uvm_fault(0xfffffd806654b028, 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 179378 93102 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff800001499000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4b45c0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e9285e8,81,fffffd80097fb750,ffff8000fffdaf90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80637ef260,ffff8000fffdaf90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80637ef260,ffff8000fffdaf90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000fffdaf90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000fffdaf90,0,0,1) at exit1+0x5a0 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffdaf90,ffff80003c4b4930,ffff80003c4b4880) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b4930) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b4930) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0b348e1650, 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(0xfffffd806654b028, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001499000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4b45c0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e9285e8,81,fffffd80097fb750,ffff8000fffdaf90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80637ef260,ffff8000fffdaf90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80637ef260,ffff8000fffdaf90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000fffdaf90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000fffdaf90,0,0,1) at exit1+0x5a0 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffdaf90,ffff80003c4b4930,ffff80003c4b4880) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b4930) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b4930) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0b348e1650, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4b44f0 rbx 0xffffffff81616370 dtclose rdx 0 rcx 0xffff8000fffdaf90 rax 0xffffffff837cd060 dt_prov_static r8 0x120 r9 0 r10 0x6a6399f6f18e6b57 r11 0x1a50ae8ee0c0281 r12 0xffffffff837cd800 dt_static_uvm_malloc r13 0 r14 0 r15 0xffff8000014f2600 rip 0xffffffff81616750 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c4b44c0 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{1}> show proc PROC (syz-executor) tid=91389 pid=23520 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffdaf90 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffdb220,0xffff8000ffffd728 process=0xffff8000fffdd860 user=0xffff80003c4af000, vmspace=0xfffffd806654b028 estcpu=32, cpticks=9, pctcpu=0.10, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46617 285265 88789 0 2 0 syz-executor 46617 354140 88789 0 3 0x4000080 fsleep syz-executor 46617 170103 88789 0 3 0x4000080 fsleep syz-executor 93102 179378 63062 0 7 0 syz-executor 93102 287555 63062 0 3 0x4000080 fsleep syz-executor 93102 501092 63062 0 3 0x4000080 fsleep syz-executor 93102 291047 63062 0 3 0x4000080 fsleep syz-executor 90860 431195 25483 -1 3 0x90 nanoslp syz-executor 90860 510009 25483 -1 3 0x4000090 sbwait syz-executor 90860 141124 25483 -1 3 0x4000090 fsleep syz-executor 90860 493923 25483 -1 3 0x4000090 fsleep syz-executor 41121 107298 97385 0 4 0x82004 syz-executor 41121 77311 97385 0 2 0x4002004 syz-executor 41121 246729 97385 0 4 0x4082004 syz-executor 89055 386336 63821 0 2 0 syz-executor 89055 261988 63821 0 3 0x4000080 fsleep syz-executor 89055 170617 63821 0 3 0x4000080 fsleep syz-executor 59833 101094 38388 0 3 0x80 nanoslp syz-executor 59833 201085 38388 0 2 0x4000000 syz-executor 59833 511725 38388 0 3 0x4000080 fsleep syz-executor 59833 162039 38388 0 3 0x4000080 fsleep syz-executor 75953 300145 0 0 3 0x14280 nfsidl nfsio 33340 448182 0 0 3 0x14280 nfsidl nfsio 33815 59195 0 0 3 0x14280 nfsidl nfsio 52291 382927 0 0 3 0x14280 nfsidl nfsio 36244 373969 0 0 3 0x14280 nfsidl nfsio 6243 39638 0 0 3 0x14280 nfsidl nfsio 53908 518184 0 0 3 0x14280 nfsidl nfsio 39798 153844 0 0 3 0x14280 nfsidl nfsio 80943 104672 0 0 3 0x14280 nfsidl nfsio 72240 201277 0 0 3 0x14280 nfsidl nfsio 70595 232362 0 0 3 0x14280 nfsidl nfsio 78591 161879 0 0 3 0x14280 nfsidl nfsio 74361 307709 0 0 3 0x14280 nfsidl nfsio 50547 410965 0 0 3 0x14280 nfsidl nfsio 52263 522513 0 0 3 0x14280 nfsidl nfsio 22205 245182 0 0 3 0x14280 nfsidl nfsio 66818 247248 0 0 3 0x14280 nfsidl nfsio 40125 482898 0 0 3 0x14280 nfsidl nfsio 73169 259550 0 0 3 0x14280 nfsidl nfsio 83255 281677 0 0 3 0x14280 nfsidl nfsio 52181 171741 0 0 3 0x14200 bored sosplice 3344 201346 31381 0 3 0x82 nanoslp syz-executor 97385 413202 31381 0 3 0x82 nanoslp syz-executor 38388 396405 31381 0 3 0x82 nanoslp syz-executor 34848 335321 31381 0 3 0x82 nanoslp syz-executor 88789 485458 31381 0 3 0x82 nanoslp syz-executor 25483 196726 31381 0 3 0x82 nanoslp syz-executor 63062 175388 31381 0 2 0x3 syz-executor 63821 424849 31381 0 3 0x82 nanoslp syz-executor 31381 494393 60757 0 3 0x82 kqread syz-executor 60757 422188 63981 0 3 0x10008a sigsusp ksh 63981 267175 29354 0 3 0x98 kqread sshd-session 29354 482145 11562 0 3 0x92 kqread sshd-session 71273 66008 1 0 3 0x100083 ttyin getty 11562 86881 1 0 3 0x88 kqread sshd 23820 239708 36154 74 3 0x1100092 bpf pflogd 36154 272981 1 0 3 0x80 sbwait pflogd 69588 36003 8507 73 3 0x1100090 kqread syslogd 8507 339953 1 0 3 0x100082 sbwait syslogd 40882 327995 1 0 3 0x100080 kqread resolvd 45109 462389 52234 77 3 0x100092 kqread dhcpleased 83194 18514 52234 77 3 0x100092 kqread dhcpleased 52234 431691 1 0 3 0x80 kqread dhcpleased 52680 214235 0 0 3 0x14200 bored smr 16541 21631 0 0 2 0x14200 zerothread 88057 519339 0 0 3 0x14200 aiodoned aiodoned 23713 227240 0 0 3 0x14200 syncer update 7578 444693 0 0 3 0x14200 cleaner cleaner 15932 193200 0 0 2 0x14200 reaper 73645 80538 0 0 3 0x14200 pgdaemon pagedaemon 80615 345439 0 0 3 0x14200 bored viomb 78215 320886 0 0 3 0x40014200 acpi0 acpi0 36886 465017 0 0 3 0x40014200 idle1 92138 160897 0 0 3 0x14200 bored softnet3 57707 24115 0 0 3 0x14200 bored softnet2 14804 353618 0 0 3 0x14200 bored softnet1 6198 272721 0 0 3 0x14200 bored softnet0 65303 187183 0 0 2 0x14200 systqmp 74161 233407 0 0 3 0x14200 bored systq 35660 262921 0 0 3 0x14200 tmoslp softclockmp 90493 157555 0 0 3 0x40014200 tmoslp softclock 95605 27377 0 0 3 0x40014200 idle0 1 443362 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 93102 (syz-executor) thread 0xffff8000fffe94a8 (179378) exclusive rwlock uobjlk r = 0 (0xfffffd806ceb14f0) #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 uvm_fault+0x1e9 sys/uvm/uvm_fault.c:699 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806654b308) #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_read+0x36e sys/kern/kern_rwlock.c:398 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 Process 59833 (syz-executor) thread 0xffff8000fffe8f88 (201085) exclusive rrwlock inode r = 0 (0xfffffd8066aaa640) #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 vn_open+0x13f sys/kern/vfs_vnops.c:140 #8 doopenat+0x32e sys/kern/vfs_syscalls.c:1137 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #10 Xsyscall+0x128 Process 15932 (reaper) thread 0xffff8000ffffc008 (193200) exclusive rwlock kmmaplk r = 0 (0xffffffff838d64a0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5148 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:285 #6 reaper+0x1cb sys/kern/kern_exit.c:480 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10214 11115K 11349K 166960K 11685 0 pcb 17 13K 14K 166960K 107 0 rtable 219 7K 7K 166960K 389 0 pf 34 17K 18K 166960K 67 0 ifaddr 43 7K 8K 166960K 56 0 ifgroup 55 2K 2K 166960K 76 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1515 0 iov 0 0K 24K 166960K 18 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1395 88K 88K 166960K 1635 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 44 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 435 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 128K 166960K 548 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 3 0K 0K 166960K 50 0 in_multi 99 7K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 4 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 381 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 257 176K 189K 166960K 5615 0 UVM aobj 9 2K 2K 166960K 10 0 pinsyscall 43 86K 103K 166960K 1523 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 22 0 NDP 12 0K 2K 166960K 35 0 temp 47 8680K 8746K 166960K 17784 0 kqueue 16 26K 26K 166960K 78 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 61 0 57 1 0 1 1 0 8 0 rtentry 176 117 0 17 6 1 5 6 0 8 0 unpcb 144 187 0 166 2 1 1 2 0 8 0 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 160 0 155 9 7 2 8 0 8 1 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 410 0 397 8 6 2 8 0 8 0 nd6 144 24 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 5 0 5 2 1 1 1 0 8 1 pppxif 1504 2 0 2 2 1 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 3 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 39 0 1 1 0 1 1 0 8 0 pfstkey 128 39 0 1 2 0 2 2 0 8 0 pfstate 384 39 0 1 4 0 4 4 0 8 0 pfrule 1344 22 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 529 0 55 31 1 30 30 0 8 0 art_table 32 530 0 55 4 0 4 4 0 8 0 art_node 16 115 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semapl 112 42 0 34 1 0 1 1 0 8 0 shmpl 112 7 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2084 0 576 95 0 95 95 0 8 0 ffsino 288 2085 0 576 109 0 109 109 0 8 0 nchpl 144 2709 0 1012 63 0 63 63 0 8 0 uvmvnodes 80 2361 0 0 49 0 49 49 0 8 0 vnodes 216 2361 0 0 132 0 132 132 0 8 0 namei 1024 8833 0 8832 4 3 1 2 0 8 0 percpumem 16 57 0 8 1 0 1 1 0 8 0 kstatmem 264 38 0 12 3 1 2 3 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 8318 0 8318 5 4 1 4 1 8 1 plimitpl 152 71 0 52 1 0 1 1 0 8 0 sigapl 424 756 0 685 9 0 9 9 0 8 0 knotepl 120 537 0 0 17 0 17 17 0 8 0 kqueuepl 224 177 0 162 5 0 5 5 0 8 4 pipepl 336 258 0 231 8 5 3 8 0 8 0 fdescpl 520 717 0 685 3 0 3 3 0 8 0 filepl 160 3909 0 3669 22 9 13 20 0 8 2 lockfpl 104 154 0 151 1 0 1 1 0 8 0 lockfspl 48 53 0 50 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 448 0 433 1 0 1 1 0 8 0 zombiepl 144 769 0 767 1 0 1 1 0 8 0 processpl 1240 756 0 685 6 0 6 6 0 8 0 procpl 656 1305 0 1217 8 0 8 8 0 8 0 sosppl 168 3 0 3 1 1 0 1 0 8 0 sockpl 728 673 0 635 10 6 4 10 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 198 0 0 13 0 13 13 0 8 0 bufpl 280 3974 0 124 275 0 275 275 0 8 0 anonpl 32 8429 0 0 68 0 68 68 0 246 0 amapchunkpl 152 17775 0 17238 31 8 23 28 0 158 2 amappl16 200 2793 0 2762 31 16 15 18 0 8 11 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 117 0 104 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1358 0 1326 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 104 0 92 1 0 1 1 0 8 0 amappl6 120 228 0 225 1 0 1 1 0 8 0 amappl5 112 124 0 114 1 0 1 1 0 8 0 amappl4 104 318 0 297 1 0 1 1 0 8 0 amappl3 96 3325 0 3204 4 0 4 4 0 8 1 amappl2 88 639 0 577 2 0 2 2 0 8 0 amappl1 80 9725 0 9106 16 1 15 15 0 8 1 amappl 88 4879 0 4696 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 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 718 0 686 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 718 0 686 1 0 1 1 0 8 0 vmmpekpl 168 8187 0 8150 2 0 2 2 0 8 0 vmmpepl 168 51865 0 49805 107 7 100 100 0 357 6 vmsppl 480 717 0 686 6 1 5 5 0 8 1 rwobjpl 72 19097 0 15769 67 3 64 64 0 8 0 pdppl 4096 1443 0 1372 97 26 71 83 0 8 0 pvpl 32 14743 0 0 119 0 119 119 0 265 0 pmappl 256 717 0 686 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 398 0 45 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838aeff0) 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(ffffffff839f1a80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 sys/kern/kern_lock.c:159 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 sys/kern/kern_lock.c:159 uvm_fault(fffffd806654b208,a3c9438000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700 upageflttrap(ffff80003c4c0690,a3c9438000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4c0690) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x791861a569e0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff838aeff0) 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(ffffffff839f1a80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 sys/kern/kern_lock.c:159 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff839f1a80) at __mp_lock+0x192 sys/kern/kern_lock.c:159 uvm_fault(fffffd806654b208,a3c9438000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700 upageflttrap(ffff80003c4c0690,a3c9438000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4c0690) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x791861a569e0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 dt_ioctl_record_stop(ffff800001499000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4b45c0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e9285e8,81,fffffd80097fb750,ffff8000fffdaf90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80637ef260,ffff8000fffdaf90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80637ef260,ffff8000fffdaf90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000fffdaf90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000fffdaf90,0,0,1) at exit1+0x5a0 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffdaf90,ffff80003c4b4930,ffff80003c4b4880) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b4930) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b4930) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0b348e1650, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001499000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffdaf90) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4b45c0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e9285e8,81,fffffd80097fb750,ffff8000fffdaf90) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80637ef260,ffff8000fffdaf90) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80637ef260,ffff8000fffdaf90) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80637ef260,ffff8000fffdaf90) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000fffdaf90) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000fffdaf90,0,0,1) at exit1+0x5a0 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffdaf90,ffff80003c4b4930,ffff80003c4b4880) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b4930) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b4930) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0b348e1650, count: -12