uvm_fault(0xfffffd806b7a4d78, 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 237727 13822 0 0x14000 0x200 0 reaper dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003942cd20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067482288,3,fffffd80097fb6e8,ffff80003c447788) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f3f0078,ffff80003c447788) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f3f0078,ffff80003c447788) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c447788) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c447788,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c447788,ffff80003942d090,ffff80003942cfe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003942d090) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003942d090) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71b352fba950, 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(0xfffffd806b7a4d78, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003942cd20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067482288,3,fffffd80097fb6e8,ffff80003c447788) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f3f0078,ffff80003c447788) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f3f0078,ffff80003c447788) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c447788) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c447788,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c447788,ffff80003942d090,ffff80003942cfe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003942d090) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003942d090) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71b352fba950, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003942cc50 rbx 0x1 rdx 0 rcx 0xffff80003c447788 rax 0xffffffff837c7a40 dt_prov_static r8 0x90 r9 0x1 r10 0xd9c2167cac84eeaa r11 0x729aa3a7bc8a1bee r12 0 r13 0 r14 0 r15 0xffff8000014eb800 rip 0xffffffff83041a38 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003942cc20 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=341794 pid=29354 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=64, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c447788 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4462c8,0xffff80003c446570 process=0xffff800035027040 user=0xffff800039428000, vmspace=0xfffffd806b7a4d78 estcpu=14, cpticks=17, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56228 315830 34416 0 2 0 syz-executor 56228 513856 34416 0 3 0x4000080 fsleep syz-executor 56228 443766 34416 0 3 0x4000080 fsleep syz-executor 56228 473650 34416 0 3 0x4000080 fsleep syz-executor 55792 334323 53909 0 2 0 syz-executor 55792 346686 53909 0 3 0x4000080 fsleep syz-executor 41556 200519 47117 0 2 0x10 syz-executor 41556 501567 47117 0 2 0x4000010 syz-executor 41556 434104 47117 0 3 0x4000090 fsleep syz-executor 41556 321711 47117 0 2 0x4000010 syz-executor 44470 84172 21377 0 2 0 syz-executor 44470 24907 21377 0 2 0x4000000 syz-executor 44470 308534 21377 0 3 0x4000080 fsleep syz-executor 44470 197149 21377 0 3 0x4000080 fsleep syz-executor 39536 123729 97200 0 3 0 vmmaplk syz-executor 39536 25680 97200 0 2 0x4000000 syz-executor 59619 411346 0 0 3 0x14200 bored sosplice 47217 378847 42736 0 3 0x82 nanoslp syz-executor 97200 471842 42736 0 2 0x2 syz-executor 21377 11455 42736 0 2 0x2 syz-executor 97823 307618 42736 0 2 0x2 syz-executor 97139 138086 42736 0 2 0x2 syz-executor 34416 322386 42736 0 2 0x3 syz-executor 53909 244997 42736 0 2 0x3 syz-executor 47117 520162 42736 0 2 0x3 syz-executor 42736 457280 63358 0 3 0x82 kqread syz-executor 63358 295874 66714 0 3 0x10008a sigsusp ksh 66714 341460 1489 0 3 0x98 kqread sshd-session 1489 341592 46595 0 3 0x92 kqread sshd-session 35907 471316 1 0 3 0x100083 ttyin getty 46595 86805 1 0 3 0x88 kqread sshd 31918 85033 74657 74 3 0x1100092 bpf pflogd 74657 210759 1 0 3 0x80 sbwait pflogd 94501 182248 96487 73 3 0x1100090 kqread syslogd 96487 246754 1 0 3 0x100082 sbwait syslogd 73012 421048 1 0 3 0x100080 kqread resolvd 50131 330221 82730 77 3 0x100092 kqread dhcpleased 74390 37521 82730 77 3 0x100092 kqread dhcpleased 82730 180128 1 0 3 0x80 kqread dhcpleased 34656 475185 0 0 3 0x14200 bored smr 98261 315782 0 0 2 0x14200 zerothread 99932 469899 0 0 3 0x14200 aiodoned aiodoned 45737 144130 0 0 3 0x14200 syncer update 77431 478951 0 0 3 0x14200 cleaner cleaner 13822 237727 0 0 7 0x14200 reaper 2346 248407 0 0 3 0x14200 pgdaemon pagedaemon 65324 470078 0 0 3 0x14200 bored viomb 90818 466035 0 0 3 0x40014200 acpi0 acpi0 53643 23089 0 0 3 0x40014200 idle1 5932 52209 0 0 3 0x14200 bored softnet7 733 242498 0 0 3 0x14200 bored softnet6 52928 400003 0 0 3 0x14200 bored softnet5 59751 245198 0 0 3 0x14200 bored softnet4 14487 326522 0 0 3 0x14200 bored softnet3 43546 113456 0 0 3 0x14200 bored softnet2 10679 372878 0 0 3 0x14200 bored softnet1 83808 3682 0 0 3 0x14200 bored softnet0 15409 165430 0 0 3 0x14200 bored systqmp 93207 361341 0 0 3 0x14200 bored systq 74082 318690 0 0 3 0x14200 tmoslp softclockmp 21710 10210 0 0 3 0x40014200 tmoslp softclock 62344 395550 0 0 3 0x40014200 idle0 1 123045 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 41556 (syz-executor) thread 0xffff80003a4342c0 (321711) exclusive rwlock vmmaplk r = 0 (0xfffffd806b7a4c90) #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 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #8 recall_trap+0x8 Process 39536 (syz-executor) thread 0xffff80003a435780 (25680) exclusive rwlock vmmaplk r = 0 (0xfffffd806b7a48c0) #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 uvm_map_pageable+0x183 sys/uvm/uvm_map.c:2214 #4 sys_mlock+0x23d sys/uvm/uvm_mmap.c:849 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 Process 97823 (syz-executor) thread 0xffff8000ffff2a70 (307618) exclusive rwlock vmmaplk r = 0 (0xfffffd806b7a4aa8) #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 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3738 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd800b027e58) #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 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3729 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 13822 (reaper) thread 0xffff8000ffffc2a0 (237727) exclusive rwlock kmmaplk r = 0 (0xffffffff8395f020) #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 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 11062K 11163K 166960K 11655 0 pcb 17 14K 17K 166960K 208 0 rtable 191 6K 8K 166960K 291 0 pf 34 17K 21K 166960K 71 0 ifaddr 43 7K 8K 166960K 58 0 ifgroup 55 2K 2K 166960K 75 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 220 0 ioctlops 0 0K 4K 166960K 1648 0 iov 0 0K 16K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1376 87K 87K 166960K 1523 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 334 0 sigio 0 0K 0K 166960K 3 0 proc 75 131K 164K 166960K 542 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 26 0 in_multi 99 7K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 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 386 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 244 177K 208K 166960K 4755 0 UVM aobj 10 2K 2K 166960K 13 0 pinsyscall 42 84K 108K 166960K 1417 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 18 0 NDP 12 0K 2K 166960K 35 0 temp 47 8644K 8710K 166960K 18640 0 kqueue 16 22K 30K 166960K 73 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 47 0 44 1 0 1 1 0 8 0 rtentry 176 102 0 17 5 0 5 5 0 8 0 unpcb 144 299 0 280 6 5 1 6 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 91 0 85 4 2 2 4 0 8 1 arp 128 11 0 0 1 0 1 1 0 8 0 inpcb 328 434 0 423 10 8 2 10 0 8 1 nd6 144 18 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 74 0 74 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 pfrktable 1344 7 0 7 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pfstitem 24 32 0 0 1 0 1 1 0 8 0 pfstkey 128 32 0 0 2 0 2 2 0 8 0 pfstate 384 32 0 0 4 0 4 4 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 501 0 120 31 5 26 31 0 8 0 art_table 40 502 0 120 6 0 6 6 0 8 0 art_node 32 102 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 2 1 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 10 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1945 0 435 96 1 95 96 0 8 0 ffsino 296 1945 0 435 117 0 117 117 0 8 0 nchpl 144 2420 0 730 63 0 63 63 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 2118 0 0 44 0 44 44 0 8 0 vnodes 216 2118 0 0 118 0 118 118 0 8 0 namei 1024 7696 0 7694 4 2 2 2 0 8 1 percpumem 16 125 0 76 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 40 0 14 3 0 3 3 0 8 1 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 11247 0 11247 6 2 4 4 1 8 4 plimitpl 152 82 0 65 1 0 1 1 0 8 0 sigapl 424 640 0 586 7 0 7 7 0 8 0 knotepl 120 519 0 0 16 0 16 16 0 8 0 kqueuepl 224 160 0 149 5 3 2 5 0 8 1 pipepl 344 118 0 91 3 0 3 3 0 8 0 fdescpl 528 615 0 584 3 0 3 3 0 8 0 filepl 160 3089 0 2869 16 6 10 16 0 8 0 lockfpl 104 102 0 98 1 0 1 1 0 8 0 lockfspl 48 34 0 30 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 243 0 228 1 0 1 1 0 8 0 zombiepl 144 614 0 613 1 0 1 1 0 8 0 processpl 1232 640 0 586 5 0 5 5 0 8 0 procpl 664 1022 0 957 7 0 7 7 0 8 1 sosppl 168 2 0 2 2 1 1 1 0 8 1 sockpl 752 803 0 770 18 13 5 18 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 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 155 0 0 11 1 10 10 0 8 0 bufpl 280 4907 0 125 342 0 342 342 0 8 0 anonpl 32 9129 0 0 74 0 74 74 0 246 0 amapchunkpl 152 14863 0 14349 42 17 25 36 0 158 5 amappl16 200 3068 0 3043 26 13 13 16 0 8 8 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 111 0 99 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1254 0 1224 4 1 3 3 0 8 0 amappl11 160 63 0 49 1 0 1 1 0 8 0 amappl10 152 34 0 34 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 36 0 34 1 0 1 1 0 8 0 amappl7 128 106 0 94 1 0 1 1 0 8 0 amappl6 120 197 0 194 1 0 1 1 0 8 0 amappl5 112 137 0 127 1 0 1 1 0 8 0 amappl4 104 324 0 305 1 0 1 1 0 8 0 amappl3 96 2573 0 2460 4 0 4 4 0 8 0 amappl2 88 635 0 573 2 0 2 2 0 8 0 amappl1 80 9120 0 8525 16 3 13 16 0 8 0 amappl 88 4051 0 3881 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 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 12 0 3 1 0 1 1 0 8 0 uaddrrnd 24 615 0 584 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 615 0 584 1 0 1 1 0 8 0 vmmpekpl 168 6678 0 6643 2 0 2 2 0 8 0 vmmpepl 168 46250 0 44291 100 6 94 100 0 357 2 vmsppl 488 614 0 584 5 1 4 5 0 8 0 rwobjpl 80 17892 0 14834 67 0 67 67 0 8 0 pdppl 4096 1238 0 1168 100 28 72 86 0 8 2 pvpl 32 15809 0 0 129 1 128 129 0 265 0 pmappl 256 614 0 584 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 278 0 42 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837d8ff0) 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_const_cmp4(ffffffff837afde0,ffffffff837afde0) at __sanitizer_cov_trace_const_cmp4+0x4 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_const_cmp4(ffffffff837afde0,ffffffff837afde0) at __sanitizer_cov_trace_const_cmp4+0x4 sys/dev/kcov.c:230 msleep_nsec(ffffffff837afe18,ffffffff837afde0,4,ffffffff83381a6d,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff837d8ff0) 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_const_cmp4(ffffffff837afde0,ffffffff837afde0) at __sanitizer_cov_trace_const_cmp4+0x4 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_const_cmp4(ffffffff837afde0,ffffffff837afde0) at __sanitizer_cov_trace_const_cmp4+0x4 sys/dev/kcov.c:230 msleep_nsec(ffffffff837afe18,ffffffff837afde0,4,ffffffff83381a6d,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc2a0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003942cd20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067482288,3,fffffd80097fb6e8,ffff80003c447788) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f3f0078,ffff80003c447788) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f3f0078,ffff80003c447788) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c447788) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c447788,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c447788,ffff80003942d090,ffff80003942cfe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003942d090) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003942d090) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71b352fba950, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001487000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003c447788) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003942cd20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067482288,3,fffffd80097fb6e8,ffff80003c447788) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f3f0078,ffff80003c447788) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f3f0078,ffff80003c447788) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f3f0078,ffff80003c447788) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c447788) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c447788,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c447788,ffff80003942d090,ffff80003942cfe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003942d090) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003942d090) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71b352fba950, count: -12