witness: lock order reversal: 1st 0xffff8000299dee30 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff839d5cf0 &sched_lock (&sched_lock) lock order [1] &cq->cq_mtx (&cq->cq_mtx) -> [2] &sched_lock (&sched_lock) #0 mtx_enter+0x95 sys/kern/kern_lock.c:406 #1 sleep_setup+0xed sys/kern/kern_synch.c:304 #2 msleep_nsec+0x10b sys/kern/kern_synch.c:217 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 #4 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #5 spec_close+0x466 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 lock order [2] &sched_lock (&sched_lock) -> [1] &cq->cq_mtx (&cq->cq_mtx) #0 mtx_enter+0x95 sys/kern/kern_lock.c:406 #1 clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 #2 mi_switch+0x187 sys/kern/sched_bsd.c:376 #3 ast+0x15a mi_ast sys/sys/syscall_mi.h:252 [inline] #3 ast+0x15a sys/arch/amd64/amd64/trap.c:739 #4 intr_user_exit+0x3c Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff839d5cf0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839d5ce0) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffff8000299dee80,220,ffffffff83432cf3) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffff8000299dee80,ffff8000299dee20,220,ffffffff83432cf3,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001644000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,81,2000,ffff8000fffe7a18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffe7a18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4c4d00) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800b957dc8,81,fffffd80097fd410,ffff8000fffe7a18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064b22e60,ffff8000fffe7a18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064b22e60,ffff8000fffe7a18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064b22e60,ffff8000fffe7a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064b22e60,ffff8000fffe7a18) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80003c4c4f60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4c4f60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcc462a58e10, count: -14 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c4c49d0 rbx 0 rdx 0xffff8000015f7340 rcx 0xffff8000fffe7a18 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c4c48b0 r9 0x8080808080808080 r10 0xfee4808526a6165c r11 0xbc07ee17630d1d4a r12 0xfffffd8003f55e40 r13 0xfffffd8004700330 r14 0x3 r15 0xffffffff834249fa substchar+0x129b5 rip 0xffffffff8124bc15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4c49c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=414543 pid=77058 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000383e02d0,0xffff8000fffe6568 process=0xffff8000383dc020 user=0xffff80003c4c0000, vmspace=0xfffffd805f20cb98 estcpu=33, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52112 496749 42068 0 2 0 syz-executor 52112 7144 42068 0 3 0x4000080 fsleep syz-executor 98239 64130 57435 0 2 0 syz-executor 98239 511171 57435 0 3 0x4000080 fsleep syz-executor 90767 169452 93516 0 2 0 syz-executor 90767 230198 93516 0 3 0x4000080 fsleep syz-executor 82707 119813 50673 0 2 0 syz-executor 82707 95623 50673 0 3 0x4000080 ttyretype syz-executor 77058 16803 14100 0 2 0 syz-executor *77058 414543 14100 0 7 0x4000000 syz-executor 72657 414455 98173 0 2 0 syz-executor 72657 416554 98173 0 3 0x4000080 fsleep syz-executor 72657 234074 98173 0 3 0x4000080 fsleep syz-executor 40162 518054 92435 0 2 0x10 syz-executor 40162 516047 92435 0 3 0x4000090 kqread syz-executor 40162 333328 92435 0 3 0x4000090 fsleep syz-executor 725 1369 0 0 3 0x14200 acct acct 34166 99706 57914 0 3 0x82 wait syz-executor 50673 476219 57914 0 3 0x82 nanoslp syz-executor 42068 217222 57914 0 3 0x82 nanoslp syz-executor 14100 383123 57914 0 3 0x82 nanoslp syz-executor 29894 126556 1 0 3 0x100083 ttyin getty 9142 166131 0 0 3 0x14280 nfsidl nfsio 43302 88304 0 0 3 0x14280 nfsidl nfsio 49445 141808 0 0 3 0x14280 nfsidl nfsio 90319 217034 0 0 3 0x14280 nfsidl nfsio 14376 235712 0 0 3 0x14280 nfsidl nfsio 28614 467193 0 0 3 0x14280 nfsidl nfsio 5538 6071 0 0 3 0x14280 nfsidl nfsio 45176 12100 0 0 3 0x14280 nfsidl nfsio 60148 117415 0 0 3 0x14280 nfsidl nfsio 79442 237025 0 0 3 0x14280 nfsidl nfsio 16305 438829 0 0 3 0x14280 nfsidl nfsio 76289 267796 0 0 3 0x14280 nfsidl nfsio 67299 137995 0 0 3 0x14280 nfsidl nfsio 59365 48904 0 0 3 0x14280 nfsidl nfsio 45397 439768 0 0 3 0x14280 nfsidl nfsio 44976 163892 0 0 3 0x14280 nfsidl nfsio 90893 72363 0 0 3 0x14280 nfsidl nfsio 59078 7381 0 0 3 0x14280 nfsidl nfsio 50316 355589 0 0 3 0x14280 nfsidl nfsio 3383 154511 0 0 3 0x14280 nfsidl nfsio 92435 315823 57914 0 3 0x82 nanoslp syz-executor 93516 393636 57914 0 3 0x82 nanoslp syz-executor 98173 399176 57914 0 3 0x82 nanoslp syz-executor 57435 445297 57914 0 3 0x82 nanoslp syz-executor 57914 481357 69501 0 3 0x82 kqread syz-executor 69501 169837 51894 0 3 0x10008a sigsusp ksh 51894 277498 2416 0 3 0x98 kqread sshd-session 2416 300200 72985 0 3 0x92 kqread sshd-session 72985 41019 1 0 3 0x88 kqread sshd 2284 450097 82576 74 3 0x1100092 bpf pflogd 82576 206736 1 0 3 0x80 sbwait pflogd 49065 336841 44496 73 3 0x1100090 kqread syslogd 44496 483015 1 0 3 0x100082 sbwait syslogd 42689 159641 1 0 3 0x100080 kqread resolvd 65187 323644 73385 77 3 0x100092 kqread dhcpleased 56098 517104 73385 77 3 0x100092 kqread dhcpleased 73385 392832 1 0 3 0x80 kqread dhcpleased 62633 129334 0 0 3 0x14200 bored smr 23928 266218 0 0 2 0x14200 zerothread 21532 365704 0 0 3 0x14200 aiodoned aiodoned 11773 177439 0 0 3 0x14200 syncer update 39782 523064 0 0 3 0x14200 cleaner cleaner 36359 163661 0 0 3 0x14200 reaper reaper 58587 155864 0 0 3 0x14200 pgdaemon pagedaemon 56036 208918 0 0 3 0x14200 bored viomb 85145 8554 0 0 3 0x40014200 acpi0 acpi0 50355 258202 0 0 7 0x40014200 idle1 88587 221768 0 0 3 0x14200 bored softnet1 85713 259385 0 0 3 0x14200 bored softnet0 44547 389444 0 0 3 0x14200 bored systqmp 36452 447473 0 0 3 0x14200 bored systq 32644 375826 0 0 3 0x14200 tmoslp softclockmp 72558 318831 0 0 3 0x40014200 tmoslp softclock 99177 298855 0 0 3 0x40014200 idle0 1 420413 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &cq->cq_mtx r = 0 (0xffff8000299dee30) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 #4 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #5 spec_close+0x466 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 Process 77058 (syz-executor) thread 0xffff8000fffe7a18 (414543) exclusive rwlock dtlk r = 0 (0xffffffff8380bbc8) #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 dt_ioctl_record_stop+0x2e sys/dev/dt/dt_dev.c:572 #3 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #3 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #4 spec_close+0x466 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 closef+0x192 sys/kern/kern_descrip.c:1264 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83903fc0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x121 sys/kern/kern_descrip.c:1280 #3 closef+0x192 sys/kern/kern_descrip.c:1264 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #5 Xsyscall+0x128 exclusive mutex &cq->cq_mtx r = 0 (0xffff8000299dee30) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 #4 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #5 spec_close+0x466 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11083 12153K 13158K 166960K 13753 0 pcb 20 16K 18K 166960K 506 0 rtable 228 10K 11K 166960K 661 0 pf 37 18K 82K 166960K 173 0 ifaddr 45 8K 8K 166960K 139 0 ifgroup 59 2K 2K 166960K 220 0 sysctl 4 1K 9K 166960K 15 0 counters 72 37K 38K 166960K 238 0 ioctlops 0 0K 4K 166960K 1946 0 iov 0 0K 24K 166960K 134 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1491 94K 94K 166960K 2685 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 61 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1386 0 sigio 0 0K 0K 166960K 31 0 proc 74 115K 164K 166960K 800 0 subproc 72 4K 4K 166960K 119 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 140 0 in_multi 92 6K 7K 166960K 210 0 ether_multi 1 0K 0K 166960K 11 0 mrt 2 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 587 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 161K 175K 166960K 14499 0 UVM aobj 40 16K 16K 166960K 47 0 pinsyscall 43 86K 104K 166960K 2659 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 104 0 NDP 13 0K 1K 166960K 98 0 temp 78 8684K 8764K 166960K 61808 0 kqueue 13 20K 30K 166960K 278 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 120 130 0 127 1 0 1 1 0 8 0 rtentry 176 196 0 104 6 1 5 6 0 8 0 unpcb 144 987 0 968 14 12 2 6 0 8 1 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpcb 736 366 0 362 4 3 1 4 0 8 0 arp 136 30 0 12 1 0 1 1 0 8 0 inpcb 328 1616 0 1606 17 10 7 7 0 8 6 nd6 152 43 0 22 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 3 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 64 0 64 2 1 1 1 0 8 1 pppxif 1504 6 0 6 4 3 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 13 0 3 2 1 1 1 0 482 0 pffrnode 88 13 0 3 2 1 1 1 0 8 0 pffrent 40 19 0 9 2 1 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 6 0 6 4 3 1 1 0 8 1 pfstitem 24 3 0 0 1 0 1 1 0 8 0 pfstkey 128 7 0 4 1 0 1 1 0 8 0 pfstate 448 4 0 2 1 0 1 1 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 878 0 505 33 8 25 31 0 8 0 art_table 40 881 0 505 5 0 5 5 0 8 0 art_node 32 196 0 116 1 0 1 1 0 8 0 sysvmsgpl 40 85 0 74 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 54 0 44 1 0 1 1 0 8 0 shmpl 112 33 0 3 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 4008 0 2499 96 0 96 96 0 8 0 ffsino 296 4008 0 2499 118 1 117 118 0 8 0 nchpl 144 5890 0 4180 64 0 64 64 0 8 0 rtmask 32 14 0 14 3 2 1 1 0 8 1 vnodes 216 4846 0 0 270 0 270 270 0 8 0 namei 1024 20550 0 20550 3 2 1 2 0 8 1 percpumem 16 134 0 83 1 0 1 1 0 8 0 vcpupl 3968 7 0 0 1 0 1 1 0 8 0 vmpool 848 10 0 3 1 0 1 1 0 8 0 kstatmem 264 144 0 114 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 7 0 7 4 4 0 1 0 8 0 scxspl 216 35549 0 35549 11 8 3 8 1 8 3 plimitpl 152 462 0 444 1 0 1 1 0 8 0 sigapl 424 1712 0 1643 8 0 8 8 0 8 0 knotepl 120 744 0 0 23 0 23 23 0 8 0 kqueuepl 224 560 0 549 5 4 1 5 0 8 0 pipepl 344 235 0 208 3 0 3 3 0 8 0 fdescpl 528 1672 0 1640 3 0 3 3 0 8 0 filepl 160 10437 0 10214 21 8 13 18 0 8 0 lockfpl 104 521 0 519 2 1 1 2 0 8 0 lockfspl 48 204 0 202 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 104 1553 0 1539 1 0 1 1 0 8 0 zombiepl 144 2412 0 2411 2 1 1 1 0 8 0 processpl 1232 1712 0 1643 6 0 6 6 0 8 0 procpl 664 3913 0 3835 8 0 8 8 0 8 0 sosppl 176 10 0 10 2 1 1 1 0 8 1 sockpl 752 2784 0 2752 31 20 11 17 0 8 7 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1062 0 0 66 0 66 66 0 8 0 bufpl 280 14019 0 7883 439 0 439 439 0 8 0 anonpl 32 13741 0 0 111 0 111 111 0 246 0 amapchunkpl 152 48537 0 48025 44 18 26 34 0 158 4 amappl16 200 5345 0 5309 40 29 11 31 0 8 3 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 19 0 19 2 2 0 1 0 8 0 amappl13 176 494 0 493 1 0 1 1 0 8 0 amappl12 168 2079 0 2036 4 2 2 3 0 8 0 amappl11 160 21 0 21 2 2 0 1 0 8 0 amappl10 152 46 0 32 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 99 0 98 1 0 1 1 0 8 0 amappl6 120 355 0 341 1 0 1 1 0 8 0 amappl5 112 76 0 65 1 0 1 1 0 8 0 amappl4 104 496 0 465 1 0 1 1 0 8 0 amappl3 96 8618 0 8518 4 1 3 3 0 8 0 amappl2 88 1796 0 1716 2 0 2 2 0 8 0 amappl1 80 15397 0 14804 16 2 14 14 0 8 0 amappl 88 13443 0 13273 5 0 5 5 0 92 0 uvmvnodes 80 165 0 0 4 0 4 4 0 8 0 dma65536 65536 3 0 3 2 2 0 1 0 8 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 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 46 0 7 1 0 1 1 0 8 0 uaddrrnd 24 1672 0 1640 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1672 0 1640 1 0 1 1 0 8 0 vmmpekpl 168 14491 0 14434 3 0 3 3 0 8 0 vmmpepl 168 112261 0 110275 118 16 102 112 0 357 6 vmsppl 488 1671 0 1640 6 1 5 5 0 8 0 rwobjpl 80 31805 0 30660 36 3 33 35 0 8 0 pdppl 4096 3371 0 3293 124 46 78 85 0 8 0 pvpl 32 23376 0 0 191 2 189 189 0 265 0 pmappl 256 1681 0 1643 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 369 0 68 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff839d5cf0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839d5ce0) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffff8000299dee80,220,ffffffff83432cf3) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffff8000299dee80,ffff8000299dee20,220,ffffffff83432cf3,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001644000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(21e5f,81,2000,ffff8000fffe7a18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffe7a18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4c4d00) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800b957dc8,81,fffffd80097fd410,ffff8000fffe7a18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064b22e60,ffff8000fffe7a18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064b22e60,ffff8000fffe7a18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064b22e60,ffff8000fffe7a18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064b22e60,ffff8000fffe7a18) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80003c4c4f60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4c4f60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcc462a58e10, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc clockintr_dispatch(ffff80002a21c770) at clockintr_dispatch+0x401 sys/kern/kern_clockintr.c:215 lapic_clockintr(0,0) at lapic_clockintr+0x51 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -9