uvm_fault(0xfffffd806eedf5c0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 110224 67157 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a29a670) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e362d90,81,fffffd80097fb820,ffff80002efd6fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d855b90,ffff80002efd6fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d855b90,ffff80002efd6fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002efd6fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002efd6fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002efd6fb8,ffff80002a29a9e0,ffff80002a29a930) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a29a9e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a29a9e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f325fb5ffb0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806eedf5c0, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a29a670) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e362d90,81,fffffd80097fb820,ffff80002efd6fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d855b90,ffff80002efd6fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d855b90,ffff80002efd6fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002efd6fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002efd6fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002efd6fb8,ffff80002a29a9e0,ffff80002a29a930) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a29a9e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a29a9e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f325fb5ffb0, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a29a5a0 rbx 0x1 rdx 0 rcx 0xffff80002efd6fb8 rax 0xffffffff83822498 dt_prov_syscall r8 0 r9 0 r10 0x594c30e26ff9e982 r11 0x6fe76d77e3298d79 r12 0 r13 0 r14 0 r15 0xffff8000014a3d00 rip 0xffffffff810e8838 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a29a570 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=89931 pid=47506 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002efd6fb8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe8fb0,0xffff80002efd6568 process=0xffff8000fffef508 user=0xffff80002a295000, vmspace=0xfffffd806eedf5c0 estcpu=36, cpticks=5, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67157 110224 6910 0 7 0 syz-executor 67157 486557 6910 0 2 0x4000000 syz-executor 67157 138556 6910 0 2 0x4000000 syz-executor 6398 86782 24748 0 2 0 syz-executor 6398 129187 24748 0 3 0x4000080 fsleep syz-executor 88524 434069 6189 0 3 0x80 nanoslp syz-executor 88524 506212 6189 0 3 0x4000080 fsleep syz-executor 88524 323525 6189 0 3 0x4000080 fsleep syz-executor 59352 368627 0 0 3 0x14200 acct acct 97341 444079 1 0 3 0x100083 ttyin getty 96401 130739 11775 0 3 0x2 biowait syz-executor 32635 317714 11775 0 3 0x10000082 nanoslp syz-executor 34968 162069 0 0 3 0x14200 bored sosplice 28127 133637 87336 0 3 0x100082 sbwait arp 87336 387822 70132 0 3 0x10008a sigsusp sh 70132 288311 11775 0 3 0x82 wait syz-executor 97768 348257 11775 0 3 0x82 nanoslp syz-executor 35046 388517 11775 0 2 0x2 syz-executor 6189 300653 11775 0 3 0x82 nanoslp syz-executor 24748 184279 11775 0 3 0x82 nanoslp syz-executor 6910 210468 11775 0 3 0x82 nanoslp syz-executor 11775 485767 18714 0 2 0x2 syz-executor 18714 157310 91457 0 3 0x10008a sigsusp ksh 91457 291390 46963 0 3 0x98 kqread sshd-session 46963 317846 12916 0 3 0x92 kqread sshd-session 12916 109211 1 0 3 0x88 kqread sshd 18586 94163 60753 74 3 0x1100092 bpf pflogd 60753 319597 1 0 3 0x80 sbwait pflogd 58109 58115 62210 73 3 0x1100090 kqread syslogd 62210 84795 1 0 3 0x100082 sbwait syslogd 11169 8216 1 0 3 0x100080 kqread resolvd 17580 304973 11000 77 3 0x100092 kqread dhcpleased 96175 36438 11000 77 3 0x100092 kqread dhcpleased 11000 35054 1 0 3 0x80 kqread dhcpleased 62057 238931 0 0 3 0x14200 bored smr 28706 348581 0 0 2 0x14200 zerothread 29009 444629 0 0 3 0x14200 aiodoned aiodoned 73192 155998 0 0 3 0x14200 syncer update 38636 342556 0 0 3 0x14200 cleaner cleaner 68183 357441 0 0 3 0x14200 reaper reaper 47263 26977 0 0 3 0x14200 pgdaemon pagedaemon 83720 505462 0 0 3 0x14200 bored viomb 53346 316053 0 0 3 0x40014200 acpi0 acpi0 88434 250655 0 0 3 0x40014200 idle1 475 468642 0 0 3 0x14200 bored softnet1 80405 285095 0 0 3 0x14200 bored softnet0 36154 386597 0 0 3 0x14200 smrbar systqmp 9246 183885 0 0 3 0x14200 bored systq 35376 368940 0 0 3 0x14200 tmoslp softclockmp 77471 447047 0 0 3 0x40014200 tmoslp softclock 97443 71350 0 0 3 0x40014200 idle0 1 9122 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 96401 (syz-executor) thread 0xffff80002efd6d20 (130739) exclusive rrwlock inode r = 0 (0xfffffd806ff07490) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80653b18f8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 36154 (systqmp) thread 0xffff8000ffffe000 (386597) shared rwlock systqmp r = 0 (0xffffffff8379f768) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 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 10221 11074K 11241K 166960K 12289 0 pcb 17 14K 16K 166960K 456 0 rtable 191 8K 10K 166960K 678 0 pf 40 18K 67486K 166960K 196 0 ifaddr 35 5K 7K 166960K 115 0 ifgroup 59 2K 3K 166960K 213 0 sysctl 4 1K 9K 166960K 13 0 counters 70 37K 38K 166960K 214 0 ioctlops 0 0K 4K 166960K 1720 0 iov 0 0K 28K 166960K 93 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 90K 166960K 2610 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 12 0K 1K 166960K 81 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 232K 166960K 1436 0 sigio 0 0K 0K 166960K 26 0 proc 75 131K 164K 166960K 756 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 195 0 in_multi 57 4K 6K 166960K 172 0 ether_multi 1 0K 0K 166960K 9 0 mrt 3 0K 0K 166960K 11 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 631 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 161K 176K 166960K 15001 0 UVM aobj 13 2K 2K 166960K 13 0 pinsyscall 42 84K 104K 166960K 2623 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 234 0 NDP 14 0K 1K 166960K 78 0 temp 78 8656K 8909K 166960K 59975 0 kqueue 13 20K 32K 166960K 286 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 120 306 0 302 6 5 1 3 0 8 0 rtentry 176 170 0 96 5 0 5 5 0 8 0 unpcb 144 1032 0 1013 9 7 2 6 0 8 1 syncache 336 8 0 8 4 4 0 1 0 8 0 tcpcb 736 472 0 468 13 9 4 4 0 8 3 arp 136 28 0 8 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 1747 0 1740 25 18 7 9 0 8 6 nd6 152 35 0 21 1 0 1 1 0 8 0 pkpcb 40 10 0 10 4 3 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 49 0 49 2 1 1 1 0 8 1 pppxif 1504 14 0 14 3 2 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 14 0 5 1 0 1 1 0 482 0 pffrnode 88 14 0 5 1 0 1 1 0 8 0 pffrent 40 59 0 49 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 89 0 30 1 0 1 1 0 8 0 pfstkey 128 98 0 39 2 0 2 2 0 8 0 pfstate 384 92 0 35 6 0 6 6 0 8 0 pfrule 1344 32 0 26 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 668 0 344 28 4 24 27 0 8 0 art_table 40 671 0 344 5 0 5 5 0 8 0 art_node 32 166 0 96 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 79 0 69 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4316 0 2808 96 1 95 96 0 8 0 ffsino 296 4316 0 2808 118 0 118 118 0 8 0 nchpl 144 6290 0 4588 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 1 0 1 0 8 0 vnodes 216 4964 0 0 276 0 276 276 0 8 0 namei 1024 21694 0 21693 5 4 1 2 0 8 0 percpumem 16 122 0 72 1 0 1 1 0 8 0 kstatmem 264 122 0 92 5 2 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 3 2 1 1 0 8 1 scxspl 216 43622 0 43621 12 10 2 8 1 8 1 plimitpl 152 413 0 395 1 0 1 1 0 8 0 sigapl 424 1736 0 1687 7 0 7 7 0 8 0 knotepl 120 519 0 0 16 0 16 16 0 8 0 kqueuepl 224 506 0 497 6 3 3 3 0 8 2 pipepl 344 248 0 220 4 0 4 4 0 8 0 fdescpl 528 1718 0 1688 3 0 3 3 0 8 0 filepl 160 11671 0 11453 32 17 15 18 0 8 4 lockfpl 104 741 0 739 4 2 2 2 0 8 1 lockfspl 48 182 0 180 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 54 0 37 1 0 1 1 0 8 0 ucredpl 104 1889 0 1875 1 0 1 1 0 8 0 zombiepl 144 1689 0 1687 2 1 1 1 0 8 0 processpl 1232 1736 0 1687 5 0 5 5 0 8 0 procpl 664 3959 0 3905 7 1 6 7 0 8 0 sosppl 168 12 0 12 3 2 1 1 0 8 1 sockpl 752 3140 0 3110 46 35 11 17 0 8 7 mcl64k 65536 8 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 126 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 53 0 0 7 0 7 7 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 3112 0 0 195 0 195 195 0 8 0 bufpl 280 20360 0 14223 439 0 439 439 0 8 0 anonpl 32 13619 0 0 110 0 110 110 0 246 0 amapchunkpl 152 50435 0 49982 40 12 28 31 0 158 4 amappl16 200 6633 0 6599 64 52 12 27 0 8 8 amappl15 192 3 0 3 2 2 0 1 0 8 0 amappl14 184 4 0 4 3 2 1 1 0 8 1 amappl13 176 441 0 439 1 0 1 1 0 8 0 amappl12 168 2104 0 2062 3 0 3 3 0 8 0 amappl11 160 97 0 97 1 1 0 1 0 8 0 amappl10 152 57 0 42 1 0 1 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 88 0 86 1 0 1 1 0 8 0 amappl6 120 307 0 291 1 0 1 1 0 8 0 amappl5 112 103 0 92 1 0 1 1 0 8 0 amappl4 104 453 0 421 1 0 1 1 0 8 0 amappl3 96 8838 0 8764 4 1 3 3 0 8 0 amappl2 88 1871 0 1794 2 0 2 2 0 8 0 amappl1 80 16093 0 15479 15 0 15 15 0 8 0 amappl 88 13977 0 13831 5 0 5 5 0 92 0 uvmvnodes 80 4964 0 0 102 0 102 102 0 8 0 dma32768 32768 2 0 2 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 2 0 2 2 1 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 257 0 257 4 3 1 1 0 8 1 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1718 0 1688 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1718 0 1688 1 0 1 1 0 8 0 vmmpekpl 168 15404 0 15354 3 0 3 3 0 8 0 vmmpepl 168 117174 0 115327 124 19 105 109 0 357 6 vmsppl 488 1717 0 1688 5 0 5 5 0 8 0 rwobjpl 80 38094 0 32167 122 0 122 122 0 8 0 pdppl 4096 3444 0 3376 108 34 74 84 0 8 6 pvpl 32 21832 0 0 177 0 177 177 0 265 0 pmappl 256 1717 0 1688 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 491 0 62 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837b6ff0) 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(ffffffff838b9b90) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838b9b90) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000327de070,ffff80000007aa80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x74814c7c7fc0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff837b6ff0) 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(ffffffff838b9b90) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838b9b90) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000327de070,ffff80000007aa80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x74814c7c7fc0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a29a670) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e362d90,81,fffffd80097fb820,ffff80002efd6fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d855b90,ffff80002efd6fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d855b90,ffff80002efd6fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002efd6fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002efd6fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002efd6fb8,ffff80002a29a9e0,ffff80002a29a930) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a29a9e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a29a9e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f325fb5ffb0, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002efd6fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a29a670) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e362d90,81,fffffd80097fb820,ffff80002efd6fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d855b90,ffff80002efd6fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d855b90,ffff80002efd6fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d855b90,ffff80002efd6fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002efd6fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002efd6fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002efd6fb8,ffff80002a29a9e0,ffff80002a29a930) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a29a9e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a29a9e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f325fb5ffb0, count: -12