uvm_fault(0xfffffd806b54d7c0, 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 365313 41197 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff80000147e000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036c32ef0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8062c37130,81,fffffd80097fb478,ffff8000328094e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7da1b0,ffff8000328094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7da1b0,ffff8000328094e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000328094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000328094e0,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000328094e0,ffff800036c33260,ffff800036c331b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036c33260) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036c33260) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eeb96826d60, 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(0xfffffd806b54d7c0, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff80000147e000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036c32ef0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8062c37130,81,fffffd80097fb478,ffff8000328094e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7da1b0,ffff8000328094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7da1b0,ffff8000328094e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000328094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000328094e0,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000328094e0,ffff800036c33260,ffff800036c331b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036c33260) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036c33260) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eeb96826d60, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800036c32e20 rbx 0x1 rdx 0 rcx 0xffff8000328094e0 rax 0xffffffff837b9b28 dt_prov_syscall r8 0 r9 0 r10 0xf02e04510a4bdfb9 r11 0xc4077f2124a81e3e r12 0 r13 0 r14 0 r15 0xffff80000148c600 rip 0xffffffff81acc2e8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800036c32df0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=105177 pid=98326 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000328094e0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000328082b8,0xffff800032809a20 process=0xffff800036025d00 user=0xffff800036c2e000, vmspace=0xfffffd806b54d7c0 estcpu=24, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11708 292238 40493 0 2 0 syz-executor 11708 134153 40493 0 3 0x4000080 fsleep syz-executor 84353 165616 3454 0 2 0 syz-executor 84353 187325 3454 0 2 0x4000000 syz-executor 84353 68547 3454 0 3 0x4000080 fsleep syz-executor 41197 365313 29740 0 7 0 syz-executor 41197 162344 29740 0 3 0x4000000 smrbar syz-executor 41197 485447 29740 0 3 0x4000000 clonelk syz-executor 3037 116859 86898 0 2 0 syz-executor 3037 100881 86898 0 3 0x4000080 fsleep syz-executor 43000 264718 21944 0 2 0 syz-executor 43000 50668 21944 0 3 0x4000080 piperd syz-executor 43000 258528 21944 0 2 0x4000000 syz-executor 43000 437343 21944 0 2 0x4000000 syz-executor 16892 427101 0 0 3 0x14200 acct acct 10830 117340 0 0 3 0x14200 bored sosplice 21944 54127 38715 0 3 0x82 nanoslp syz-executor 2968 185188 38715 0 3 0x2 biowait syz-executor 86898 342720 38715 0 3 0x82 nanoslp syz-executor 79039 409615 38715 0 3 0x82 nanoslp syz-executor 36426 305949 38715 0 3 0x82 nanoslp syz-executor 40493 26778 38715 0 3 0x82 nanoslp syz-executor 3454 318488 38715 0 3 0x82 nanoslp syz-executor 29740 343645 38715 0 3 0x82 nanoslp syz-executor 38715 198560 17225 0 3 0x82 kqread syz-executor 17225 153157 99945 0 3 0x10008a sigsusp ksh 99945 172653 80699 0 3 0x98 kqread sshd-session 80699 177567 68500 0 3 0x92 kqread sshd-session 49983 145688 1 0 3 0x100083 ttyin getty 68500 229447 1 0 3 0x88 kqread sshd 86254 37211 25521 74 3 0x1100092 bpf pflogd 25521 29022 1 0 3 0x80 sbwait pflogd 63286 345142 57374 73 3 0x1100090 kqread syslogd 57374 39614 1 0 3 0x100082 sbwait syslogd 38213 478513 1 0 3 0x100080 kqread resolvd 93412 300086 60660 77 3 0x100092 kqread dhcpleased 95792 76686 60660 77 3 0x100092 kqread dhcpleased 60660 476837 1 0 3 0x80 kqread dhcpleased 72487 96735 0 0 3 0x14200 bored smr 70331 93648 0 0 2 0x14200 zerothread 97392 100969 0 0 3 0x14200 aiodoned aiodoned 55052 355563 0 0 3 0x14200 syncer update 32485 217106 0 0 3 0x14200 cleaner cleaner 54153 265306 0 0 3 0x14200 reaper reaper 17558 59170 0 0 3 0x14200 pgdaemon pagedaemon 2645 145372 0 0 3 0x14200 bored viomb 51913 159968 0 0 3 0x40014200 acpi0 acpi0 44050 54662 0 0 3 0x40014200 idle1 35762 292630 0 0 3 0x14200 bored softnet7 17693 356999 0 0 3 0x14200 bored softnet6 85318 26868 0 0 3 0x14200 bored softnet5 84293 182538 0 0 3 0x14200 bored softnet4 1107 83678 0 0 3 0x14200 bored softnet3 38800 138167 0 0 3 0x14200 bored softnet2 93409 149860 0 0 3 0x14200 bored softnet1 77239 240886 0 0 3 0x14200 bored softnet0 84937 471054 0 0 3 0x14200 bored systqmp 3252 468885 0 0 3 0x14200 bored systq 84943 399909 0 0 3 0x14200 tmoslp softclockmp 60366 375733 0 0 3 0x40014200 tmoslp softclock 353 229029 0 0 3 0x40014200 idle0 1 59906 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 41197 (syz-executor) thread 0xffff800038038d28 (162344) exclusive rwlock clonelk r = 0 (0xffffffff83777e58) #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 if_clone_destroy+0x67 sys/net/if.c:-1 #3 tun_dev_close+0x1d9 sys/net/if_tun.c:523 #4 spec_close+0x417 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_close+0xa3 sys/kern/vfs_vnops.c:292 #7 sys_ktrace+0x14e sys/kern/kern_ktrace.c:561 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 2968 (syz-executor) thread 0xffff8000ffff27d8 (185188) exclusive rrwlock inode r = 0 (0xfffffd806be0a7c8) #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:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806be0a8f0) #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:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 11067K 11173K 166960K 11331 0 pcb 17 12K 12K 166960K 24 0 rtable 211 6K 6K 166960K 271 0 pf 37 18K 81K 166960K 51 0 ifaddr 44 7K 7K 166960K 47 0 ifgroup 59 2K 2K 166960K 61 0 sysctl 3 1K 9K 166960K 7 0 counters 70 37K 37K 166960K 74 0 ioctlops 0 0K 4K 166960K 1561 0 iov 1 16K 20K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1467 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 3 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 204 0 sigio 0 0K 0K 166960K 2 0 proc 72 115K 164K 166960K 537 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 9 0 in_multi 99 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 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 233 159K 173K 166960K 3622 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 42 84K 101K 166960K 1312 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 11 0 NDP 13 0K 2K 166960K 30 0 temp 38 8654K 8718K 166960K 7449 0 kqueue 13 20K 26K 166960K 35 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 42 0 39 1 0 1 1 0 8 0 rtentry 176 97 0 1 5 0 5 5 0 8 0 unpcb 144 257 0 238 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 32 0 25 1 0 1 1 0 8 0 arp 128 11 0 0 1 0 1 1 0 8 0 inpcb 328 134 0 124 2 0 2 2 0 8 0 nd6 144 17 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 18 0 0 1 0 1 1 0 8 0 pfstkey 128 148 0 130 1 0 1 1 0 8 0 pfstate 384 83 0 65 2 0 2 2 0 8 0 pfrule 1344 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 437 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 97 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 3 0 2 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1746 0 232 95 0 95 95 0 8 0 ffsino 296 1746 0 232 117 0 117 117 0 8 0 nchpl 144 2033 0 341 64 0 64 64 0 8 0 uvmvnodes 80 1851 0 0 38 0 38 38 0 8 0 vnodes 216 1851 0 0 103 0 103 103 0 8 0 namei 1024 6427 0 6426 2 0 2 2 0 8 1 percpumem 16 52 0 2 1 0 1 1 0 8 0 kstatmem 264 30 0 2 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 7391 0 7390 9 1 8 8 1 8 7 plimitpl 152 40 0 23 1 0 1 1 0 8 0 sigapl 424 517 0 462 7 0 7 7 0 8 0 knotepl 120 305 0 0 10 0 10 10 0 8 0 kqueuepl 224 47 0 38 2 0 2 2 0 8 1 pipepl 344 180 0 151 3 0 3 3 0 8 0 fdescpl 528 493 0 462 3 0 3 3 0 8 0 filepl 160 2437 0 2208 18 0 18 18 0 8 8 lockfpl 104 93 0 90 2 0 2 2 0 8 1 lockfspl 48 15 0 12 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 104 336 0 322 1 0 1 1 0 8 0 zombiepl 144 464 0 462 1 0 1 1 0 8 0 processpl 1232 517 0 462 5 0 5 5 0 8 0 procpl 664 641 0 577 7 0 7 7 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 752 433 0 401 18 6 12 18 0 8 8 mcl64k 65536 2 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 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 139 0 0 9 0 9 9 0 8 0 bufpl 280 3005 0 122 206 0 206 206 0 8 0 anonpl 32 5429 0 0 44 0 44 44 0 246 0 amapchunkpl 152 10616 0 10149 28 3 25 25 0 158 5 amappl16 200 2085 0 2064 5 2 3 5 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 117 0 105 1 0 1 1 0 8 0 amappl13 176 9 0 7 1 0 1 1 0 8 0 amappl12 168 1152 0 1120 4 1 3 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 195 0 192 1 0 1 1 0 8 0 amappl5 112 128 0 119 1 0 1 1 0 8 0 amappl4 104 299 0 280 1 0 1 1 0 8 0 amappl3 96 1636 0 1545 3 0 3 3 0 8 0 amappl2 88 731 0 653 2 0 2 2 0 8 0 amappl1 80 8534 0 7940 14 0 14 14 0 8 0 amappl 88 2917 0 2757 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 493 0 462 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 493 0 462 1 0 1 1 0 8 0 vmmpekpl 168 5795 0 5758 2 0 2 2 0 8 0 vmmpepl 168 37896 0 35945 89 0 89 89 0 357 1 vmsppl 488 492 0 462 5 0 5 5 0 8 1 rwobjpl 80 15234 0 12476 57 0 57 57 0 8 0 pdppl 4096 994 0 924 100 28 72 84 0 8 2 pvpl 32 13204 0 0 107 0 107 107 0 265 0 pmappl 256 492 0 462 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 266 0 30 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83837ff0) 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(ffffffff838727a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000328074a0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838727a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7638b47ef100, count: 5 ddb{0}> trace x86_ipi_db(ffffffff83837ff0) 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(ffffffff838727a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff8000328074a0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838727a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7638b47ef100, count: -10 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff80000147e000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036c32ef0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8062c37130,81,fffffd80097fb478,ffff8000328094e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7da1b0,ffff8000328094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7da1b0,ffff8000328094e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000328094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000328094e0,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000328094e0,ffff800036c33260,ffff800036c331b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036c33260) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036c33260) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eeb96826d60, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff80000147e000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000328094e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800036c32ef0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8062c37130,81,fffffd80097fb478,ffff8000328094e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7da1b0,ffff8000328094e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7da1b0,ffff8000328094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7da1b0,ffff8000328094e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000328094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000328094e0,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000328094e0,ffff800036c33260,ffff800036c331b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036c33260) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036c33260) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eeb96826d60, count: -12