uvm_fault(0xfffffd806c70e9a8, 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 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(ffff80000160e030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000168c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4b7290) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068d3f7a8,1,fffffd80097fd5b0,ffff8000fffe87e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f5a2898,ffff8000fffe87e8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd805f5a2898,ffff8000fffe87e8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe87e8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe87e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe87e8,ffff80003c4b7600,ffff80003c4b7550) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b7600) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b7600) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003c4b7680, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806c70e9a8, 0x48, 0, 1) -> e ddb{0}> 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(ffff80000160e030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000168c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4b7290) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068d3f7a8,1,fffffd80097fd5b0,ffff8000fffe87e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f5a2898,ffff8000fffe87e8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd805f5a2898,ffff8000fffe87e8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe87e8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe87e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe87e8,ffff80003c4b7600,ffff80003c4b7550) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b7600) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b7600) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a1b12c44c40, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4b70b0 rbx 0 rdx 0 rcx 0xffff8000fffe87e8 rax 0xffffffff838fcffe cpu_info_full_primary+0x1ffe r8 0 r9 0x1 r10 0xcd0755f7f9d416e9 r11 0xc8612f0f77c25116 r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff82788065 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4b7010 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=1506 pid=13754 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=75, usrpri=75, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe87e8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003b7b9258,0xffff80003b7b6568 process=0xffff8000fffdc9c8 user=0xffff80003c4b2000, vmspace=0xfffffd806c70e9a8 estcpu=25, cpticks=5, pctcpu=0.3, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67350 196004 95607 0 2 0 syz-executor 67350 392607 95607 0 3 0x4000080 dtread syz-executor 67350 488893 95607 0 3 0x4000080 fsleep syz-executor 89868 461654 22072 0 2 0x1 syz-executor 89868 440492 22072 0 3 0x4000080 lockf syz-executor 89868 152956 22072 0 3 0x4000080 fsleep syz-executor 4683 421191 50551 0 2 0x1 syz-executor 4683 134326 50551 0 3 0x4000080 msgwait syz-executor 4683 46703 50551 0 3 0x4000080 fsleep syz-executor 99881 372248 26811 0 3 0x82 nanoslp syz-executor 32373 280346 99774 0 3 0x3000 suspend syz-executor 32373 267477 99774 0 2 0x4081000 syz-executor 32373 134123 99774 0 3 0x4081000 inode syz-executor 41183 490275 0 0 3 0x14280 nfsidl nfsio 27385 312239 0 0 3 0x14280 nfsidl nfsio 49879 186122 0 0 3 0x14280 nfsidl nfsio 37122 499305 0 0 3 0x14280 nfsidl nfsio 36306 355747 0 0 3 0x14280 nfsidl nfsio 10221 322491 0 0 3 0x14280 nfsidl nfsio 17080 153652 0 0 3 0x14280 nfsidl nfsio 49375 236853 0 0 3 0x14280 nfsidl nfsio 1098 244258 0 0 3 0x14280 nfsidl nfsio 5077 31294 0 0 3 0x14280 nfsidl nfsio 33470 270723 0 0 3 0x14280 nfsidl nfsio 59357 45571 0 0 3 0x14280 nfsidl nfsio 85192 473711 0 0 3 0x14280 nfsidl nfsio 23707 328395 0 0 3 0x14280 nfsidl nfsio 98416 261291 0 0 3 0x14280 nfsidl nfsio 96273 219881 0 0 3 0x14280 nfsidl nfsio 89119 439777 0 0 3 0x14280 nfsidl nfsio 78677 19797 0 0 3 0x14280 nfsidl nfsio 3268 394712 0 0 3 0x14280 nfsidl nfsio 2389 206273 0 0 3 0x14280 nfsidl nfsio 44006 418034 26811 0 2 0x3 syz-executor 48314 54805 26811 0 3 0x82 wait syz-executor 22072 510658 26811 0 2 0x3 syz-executor 99774 96636 26811 0 3 0x82 wait syz-executor 95607 127470 26811 0 2 0x2 syz-executor 50551 238513 26811 0 3 0x82 nanoslp syz-executor 96931 61151 26811 0 3 0x82 wait syz-executor 26811 445087 27783 0 3 0x82 kqread syz-executor 27783 432940 49616 0 3 0x10008a sigsusp ksh 49616 357895 7890 0 3 0x98 kqread sshd-session 7890 8601 91635 0 3 0x92 kqread sshd-session 68067 85854 1 0 3 0x100083 ttyin getty 91635 145260 1 0 3 0x88 kqread sshd 69210 243648 91735 74 3 0x1100092 bpf pflogd 91735 91514 1 0 3 0x80 sbwait pflogd 51533 111797 31337 73 3 0x1100090 kqread syslogd 31337 175901 1 0 3 0x100082 sbwait syslogd 11751 24177 1 0 3 0x100080 kqread resolvd 6820 6689 17185 77 3 0x100092 kqread dhcpleased 2615 72719 17185 77 3 0x100092 kqread dhcpleased 17185 458415 1 0 3 0x80 kqread dhcpleased 77436 100487 0 0 3 0x14200 bored smr 61667 168755 0 0 3 0x14200 pgzero zerothread 71087 364826 0 0 3 0x14200 aiodoned aiodoned 48205 355627 0 0 3 0x14200 syncer update 94874 611 0 0 3 0x14200 cleaner cleaner 7566 145064 0 0 2 0x14200 reaper 67179 346172 0 0 3 0x14200 pgdaemon pagedaemon 81799 309280 0 0 3 0x14200 bored viomb 96916 269156 0 0 3 0x40014200 acpi0 acpi0 44479 69317 0 0 3 0x40014200 idle1 62658 515713 0 0 3 0x14200 bored softnet1 92076 252642 0 0 3 0x14200 bored softnet0 71317 9135 0 0 3 0x14200 bored systqmp 86959 452036 0 0 3 0x14200 bored systq 30583 300655 0 0 3 0x14200 tmoslp softclockmp 85108 458326 0 0 3 0x40014200 tmoslp softclock 49121 59320 0 0 3 0x40014200 idle0 1 323106 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c70dd10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_do_remove+0xa9 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1824 #3 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 #4 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #4 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 #5 exit1+0x6fc sys/kern/kern_exit.c:260 #6 sys_exit+0x1a sys/kern/kern_exit.c:-1 #7 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #8 Xsyscall+0x128 Process 32373 (syz-executor) thread 0xffff80003b7b87f8 (267477) exclusive rrwlock inode r = 0 (0xfffffd807028f120) #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+0x2bd sys/kern/sys_generic.c:384 #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:783 #9 Xsyscall+0x128 Process 7566 (reaper) thread 0xffff8000ffffdc90 (145064) exclusive rwlock kmmaplk r = 0 (0xffffffff839e5d50) #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_unmap+0x7d sys/uvm/uvm_map.c:1798 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11089 12269K 13017K 166960K 12575 0 pcb 17 14K 17K 166960K 153 0 rtable 255 8K 9K 166960K 416 0 pf 35 17K 82K 166960K 65 0 ifaddr 43 7K 8K 166960K 57 0 ifgroup 55 2K 2K 166960K 71 0 sysctl 3 1K 9K 166960K 7 0 counters 70 37K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1531 0 iov 0 0K 12K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1591 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 318 0 sigio 0 0K 0K 166960K 8 0 proc 72 115K 180K 166960K 619 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 2 0K 0K 166960K 30 0 in_multi 99 7K 7K 166960K 120 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 539 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 259 169K 185K 166960K 4865 0 UVM aobj 9 4K 4K 166960K 10 0 pinsyscall 42 84K 103K 166960K 1491 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 12 0K 2K 166960K 36 0 temp 39 9071K 9135K 166960K 12963 0 kqueue 16 22K 26K 166960K 59 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 83 0 80 2 1 1 2 0 8 0 rtentry 176 123 0 12 6 0 6 6 0 8 0 unpcb 144 161 0 143 3 1 2 2 0 8 1 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 87 0 81 2 1 1 2 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 344 0 333 9 0 9 9 0 8 7 nd6 152 27 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 6 0 6 2 1 1 1 0 8 1 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 2 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 30 0 0 1 0 1 1 0 8 0 pfstkey 128 30 0 0 1 0 1 1 0 8 0 pfstate 448 29 0 0 4 0 4 4 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 505 0 44 32 1 31 32 0 8 0 art_table 40 507 0 44 6 0 6 6 0 8 0 art_node 32 123 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1926 0 455 93 0 93 93 0 8 0 ffsino 296 1926 0 455 114 0 114 114 0 8 0 nchpl 144 2462 0 751 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 vnodes 216 2157 0 0 120 0 120 120 0 8 0 namei 1024 8432 0 8432 3 2 1 2 0 8 1 percpumem 16 58 0 8 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 38 0 12 3 1 2 3 0 8 0 scxspl 216 9804 0 9804 4 3 1 3 1 8 1 plimitpl 152 62 0 44 1 0 1 1 0 8 0 sigapl 424 650 0 582 8 0 8 8 0 8 0 knotepl 120 491 0 0 15 0 15 15 0 8 0 kqueuepl 224 110 0 99 3 2 1 3 0 8 0 pipepl 344 141 0 112 3 0 3 3 0 8 0 fdescpl 528 614 0 583 3 0 3 3 0 8 0 filepl 160 3064 0 2828 17 3 14 14 0 8 3 lockfpl 104 117 0 109 1 0 1 1 0 8 0 lockfspl 48 51 0 46 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 279 0 266 1 0 1 1 0 8 0 zombiepl 144 622 0 617 1 0 1 1 0 8 0 processpl 1232 650 0 582 6 0 6 6 0 8 0 procpl 664 957 0 877 7 0 7 7 0 8 0 sockpl 752 598 0 566 15 2 13 13 0 8 9 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 114 0 0 15 1 14 15 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 175 0 0 11 0 11 11 0 8 0 bufpl 280 3809 0 105 265 0 265 265 0 8 0 anonpl 32 7992 0 0 65 0 65 65 0 246 0 amapchunkpl 152 14780 0 14195 29 1 28 29 0 158 4 amappl16 200 2431 0 2179 16 2 14 14 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 441 0 440 1 0 1 1 0 8 0 amappl13 176 125 0 113 1 0 1 1 0 8 0 amappl12 168 870 0 840 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 1 0 1 0 8 0 amappl10 152 69 0 55 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 104 0 102 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 171 0 170 1 0 1 1 0 8 0 amappl5 112 99 0 88 1 0 1 1 0 8 0 amappl4 104 295 0 274 1 0 1 1 0 8 0 amappl3 96 2690 0 2561 4 0 4 4 0 8 0 amappl2 88 538 0 478 2 0 2 2 0 8 0 amappl1 80 10437 0 9839 17 1 16 16 0 8 2 amappl 88 4088 0 3902 5 0 5 5 0 92 0 uvmvnodes 80 106 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 128 253 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 24 614 0 583 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 614 0 583 1 0 1 1 0 8 0 vmmpekpl 168 6878 0 6836 3 0 3 3 0 8 0 vmmpepl 168 47637 0 45472 105 0 105 105 0 357 5 vmsppl 488 613 0 582 6 1 5 5 0 8 1 rwobjpl 80 16636 0 15341 30 0 30 30 0 8 2 pdppl 4096 1237 0 1165 101 27 74 85 0 8 2 pvpl 32 15394 0 0 125 0 125 125 0 265 0 pmappl 256 614 0 582 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 36 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> 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(ffff80000160e030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000168c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff8000fffe87e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4b7290) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068d3f7a8,1,fffffd80097fd5b0,ffff8000fffe87e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f5a2898,ffff8000fffe87e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f5a2898,ffff8000fffe87e8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd805f5a2898,ffff8000fffe87e8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff8000fffe87e8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff8000fffe87e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe87e8,ffff80003c4b7600,ffff80003c4b7550) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4b7600) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b7600) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a1b12c44c40, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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(ffffffff839dc8c0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839dc8c0) at __mp_lock+0x199 sys/kern/kern_lock.c:173 exit1(ffff80003b7b8560,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003b7b8560,ffff80003c4ab860,ffff80003c4ab7b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4ab860) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ab860) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7047f22ee360, count: 7 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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(ffffffff839dc8c0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839dc8c0) at __mp_lock+0x199 sys/kern/kern_lock.c:173 exit1(ffff80003b7b8560,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003b7b8560,ffff80003c4ab860,ffff80003c4ab7b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4ab860) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ab860) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7047f22ee360, count: -8