uvm_fault(0xfffffd806eaf6010, 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 159356 11746 0 0x14000 0x200 0 smr dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333ddaa0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c6b2710,81,fffffd80097fd340,ffff800035bf8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80631a65f8,ffff800035bf8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80631a65f8,ffff800035bf8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800035bf8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800035bf8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800035bf8d18,ffff8000333dde10,ffff8000333ddd60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333dde10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333dde10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b6da2918020, 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(0xfffffd806eaf6010, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333ddaa0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c6b2710,81,fffffd80097fd340,ffff800035bf8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80631a65f8,ffff800035bf8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80631a65f8,ffff800035bf8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800035bf8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800035bf8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800035bf8d18,ffff8000333dde10,ffff8000333ddd60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333dde10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333dde10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b6da2918020, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000333dd9d0 rbx 0x1 rdx 0 rcx 0xffff800035bf8d18 rax 0xffffffff837d6fd0 dt_prov_syscall r8 0 r9 0x1 r10 0xf7621369f216b681 r11 0xbbe2d1bd96272 r12 0 r13 0 r14 0 r15 0xffff8000015b3800 rip 0xffffffff815dc978 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff8000333dd9a0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=449031 pid=72739 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800035bf8d18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800035bf7a18,0xffff8000fffee028 process=0xffff80002a3bf9d8 user=0xffff8000333d8000, vmspace=0xfffffd806eaf6010 estcpu=35, cpticks=21, pctcpu=0.5, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85821 181429 60799 0 2 0 syz-executor 85821 176580 60799 0 2 0x4000000 syz-executor 95965 484129 92778 0 2 0 syz-executor 95965 143631 92778 0 3 0x4000000 biowait syz-executor 3107 90357 76392 0 2 0x10 syz-executor 3107 495379 76392 0 3 0x4000090 fsleep syz-executor 3107 328592 76392 0 3 0x4000090 fsleep syz-executor 48899 249167 80598 0 2 0 syz-executor 88914 484440 6188 0 3 0x80 nanoslp syz-executor 88914 43836 6188 0 2 0x4000000 syz-executor 88914 278987 6188 0 3 0x4000080 fsleep syz-executor 1216 485313 59984 0 3 0x3000 suspend syz-executor 1216 86789 59984 0 3 0x4081000 biowait syz-executor 1216 17699 59984 0 3 0x4081000 inode syz-executor 1216 316923 59984 0 3 0x4081000 inode syz-executor 52819 521013 1 0 3 0x100083 ttyopn getty 51131 111456 0 0 3 0x14200 acct acct 60799 259559 53111 0 3 0x82 nanoslp syz-executor 92778 56662 53111 0 3 0x82 nanoslp syz-executor 55416 156868 53111 0 3 0x82 wait syz-executor 59984 361557 53111 0 3 0x82 wait syz-executor 76392 157448 53111 0 3 0x82 nanoslp syz-executor 6188 434576 53111 0 3 0x82 nanoslp syz-executor 40425 226231 53111 0 3 0x82 nanoslp syz-executor 80598 288639 53111 0 3 0x82 nanoslp syz-executor 53111 272424 44996 0 3 0x82 kqread syz-executor 44996 465236 75884 0 3 0x10008a sigsusp ksh 75884 321487 67506 0 3 0x98 kqread sshd-session 67506 52542 2892 0 3 0x92 kqread sshd-session 2892 444901 1 0 3 0x88 kqread sshd 36359 475255 15992 74 3 0x1100092 bpf pflogd 15992 234981 1 0 3 0x80 sbwait pflogd 39280 31855 27244 73 3 0x1100090 kqread syslogd 27244 371286 1 0 3 0x100082 sbwait syslogd 80642 500729 1 0 3 0x100080 kqread resolvd 95562 130748 33825 77 3 0x100092 kqread dhcpleased 34927 31723 33825 77 3 0x100092 kqread dhcpleased 33825 161200 1 0 3 0x80 kqread dhcpleased 11746 159356 0 0 7 0x14200 smr 51664 134192 0 0 3 0x14200 pgzero zerothread 20735 460148 0 0 3 0x14200 aiodoned aiodoned 35686 141733 0 0 3 0x14200 syncer update 48442 271604 0 0 3 0x14200 cleaner cleaner 80203 246798 0 0 3 0x14200 reaper reaper 60771 154016 0 0 3 0x14200 pgdaemon pagedaemon 29996 273676 0 0 3 0x14200 bored viomb 750 482623 0 0 3 0x40014200 acpi0 acpi0 2142 479105 0 0 3 0x40014200 idle1 54307 86739 0 0 3 0x14200 bored softnet1 56822 172223 0 0 3 0x14200 bored softnet0 45031 173811 0 0 3 0x14200 bored systqmp 86395 40345 0 0 3 0x14200 bored systq 22640 305509 0 0 3 0x14200 tmoslp softclockmp 27144 202810 0 0 3 0x40014200 tmoslp softclock 2045 299770 0 0 3 0x40014200 idle0 1 26682 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 95965 (syz-executor) thread 0xffff800035bf7780 (143631) exclusive rrwlock inode r = 0 (0xfffffd806add38f8) #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 88914 (syz-executor) thread 0xffff8000fffef240 (43836) exclusive rrwlock inode r = 0 (0xfffffd806e904490) #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 1216 (syz-executor) thread 0xffff800035bf94e0 (86789) exclusive rrwlock inode r = 0 (0xfffffd806add30e0) #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 1216 (syz-executor) thread 0xffff800035bf7a18 (316923) exclusive rrwlock inode r = 0 (0xfffffd806e9045b8) #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 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x15a sys/kern/vfs_vnops.c:140 #8 sys_ktrace+0x9a sys/kern/kern_ktrace.c:551 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 Process 11746 (smr) thread 0xffff8000ffffc538 (159356) shared rwlock smr r = 0 (0xffffffff837b5728) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 smr_thread+0x3cd sys/kern/kern_smr.c:-1 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11095 12220K 12339K 166960K 12717 0 pcb 19 16K 18K 166960K 249 0 rtable 236 9K 9K 166960K 490 0 pf 33 17K 19K 166960K 69 0 ifaddr 39 6K 7K 166960K 63 0 ifgroup 51 2K 2K 166960K 88 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 108 0 ioctlops 0 0K 4K 166960K 1525 0 iov 0 0K 20K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1406 88K 89K 166960K 1731 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 487 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 163K 166960K 565 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 0 0K 0K 166960K 42 0 in_multi 88 6K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 482 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 167K 194K 166960K 6040 0 UVM aobj 10 4K 4K 166960K 12 0 pinsyscall 43 86K 104K 166960K 1617 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 29 0 NDP 11 0K 2K 166960K 40 0 temp 46 8676K 8747K 166960K 29038 0 kqueue 13 20K 30K 166960K 114 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 59 0 55 1 0 1 1 0 8 0 rtentry 176 129 0 29 6 0 6 6 0 8 0 unpcb 144 280 0 261 4 3 1 4 0 8 0 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 227 0 222 7 0 7 7 0 8 5 arp 136 22 0 7 1 0 1 1 0 8 0 inpcb 328 732 0 722 13 6 7 7 0 8 5 nd6 152 26 0 3 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 16 0 16 2 1 1 1 0 8 1 pppxif 1504 2 0 2 2 2 0 1 0 8 0 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 2 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 1 1 0 1 1 0 8 0 pfstate 448 2 0 1 1 0 1 1 0 8 0 pfrule 1360 1 0 0 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 502 0 76 30 1 29 30 0 8 0 art_table 40 503 0 76 5 0 5 5 0 8 0 art_node 32 128 0 37 1 0 1 1 0 8 0 semapl 112 9 0 2 1 0 1 1 0 8 0 shmpl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2272 0 756 96 0 96 96 0 8 0 ffsino 296 2272 0 756 117 0 117 117 0 8 0 nchpl 144 2946 0 1242 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 vnodes 216 2557 0 0 143 0 143 143 0 8 0 namei 1024 9566 0 9565 2 0 2 2 0 8 1 percpumem 16 69 0 20 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 50 0 26 3 1 2 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 17949 0 17947 9 8 1 8 1 8 0 plimitpl 152 172 0 153 1 0 1 1 0 8 0 sigapl 424 791 0 742 7 1 6 7 0 8 0 knotepl 120 512 0 0 16 0 16 16 0 8 0 kqueuepl 224 179 0 168 3 2 1 3 0 8 0 pipepl 344 151 0 124 3 0 3 3 0 8 0 fdescpl 528 770 0 738 3 0 3 3 0 8 0 filepl 160 4325 0 4096 20 3 17 17 0 8 6 lockfpl 104 184 0 181 1 0 1 1 0 8 0 lockfspl 48 57 0 54 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 653 0 639 1 0 1 1 0 8 0 zombiepl 144 838 0 835 1 0 1 1 0 8 0 processpl 1232 791 0 742 5 1 4 5 0 8 0 procpl 664 1357 0 1299 6 0 6 6 0 8 0 sosppl 176 3 0 3 2 1 1 1 0 8 1 sockpl 752 1086 0 1053 18 6 12 12 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 119 0 0 15 0 15 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 256 190 0 0 12 0 12 12 0 8 0 bufpl 280 7490 0 1353 439 0 439 439 0 8 0 anonpl 32 12289 0 0 100 0 100 100 0 246 0 amapchunkpl 152 19219 0 18704 38 2 36 36 0 158 14 amappl16 200 3372 0 3109 36 20 16 22 0 8 2 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 10 0 10 1 1 0 1 0 8 0 amappl13 176 420 0 419 1 0 1 1 0 8 0 amappl12 168 1138 0 1094 3 0 3 3 0 8 0 amappl11 160 120 0 120 1 1 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 32 0 29 1 0 1 1 0 8 0 amappl7 128 79 0 78 1 0 1 1 0 8 0 amappl6 120 281 0 268 1 0 1 1 0 8 0 amappl5 112 120 0 109 1 0 1 1 0 8 0 amappl4 104 453 0 423 1 0 1 1 0 8 0 amappl3 96 3278 0 3180 4 1 3 3 0 8 0 amappl2 88 903 0 826 2 0 2 2 0 8 0 amappl1 80 11535 0 10941 15 1 14 15 0 8 0 amappl 88 5226 0 5052 5 0 5 5 0 92 0 uvmvnodes 80 114 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 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 9 0 9 2 1 1 1 0 8 1 dma128 128 255 0 255 3 3 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 11 0 2 1 0 1 1 0 8 0 uaddrrnd 24 770 0 738 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 770 0 738 1 0 1 1 0 8 0 vmmpekpl 168 8204 0 8171 2 0 2 2 0 8 0 vmmpepl 168 57819 0 55621 108 5 103 103 0 357 2 vmsppl 488 769 0 738 6 1 5 5 0 8 1 rwobjpl 80 19224 0 17935 31 1 30 30 0 8 1 pdppl 4096 1550 0 1477 97 24 73 82 0 8 0 pvpl 32 19593 0 0 159 0 159 159 0 265 0 pmappl 256 770 0 738 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 28 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837bbff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 intr_handler(ffff80002a2520c0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d wakeup_n(ffff8000333dd99c,1) at wakeup_n+0x32e sys/kern/kern_synch.c:606 smr_thread(ffff8000ffffc538) at smr_thread+0x457 sys/kern/kern_smr.c:-1 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff837bbff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 intr_handler(ffff80002a2520c0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d wakeup_n(ffff8000333dd99c,1) at wakeup_n+0x32e sys/kern/kern_synch.c:606 smr_thread(ffff8000ffffc538) at smr_thread+0x457 sys/kern/kern_smr.c:-1 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333ddaa0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c6b2710,81,fffffd80097fd340,ffff800035bf8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80631a65f8,ffff800035bf8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80631a65f8,ffff800035bf8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800035bf8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800035bf8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800035bf8d18,ffff8000333dde10,ffff8000333ddd60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333dde10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333dde10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b6da2918020, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800035bf8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333ddaa0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c6b2710,81,fffffd80097fd340,ffff800035bf8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80631a65f8,ffff800035bf8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80631a65f8,ffff800035bf8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80631a65f8,ffff800035bf8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800035bf8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800035bf8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800035bf8d18,ffff8000333dde10,ffff8000333ddd60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333dde10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333dde10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b6da2918020, count: -12