 0 8 0 filepl 160 1915 0 1673 18 0 18 18 0 8 7 lockfpl 104 172 0 168 2 0 2 2 0 8 1 lockfspl 48 24 0 20 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 114 0 100 1 0 1 1 0 8 0 zombiepl 144 446 0 445 1 0 1 1 0 8 0 processpl 1240 495 0 445 5 0 5 5 0 8 0 procpl 656 588 0 524 6 0 6 6 0 8 0 sockpl 728 292 0 251 9 0 9 9 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 106 0 0 14 0 14 14 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 135 0 0 9 0 9 9 0 8 0 bufpl 280 2519 0 123 172 0 172 172 0 8 0 anonpl 32 4008 0 0 33 0 33 33 0 246 0 amapchunkpl 152 9736 0 9183 22 0 22 22 0 158 0 amappl16 200 2044 0 2020 5 0 5 5 0 8 2 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 113 0 101 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1134 0 1102 2 0 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 21 0 20 1 0 1 1 0 8 0 amappl9 144 256 0 255 1 0 1 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 179 0 176 1 0 1 1 0 8 0 amappl5 112 124 0 115 1 0 1 1 0 8 0 amappl4 104 320 0 301 1 0 1 1 0 8 0 amappl3 96 1604 0 1479 4 0 4 4 0 8 0 amappl2 88 676 0 617 2 0 2 2 0 8 0 amappl1 80 8355 0 7753 15 1 14 15 0 8 1 amappl 88 2723 0 2538 5 0 5 5 0 92 0 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 6 0 6 1 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 477 0 445 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 477 0 445 1 0 1 1 0 8 0 vmmpekpl 168 5580 0 5543 2 0 2 2 0 8 0 vmmpepl 168 37033 0 35007 89 0 89 89 0 357 0 vmsppl 480 476 0 445 5 0 5 5 0 8 1 rwobjpl 72 14850 0 12146 50 0 50 50 0 8 0 pdppl 4096 961 0 890 101 18 83 83 0 8 12 pvpl 32 11153 0 0 90 0 90 90 0 265 0 pmappl 256 476 0 445 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 383 0 20 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8388bff0) 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(ffffffff839f6e28) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:135 [inline] __mp_lock(ffffffff839f6e28) at __mp_lock+0x190 sys/kern/kern_lock.c:165 uvm_fault(fffffd806c24ad38,56206fd9000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700 upageflttrap(ffff80003c443390,56206fd9000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c443390) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x78908c097ff0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff8388bff0) 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(ffffffff839f6e28) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:135 [inline] __mp_lock(ffffffff839f6e28) at __mp_lock+0x190 sys/kern/kern_lock.c:165 uvm_fault(fffffd806c24ad38,56206fd9000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700 upageflttrap(ffff80003c443390,56206fd9000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c443390) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x78908c097ff0, count: -8 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(ffff80000149a030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001486000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c42b2d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80601011e0,81,fffffd80097fb270,ffff80003c44a028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805ff534e8,ffff80003c44a028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805ff534e8,ffff80003c44a028) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44a028) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44a028,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44a028,ffff80003c42b640,ffff80003c42b590) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c42b640) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42b640) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff80003c42b6c0, 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(ffff80000149a030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001486000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44a028) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c42b2d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80601011e0,81,fffffd80097fb270,ffff80003c44a028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805ff534e8,ffff80003c44a028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805ff534e8,ffff80003c44a028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805ff534e8,ffff80003c44a028) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44a028) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44a028,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44a028,ffff80003c42b640,ffff80003c42b590) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c42b640) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42b640) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x716d031896b0, count: -15