uvm_fault(0xfffffd806c24eb58, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 TID PID UID PRFLAGS PFLAGS CPU COMMAND dt_ioctl_record_stop(ffff80000154f000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c477280) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80688628b0,81,fffffd80097fb478,ffff8000377fe540) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8073b19428,ffff8000377fe540) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8073b19428,ffff8000377fe540) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000377fe540) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000377fe540,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000377fe540,ffff80003c4775f0,ffff80003c477540) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4775f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4775f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ddfd28209c0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806c24eb58, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff80000154f000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c477280) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80688628b0,81,fffffd80097fb478,ffff8000377fe540) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8073b19428,ffff8000377fe540) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8073b19428,ffff8000377fe540) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000377fe540) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000377fe540,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000377fe540,ffff80003c4775f0,ffff80003c477540) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4775f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4775f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ddfd28209c0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4771b0 rbx 0xffffffff81d2b1b0 dtclose rdx 0 rcx 0xffff8000377fe540 rax 0xffffffff8389cd88 dt_prov_syscall r8 0x10 r9 0x54 r10 0x5fda4cafc7187be0 r11 0x4f22d85b34793d7 r12 0xffff80000006c280 r13 0 r14 0 r15 0xffff8000014e9700 rip 0xffffffff81d2b590 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c477180 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{0}> show proc PROC (syz-executor) tid=208207 pid=55609 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000377fe540 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003b42a558,0xffff80003b42b238 process=0xffff80003c4d44e8 user=0xffff80003c472000, vmspace=0xfffffd806c24eb58 estcpu=34, cpticks=1, pctcpu=0.2, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88682 265602 63681 0 2 0 syz-executor 88682 65865 63681 0 3 0x4000080 fsleep syz-executor 88682 475455 63681 0 3 0x4000080 fsleep syz-executor 76635 308593 49378 0 2 0 syz-executor 76635 300281 49378 0 3 0x4000080 fsleep syz-executor 49634 231117 88964 0 2 0 syz-executor 49634 331004 88964 0 3 0x4000080 bell syz-executor 49634 352388 88964 0 3 0x4000080 fsleep syz-executor 86443 422753 85853 0 2 0 syz-executor 86443 80112 85853 0 2 0x4000000 syz-executor 18988 427403 58976 -1 2 0x10 syz-executor 18988 62611 58976 -1 3 0x4000090 fsleep syz-executor 18988 213944 58976 -1 3 0x4000090 fsleep syz-executor 48971 353190 76344 60929 2 0x10 syz-executor 48971 354309 76344 60929 3 0x4000090 fsleep syz-executor 89199 259921 0 0 3 0x14200 acct acct 18277 200819 28841 0 3 0x82 nanoslp syz-executor 76344 306763 28841 0 3 0x82 nanoslp syz-executor 61846 127134 28841 0 2 0x2 syz-executor 58976 381847 28841 0 3 0x82 nanoslp syz-executor 96466 34079 1 0 3 0x100083 ttyin getty 49378 125538 28841 0 3 0x82 nanoslp syz-executor 88964 149945 28841 0 3 0x82 nanoslp syz-executor 63681 148287 28841 0 3 0x82 nanoslp syz-executor 77607 424953 0 0 3 0x14200 bored sosplice 93626 367395 0 0 3 0x14280 nfsidl nfsio 32520 295207 0 0 3 0x14280 nfsidl nfsio 79206 474892 0 0 3 0x14280 nfsidl nfsio 38569 507916 0 0 3 0x14280 nfsidl nfsio 76723 28839 0 0 3 0x14280 nfsidl nfsio 23243 432971 0 0 3 0x14280 nfsidl nfsio 11024 249682 0 0 3 0x14280 nfsidl nfsio 13217 76126 0 0 3 0x14280 nfsidl nfsio 13560 454248 0 0 3 0x14280 nfsidl nfsio 80623 158396 0 0 3 0x14280 nfsidl nfsio 1833 385862 0 0 3 0x14280 nfsidl nfsio 79064 489063 0 0 3 0x14280 nfsidl nfsio 76036 8234 0 0 3 0x14280 nfsidl nfsio 4841 510571 0 0 3 0x14280 nfsidl nfsio 59512 517363 0 0 3 0x14280 nfsidl nfsio 21211 304039 0 0 3 0x14280 nfsidl nfsio 43272 392642 0 0 3 0x14280 nfsidl nfsio 80518 194047 0 0 3 0x14280 nfsidl nfsio 23522 181582 0 0 3 0x14280 nfsidl nfsio 51827 407166 0 0 3 0x14280 nfsidl nfsio 66421 458901 53268 0 3 0x100082 sbwait arp 53268 5504 1 0 3 0x10008a sigsusp sh 85853 60012 28841 0 3 0x82 nanoslp syz-executor 28841 114653 98108 0 3 0x82 kqread syz-executor 98108 142087 16726 0 3 0x10008a sigsusp ksh 16726 311279 56303 0 3 0x98 kqread sshd-session 56303 336360 91454 0 3 0x92 kqread sshd-session 91454 367337 1 0 3 0x88 kqread sshd 98056 448944 11919 74 3 0x1100092 bpf pflogd 11919 71807 1 0 3 0x80 sbwait pflogd 69225 206258 91677 73 3 0x1100090 kqread syslogd 91677 378323 1 0 3 0x100082 sbwait syslogd 64723 63313 1 0 3 0x100080 kqread resolvd 7942 325881 89439 77 3 0x100092 kqread dhcpleased 13372 454055 89439 77 3 0x100092 kqread dhcpleased 89439 122806 1 0 3 0x80 kqread dhcpleased 22959 87787 0 0 3 0x14200 bored smr 69697 523317 0 0 2 0x14200 zerothread 9752 201413 0 0 3 0x14200 aiodoned aiodoned 72688 175632 0 0 3 0x14200 syncer update 47278 509658 0 0 3 0x14200 cleaner cleaner 90655 51631 0 0 3 0x14200 reaper reaper 95837 124920 0 0 3 0x14200 pgdaemon pagedaemon 77832 298137 0 0 3 0x14200 bored viomb 44524 423662 0 0 3 0x40014200 acpi0 acpi0 32862 154920 0 0 7 0x40014200 idle1 73967 387791 0 0 3 0x14200 bored softnet3 19037 44083 0 0 3 0x14200 bored softnet2 99508 418522 0 0 3 0x14200 bored softnet1 15483 415334 0 0 3 0x14200 bored softnet0 12098 355070 0 0 3 0x14200 bored systqmp 66570 409014 0 0 3 0x14200 bored systq 39753 502239 0 0 3 0x14200 tmoslp softclockmp 48186 432192 0 0 2 0x40014200 softclock 4995 9177 0 0 3 0x40014200 idle0 1 1869 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 61846 (syz-executor) thread 0xffff80003b42a2c8 (127134) exclusive rrwlock inode r = 0 (0xfffffd806e09ee30) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e2fef60) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10235 11143K 12486K 166960K 15973 0 pcb 17 17K 20K 166960K 623 0 rtable 212 10K 10K 166960K 831 0 pf 35 17K 82K 166960K 225 0 ifaddr 35 6K 8K 166960K 170 0 ifgroup 55 2K 2K 166960K 289 0 sysctl 4 1K 9K 166960K 24 0 counters 68 36K 37K 166960K 356 0 ioctlops 0 0K 4K 166960K 2066 0 iov 0 0K 24K 166960K 178 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1531 96K 96K 166960K 3951 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 52 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 99 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 248K 166960K 2596 0 sigio 0 0K 0K 166960K 44 0 proc 73 91K 140K 166960K 1045 0 subproc 81 5K 5K 166960K 154 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 390 0 in_multi 66 4K 6K 166960K 301 0 ether_multi 1 0K 0K 166960K 15 0 mrt 1 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 1070 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 174K 188K 166960K 24162 0 UVM aobj 25 4K 4K 166960K 26 0 pinsyscall 45 90K 109K 166960K 4023 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 149 0 NDP 12 0K 1K 166960K 120 0 temp 80 8688K 8811K 166960K 121114 0 kqueue 13 20K 33K 166960K 500 0 SYN cache 2 10K 18K 166960K 3 0 ddb{0}> 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 120 291 0 286 4 3 1 3 0 8 0 rtentry 176 257 0 169 6 0 6 6 0 8 0 unpcb 144 2003 0 1983 18 9 9 9 0 8 8 syncache 336 30 0 30 4 3 1 1 0 8 1 tcpqe 32 12 0 12 3 3 0 1 0 8 0 tcpcb 808 1008 0 996 29 21 8 8 0 8 6 arp 128 47 0 31 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 6 0 6 2 2 0 1 0 8 0 inpcb 384 3185 0 3169 38 28 10 14 0 8 6 nd6 144 56 0 38 1 0 1 1 0 8 0 pkpcb 40 24 0 23 5 4 1 1 0 8 0 kcovpl 48 17 0 8 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 113 0 113 4 3 1 1 0 8 1 pppxif 1504 15 0 15 5 4 1 1 0 8 1 pffrag 232 15 0 10 1 0 1 1 0 482 0 pffrnode 88 14 0 10 1 0 1 1 0 8 0 pffrent 40 35 0 30 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 pfstitem 24 121 0 68 1 0 1 1 0 8 0 pfstkey 128 121 0 68 2 0 2 2 0 8 0 pfstate 384 121 0 68 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 5 0 5 4 4 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1087 0 754 36 12 24 27 0 8 0 art_table 32 1090 0 754 4 0 4 4 0 8 0 art_node 16 254 0 179 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 16 1 0 1 1 0 8 0 semapl 112 96 0 86 1 0 1 1 0 8 0 shmpl 112 23 0 1 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 5807 0 4295 95 0 95 95 0 8 0 ffsino 288 5807 0 4295 109 0 109 109 0 8 0 nchpl 144 9265 0 7549 65 0 65 65 0 8 0 rtmask 32 6 0 6 3 3 0 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 38078 0 38078 2 1 1 2 0 8 1 percpumem 16 193 0 144 1 0 1 1 0 8 0 kstatmem 264 182 0 152 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 10 0 10 4 3 1 1 0 8 1 scxspl 216 31287 0 31287 15 13 2 8 1 8 2 plimitpl 152 688 0 669 1 0 1 1 0 8 0 sigapl 424 2899 0 2826 9 0 9 9 0 8 0 knotepl 120 717 0 0 22 0 22 22 0 8 0 kqueuepl 224 1249 0 1237 17 12 5 5 0 8 3 pipepl 336 551 0 519 17 8 9 9 0 8 6 fdescpl 520 2855 0 2822 3 0 3 3 0 8 0 filepl 160 22542 0 22297 48 28 20 26 0 8 8 lockfpl 104 1063 0 1060 3 2 1 2 0 8 0 lockfspl 48 289 0 286 1 0 1 1 0 8 0 sessionpl 144 58 0 49 1 0 1 1 0 8 0 pgrppl 48 172 0 154 1 0 1 1 0 8 0 ucredpl 104 4230 0 4215 1 0 1 1 0 8 0 zombiepl 144 2827 0 2826 1 0 1 1 0 8 0 processpl 1208 2899 0 2826 7 1 6 6 0 8 0 procpl 656 6579 0 6497 8 0 8 8 0 8 0 srpgc 96 23 0 23 5 5 0 1 0 8 0 sosppl 168 16 0 16 7 6 1 1 0 8 1 sockpl 728 5611 0 5569 48 32 16 23 0 8 8 mcl64k 65536 7 0 0 1 0 1 1 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 35 0 0 5 1 4 5 0 8 0 mtagpl 96 112 0 0 3 0 3 3 0 8 0 mbufpl 256 1302 0 0 79 0 79 79 0 8 0 bufpl 280 8513 0 2371 439 0 439 439 0 8 0 anonpl 32 10091 0 0 82 0 82 82 0 246 0 amapchunkpl 152 81715 0 81158 51 21 30 31 0 158 1 amappl16 200 5191 0 5090 33 24 9 18 0 8 0 amappl15 192 24 0 24 1 1 0 1 0 8 0 amappl14 184 222 0 209 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 3676 0 3642 3 0 3 3 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 272 0 271 1 0 1 1 0 8 0 amappl8 136 49 0 45 1 0 1 1 0 8 0 amappl7 128 161 0 147 1 0 1 1 0 8 0 amappl6 120 290 0 285 1 0 1 1 0 8 0 amappl5 112 159 0 148 1 0 1 1 0 8 0 amappl4 104 453 0 431 1 0 1 1 0 8 0 amappl3 96 17074 0 16962 4 0 4 4 0 8 0 amappl2 88 1006 0 939 2 0 2 2 0 8 0 amappl1 80 25007 0 24375 16 1 15 16 0 8 0 amappl 88 22743 0 22572 6 1 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 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 128 255 0 255 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 21 0 20 1 0 1 1 0 8 0 aobjpl 72 25 0 1 1 0 1 1 0 8 0 uaddrrnd 24 2855 0 2822 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2855 0 2822 1 0 1 1 0 8 0 vmmpekpl 168 24252 0 24193 4 0 4 4 0 8 0 vmmpepl 168 184796 0 182630 122 18 104 108 0 357 0 vmsppl 480 2854 0 2822 5 0 5 5 0 8 0 rwobjpl 72 52128 0 45128 132 0 132 132 0 8 0 pdppl 4096 5718 0 5644 135 59 76 86 0 8 2 pvpl 32 19569 0 0 159 1 158 159 0 265 0 pmappl 256 2854 0 2822 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 547 0 112 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff80000154f000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000377fe540) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c477280) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80688628b0,81,fffffd80097fb478,ffff8000377fe540) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8073b19428,ffff8000377fe540) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8073b19428,ffff8000377fe540) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8073b19428,ffff8000377fe540) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000377fe540) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000377fe540,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000377fe540,ffff80003c4775f0,ffff80003c477540) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4775f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4775f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ddfd28209c0, count: -12 ddb{0}> machine ddbcpu 1