uvm_fault(0xfffffd806e38a3d0, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 216305 93946 0 0x2 0x1 1 syz-executor witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001511330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001481000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000343e30f0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806bfacb28,81,fffffd80097fb410,ffff80003c46b4c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e016760,ffff80003c46b4c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e016760,ffff80003c46b4c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46b4c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46b4c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46b4c0,ffff8000343e3460,ffff8000343e33b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000343e3460) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000343e3460) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff8000343e34e0, 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(0xfffffd806e38a3d0, 0x48, 0, 1) -> e ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001511330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001481000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000343e30f0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806bfacb28,81,fffffd80097fb410,ffff80003c46b4c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e016760,ffff80003c46b4c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e016760,ffff80003c46b4c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46b4c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46b4c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46b4c0,ffff8000343e3460,ffff8000343e33b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000343e3460) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000343e3460) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7379c41cc590, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000343e2f50 rbx 0 rdx 0 rcx 0xffff80003c46b4c0 rax 0xffffffff8383cff0 cpu_info_full_primary+0x1ff0 r8 0x88 r9 0 r10 0xfea9aca2ceba1159 r11 0xf0966e0c97f5c3d0 r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff824a2d39 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000343e2ea0 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=345728 pid=12036 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c46b4c0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c46ad10,0xffff80003c46bc80 process=0xffff80003c4e6210 user=0xffff8000343de000, vmspace=0xfffffd806e38a3d0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65702 316869 87652 0 2 0 syz-executor 22150 140831 25963 0 2 0 syz-executor 22150 109467 25963 0 2 0x4000000 syz-executor 5931 397308 28090 0 2 0 syz-executor 5931 162171 28090 0 3 0x4000080 fsleep syz-executor 5931 194354 28090 0 2 0x4000000 syz-executor 22453 446854 17845 0 3 0x3000 suspend syz-executor 22453 34933 17845 0 3 0x4081000 smrbar syz-executor 2473 264210 80729 0 3 0x80 nanoslp syz-executor 2473 385703 80729 0 3 0x4000080 wsevent_read syz-executor 2473 229449 80729 0 3 0x4000080 fsleep syz-executor 90521 149978 0 0 3 0x14200 acct acct 18690 395345 1 0 3 0x100083 ttyin getty 38581 160266 0 0 3 0x14280 nfsidl nfsio 79195 365782 0 0 3 0x14280 nfsidl nfsio 7500 48256 0 0 3 0x14280 nfsidl nfsio 34943 345014 0 0 3 0x14280 nfsidl nfsio 30423 9242 0 0 3 0x14280 nfsidl nfsio 49491 260780 0 0 3 0x14280 nfsidl nfsio 70719 60406 0 0 3 0x14280 nfsidl nfsio 41636 370840 0 0 3 0x14280 nfsidl nfsio 72225 521570 0 0 3 0x14280 nfsidl nfsio 58502 328979 0 0 3 0x14280 nfsidl nfsio 10472 91084 0 0 3 0x14280 nfsidl nfsio 7372 349460 0 0 3 0x14280 nfsidl nfsio 27976 234340 0 0 3 0x14280 nfsidl nfsio 41808 302574 0 0 3 0x14280 nfsidl nfsio 65296 478533 0 0 3 0x14280 nfsidl nfsio 10212 349517 0 0 3 0x14280 nfsidl nfsio 7753 332497 0 0 3 0x14280 nfsidl nfsio 44909 222946 0 0 3 0x14280 nfsidl nfsio 93230 417101 0 0 3 0x14280 nfsidl nfsio 28617 194054 0 0 3 0x14280 nfsidl nfsio 30211 400045 0 0 3 0x14200 bored sosplice 80729 69244 93946 0 3 0x82 nanoslp syz-executor 62122 269607 93946 0 2 0x2 syz-executor 28090 521410 93946 0 3 0x82 nanoslp syz-executor 87652 185203 93946 0 2 0x2 syz-executor 25963 217143 93946 0 3 0x82 nanoslp syz-executor 47859 29218 93946 0 2 0x2 syz-executor 45531 171698 93946 0 2 0x2 syz-executor 17845 127346 93946 0 3 0x82 nanoslp syz-executor 93946 216305 19638 0 7 0x3 syz-executor 19638 168699 38513 0 3 0x10008a sigsusp ksh 38513 376556 68617 0 3 0x98 kqread sshd-session 68617 94676 85306 0 3 0x92 kqread sshd-session 85306 364865 1 0 3 0x88 kqread sshd 10117 221937 80494 74 3 0x1100092 bpf pflogd 80494 137867 1 0 3 0x80 sbwait pflogd 32699 221076 38861 73 3 0x1100090 kqread syslogd 38861 27300 1 0 3 0x100082 sbwait syslogd 1106 47947 1 0 3 0x100080 kqread resolvd 49941 279680 81169 77 3 0x100092 kqread dhcpleased 56985 328729 81169 77 3 0x100092 kqread dhcpleased 81169 517364 1 0 3 0x80 kqread dhcpleased 420 89775 0 0 3 0x14200 bored smr 40450 72552 0 0 2 0x14200 zerothread 89279 144202 0 0 3 0x14200 aiodoned aiodoned 78741 9213 0 0 3 0x14200 syncer update 32867 326006 0 0 3 0x14200 cleaner cleaner 22344 120492 0 0 2 0x14200 reaper 75710 436158 0 0 3 0x14200 pgdaemon pagedaemon 55559 307310 0 0 3 0x14200 bored viomb 67350 394969 0 0 3 0x40014200 acpi0 acpi0 81865 74205 0 0 3 0x40014200 idle1 59303 405448 0 0 3 0x14200 bored softnet3 31298 241409 0 0 3 0x14200 bored softnet2 55526 166075 0 0 3 0x14200 bored softnet1 4000 436608 0 0 2 0x14200 softnet0 59557 96394 0 0 3 0x14200 bored systqmp 67020 67968 0 0 3 0x14200 bored systq 62269 57480 0 0 3 0x14200 tmoslp softclockmp 48705 27011 0 0 3 0x40014200 tmoslp softclock 12284 265656 0 0 3 0x40014200 idle0 1 256540 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 22150 (syz-executor) thread 0xffff80002a297c50 (109467) exclusive rrwlock inode r = 0 (0xfffffd80791648a8) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 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+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 #10 domknodat+0x47e sys/kern/vfs_syscalls.c:1636 #11 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e372890) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 11062K 11486K 166960K 12932 0 pcb 17 15K 16K 166960K 314 0 rtable 206 9K 9K 166960K 468 0 pf 41 19K 81K 166960K 131 0 ifaddr 39 6K 8K 166960K 81 0 ifgroup 63 2K 2K 166960K 130 0 sysctl 3 1K 9K 166960K 9 0 counters 72 37K 37K 166960K 284 0 ioctlops 0 0K 4K 166960K 1704 0 iov 0 0K 16K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1467 92K 93K 166960K 2377 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 930 0 sigio 0 0K 0K 166960K 12 0 proc 72 91K 128K 166960K 627 0 subproc 72 4K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 266 0 in_multi 78 5K 7K 166960K 133 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 9 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 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 224 159K 174K 166960K 10523 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 41 82K 105K 166960K 2064 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 49 0 NDP 13 0K 2K 166960K 51 0 temp 60 8680K 8749K 166960K 39492 0 kqueue 13 20K 32K 166960K 206 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 79 1 0 1 1 0 8 0 rtentry 176 134 0 51 6 0 6 6 0 8 0 unpcb 144 682 0 663 9 3 6 6 0 8 5 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 250 0 245 7 5 2 7 0 8 1 arp 128 21 0 6 1 0 1 1 0 8 0 inpcb 328 1177 0 1169 19 15 4 12 0 8 2 nd6 144 27 0 7 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 2 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 99 0 98 1 0 1 1 0 8 0 pppxif 1504 8 0 7 3 2 1 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 9 0 4 1 0 1 1 0 482 0 pffrnode 88 9 0 4 1 0 1 1 0 8 0 pffrent 40 13 0 8 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 3 0 0 1 0 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfstitem 24 60 0 25 1 0 1 1 0 8 0 pfstkey 128 61 0 26 2 0 2 2 0 8 0 pfstate 384 61 0 26 5 0 5 5 0 8 0 pfrule 1344 30 0 21 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 526 0 162 29 2 27 29 0 8 2 art_table 40 528 0 162 5 0 5 5 0 8 0 art_node 32 132 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 6 2 1 1 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 24 0 7 3 0 3 3 0 8 0 dino2pl 256 3066 0 1561 95 0 95 95 0 8 0 ffsino 288 3066 0 1561 109 0 109 109 0 8 0 nchpl 144 4388 0 2694 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 uvmvnodes 80 3857 0 0 79 0 79 79 0 8 0 vnodes 216 3857 0 0 215 0 215 215 0 8 0 namei 1024 14943 0 14942 2 1 1 2 0 8 0 percpumem 16 157 0 106 1 0 1 1 0 8 0 kstatmem 264 74 0 44 5 2 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 30393 0 30393 10 9 1 8 1 8 1 plimitpl 152 134 0 117 1 0 1 1 0 8 0 sigapl 424 1267 0 1197 10 1 9 9 0 8 0 knotepl 120 542 0 0 16 0 16 16 0 8 0 kqueuepl 224 522 0 511 9 4 5 5 0 8 4 pipepl 336 224 0 197 3 0 3 3 0 8 0 fdescpl 520 1225 0 1195 3 0 3 3 0 8 0 filepl 160 7896 0 7676 24 5 19 19 0 8 8 lockfpl 104 686 0 683 2 0 2 2 0 8 1 lockfspl 48 316 0 313 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 873 0 859 1 0 1 1 0 8 0 zombiepl 144 1199 0 1197 1 0 1 1 0 8 0 processpl 1240 1267 0 1197 6 0 6 6 0 8 0 procpl 656 2697 0 2620 9 1 8 8 0 8 0 sosppl 168 5 0 5 3 2 1 1 0 8 1 sockpl 728 1967 0 1936 27 16 11 15 0 8 7 mcl64k 65536 4 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 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 30 0 0 1 0 1 1 0 8 0 mbufpl 256 1194 0 0 75 0 75 75 0 8 0 bufpl 280 12522 0 6380 439 0 439 439 0 8 0 anonpl 32 11651 0 0 94 0 94 94 0 246 0 amapchunkpl 152 35316 0 34866 35 6 29 30 0 158 6 amappl16 200 4927 0 4889 33 18 15 28 0 8 1 amappl15 192 33 0 33 1 1 0 1 0 8 0 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1888 0 1859 4 2 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 37 0 34 1 0 1 1 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 187 0 183 1 0 1 1 0 8 0 amappl5 112 129 0 119 1 0 1 1 0 8 0 amappl4 104 336 0 316 1 0 1 1 0 8 0 amappl3 96 6727 0 6632 5 1 4 4 0 8 0 amappl2 88 670 0 607 2 0 2 2 0 8 0 amappl1 80 12047 0 11455 15 1 14 15 0 8 0 amappl 88 9686 0 9533 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1225 0 1195 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1225 0 1195 1 0 1 1 0 8 0 vmmpekpl 168 11688 0 11644 3 0 3 3 0 8 0 vmmpepl 168 83515 0 81589 113 8 105 110 0 357 5 vmsppl 480 1224 0 1195 6 2 4 5 0 8 0 rwobjpl 72 28340 0 23553 93 0 93 93 0 8 0 pdppl 4096 2457 0 2390 111 40 71 85 0 8 4 pvpl 32 18381 0 0 149 1 148 148 0 265 0 pmappl 256 1224 0 1195 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 469 0 55 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001511330,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001481000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c46b4c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000343e30f0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806bfacb28,81,fffffd80097fb410,ffff80003c46b4c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805e016760,ffff80003c46b4c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805e016760,ffff80003c46b4c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805e016760,ffff80003c46b4c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c46b4c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c46b4c0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c46b4c0,ffff8000343e3460,ffff8000343e33b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000343e3460) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000343e3460) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7379c41cc590, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffffffff8396acc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396acc0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrstruct(ffff80002a2bace8,ffffffff83365d05,ffff80002a2e6098,10) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_pselect(ffff80002a2bace8,ffff80002a2e61e0,ffff80002a2e6130) at sys_pselect+0x129 sys/kern/sys_generic.c:577 syscall(ffff80002a2e61e0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e61e0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e2246bd5bd0, count: 7 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffffffff8396acc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396acc0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrstruct(ffff80002a2bace8,ffffffff83365d05,ffff80002a2e6098,10) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_pselect(ffff80002a2bace8,ffff80002a2e61e0,ffff80002a2e6130) at sys_pselect+0x129 sys/kern/sys_generic.c:577 syscall(ffff80002a2e61e0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e61e0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e2246bd5bd0, count: -8