uvm_fault(0xfffffd806c148d40, 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 237139 28483 0 0x14000 0x200 0 reaper 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(ffff80000157d030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000153d000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002ebdcf70) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805dea13c0,41,fffffd80097fb4e0,ffff80002a2979c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf84d70,ffff80002a2979c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf84d70,ffff80002a2979c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2979c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2979c0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2979c0,ffff80002ebdd2e0,ffff80002ebdd230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebdd2e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebdd2e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:732 end trace frame: 0xffff80002ebdd360, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c148d40, 0x48, 0, 1) -> e ddb{1}> 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(ffff80000157d030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000153d000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002ebdcf70) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805dea13c0,41,fffffd80097fb4e0,ffff80002a2979c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf84d70,ffff80002a2979c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf84d70,ffff80002a2979c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2979c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2979c0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2979c0,ffff80002ebdd2e0,ffff80002ebdd230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebdd2e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebdd2e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:732 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x773cd49abe40, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ebdcdd0 rbx 0 rdx 0 rcx 0xffff80002a2979c0 rax 0xffff8000299ddff0 r8 0x90 r9 0x1 r10 0xf1309fae824c72a7 r11 0x8eb6e6925259448b r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff81a3dbe9 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002ebdcd20 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{1}> show proc PROC (syz-executor) tid=163176 pid=13814 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2979c0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2974a0,0xffff80002a296030 process=0xffff8000387fabb8 user=0xffff80002ebd8000, vmspace=0xfffffd806c148d40 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76235 127462 36473 0 2 0 syz-executor 76235 396371 36473 0 3 0x4000080 semwait syz-executor 78810 104489 59138 0 2 0 syz-executor 78810 255502 59138 0 3 0x4000080 fsleep syz-executor 10224 155776 39048 0 2 0 syz-executor 10224 225567 39048 0 3 0x4000000 biowait syz-executor 10224 452277 39048 0 3 0x4000000 inode syz-executor 63256 41056 17376 0 3 0x80 nanoslp syz-executor 63256 328294 17376 0 3 0x4000080 kqsel syz-executor 63256 199052 17376 0 3 0x4000080 fsleep syz-executor 21259 425291 96819 0 3 0x80 nanoslp syz-executor 21259 84812 96819 0 3 0x4000080 sbwait syz-executor 21259 198336 96819 0 3 0x4000080 fsleep syz-executor 16826 174521 0 0 3 0x14200 bored sosplice 42032 143472 11455 0 3 0x100082 sbwait arp 11455 511761 8330 0 3 0x10008a sigsusp sh 27532 425873 41796 0 3 0x82 wait syz-executor 39048 312244 41796 0 3 0x82 nanoslp syz-executor 96819 355785 41796 0 3 0x82 nanoslp syz-executor 17376 457757 41796 0 3 0x82 nanoslp syz-executor 82587 277194 41796 0 3 0x82 nanoslp syz-executor 8330 49683 41796 0 3 0x82 wait syz-executor 36473 67020 41796 0 3 0x82 nanoslp syz-executor 59138 147171 41796 0 3 0x82 nanoslp syz-executor 41796 36926 13164 0 3 0x82 kqread syz-executor 13164 178157 20036 0 3 0x10008a sigsusp ksh 20036 367117 78532 0 3 0x98 kqread sshd-session 78532 515658 31946 0 3 0x92 kqread sshd-session 54115 350983 1 0 3 0x100083 ttyin getty 31946 237880 1 0 3 0x88 kqread sshd 5060 70667 394 74 3 0x1100092 bpf pflogd 394 201090 1 0 3 0x80 sbwait pflogd 68615 238941 94355 73 3 0x1100090 kqread syslogd 94355 241588 1 0 3 0x100082 sbwait syslogd 92981 151772 1 0 3 0x100080 kqread resolvd 26527 494671 24017 77 3 0x100092 kqread dhcpleased 23184 112328 24017 77 3 0x100092 kqread dhcpleased 24017 133672 1 0 3 0x80 kqread dhcpleased 31369 413118 0 0 3 0x14200 bored smr 32118 21686 0 0 2 0x14200 zerothread 29912 470178 0 0 3 0x14200 aiodoned aiodoned 29324 44736 0 0 3 0x14200 syncer update 33434 96770 0 0 3 0x14200 cleaner cleaner 28483 237139 0 0 7 0x14200 reaper 2209 276992 0 0 3 0x14200 pgdaemon pagedaemon 56396 214881 0 0 3 0x14200 bored viomb 12877 54581 0 0 3 0x40014200 acpi0 acpi0 71013 409238 0 0 3 0x40014200 idle1 65278 433526 0 0 3 0x14200 bored softnet3 73635 92815 0 0 3 0x14200 bored softnet2 17553 165787 0 0 3 0x14200 bored softnet1 25941 185421 0 0 3 0x14200 bored softnet0 77461 345733 0 0 3 0x14200 bored systqmp 12466 500450 0 0 3 0x14200 bored systq 14131 321506 0 0 3 0x14200 tmoslp softclockmp 80390 4328 0 0 3 0x40014200 tmoslp softclock 5927 405981 0 0 3 0x40014200 idle0 1 108036 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 10224 (syz-executor) thread 0xffff800031fe9c58 (225567) exclusive rrwlock inode r = 0 (0xfffffd806e99be30) #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 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:732 #9 Xsyscall+0x128 Process 10224 (syz-executor) thread 0xffff800031fe82b8 (452277) exclusive rrwlock inode r = 0 (0xfffffd80664f7e20) #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:732 #9 Xsyscall+0x128 Process 28483 (reaper) thread 0xffff8000ffffccd8 (237139) exclusive rwlock kmmaplk r = 0 (0xffffffff839cbf98) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_unmap+0x81 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:285 #6 reaper+0x1cb sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11087K 11562K 166960K 11962 0 pcb 17 12K 12K 166960K 68 0 rtable 183 6K 6K 166960K 419 0 pf 33 17K 82K 166960K 62 0 ifaddr 36 6K 7K 166960K 52 0 ifgroup 51 2K 2K 166960K 70 0 sysctl 3 1K 9K 166960K 10 0 counters 66 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1529 0 iov 0 0K 16K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1390 87K 88K 166960K 1669 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 11 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 93K 166960K 403 0 sigio 0 0K 0K 166960K 9 0 proc 72 91K 115K 166960K 552 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 212 0 in_multi 75 5K 6K 166960K 95 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 396 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 266 162K 170K 166960K 5389 0 UVM aobj 11 2K 2K 166960K 11 0 pinsyscall 45 90K 104K 166960K 1482 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 11 0K 1K 166960K 32 0 temp 53 8689K 8757K 166960K 20632 0 kqueue 13 20K 30K 166960K 77 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 49 0 45 1 0 1 1 0 8 0 rtentry 176 110 0 28 5 0 5 5 0 8 0 unpcb 144 179 0 154 2 0 2 2 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 69 0 63 1 0 1 1 0 8 0 arp 128 18 0 3 1 0 1 1 0 8 0 inpcb 328 306 0 297 4 0 4 4 0 8 2 nd6 144 23 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 12 0 12 2 1 1 1 0 8 1 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 6 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 8 0 2 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 34 0 1 1 0 1 1 0 8 0 pfstkey 128 36 0 3 2 0 2 2 0 8 0 pfstate 384 34 0 2 4 0 4 4 0 8 0 pfrule 1344 22 0 17 2 1 1 2 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 256 423 0 93 27 2 25 27 0 8 1 art_table 32 424 0 93 4 0 4 4 0 8 0 art_node 16 109 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2097 0 589 95 0 95 95 0 8 0 ffsino 288 2097 0 589 109 0 109 109 0 8 0 nchpl 144 2683 0 986 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2381 0 0 49 0 49 49 0 8 0 vnodes 216 2381 0 0 133 0 133 133 0 8 0 namei 1024 8832 0 8831 3 2 1 2 0 8 0 percpumem 16 62 0 14 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 13918 0 13917 10 8 2 8 1 8 1 plimitpl 152 55 0 37 1 0 1 1 0 8 0 sigapl 424 706 0 654 7 0 7 7 0 8 0 knotepl 120 318 0 0 10 0 10 10 0 8 0 kqueuepl 224 208 0 196 5 3 2 5 0 8 0 pipepl 336 133 0 105 3 0 3 3 0 8 0 fdescpl 520 686 0 653 3 0 3 3 0 8 0 filepl 160 3548 0 3308 15 2 13 13 0 8 2 lockfpl 104 126 0 124 1 0 1 1 0 8 0 lockfspl 48 62 0 60 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 251 0 237 1 0 1 1 0 8 0 zombiepl 144 656 0 654 1 0 1 1 0 8 0 processpl 1240 706 0 654 5 0 5 5 0 8 0 procpl 656 1241 0 1181 6 0 6 6 0 8 0 srpgc 96 6 0 6 2 1 1 1 0 8 1 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 728 539 0 501 7 0 7 7 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 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 31 0 0 4 0 4 4 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 235 0 0 15 0 15 15 0 8 0 bufpl 280 5454 0 122 381 0 381 381 0 8 0 anonpl 32 11396 0 0 92 0 92 92 0 246 0 amapchunkpl 152 17126 0 16550 32 3 29 29 0 158 6 amappl16 200 2986 0 2941 27 10 17 25 0 8 8 amappl15 192 39 0 39 1 1 0 1 0 8 0 amappl14 184 111 0 97 1 0 1 1 0 8 0 amappl13 176 13 0 13 2 2 0 1 0 8 0 amappl12 168 1324 0 1290 4 2 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 9 0 9 2 2 0 1 0 8 0 amappl9 144 245 0 245 1 1 0 1 0 8 0 amappl8 136 44 0 41 1 0 1 1 0 8 0 amappl7 128 108 0 95 1 0 1 1 0 8 0 amappl6 120 175 0 170 1 0 1 1 0 8 0 amappl5 112 140 0 130 1 0 1 1 0 8 0 amappl4 104 324 0 304 1 0 1 1 0 8 0 amappl3 96 3125 0 2999 5 1 4 4 0 8 0 amappl2 88 630 0 563 2 0 2 2 0 8 0 amappl1 80 9221 0 8586 15 1 14 15 0 8 1 amappl 88 4681 0 4493 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 7 0 7 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 687 0 654 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 687 0 654 1 0 1 1 0 8 0 vmmpekpl 168 7175 0 7134 3 0 3 3 0 8 0 vmmpepl 168 50144 0 48025 112 1 111 111 0 357 10 vmsppl 480 686 0 654 5 0 5 5 0 8 0 rwobjpl 72 18648 0 15232 67 0 67 67 0 8 2 pdppl 4096 1382 0 1308 100 26 74 86 0 8 0 pvpl 32 18722 0 0 151 0 151 151 0 265 0 pmappl 256 686 0 654 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 387 0 34 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837f3ff0) 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(ffffffff839c40b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c40b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a240a40,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffffffff8383ec08,ffffffff8383ebd0) at __sanitizer_cov_trace_const_cmp4+0x4 sys/dev/kcov.c:229 reaper(ffff8000ffffccd8) at reaper+0x14b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff837f3ff0) 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(ffffffff839c40b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c40b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a240a40,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffffffff8383ec08,ffffffff8383ebd0) at __sanitizer_cov_trace_const_cmp4+0x4 sys/dev/kcov.c:229 reaper(ffff8000ffffccd8) at reaper+0x14b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d 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(ffff80000157d030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000153d000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002ebdcf70) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805dea13c0,41,fffffd80097fb4e0,ffff80002a2979c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf84d70,ffff80002a2979c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf84d70,ffff80002a2979c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2979c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2979c0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2979c0,ffff80002ebdd2e0,ffff80002ebdd230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebdd2e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebdd2e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:732 end trace frame: 0xffff80002ebdd360, count: 0 ddb{1}> 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(ffff80000157d030,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000153d000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,41,2000,ffff80002a2979c0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002ebdcf70) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805dea13c0,41,fffffd80097fb4e0,ffff80002a2979c0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf84d70,ffff80002a2979c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf84d70,ffff80002a2979c0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf84d70,ffff80002a2979c0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2979c0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2979c0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2979c0,ffff80002ebdd2e0,ffff80002ebdd230) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebdd2e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebdd2e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:732 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x773cd49abe40, count: -15