uvm_fault(0xfffffd806c2165b8, 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 189765 14125 0 0x10000002 0x1 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(ffff8000014b2430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000147c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000337dde90) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80620f21c0,81,fffffd80097fb548,ffff8000ffff1738) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068139570,ffff8000ffff1738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8068139570,ffff8000ffff1738) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000ffff1738) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000ffff1738,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff1738,ffff8000337de200,ffff8000337de150) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000337de200) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337de200) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 end trace frame: 0xffff8000337de280, 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(0xfffffd806c2165b8, 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(ffff8000014b2430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000147c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000337dde90) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80620f21c0,81,fffffd80097fb548,ffff8000ffff1738) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068139570,ffff8000ffff1738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8068139570,ffff8000ffff1738) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000ffff1738) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000ffff1738,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff1738,ffff8000337de200,ffff8000337de150) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000337de200) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337de200) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72f5db0eb850, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000337ddcf0 rbx 0 rdx 0 rcx 0xffff8000ffff1738 rax 0xffff8000299ddff0 r8 0xffffffffffffffff r9 0x1 r10 0xafce2a7d7e7acb3e r11 0xddfebd0d5fa95ff5 r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff81abd439 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000337ddc40 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=171045 pid=81639 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff1738 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe9c60,0xffff8000fffe9750 process=0xffff8000fffe66e0 user=0xffff8000337d9000, vmspace=0xfffffd806c2165b8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46462 30965 21725 0 2 0 syz-executor 57134 168817 73178 0 3 0x3000 suspend syz-executor 57134 270437 73178 0 2 0x4081080 syz-executor 14762 100912 97886 0 2 0 syz-executor 14762 211488 97886 0 3 0x4000080 ttyout syz-executor 14762 234142 97886 0 3 0x4000080 fsleep syz-executor 96358 475852 0 0 3 0x14200 bored sosplice 35426 177541 77234 0 3 0x100082 sbwait arp 77234 27811 93049 0 3 0x10008a sigsusp sh 73178 98285 35415 0 3 0x82 nanoslp syz-executor 21725 237144 35415 0 3 0x82 nanoslp syz-executor 93049 203399 35415 0 3 0x82 wait syz-executor 29687 474976 35415 0 3 0x82 nanoslp syz-executor 24641 50571 35415 0 3 0x82 nanoslp syz-executor 14125 189765 35415 0 7 0x10000003 syz-executor 73273 510494 35415 0 3 0x82 nanoslp syz-executor 97886 35803 35415 0 3 0x82 nanoslp syz-executor 35415 223215 70711 0 3 0x82 kqread syz-executor 70711 455735 59363 0 3 0x10008a sigsusp ksh 59363 352110 71745 0 3 0x98 kqread sshd-session 71745 448849 20576 0 3 0x92 kqread sshd-session 39167 434612 1 0 3 0x100083 ttyin getty 20576 499699 1 0 3 0x88 kqread sshd 23593 232078 12144 74 3 0x1100092 bpf pflogd 12144 148643 1 0 3 0x80 sbwait pflogd 22675 154887 65019 73 3 0x1100090 kqread syslogd 65019 93840 1 0 3 0x100082 sbwait syslogd 39600 194958 1 0 3 0x100080 kqread resolvd 83543 167346 15401 77 3 0x100092 kqread dhcpleased 59920 331486 15401 77 3 0x100092 kqread dhcpleased 15401 217220 1 0 3 0x80 kqread dhcpleased 16205 321262 0 0 3 0x14200 bored smr 29045 148757 0 0 2 0x14200 zerothread 27143 79393 0 0 3 0x14200 aiodoned aiodoned 16610 150819 0 0 3 0x14200 syncer update 61415 182240 0 0 3 0x14200 cleaner cleaner 13790 204779 0 0 3 0x14200 reaper reaper 59854 57180 0 0 3 0x14200 pgdaemon pagedaemon 22292 522250 0 0 3 0x14200 bored viomb 58747 320260 0 0 3 0x40014200 acpi0 acpi0 61844 452669 0 0 3 0x40014200 idle1 89622 499542 0 0 3 0x14200 bored softnet3 64975 220945 0 0 3 0x14200 bored softnet2 31289 512391 0 0 3 0x14200 bored softnet1 68295 283957 0 0 3 0x14200 bored softnet0 36298 222018 0 0 3 0x14200 bored systqmp 90285 255655 0 0 3 0x14200 bored systq 25614 401027 0 0 3 0x14200 tmoslp softclockmp 49694 49234 0 0 3 0x40014200 tmoslp softclock 30320 110538 0 0 3 0x40014200 idle0 1 353311 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 11178K 11361K 166960K 11800 0 pcb 17 12K 12K 166960K 75 0 rtable 227 9K 9K 166960K 570 0 pf 35 17K 21K 166960K 86 0 ifaddr 42 7K 7K 166960K 65 0 ifgroup 55 2K 2K 166960K 103 0 sysctl 1 1K 9K 166960K 8 0 counters 68 36K 38K 166960K 112 0 ioctlops 0 0K 4K 166960K 1530 0 iov 0 0K 20K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1370 86K 87K 166960K 1630 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 426 0 sigio 0 0K 0K 166960K 10 0 proc 72 91K 128K 166960K 554 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 36 0 in_multi 89 6K 6K 166960K 105 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 447 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 157K 166K 166960K 5683 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 44 88K 107K 166960K 1499 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 12 0K 1K 166960K 39 0 temp 45 8688K 8762K 166960K 8561 0 kqueue 15 24K 30K 166960K 83 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 55 0 51 1 0 1 1 0 8 0 rtentry 176 151 0 52 5 0 5 5 0 8 0 unpcb 144 496 0 479 9 5 4 6 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 110 0 106 4 0 4 4 0 8 3 arp 128 20 0 0 1 0 1 1 0 8 0 inpcb 328 343 0 336 6 2 4 5 0 8 3 nd6 144 22 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 4 0 4 1 0 1 1 0 8 1 ppxss 1192 15 0 15 2 1 1 1 0 8 1 pppxif 1504 4 0 4 2 1 1 1 0 8 1 pffrag 232 6 0 2 2 1 1 1 0 482 0 pffrnode 88 6 0 2 2 1 1 1 0 8 0 pffrent 40 8 0 4 2 1 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 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 4 0 1 1 0 1 1 0 8 0 pfstitem 24 38 0 1 1 0 1 1 0 8 0 pfstkey 128 38 0 1 2 0 2 2 0 8 0 pfstate 384 38 0 1 4 0 4 4 0 8 0 pfrule 1344 25 0 19 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 485 0 77 27 1 26 27 0 8 0 art_table 32 488 0 77 4 0 4 4 0 8 0 art_node 16 115 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2129 0 621 96 0 96 96 0 8 0 ffsino 288 2129 0 621 109 0 109 109 0 8 0 nchpl 144 2757 0 1064 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2384 0 0 49 0 49 49 0 8 0 vnodes 216 2384 0 0 133 0 133 133 0 8 0 namei 1024 8749 0 8749 3 2 1 2 0 8 1 percpumem 16 71 0 22 1 0 1 1 0 8 0 kstatmem 264 52 0 26 3 0 3 3 0 8 1 scxspl 216 15353 0 15353 11 5 6 8 1 8 6 plimitpl 152 67 0 48 1 0 1 1 0 8 0 sigapl 424 729 0 677 8 1 7 7 0 8 0 knotepl 120 303 0 0 10 0 10 10 0 8 0 kqueuepl 224 160 0 149 3 2 1 3 0 8 0 pipepl 336 164 0 137 6 3 3 6 0 8 0 fdescpl 520 707 0 675 3 0 3 3 0 8 0 filepl 160 3573 0 3348 16 2 14 16 0 8 3 lockfpl 104 184 0 182 1 0 1 1 0 8 0 lockfspl 48 56 0 54 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 270 0 257 1 0 1 1 0 8 0 zombiepl 144 682 0 677 2 1 1 1 0 8 0 processpl 1240 729 0 677 5 0 5 5 0 8 0 procpl 656 1248 0 1193 7 1 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 728 909 0 881 18 9 9 16 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 222 0 0 14 0 14 14 0 8 0 bufpl 280 6123 0 122 429 0 429 429 0 8 0 anonpl 32 16154 0 0 131 0 131 131 0 246 0 amapchunkpl 152 17962 0 17449 32 6 26 31 0 158 2 amappl16 200 2936 0 2906 43 3 40 40 0 8 34 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 110 0 97 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1347 0 1314 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 109 0 95 1 0 1 1 0 8 0 amappl6 120 171 0 167 1 0 1 1 0 8 0 amappl5 112 117 0 108 1 0 1 1 0 8 0 amappl4 104 317 0 296 1 0 1 1 0 8 0 amappl3 96 3259 0 3144 4 0 4 4 0 8 0 amappl2 88 620 0 555 2 0 2 2 0 8 0 amappl1 80 9188 0 8571 15 1 14 15 0 8 0 amappl 88 4970 0 4796 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 128 254 0 254 2 2 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 707 0 675 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 707 0 675 1 0 1 1 0 8 0 vmmpekpl 168 7470 0 7435 4 1 3 4 0 8 0 vmmpepl 168 50656 0 48647 124 1 123 123 0 357 22 vmsppl 480 706 0 675 5 0 5 5 0 8 0 rwobjpl 72 18731 0 15365 75 0 75 75 0 8 9 pdppl 4096 1422 0 1350 94 20 74 86 0 8 2 pvpl 32 24130 0 0 195 0 195 195 0 265 0 pmappl 256 706 0 675 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 390 0 29 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837d3ff0) 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(ffffffff8397f650) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397f650) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8397f650) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397f650) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsysret(ffff80002a2974a0,5b,4,ffff80002a336c90) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a2974a0,5b,4,ffff80002a336c90) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a336d40) at syscall+0xa43 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a336d40) at syscall+0xa43 sys/arch/amd64/amd64/trap.c:600 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75fbf9624b70, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837d3ff0) 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(ffffffff8397f650) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397f650) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8397f650) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397f650) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsysret(ffff80002a2974a0,5b,4,ffff80002a336c90) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a2974a0,5b,4,ffff80002a336c90) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a336d40) at syscall+0xa43 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a336d40) at syscall+0xa43 sys/arch/amd64/amd64/trap.c:600 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75fbf9624b70, count: -11 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(ffff8000014b2430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000147c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000337dde90) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80620f21c0,81,fffffd80097fb548,ffff8000ffff1738) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068139570,ffff8000ffff1738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8068139570,ffff8000ffff1738) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000ffff1738) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000ffff1738,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff1738,ffff8000337de200,ffff8000337de150) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000337de200) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337de200) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 end trace frame: 0xffff8000337de280, 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(ffff8000014b2430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000147c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff1738) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000337dde90) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80620f21c0,81,fffffd80097fb548,ffff8000ffff1738) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068139570,ffff8000ffff1738) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068139570,ffff8000ffff1738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8068139570,ffff8000ffff1738) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000ffff1738) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000ffff1738,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff1738,ffff8000337de200,ffff8000337de150) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000337de200) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337de200) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72f5db0eb850, count: -15