uvm_fault(0xfffffd806b995020, 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 82481 50856 0 0x14000 0x200 0 reaper dt_ioctl_record_stop(ffff80000147a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c45d9f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066a7b8c8,1,fffffd80097fb4e0,ffff80002a2b7ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96f190,ffff80002a2b7ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b96f190,ffff80002a2b7ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b7ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b7ca8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b7ca8,ffff80003c45dd60,ffff80003c45dcb0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c45dd60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45dd60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bcac306df10, 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(0xfffffd806b995020, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff80000147a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c45d9f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066a7b8c8,1,fffffd80097fb4e0,ffff80002a2b7ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96f190,ffff80002a2b7ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b96f190,ffff80002a2b7ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b7ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b7ca8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b7ca8,ffff80003c45dd60,ffff80003c45dcb0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c45dd60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45dd60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bcac306df10, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c45d920 rbx 0x1 rdx 0 rcx 0xffff80002a2b7ca8 rax 0xffffffff83855660 dt_prov_static r8 0x9 r9 0x1 r10 0x4d3743b3a35737da r11 0xb110622d6786c4dd r12 0 r13 0 r14 0 r15 0xffff8000014a4400 rip 0xffffffff81afcf38 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c45d8f0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=484731 pid=82471 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=76, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2b7ca8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2b7248,0xffff80003a03c038 process=0xffff800037025360 user=0xffff80003c458000, vmspace=0xfffffd806b995020 estcpu=26, cpticks=5, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30258 372276 0 0 3 0x14280 nfsidl nfsio 76122 375549 76566 0 2 0 syz-executor 76122 152685 76566 0 3 0x4000080 fsleep syz-executor 91287 283556 83378 0 2 0 syz-executor 91287 478488 83378 0 3 0x4000080 fsleep syz-executor 33752 107209 0 0 3 0x14280 nfsidl nfsio 54233 355435 0 0 3 0x14280 nfsidl nfsio 58918 482201 0 0 3 0x14280 nfsidl nfsio 1574 482744 91224 0 2 0 syz-executor 1574 178507 91224 0 3 0x4000000 biowait syz-executor 15098 279252 51565 0 2 0 syz-executor 15098 360603 51565 0 2 0x4000000 syz-executor 15098 492515 51565 0 3 0x4000080 fsleep syz-executor 15098 275458 51565 0 3 0x4000080 fsleep syz-executor 55731 521325 31819 0 2 0 syz-executor 55731 21065 31819 0 3 0x4000080 fsleep syz-executor 94248 225141 50975 0 3 0 vmmaplk syz-executor 94248 486511 50975 0 2 0x4000000 syz-executor 94248 194130 50975 0 3 0x4000080 fsleep syz-executor 94299 147833 77816 0 2 0 syz-executor 94299 464184 77816 0 3 0x4000080 ttyout syz-executor 94299 99091 77816 0 3 0x4000080 kqsel syz-executor 94299 229624 77816 0 3 0x4000080 fsleep syz-executor 94299 322160 77816 0 3 0x4000080 fsleep syz-executor 11501 174810 0 0 3 0x14200 bored sosplice 77816 59484 49810 0 3 0x82 nanoslp syz-executor 91224 435658 49810 0 3 0x82 nanoslp syz-executor 83378 296896 49810 0 3 0x82 nanoslp syz-executor 31819 177130 49810 0 3 0x82 nanoslp syz-executor 46094 454248 49810 0 3 0x82 nanoslp syz-executor 76566 69997 49810 0 3 0x82 nanoslp syz-executor 51565 99184 49810 0 3 0x82 nanoslp syz-executor 50975 180945 49810 0 3 0x82 nanoslp syz-executor 49810 294075 72674 0 3 0x82 pipeiolk syz-executor 72674 444464 78602 0 3 0x10008a sigsusp ksh 78602 520034 74618 0 3 0x98 kqread sshd-session 74618 23154 33857 0 3 0x92 kqread sshd-session 64232 44391 1 0 3 0x100083 ttyin getty 33857 175123 1 0 3 0x88 kqread sshd 1762 308794 78821 74 3 0x1100092 bpf pflogd 78821 152859 1 0 3 0x80 sbwait pflogd 33413 441594 35152 73 3 0x1100090 kqread syslogd 35152 180686 1 0 3 0x100082 sbwait syslogd 99972 237557 1 0 3 0x100080 kqread resolvd 7034 522713 85033 77 3 0x100092 kqread dhcpleased 88200 444028 85033 77 3 0x100092 kqread dhcpleased 85033 204741 1 0 3 0x80 kqread dhcpleased 52859 42345 0 0 3 0x14200 bored smr 31039 176830 0 0 2 0x14200 zerothread 87749 508740 0 0 3 0x14200 aiodoned aiodoned 76086 65090 0 0 3 0x14200 syncer update 82984 402566 0 0 3 0x14200 cleaner cleaner 50856 82481 0 0 7 0x14200 reaper 26970 364077 0 0 3 0x14200 pgdaemon pagedaemon 55957 426520 0 0 3 0x14200 bored viomb 93308 43925 0 0 3 0x40014200 acpi0 acpi0 74402 366181 0 0 3 0x40014200 idle1 36861 282346 0 0 3 0x14200 bored softnet7 44131 3747 0 0 3 0x14200 bored softnet6 48875 343590 0 0 3 0x14200 bored softnet5 20988 398527 0 0 3 0x14200 bored softnet4 6989 63791 0 0 3 0x14200 bored softnet3 84040 419761 0 0 3 0x14200 bored softnet2 86146 419553 0 0 3 0x14200 bored softnet1 33369 521214 0 0 3 0x14200 bored softnet0 23930 150897 0 0 3 0x14200 bored systqmp 4079 46328 0 0 3 0x14200 bored systq 12230 97422 0 0 3 0x14200 tmoslp softclockmp 34894 242058 0 0 3 0x40014200 tmoslp softclock 40762 132601 0 0 3 0x40014200 idle0 1 122994 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 1574 (syz-executor) thread 0xffff80003a03ca88 (178507) exclusive rrwlock inode r = 0 (0xfffffd806ee12a28) #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_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1640 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80651f0900) #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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1592 #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 Process 15098 (syz-executor) thread 0xffff80003a03c028 (360603) exclusive rwlock sysctllk r = 0 (0xffffffff838360a8) #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 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:191 #3 sys_sysctl+0x371 sys/kern/kern_sysctl.c:301 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #5 Xsyscall+0x128 Process 94248 (syz-executor) thread 0xffff80003a03d780 (486511) exclusive rwlock vmmaplk r = 0 (0xfffffd806b995c90) #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:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283 #7 kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 #8 alltraps_kern_meltdown+0x7b #9 _copyin+0x57 #10 pipe_write+0x493 sys/kern/sys_pipe.c:560 #11 dofilewritev+0x242 sys/kern/sys_generic.c:380 #12 sys_write+0xa2 sys/kern/sys_generic.c:300 #13 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 11114K 11126K 166960K 11426 0 pcb 18 12K 12K 166960K 40 0 rtable 207 5K 6K 166960K 267 0 pf 34 17K 18K 166960K 49 0 ifaddr 44 7K 7K 166960K 48 0 ifgroup 55 2K 2K 166960K 59 0 sysctl 3 1K 9K 166960K 7 0 counters 68 36K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1524 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1343 85K 85K 166960K 1445 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 85K 166960K 223 0 sigio 0 0K 0K 166960K 3 0 proc 72 115K 147K 166960K 537 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 8 0 in_multi 103 7K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 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 413 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 261 168K 179K 166960K 3921 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 100K 166960K 1341 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 12 0K 2K 166960K 30 0 temp 37 8642K 8707K 166960K 13181 0 kqueue 14 20K 32K 166960K 35 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 41 0 38 1 0 1 1 0 8 0 rtentry 176 96 0 1 5 0 5 5 0 8 0 unpcb 144 86 0 67 2 0 2 2 0 8 1 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 25 0 20 1 0 1 1 0 8 0 arp 128 10 0 0 1 0 1 1 0 8 0 inpcb 328 271 0 262 7 0 7 7 0 8 5 nd6 144 17 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrent 40 1 0 1 1 0 1 1 0 8 1 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 27 0 0 1 0 1 1 0 8 0 pfstkey 128 27 0 0 1 0 1 1 0 8 0 pfstate 384 27 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 438 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1753 0 240 96 0 96 96 0 8 1 ffsino 296 1753 0 240 118 0 118 118 0 8 1 nchpl 144 2051 0 360 63 0 63 63 0 8 0 uvmvnodes 80 1862 0 0 38 0 38 38 0 8 0 vnodes 216 1862 0 0 104 0 104 104 0 8 0 namei 1024 6462 0 6461 4 3 1 2 0 8 0 percpumem 16 51 0 2 1 0 1 1 0 8 0 kstatmem 264 30 0 4 2 0 2 2 0 8 0 scxspl 216 7497 0 7496 9 8 1 8 1 8 0 plimitpl 152 84 0 67 1 0 1 1 0 8 0 sigapl 424 541 0 482 7 0 7 7 0 8 0 knotepl 120 693 0 0 21 0 21 21 0 8 0 kqueuepl 224 42 0 31 1 0 1 1 0 8 0 pipepl 344 112 0 84 3 0 3 3 0 8 0 fdescpl 528 514 0 482 3 0 3 3 0 8 0 filepl 160 2258 0 2036 13 0 13 13 0 8 2 lockfpl 104 27 0 25 1 0 1 1 0 8 0 lockfspl 48 14 0 12 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 104 296 0 283 1 0 1 1 0 8 0 zombiepl 144 519 0 518 1 0 1 1 0 8 0 processpl 1232 541 0 482 5 0 5 5 0 8 0 procpl 664 699 0 626 7 0 7 7 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 752 402 0 371 11 0 11 11 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 210 0 0 14 0 14 14 0 8 0 bufpl 280 3091 0 123 212 0 212 212 0 8 0 anonpl 32 7375 0 0 60 0 60 60 0 246 0 amapchunkpl 152 11386 0 10808 26 3 23 23 0 158 0 amappl16 200 2360 0 2324 17 5 12 14 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 118 0 105 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 1174 0 1142 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 10 0 9 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 185 0 180 1 0 1 1 0 8 0 amappl5 112 121 0 112 1 0 1 1 0 8 0 amappl4 104 323 0 305 1 0 1 1 0 8 0 amappl3 96 1848 0 1722 5 1 4 4 0 8 0 amappl2 88 666 0 602 2 0 2 2 0 8 0 amappl1 80 9015 0 8408 16 1 15 16 0 8 0 amappl 88 3201 0 3014 5 0 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 8 0 8 2 1 1 1 0 8 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 514 0 482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 514 0 482 1 0 1 1 0 8 0 vmmpekpl 168 6005 0 5966 2 0 2 2 0 8 0 vmmpepl 168 40124 0 38060 98 1 97 97 0 357 5 vmsppl 488 513 0 482 5 0 5 5 0 8 1 rwobjpl 80 16140 0 13308 60 0 60 60 0 8 0 pdppl 4096 1036 0 964 94 22 72 82 0 8 0 pvpl 32 13070 0 0 106 0 106 106 0 265 0 pmappl 256 513 0 482 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 269 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(ffffffff83781ff0) 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(ffffffff839777d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839777d8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a268880,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(2,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(2,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff83834bf8,ffffffff83834bc0,4,ffffffff8338560d,ffffffffffffffff) at msleep_nsec+0xa2 sys/kern/kern_synch.c:188 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff83781ff0) 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(ffffffff839777d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839777d8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a268880,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(2,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(2,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 msleep_nsec(ffffffff83834bf8,ffffffff83834bc0,4,ffffffff8338560d,ffffffffffffffff) at msleep_nsec+0xa2 sys/kern/kern_synch.c:188 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 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(ffff80000147a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c45d9f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066a7b8c8,1,fffffd80097fb4e0,ffff80002a2b7ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96f190,ffff80002a2b7ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b96f190,ffff80002a2b7ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b7ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b7ca8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b7ca8,ffff80003c45dd60,ffff80003c45dcb0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c45dd60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45dd60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bcac306df10, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff80000147a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a2b7ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c45d9f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066a7b8c8,1,fffffd80097fb4e0,ffff80002a2b7ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96f190,ffff80002a2b7ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96f190,ffff80002a2b7ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b96f190,ffff80002a2b7ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b7ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b7ca8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b7ca8,ffff80003c45dd60,ffff80003c45dcb0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c45dd60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45dd60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bcac306df10, count: -12