login: uvm_fault(0xfffffd800eca9d78, 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 243180 28974 0 0 0x4000000 0 syz-executor dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a314b50) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ed9a130,81,fffffd80097fd888,ffff8000fffe7cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d868658,ffff8000fffe7cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806d868658,ffff8000fffe7cb8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe7cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe7cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe7cb8,ffff80002a314ec0,ffff80002a314e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a314ec0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a314ec0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593331954e0, 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(0xfffffd800eca9d78, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a314b50) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ed9a130,81,fffffd80097fd888,ffff8000fffe7cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d868658,ffff8000fffe7cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806d868658,ffff8000fffe7cb8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe7cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe7cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe7cb8,ffff80002a314ec0,ffff80002a314e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a314ec0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a314ec0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593331954e0, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a314a80 rbx 0x1 rdx 0 rcx 0xffff8000fffe7cb8 rax 0xffffffff83900020 dt_prov_static r8 0 r9 0x1 r10 0x8f088ecb6bb66048 r11 0x1d4e731ca4353b3b r12 0 r13 0 r14 0 r15 0xffff800001628000 rip 0xffffffff83217b98 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a314a50 ss 0 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=365099 pid=12609 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe7cb8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a232d08,0xffff800031b9fcb8 process=0xffff8000fffe9360 user=0xffff80002a30f000, vmspace=0xfffffd800eca9d78 estcpu=34, cpticks=6, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17699 446024 3303 0 2 0 syz-executor 28974 50452 34397 0 3 0x80 nanoslp syz-executor 28974 186849 34397 0 3 0x4000080 fsleep syz-executor 28974 243180 34397 0 7 0x4000000 syz-executor 78332 275068 46434 0 2 0 syz-executor 78332 209331 46434 0 3 0x4000080 fifor syz-executor 78332 17080 46434 0 3 0x4000080 fifor syz-executor 59049 104152 4342 0 2 0 syz-executor 59049 179600 4342 0 3 0x4000080 fsleep syz-executor 62565 294060 70062 0 2 0 syz-executor 62565 236301 70062 0 3 0x4000080 fsleep syz-executor 60148 301117 12174 0 2 0 syz-executor 60148 79507 12174 0 3 0x4000080 ttyout syz-executor 60148 420867 12174 0 3 0x4000080 fsleep syz-executor 6949 448425 95252 0 2 0x10 syz-executor 6949 79462 95252 0 3 0x4000090 fsleep syz-executor 6949 265742 95252 0 2 0x4000010 syz-executor 6949 476771 95252 0 3 0x4000090 fsleep syz-executor 69393 250014 1 0 3 0x100083 ttyin getty 46434 198875 2316 0 3 0x82 nanoslp syz-executor 52962 47397 0 0 3 0x14200 acct acct 34397 402243 2316 0 3 0x82 nanoslp syz-executor 75043 63882 0 0 3 0x14280 nfsidl nfsio 27972 439373 0 0 3 0x14280 nfsidl nfsio 65210 172476 0 0 3 0x14280 nfsidl nfsio 79799 242148 0 0 3 0x14280 nfsidl nfsio 48301 330358 2316 0 3 0x82 nanoslp syz-executor 4342 169927 2316 0 3 0x82 nanoslp syz-executor 70062 350580 2316 0 3 0x82 nanoslp syz-executor 3303 280945 2316 0 3 0x82 nanoslp syz-executor 12174 515561 2316 0 3 0x82 nanoslp syz-executor 95252 115999 2316 0 3 0x82 nanoslp syz-executor 2316 322890 95084 0 3 0x82 kqread syz-executor 95084 357799 65638 0 3 0x10008a sigsusp ksh 65638 384212 33308 0 3 0x98 kqread sshd-session 33308 317300 52605 0 3 0x92 kqread sshd-session 52605 414057 1 0 3 0x88 kqread sshd 10189 240546 77841 74 3 0x1100092 bpf pflogd 77841 468122 1 0 3 0x80 sbwait pflogd 31391 465991 25656 73 3 0x1100090 kqread syslogd 25656 436053 1 0 3 0x100082 sbwait syslogd 71644 224175 1 0 3 0x100080 kqread resolvd 65695 484113 4621 77 3 0x100092 kqread dhcpleased 29715 171479 4621 77 3 0x100092 kqread dhcpleased 4621 87694 1 0 3 0x80 kqread dhcpleased 50748 363576 0 0 3 0x14200 bored smr 59905 380068 0 0 2 0x14200 zerothread 90462 89201 0 0 3 0x14200 aiodoned aiodoned 35322 252471 0 0 3 0x14200 syncer update 80416 352689 0 0 3 0x14200 cleaner cleaner 84715 43446 0 0 2 0x14200 reaper 95665 290086 0 0 3 0x14200 pgdaemon pagedaemon 48095 175972 0 0 3 0x14200 bored viomb 65977 99541 0 0 3 0x40014200 acpi0 acpi0 39314 352370 0 0 3 0x40014200 idle1 56546 111092 0 0 3 0x14200 bored softnet1 87118 200606 0 0 3 0x14200 bored softnet0 10756 403115 0 0 3 0x14200 smrbar systqmp 46328 119676 0 0 3 0x14200 bored systq 64846 444047 0 0 3 0x14200 tmoslp softclockmp 66492 351115 0 0 3 0x40014200 tmoslp softclock 93144 440337 0 0 3 0x40014200 idle0 1 446772 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 17699 (syz-executor) thread 0xffff8000fffe7a20 (446024) exclusive rwlock vmmaplk r = 0 (0xfffffd800b063100) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 28974 (syz-executor) thread 0xffff800031b9e7e8 (243180) exclusive rrwlock inode r = 0 (0xfffffd806c2e0d80) #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+0xbd 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 ufs_lookup+0x16bd sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #9 namei+0x7ca sys/kern/vfs_lookup.c:250 #10 vn_open+0x15a sys/kern/vfs_vnops.c:140 #11 doopenat+0x35b sys/kern/vfs_syscalls.c:1155 #12 sys_open+0x59 sys/kern/vfs_syscalls.c:1063 #13 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 Process 59049 (syz-executor) thread 0xffff800031b9fca8 (104152) exclusive rwlock vmmaplk r = 0 (0xfffffd800eca9aa8) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3075 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 6949 (syz-executor) thread 0xffff800031b9e2b8 (265742) exclusive rwlock fdlock r = 0 (0xffff80002a2308b0) #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 sys_socket+0x203 sys/kern/uipc_syscalls.c:106 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #4 Xsyscall+0x128 Process 10756 (systqmp) thread 0xffff8000ffffe530 (403115) shared rwlock systqmp r = 0 (0xffffffff83867858) #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 11073 12117K 12355K 166960K 12705 0 pcb 18 12K 12K 166960K 132 0 rtable 223 8K 8K 166960K 462 0 pf 35 17K 21K 166960K 94 0 ifaddr 40 7K 7K 166960K 79 0 ifgroup 53 2K 2K 166960K 109 0 sysctl 3 1K 9K 166960K 7 0 counters 70 37K 37K 166960K 132 0 ioctlops 0 0K 4K 166960K 1545 0 iov 0 0K 24K 166960K 24 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 82K 82K 166960K 1793 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 36 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 605 0 sigio 0 0K 0K 166960K 17 0 proc 72 115K 164K 166960K 677 0 subproc 72 4K 4K 166960K 91 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 48 0 in_multi 91 6K 7K 166960K 131 0 ether_multi 1 0K 0K 166960K 4 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 468 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 246 167K 194K 166960K 7486 0 UVM aobj 10 4K 4K 166960K 10 0 pinsyscall 43 86K 104K 166960K 1832 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 41 0 NDP 12 0K 2K 166960K 54 0 temp 51 9077K 9169K 166960K 29938 0 kqueue 14 22K 28K 166960K 91 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 120 105 0 102 2 0 2 2 0 8 1 rtentry 176 139 0 42 6 0 6 6 0 8 0 unpcb 144 297 0 275 2 1 1 2 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpcb 736 148 0 144 1 0 1 1 0 8 0 arp 136 23 0 8 1 0 1 1 0 8 0 inpcb 328 503 0 493 2 0 2 2 0 8 1 nd6 152 31 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 27 0 26 3 2 1 1 0 8 0 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 6 0 2 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 48 0 14 1 0 1 1 0 8 0 pfstkey 128 48 0 14 2 0 2 2 0 8 0 pfstate 448 48 0 14 5 0 5 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 552 0 138 29 3 26 29 0 8 0 art_table 40 553 0 138 5 0 5 5 0 8 0 art_node 32 139 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 2 1 1 1 0 8 0 semapl 112 33 0 23 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2530 0 1060 93 0 93 93 0 8 0 ffsino 296 2530 0 1060 114 0 114 114 0 8 0 nchpl 144 3349 0 1637 64 0 64 64 0 8 0 rtmask 32 6 0 6 2 2 0 1 0 8 0 vnodes 216 2792 0 0 156 0 156 156 0 8 0 namei 1024 10815 0 10815 2 1 1 1 0 8 1 percpumem 16 81 0 31 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 848 1 0 0 1 0 1 1 0 8 0 kstatmem 264 70 0 44 4 2 2 3 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 28232 0 28232 9 8 1 8 1 8 1 plimitpl 152 340 0 320 1 0 1 1 0 8 0 sigapl 424 926 0 873 7 0 7 7 0 8 0 knotepl 120 377 0 0 12 0 12 12 0 8 0 kqueuepl 224 171 0 159 4 3 1 3 0 8 0 pipepl 344 176 0 148 4 1 3 4 0 8 0 fdescpl 528 905 0 873 3 0 3 3 0 8 0 filepl 160 4446 0 4215 13 1 12 12 0 8 1 lockfpl 104 181 0 179 1 0 1 1 0 8 0 lockfspl 48 75 0 73 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 719 0 705 1 0 1 1 0 8 0 zombiepl 144 1001 0 1000 1 0 1 1 0 8 0 processpl 1232 926 0 873 5 0 5 5 0 8 0 procpl 664 1746 0 1681 7 1 6 7 0 8 0 sosppl 176 6 0 6 1 1 0 1 0 8 0 sockpl 752 918 0 882 9 2 7 7 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 40 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 251 0 0 16 0 16 16 0 8 0 bufpl 280 12061 0 5932 439 0 439 439 0 8 0 anonpl 32 13640 0 0 111 1 110 111 0 246 0 amapchunkpl 152 23519 0 23003 31 6 25 29 0 158 4 amappl16 200 4616 0 4585 32 17 15 31 0 8 8 amappl15 192 47 0 47 1 1 0 1 0 8 0 amappl14 184 455 0 454 1 0 1 1 0 8 0 amappl13 176 134 0 122 1 0 1 1 0 8 0 amappl12 168 1167 0 1136 2 0 2 2 0 8 0 amappl11 160 10 0 10 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 111 0 109 1 0 1 1 0 8 0 amappl7 128 157 0 144 1 0 1 1 0 8 0 amappl6 120 183 0 182 1 0 1 1 0 8 0 amappl5 112 101 0 90 1 0 1 1 0 8 0 amappl4 104 326 0 306 1 0 1 1 0 8 0 amappl3 96 4647 0 4526 4 0 4 4 0 8 0 amappl2 88 589 0 528 2 0 2 2 0 8 0 amappl1 80 12840 0 12227 18 1 17 18 0 8 0 amappl 88 6619 0 6446 5 0 5 5 0 92 0 uvmvnodes 80 125 0 0 3 0 3 3 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 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 905 0 873 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 905 0 873 1 0 1 1 0 8 0 vmmpekpl 168 9449 0 9398 3 0 3 3 0 8 0 vmmpepl 168 68309 0 66326 116 4 112 116 0 357 15 vmsppl 488 904 0 873 5 0 5 5 0 8 1 rwobjpl 80 23100 0 22019 35 1 34 35 0 8 2 pdppl 4096 1819 0 1747 113 39 74 83 0 8 2 pvpl 32 20239 0 0 165 1 164 164 0 265 0 pmappl 256 905 0 873 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 296 0 48 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8392cff0) 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(ffffffff83997780) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83997780) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83997780,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 pool_get(ffffffff839671c8,9) at pool_get+0x27e sys/kern/subr_pool.c:595 soalloc(ffffffff836223d0,1) at soalloc+0x69 sys/kern/uipc_socket.c:149 socreate(1,ffff80002ef9c238,1,0) at socreate+0xee sys/kern/uipc_socket.c:206 fifo_open(ffff80002ef9c298) at fifo_open+0x162 sys/miscfs/fifofs/fifo_vnops.c:162 VOP_OPEN(fffffd805cc0b648,3,fffffd80097fd888,ffff800031b9e7e8) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 vn_open(ffff80002ef9c4d8,3,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177 doopenat(ffff800031b9e7e8,ffffff9c,2000000000c0,2,0,0,20c62dde06e8a6a0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155 sys_open(ffff800031b9e7e8,ffff80002ef9c790,ffff80002ef9c6e0) at sys_open+0x59 sys/kern/vfs_syscalls.c:1063 syscall(ffff80002ef9c790) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ef9c790) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80002ef9c810, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8392cff0) 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(ffffffff83997780) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83997780) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83997780,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 pool_get(ffffffff839671c8,9) at pool_get+0x27e sys/kern/subr_pool.c:595 soalloc(ffffffff836223d0,1) at soalloc+0x69 sys/kern/uipc_socket.c:149 socreate(1,ffff80002ef9c238,1,0) at socreate+0xee sys/kern/uipc_socket.c:206 fifo_open(ffff80002ef9c298) at fifo_open+0x162 sys/miscfs/fifofs/fifo_vnops.c:162 VOP_OPEN(fffffd805cc0b648,3,fffffd80097fd888,ffff800031b9e7e8) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 vn_open(ffff80002ef9c4d8,3,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177 doopenat(ffff800031b9e7e8,ffffff9c,2000000000c0,2,0,0,20c62dde06e8a6a0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155 sys_open(ffff800031b9e7e8,ffff80002ef9c790,ffff80002ef9c6e0) at sys_open+0x59 sys/kern/vfs_syscalls.c:1063 syscall(ffff80002ef9c790) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ef9c790) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x160c20b6b30, count: -15 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a314b50) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ed9a130,81,fffffd80097fd888,ffff8000fffe7cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d868658,ffff8000fffe7cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806d868658,ffff8000fffe7cb8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe7cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe7cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe7cb8,ffff80002a314ec0,ffff80002a314e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a314ec0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a314ec0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593331954e0, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001676000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe7cb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a314b50) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ed9a130,81,fffffd80097fd888,ffff8000fffe7cb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d868658,ffff8000fffe7cb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d868658,ffff8000fffe7cb8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806d868658,ffff8000fffe7cb8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe7cb8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe7cb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe7cb8,ffff80002a314ec0,ffff80002a314e10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a314ec0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a314ec0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593331954e0, count: -12