uvm_fault(0xfffffd806a47eb90, 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 422943 20587 0 0x1000 0x4080000 0 syz-executor dt_ioctl_record_stop(ffff8000014a0000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f801180) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80673c8e80,1,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a5beb80,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a5beb80,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff80002f8014f0,ffff80002f801440) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f8014f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f8014f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714815a22040, 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(0xfffffd806a47eb90, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff8000014a0000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f801180) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80673c8e80,1,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a5beb80,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a5beb80,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff80002f8014f0,ffff80002f801440) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f8014f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f8014f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714815a22040, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002f8010b0 rbx 0x1 rdx 0 rcx 0xffff80002a2b9770 rax 0xffffffff837782b0 dt_prov_syscall r8 0 r9 0 r10 0xcc2cebfffdceb957 r11 0xb4b3e18a7b28da0b r12 0 r13 0 r14 0 r15 0xffff80000149ad00 rip 0xffffffff82fd0f28 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002f801080 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=337433 pid=53195 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2b9770 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4c2a98,0xffff80003c4c22e0 process=0xffff80002a2c1828 user=0xffff80002f7fc000, vmspace=0xfffffd806a47eb90 estcpu=35, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20587 209015 35500 0 3 0x3000 suspend syz-executor 20587 422943 35500 0 7 0x4081000 syz-executor 20587 50957 35500 0 2 0x4081080 syz-executor 97715 207416 91645 0 3 0x80 nanoslp syz-executor 97715 202237 91645 0 3 0x4000080 ttyretype syz-executor 41765 219732 48596 0 3 0x80 nanoslp syz-executor 41765 138402 48596 0 3 0x4000080 fsleep syz-executor 41765 313986 48596 0 3 0x4000080 kqsel syz-executor 59909 124719 13147 60929 3 0x90 nanoslp syz-executor 59909 203627 13147 60929 3 0x4000090 msgwait syz-executor 59909 92690 13147 60929 3 0x4000090 fsleep syz-executor 7641 184873 66890 0 3 0x80 nanoslp syz-executor 7641 487544 66890 0 3 0x4000080 kqsel syz-executor 35500 328120 26754 0 3 0x82 nanoslp syz-executor 71617 269348 0 0 3 0x14280 nfsidl nfsio 67503 444042 0 0 3 0x14280 nfsidl nfsio 84142 133845 0 0 3 0x14280 nfsidl nfsio 71151 385350 0 0 3 0x14280 nfsidl nfsio 35760 283623 0 0 3 0x14280 nfsidl nfsio 1095 183032 0 0 3 0x14280 nfsidl nfsio 70282 197275 0 0 3 0x14280 nfsidl nfsio 55024 181099 0 0 3 0x14280 nfsidl nfsio 62152 98566 0 0 3 0x14280 nfsidl nfsio 33903 56781 0 0 3 0x14280 nfsidl nfsio 47787 308379 0 0 3 0x14280 nfsidl nfsio 55075 214582 0 0 3 0x14280 nfsidl nfsio 97042 140942 0 0 3 0x14280 nfsidl nfsio 62926 199827 0 0 3 0x14280 nfsidl nfsio 24389 422821 0 0 3 0x14280 nfsidl nfsio 89347 195052 0 0 3 0x14280 nfsidl nfsio 65120 201044 0 0 3 0x14280 nfsidl nfsio 34677 330593 0 0 3 0x14280 nfsidl nfsio 90972 515517 0 0 3 0x14280 nfsidl nfsio 99579 33670 0 0 3 0x14280 nfsidl nfsio 73431 304646 0 0 3 0x14200 bored sosplice 48596 512779 26754 0 3 0x82 nanoslp syz-executor 62721 308668 26754 0 3 0x82 nanoslp syz-executor 39085 22846 26754 0 3 0x82 wait syz-executor 66890 77922 26754 0 3 0x82 nanoslp syz-executor 91645 285315 26754 0 3 0x82 nanoslp syz-executor 42928 158183 26754 0 3 0x2 biowait syz-executor 13147 470818 26754 0 3 0x82 nanoslp syz-executor 26754 472041 74548 0 3 0x82 kqread syz-executor 74548 325545 48585 0 3 0x10008a sigsusp ksh 48585 472901 12945 0 3 0x98 kqread sshd-session 12945 479234 10783 0 3 0x92 kqread sshd-session 92480 221560 1 0 3 0x100083 ttyin getty 10783 73654 1 0 3 0x88 kqread sshd 77276 344899 76545 74 3 0x1100092 bpf pflogd 76545 444915 1 0 3 0x80 sbwait pflogd 14360 246275 16418 73 3 0x1100090 kqread syslogd 16418 168517 1 0 3 0x100082 sbwait syslogd 57045 449898 1 0 3 0x100080 kqread resolvd 62941 311047 96790 77 3 0x100092 kqread dhcpleased 12733 109060 96790 77 3 0x100092 kqread dhcpleased 96790 331921 1 0 3 0x80 kqread dhcpleased 48883 202236 0 0 3 0x14200 bored smr 34821 198494 0 0 3 0x14200 pgzero zerothread 54686 493918 0 0 3 0x14200 aiodoned aiodoned 28794 77561 0 0 3 0x14200 syncer update 79990 2018 0 0 3 0x14200 cleaner cleaner 37771 316472 0 0 3 0x14200 reaper reaper 41459 76299 0 0 3 0x14200 pgdaemon pagedaemon 81609 441509 0 0 3 0x14200 bored viomb 9594 355266 0 0 3 0x40014200 acpi0 acpi0 77873 193704 0 0 3 0x40014200 idle1 54554 224565 0 0 3 0x14200 bored softnet7 52999 463349 0 0 3 0x14200 bored softnet6 76640 295411 0 0 3 0x14200 bored softnet5 64264 209341 0 0 3 0x14200 bored softnet4 10454 242581 0 0 3 0x14200 bored softnet3 96318 304553 0 0 3 0x14200 bored softnet2 3154 13655 0 0 3 0x14200 bored softnet1 58703 186352 0 0 3 0x14200 bored softnet0 96663 220090 0 0 3 0x14200 bored systqmp 794 407889 0 0 3 0x14200 bored systq 84594 273858 0 0 3 0x14200 tmoslp softclockmp 5023 299117 0 0 3 0x40014200 tmoslp softclock 86478 353467 0 0 3 0x40014200 idle0 1 215972 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 42928 (syz-executor) thread 0xffff80002a2b9a08 (158183) exclusive rrwlock inode r = 0 (0xfffffd806a3b4d98) #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 (0xfffffd8079c49448) #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 10218 11074K 11240K 166960K 11761 0 pcb 17 18K 21K 166960K 218 0 rtable 198 7K 8K 166960K 431 0 pf 34 17K 22K 166960K 107 0 ifaddr 39 7K 8K 166960K 81 0 ifgroup 51 2K 2K 166960K 124 0 sysctl 3 1K 9K 166960K 16 0 counters 66 36K 37K 166960K 138 0 ioctlops 0 0K 4K 166960K 1567 0 iov 0 0K 24K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1404 88K 88K 166960K 1986 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 14 5K 5K 166960K 27 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 707 0 sigio 0 0K 0K 166960K 8 0 proc 73 115K 164K 166960K 611 0 subproc 72 4K 4K 166960K 83 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 64 0 in_multi 88 6K 7K 166960K 136 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 1 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 510 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 250 161K 174K 166960K 7981 0 UVM aobj 50 2K 2K 166960K 52 0 pinsyscall 42 84K 100K 166960K 1871 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 31 0 NDP 13 0K 2K 166960K 54 0 temp 67 8653K 8718K 166960K 30096 0 kqueue 14 22K 29K 166960K 133 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 120 143 0 140 3 0 3 3 0 8 2 rtentry 176 123 0 42 5 0 5 5 0 8 0 unpcb 144 440 0 421 5 3 2 4 0 8 1 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpcb 736 141 0 136 2 1 1 2 0 8 0 arp 128 14 0 3 1 0 1 1 0 8 0 inpcb 328 693 0 616 17 10 7 10 0 8 0 nd6 144 21 0 5 1 0 1 1 0 8 0 pkpcb 40 68 0 68 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 26 0 26 1 0 1 1 0 8 1 pppxif 1504 3 0 3 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 3 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 0 1 1 0 8 1 pfanchor 1288 2 0 2 1 0 1 1 0 8 1 pfstitem 24 44 0 17 1 0 1 1 0 8 0 pfstkey 128 48 0 21 1 0 1 1 0 8 0 pfstate 384 47 0 20 3 0 3 3 0 8 0 pfrule 1344 26 0 21 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 567 0 174 30 4 26 30 0 8 1 art_table 40 569 0 174 5 0 5 5 0 8 0 art_node 32 121 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 22 0 10 1 0 1 1 0 8 0 shmpl 112 49 0 2 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2777 0 1267 96 0 96 96 0 8 0 ffsino 296 2777 0 1267 118 0 118 118 0 8 0 nchpl 144 3775 0 2080 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 1 0 1 0 8 0 uvmvnodes 80 3143 0 0 65 0 65 65 0 8 0 vnodes 216 3143 0 0 175 0 175 175 0 8 0 namei 1024 13130 0 13129 2 1 1 2 0 8 0 percpumem 16 84 0 36 1 0 1 1 0 8 0 kstatmem 264 72 0 48 3 1 2 3 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 14729 0 14728 13 9 4 8 1 8 3 plimitpl 152 183 0 165 1 0 1 1 0 8 0 sigapl 424 1046 0 972 9 0 9 9 0 8 0 knotepl 120 722 0 0 22 0 22 22 0 8 0 kqueuepl 224 206 0 194 2 1 1 2 0 8 0 pipepl 344 159 0 131 3 0 3 3 0 8 0 fdescpl 528 1001 0 970 3 0 3 3 0 8 0 filepl 160 6096 0 5801 25 10 15 18 0 8 2 lockfpl 104 205 0 203 1 0 1 1 0 8 0 lockfspl 48 86 0 84 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 1230 0 1215 1 0 1 1 0 8 0 zombiepl 144 974 0 972 1 0 1 1 0 8 0 processpl 1232 1046 0 972 6 0 6 6 0 8 0 procpl 664 1954 0 1872 8 0 8 8 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 752 1356 0 1257 28 17 11 20 0 8 1 mcl64k 65536 4 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 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 47 0 0 6 0 6 6 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1207 0 0 75 0 75 75 0 8 0 bufpl 280 5429 0 123 379 0 379 379 0 8 0 anonpl 32 7600 0 0 62 0 62 62 0 246 0 amapchunkpl 152 26625 0 26092 38 11 27 35 0 158 4 amappl16 200 3178 0 3145 25 13 12 15 0 8 8 amappl15 192 9 0 9 3 2 1 1 0 8 1 amappl14 184 125 0 113 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1677 0 1646 3 1 2 2 0 8 0 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 137 0 134 1 0 1 1 0 8 0 amappl7 128 122 0 110 1 0 1 1 0 8 0 amappl6 120 193 0 189 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 327 0 306 1 0 1 1 0 8 0 amappl3 96 4542 0 4439 4 1 3 3 0 8 0 amappl2 88 1277 0 1198 2 0 2 2 0 8 0 amappl1 80 11905 0 11292 15 0 15 15 0 8 0 amappl 88 7151 0 6974 6 1 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 128 254 0 254 2 1 1 1 0 8 1 dma64 64 7 0 7 2 2 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 51 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1001 0 970 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1001 0 970 1 0 1 1 0 8 0 vmmpekpl 168 9621 0 9576 3 0 3 3 0 8 0 vmmpepl 168 69876 0 67858 105 6 99 100 0 357 4 vmsppl 488 1000 0 970 5 0 5 5 0 8 0 rwobjpl 80 23902 0 19749 87 0 87 87 0 8 0 pdppl 4096 2010 0 1940 110 36 74 82 0 8 4 pvpl 32 16085 0 0 130 0 130 130 0 265 0 pmappl 256 1000 0 970 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 353 0 47 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378eff0) 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(ffffffff839bfa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 sys/kern/kern_lock.c:165 proc_suspend_check_locked(ffff800033408a80,0) at proc_suspend_check_locked+0x2e3 sys/kern/kern_sig.c:2259 userret(ffff800033408a80) at userret+0x8c proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800033408a80) at userret+0x8c sys/kern/kern_sig.c:2194 syscall(ffff80003c47ef50) at syscall+0x9cd mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80003c47ef50) at syscall+0x9cd sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd6440054f60, count: 7 ddb{0}> trace x86_ipi_db(ffffffff8378eff0) 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(ffffffff839bfa58) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bfa58) at __mp_lock+0x192 sys/kern/kern_lock.c:165 proc_suspend_check_locked(ffff800033408a80,0) at proc_suspend_check_locked+0x2e3 sys/kern/kern_sig.c:2259 userret(ffff800033408a80) at userret+0x8c proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800033408a80) at userret+0x8c sys/kern/kern_sig.c:2194 syscall(ffff80003c47ef50) at syscall+0x9cd mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80003c47ef50) at syscall+0x9cd sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd6440054f60, count: -8 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff8000014a0000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f801180) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80673c8e80,1,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a5beb80,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a5beb80,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff80002f8014f0,ffff80002f801440) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f8014f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f8014f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714815a22040, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff8000014a0000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f801180) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80673c8e80,1,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a5beb80,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a5beb80,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a5beb80,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff80002f8014f0,ffff80002f801440) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f8014f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f8014f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714815a22040, count: -12