uvm_fault(0xfffffd80783405e8, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 59708 21795 0 0x14000 0x200 0 reaper witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000160b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001748000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41e760) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064d073a0,1,fffffd80097fd1a0,ffff8000fffe9780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d3552a8,ffff8000fffe9780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d3552a8,ffff8000fffe9780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe9780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe9780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe9780,ffff80003c41ead0,ffff80003c41ea20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41ead0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41ead0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 end trace frame: 0xffff80003c41eb50, count: 0 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(0xfffffd80783405e8, 0x48, 0, 1) -> e ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000160b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001748000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41e760) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064d073a0,1,fffffd80097fd1a0,ffff8000fffe9780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d3552a8,ffff8000fffe9780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d3552a8,ffff8000fffe9780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe9780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe9780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe9780,ffff80003c41ead0,ffff80003c41ea20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41ead0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41ead0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7596d2ebf930, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c41e580 rbx 0 rdx 0 rcx 0xffff8000fffe9780 rax 0xffff8000299ddffe r8 0 r9 0x1 r10 0xa64eb9e09a2c4a3c r11 0xe6d07d0923d5d28a r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff8268a325 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c41e4e0 ss 0 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=383753 pid=5961 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe9780 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe82c0,0xffff8000fffe8d30 process=0xffff8000fffec018 user=0xffff80003c419000, vmspace=0xfffffd80783405e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20107 165435 18699 0 2 0 syz-executor 20107 440107 18699 0 3 0x4000000 biowait syz-executor 20107 200431 18699 0 3 0x4000080 kqread syz-executor 8838 112138 60527 0 2 0 syz-executor 8838 468632 60527 0 2 0x4000000 syz-executor 65157 486603 86006 0 3 0x80 nanoslp syz-executor 65157 327811 86006 0 3 0x4000080 kqread syz-executor 65157 418002 86006 0 3 0x4000080 fsleep syz-executor 79883 62964 16727 0 3 0x80 nanoslp syz-executor 79883 384487 16727 0 3 0x4000080 ttyretype syz-executor 79883 267522 16727 0 3 0x4000080 fsleep syz-executor 50725 467872 89329 0 3 0x3000 suspend syz-executor 50725 98070 89329 0 2 0x4081000 syz-executor 61966 103064 88547 0 3 0x80 nanoslp syz-executor 61966 152638 88547 0 3 0x4000080 kqsel syz-executor 61966 31709 88547 0 3 0x4000080 fsleep syz-executor 89329 44421 19037 0 3 0x82 nanoslp syz-executor 3193 44837 0 0 3 0x14200 acct acct 60527 106949 19037 0 3 0x82 nanoslp syz-executor 88547 313488 19037 0 3 0x82 nanoslp syz-executor 16727 96077 19037 0 3 0x82 nanoslp syz-executor 54552 154639 19037 0 3 0x82 nanoslp syz-executor 86006 385894 19037 0 3 0x82 nanoslp syz-executor 18699 285332 19037 0 3 0x82 nanoslp syz-executor 74849 503895 19037 0 3 0x82 nanoslp syz-executor 19037 76245 17043 0 3 0x82 kqread syz-executor 17043 4732 10240 0 3 0x10008a sigsusp ksh 10240 102341 41079 0 3 0x98 kqread sshd-session 41079 51702 76752 0 3 0x92 kqread sshd-session 93577 44793 1 0 3 0x100083 ttyopn getty 76752 100952 1 0 3 0x88 kqread sshd 58803 191752 44625 74 3 0x1100092 bpf pflogd 44625 468725 1 0 3 0x80 sbwait pflogd 836 336804 9665 73 3 0x1100090 kqread syslogd 9665 87453 1 0 3 0x100082 sbwait syslogd 24356 1126 1 0 3 0x100080 kqread resolvd 13601 423590 97012 77 3 0x100092 kqread dhcpleased 25202 107283 97012 77 3 0x100092 kqread dhcpleased 97012 319769 1 0 3 0x80 kqread dhcpleased 78113 352387 0 0 3 0x14200 bored smr 6326 459866 0 0 3 0x14200 pgzero zerothread 86932 79965 0 0 3 0x14200 aiodoned aiodoned 37015 322753 0 0 3 0x14200 syncer update 24832 497609 0 0 3 0x14200 cleaner cleaner 21795 59708 0 0 7 0x14200 reaper 68986 480009 0 0 3 0x14200 pgdaemon pagedaemon 4755 497936 0 0 3 0x14200 bored viomb 819 513800 0 0 3 0x40014200 acpi0 acpi0 87876 248557 0 0 3 0x40014200 idle1 39658 271761 0 0 3 0x14200 bored softnet1 90527 160810 0 0 3 0x14200 bored softnet0 92124 231979 0 0 3 0x14200 bored systqmp 20139 275940 0 0 3 0x14200 bored systq 15350 145426 0 0 3 0x14200 tmoslp softclockmp 52800 206557 0 0 3 0x40014200 tmoslp softclock 16792 48445 0 0 3 0x40014200 idle0 1 35848 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 20107 (syz-executor) thread 0xffff8000fffe94e8 (440107) exclusive rrwlock inode r = 0 (0xfffffd807741e920) #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 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 50725 (syz-executor) thread 0xffff8000fffe8028 (98070) exclusive rrwlock inode r = 0 (0xfffffd807c200dc8) #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 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 21795 (reaper) thread 0xffff8000ffffdc90 (59708) exclusive rwlock kmmaplk r = 0 (0xffffffff83987280) #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:5165 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:714 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1ca sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11087 12181K 13529K 166960K 13599 0 pcb 18 12K 15K 166960K 172 0 rtable 189 10K 10K 166960K 546 0 pf 33 17K 19K 166960K 101 0 ifaddr 32 5K 8K 166960K 84 0 ifgroup 52 2K 2K 166960K 129 0 sysctl 2 1K 9K 166960K 14 0 counters 70 37K 37K 166960K 218 0 ioctlops 0 0K 4K 166960K 1709 0 iov 0 0K 16K 166960K 93 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1415 89K 89K 166960K 2091 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 27 137K 137K 166960K 201 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 978 0 sigio 0 0K 0K 166960K 47 0 proc 72 115K 164K 166960K 630 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 95 0 in_multi 53 4K 7K 166960K 144 0 ether_multi 1 0K 0K 166960K 10 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 487 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 274 187K 191K 166960K 10904 0 UVM aobj 34 6K 6K 166960K 37 0 pinsyscall 43 86K 105K 166960K 2153 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 65 0 NDP 12 0K 2K 166960K 54 0 temp 57 8674K 8799K 166960K 47502 0 kqueue 18 26K 32K 166960K 184 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 95 0 92 1 0 1 1 0 8 0 rtentry 176 160 0 92 6 0 6 6 0 8 0 unpcb 144 495 0 476 2 0 2 2 0 8 1 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 305 0 298 10 8 2 7 0 8 1 arp 136 25 0 12 1 0 1 1 0 8 0 inpcb 328 852 0 839 11 9 2 7 0 8 0 nd6 152 30 0 17 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1192 65 0 65 2 1 1 1 0 8 1 pppxif 1576 5 0 5 2 2 0 1 0 8 0 pffrag 232 11 0 2 1 0 1 1 0 482 0 pffrnode 88 8 0 0 1 0 1 1 0 8 0 pffrent 40 18 0 9 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 55 0 16 1 0 1 1 0 8 0 pfstkey 128 55 0 16 2 0 2 2 0 8 0 pfstate 448 55 0 16 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 701 0 445 31 9 22 29 0 8 2 art_table 40 706 0 445 5 0 5 5 0 8 0 art_node 32 159 0 99 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 2 1 1 1 0 8 1 semapl 112 163 0 138 1 0 1 1 0 8 0 shmpl 112 32 0 3 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3195 0 1690 96 0 96 96 0 8 0 ffsino 296 3195 0 1690 117 0 117 117 0 8 0 nchpl 144 4611 0 2902 64 0 64 64 0 8 0 rtmask 32 9 0 9 3 2 1 1 0 8 1 vnodes 216 3664 0 0 204 0 204 204 0 8 0 namei 1024 15493 0 15493 4 3 1 2 0 8 1 percpumem 16 124 0 74 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 848 2 0 0 1 0 1 1 0 8 0 kstatmem 264 76 0 48 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 27923 0 27922 11 8 3 8 1 8 2 plimitpl 152 190 0 170 1 0 1 1 0 8 0 sigapl 424 1294 0 1245 7 1 6 7 0 8 0 knotepl 120 531 0 0 16 0 16 16 0 8 0 kqueuepl 224 283 0 270 3 1 2 2 0 8 1 pipepl 344 226 0 197 3 0 3 3 0 8 0 fdescpl 528 1273 0 1241 3 0 3 3 0 8 0 filepl 160 7350 0 7117 22 8 14 17 0 8 4 lockfpl 104 417 0 412 2 1 1 2 0 8 0 lockfspl 48 121 0 116 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 1027 0 1014 1 0 1 1 0 8 0 zombiepl 144 1248 0 1245 1 0 1 1 0 8 0 processpl 1232 1294 0 1245 6 2 4 5 0 8 0 procpl 664 2791 0 2732 6 0 6 6 0 8 0 sosppl 176 7 0 7 1 0 1 1 0 8 1 sockpl 752 1505 0 1470 14 8 6 10 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 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 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 33 0 0 5 0 5 5 0 8 0 mtagpl 96 33 0 0 1 0 1 1 0 8 0 mbufpl 256 194 0 0 12 0 12 12 0 8 0 bufpl 280 11010 0 4874 439 0 439 439 0 8 0 anonpl 32 10582 0 0 86 0 86 86 0 246 0 amapchunkpl 152 35841 0 35020 45 13 32 33 0 158 0 amappl16 200 5158 0 5087 36 20 16 25 0 8 6 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 7 0 7 1 1 0 1 0 8 0 amappl13 176 439 0 438 1 0 1 1 0 8 0 amappl12 168 1652 0 1609 3 0 3 3 0 8 0 amappl11 160 1 0 0 1 0 1 1 0 8 0 amappl10 152 46 0 32 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 50 0 48 1 0 1 1 0 8 0 amappl7 128 84 0 83 1 0 1 1 0 8 0 amappl6 120 331 0 318 1 0 1 1 0 8 0 amappl5 112 83 0 72 1 0 1 1 0 8 0 amappl4 104 445 0 417 1 0 1 1 0 8 0 amappl3 96 6194 0 6084 4 1 3 3 0 8 0 amappl2 88 1431 0 1352 2 0 2 2 0 8 0 amappl1 80 14097 0 13494 17 2 15 15 0 8 1 amappl 88 10005 0 9814 5 0 5 5 0 92 0 uvmvnodes 80 130 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 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 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 36 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1273 0 1241 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1273 0 1241 1 0 1 1 0 8 0 vmmpekpl 168 11987 0 11943 3 0 3 3 0 8 0 vmmpepl 168 89222 0 87160 115 11 104 106 0 357 13 vmsppl 488 1272 0 1241 7 2 5 5 0 8 0 rwobjpl 80 26995 0 25830 36 5 31 32 0 8 1 pdppl 4096 2557 0 2484 110 37 73 85 0 8 0 pvpl 32 19416 0 0 158 1 157 158 0 265 0 pmappl 256 1274 0 1241 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 311 0 62 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83878ff0) 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(ffffffff83970900) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83970900) at __mp_lock+0x19e sys/kern/kern_lock.c:173 intr_handler(ffff80002a234c90,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f msleep_nsec(ffffffff83838248,ffffffff83838210,0,ffff80002a234d40,282) at msleep_nsec+0x15 sys/kern/kern_synch.c:177 reaper(ffff8000ffffdc90) at reaper+0x15b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83878ff0) 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(ffffffff83970900) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83970900) at __mp_lock+0x19e sys/kern/kern_lock.c:173 intr_handler(ffff80002a234c90,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f msleep_nsec(ffffffff83838248,ffffffff83838210,0,ffff80002a234d40,282) at msleep_nsec+0x15 sys/kern/kern_synch.c:177 reaper(ffff8000ffffdc90) at reaper+0x15b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000160b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001748000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41e760) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064d073a0,1,fffffd80097fd1a0,ffff8000fffe9780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d3552a8,ffff8000fffe9780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d3552a8,ffff8000fffe9780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe9780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe9780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe9780,ffff80003c41ead0,ffff80003c41ea20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41ead0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41ead0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 end trace frame: 0xffff80003c41eb50, count: 0 ddb{1}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000160b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001748000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff8000fffe9780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41e760) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064d073a0,1,fffffd80097fd1a0,ffff8000fffe9780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d3552a8,ffff8000fffe9780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d3552a8,ffff8000fffe9780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d3552a8,ffff8000fffe9780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe9780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe9780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe9780,ffff80003c41ead0,ffff80003c41ea20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41ead0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41ead0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7596d2ebf930, count: -15