witness: lock order reversal: 1st 0xffffffff838b6e30 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff839c9658 &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 fdfree+0x116 sys/kern/kern_descrip.c:1195 #11 exit1+0x576 sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #14 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 sleep_finish+0x2d8 sys/kern/kern_synch.c:369 #4 sys_futex+0xb90 futex_wait sys/kern/sys_futex.c:306 [inline] #4 sys_futex+0xb90 sys/kern/sys_futex.c:155 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #6 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff839c9658,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839c9648) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffffffff838b6e80,220,ffffffff834360af) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffffffff838b6e80,ffffffff838b6e20,220,ffffffff834360af,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff80000159c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff8000fffe8a80) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe8a80) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000353d4260) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80637ef8c8,81,fffffd80097fd888,ffff8000fffe8a80) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f4680,ffff8000fffe8a80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f4680,ffff8000fffe8a80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f4680,ffff8000fffe8a80) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c7f4680,ffff8000fffe8a80) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8a80) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8a80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8a80,ffff8000353d45d0,ffff8000353d4520) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000353d45d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000353d45d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a3f30ebc730, count: -17 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000353d3f30 rbx 0 rdx 0 rcx 0xffff8000fffe8a80 rax 0xffff8000299ddff0 r8 0xffff8000353d3e10 r9 0x8080808080808080 r10 0x9f2d81713ef6728d r11 0xc04974684ca174c9 r12 0xfffffd8003f50e40 r13 0xfffffd800473ed58 r14 0x3 r15 0xffffffff834235ff substchar+0x6b98 rip 0xffffffff81132065 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000353d3f20 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=124795 pid=49528 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe8a80 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe87e8,0xffff8000fffe8560 process=0xffff8000fffe26a8 user=0xffff8000353cf000, vmspace=0xfffffd806c7d7d78 estcpu=28, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51437 231692 3282 0 7 0 syz-executor 51437 140595 3282 0 2 0x4000000 syz-executor 95875 249127 14158 0 3 0x80 nanoslp syz-executor 95875 326987 14158 0 3 0x4000080 pipewr syz-executor 95875 267204 14158 0 3 0x4000080 fsleep syz-executor 64639 239440 92480 0 3 0x3000 suspend syz-executor 64639 355674 92480 0 3 0x4081000 biowait syz-executor 64639 472658 92480 0 3 0x4081000 inode syz-executor 22652 468759 41448 0 3 0x2 biowait syz-executor 8617 227074 41448 0 3 0x82 nanoslp syz-executor 92358 447385 41448 0 3 0x82 wait syz-executor 64457 296584 41448 0 3 0x82 nanoslp syz-executor 92480 20388 41448 0 3 0x82 nanoslp syz-executor 44216 237486 41448 0 3 0x82 wait syz-executor 14158 434542 41448 0 3 0x82 nanoslp syz-executor 3282 429448 41448 0 3 0x82 nanoslp syz-executor 41448 142220 1439 0 3 0x82 kqread syz-executor 1439 517864 6979 0 3 0x10008a sigsusp ksh 6979 296851 37457 0 3 0x98 kqread sshd-session 37457 433236 14852 0 3 0x92 kqread sshd-session 21346 72844 1 0 3 0x100083 ttyin getty 14852 353003 1 0 3 0x88 kqread sshd 12190 506968 34386 74 3 0x1100092 bpf pflogd 34386 370175 1 0 3 0x80 sbwait pflogd 744 345520 19344 73 3 0x1100010 ffs_fsync syslogd 19344 329323 1 0 3 0x100082 sbwait syslogd 68161 318749 1 0 3 0x100080 kqread resolvd 5439 159416 73388 77 3 0x100092 kqread dhcpleased 46451 189566 73388 77 3 0x100092 kqread dhcpleased 73388 292650 1 0 3 0x80 kqread dhcpleased 75153 430661 0 0 3 0x14200 bored smr 1043 233265 0 0 2 0x14200 zerothread 7117 458486 0 0 3 0x14200 aiodoned aiodoned 49134 337589 0 0 3 0x14200 syncer update 93838 51282 0 0 3 0x14200 cleaner cleaner 83212 363721 0 0 3 0x14200 reaper reaper 18974 89257 0 0 3 0x14200 pgdaemon pagedaemon 25252 201358 0 0 3 0x14200 bored viomb 98824 308594 0 0 3 0x40014200 acpi0 acpi0 60213 122950 0 0 3 0x40014200 idle1 12391 433508 0 0 3 0x14200 bored softnet1 1467 370540 0 0 3 0x14200 bored softnet0 69851 306566 0 0 3 0x14200 bored systqmp 97025 335226 0 0 3 0x14200 bored systq 80717 103349 0 0 3 0x14200 tmoslp softclockmp 8750 358775 0 0 3 0x40014200 tmoslp softclock 64969 149966 0 0 3 0x40014200 idle0 1 202353 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &cq->cq_mtx r = 0 (0xffffffff838b6e30) #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 fdfree+0x116 sys/kern/kern_descrip.c:1195 #11 exit1+0x576 sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #14 Xsyscall+0x128 Process 64639 (syz-executor) thread 0xffff8000fffe9248 (355674) exclusive rrwlock inode r = 0 (0xfffffd806c62cb48) #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 64639 (syz-executor) thread 0xffff80002a261770 (472658) exclusive rrwlock inode r = 0 (0xfffffd806c62cec0) #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 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #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 Process 22652 (syz-executor) thread 0xffff80002a260fa8 (468759) exclusive rrwlock inode r = 0 (0xfffffd806c62c208) #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 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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cf79200) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 744 (syslogd) thread 0xffff80002a263c98 (345520) exclusive rrwlock inode r = 0 (0xfffffd806eca15a0) #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 sys_fsync+0x144 sys/kern/vfs_syscalls.c:2940 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11092 12110K 12170K 166960K 12268 0 pcb 17 13K 14K 166960K 73 0 rtable 251 9K 9K 166960K 383 0 pf 34 17K 18K 166960K 46 0 ifaddr 43 7K 7K 166960K 51 0 ifgroup 55 2K 2K 166960K 63 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1485 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1343 85K 85K 166960K 1423 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 210 0 proc 72 115K 164K 166960K 535 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 13 0 in_multi 99 7K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 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 399 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 259 159K 184K 166960K 3932 0 UVM aobj 3 2K 4K 166960K 4 0 pinsyscall 42 84K 100K 166960K 1379 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 12 0K 2K 166960K 32 0 temp 43 8671K 8735K 166960K 7440 0 kqueue 13 20K 24K 166960K 32 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 40 0 37 1 0 1 1 0 8 0 rtentry 176 112 0 1 6 0 6 6 0 8 0 unpcb 144 94 0 77 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 25 0 21 1 0 1 1 0 8 0 arp 136 19 0 0 1 0 1 1 0 8 0 inpcb 328 156 0 149 4 0 4 4 0 8 3 nd6 152 24 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 8 0 8 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 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 40 455 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1732 0 211 96 0 96 96 0 8 0 ffsino 296 1732 0 211 118 0 118 118 0 8 0 nchpl 144 2017 0 317 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 1841 0 0 103 0 103 103 0 8 0 namei 1024 6430 0 6428 2 0 2 2 0 8 1 percpumem 16 58 0 8 1 0 1 1 0 8 0 vmpool 848 1 0 1 1 0 1 1 0 8 1 kstatmem 264 34 0 8 3 0 3 3 0 8 1 scxspl 216 8906 0 8903 3 2 1 2 1 8 0 plimitpl 152 108 0 89 1 0 1 1 0 8 0 sigapl 424 551 0 504 8 0 8 8 0 8 1 knotepl 120 309 0 0 10 0 10 10 0 8 0 kqueuepl 224 47 0 38 1 0 1 1 0 8 0 pipepl 344 131 0 103 3 0 3 3 0 8 0 fdescpl 528 515 0 484 3 0 3 3 0 8 0 filepl 160 2111 0 1892 13 0 13 13 0 8 2 lockfpl 104 28 0 26 1 0 1 1 0 8 0 lockfspl 48 15 0 13 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 233 0 220 1 0 1 1 0 8 0 zombiepl 144 509 0 504 1 0 1 1 0 8 0 processpl 1232 551 0 504 6 0 6 6 0 8 1 procpl 664 694 0 642 7 0 7 7 0 8 0 sockpl 752 294 0 267 7 0 7 7 0 8 4 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 14 0 0 2 0 2 2 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 137 0 0 9 0 9 9 0 8 0 bufpl 280 3696 0 132 255 0 255 255 0 8 0 anonpl 32 7698 0 0 63 0 63 63 0 246 0 amapchunkpl 152 11588 0 11044 29 0 29 29 0 158 6 amappl16 200 2311 0 2017 16 0 16 16 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 433 0 432 1 0 1 1 0 8 0 amappl12 168 890 0 848 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 52 0 38 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 85 0 84 1 0 1 1 0 8 0 amappl6 120 284 0 271 1 0 1 1 0 8 0 amappl5 112 76 0 66 1 0 1 1 0 8 0 amappl4 104 430 0 401 1 0 1 1 0 8 0 amappl3 96 1767 0 1665 4 1 3 3 0 8 0 amappl2 88 642 0 567 2 0 2 2 0 8 0 amappl1 80 9843 0 9249 15 0 15 15 0 8 0 amappl 88 3157 0 2974 5 0 5 5 0 92 0 uvmvnodes 80 100 0 0 3 0 3 3 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 6 0 6 1 1 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 3 0 1 1 0 1 1 0 8 0 uaddrrnd 24 515 0 484 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 515 0 484 1 0 1 1 0 8 0 vmmpekpl 168 6187 0 6145 3 0 3 3 0 8 0 vmmpepl 168 41784 0 39576 98 0 98 98 0 357 0 vmsppl 488 514 0 484 5 0 5 5 0 8 0 rwobjpl 80 15148 0 13832 28 1 27 27 0 8 0 pdppl 4096 1039 0 970 97 24 73 81 0 8 4 pvpl 32 14874 0 0 121 1 120 120 0 265 0 pmappl 256 515 0 485 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 265 0 26 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff838b5ff0) 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+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 mtx_enter(ffffffff838b6e20) at mtx_enter+0x375 sys/kern/kern_lock.c:455 clockintr_dispatch(ffff800032bc7fa0) 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 end of kernel end trace frame: 0x799348f79070, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff839c9658,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839c9648) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffffffff838b6e80,220,ffffffff834360af) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffffffff838b6e80,ffffffff838b6e20,220,ffffffff834360af,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff80000159c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff8000fffe8a80) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe8a80) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000353d4260) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80637ef8c8,81,fffffd80097fd888,ffff8000fffe8a80) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f4680,ffff8000fffe8a80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f4680,ffff8000fffe8a80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f4680,ffff8000fffe8a80) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c7f4680,ffff8000fffe8a80) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8a80) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8a80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8a80,ffff8000353d45d0,ffff8000353d4520) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000353d45d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000353d45d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a3f30ebc730, count: -17