witness: lock order reversal: 1st 0xffff8000299eee08 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff83969ef8 &sched_lock (&sched_lock) lock order [1] &cq->cq_mtx (&cq->cq_mtx) -> [2] &sched_lock (&sched_lock) #0 mtx_enter+0x4a sys/kern/kern_lock.c:260 #1 sleep_setup+0xc6 sys/kern/kern_synch.c:302 #2 msleep_nsec+0x10b sys/kern/kern_synch.c:217 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 #4 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x109 sys/dev/dt/dt_dev.c:232 #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:748 #14 Xsyscall+0x128 lock order [2] &sched_lock (&sched_lock) -> [1] &cq->cq_mtx (&cq->cq_mtx) #0 mtx_enter+0x4a sys/kern/kern_lock.c:260 #1 clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 #2 mi_switch+0x16f sys/kern/sched_bsd.c:378 #3 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #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:748 #6 Xsyscall+0x128 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(ffffffff83969ef8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff83969ee8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffff8000299eee58,220,ffffffff833eed36) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffff8000299eee58,ffff8000299eedf8,220,ffffffff833eed36,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff8000016d6000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(21e5f,81,2000,ffff80003ac282c0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003ac282c0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3cd920) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800e3bfe98,81,fffffd80097fb4e0,ffff80003ac282c0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b9b4718,ffff80003ac282c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b9b4718,ffff80003ac282c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b9b4718,ffff80003ac282c0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b9b4718,ffff80003ac282c0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003ac282c0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003ac282c0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003ac282c0,ffff80002a3cdc90,ffff80002a3cdbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3cdc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3cdc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d992843130, count: -17 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3cd630 rbx 0 rdx 0 rcx 0xffff80003ac282c0 rax 0xffffffff83810ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002a3cd510 r9 0x8080808080808080 r10 0x65e16f34eae5d1a5 r11 0xa5a1cf18122a9eb6 r12 0xfffffd8003efbdc0 r13 0xfffffd80046a6330 r14 0x3 r15 0xffffffff833d90b0 substchar+0x1f62 rip 0xffffffff811a29e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3cd620 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=363335 pid=67488 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003ac282c0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003ac28558,0xffff80003ac322d8 process=0xffff80002a2a79d0 user=0xffff80002a3c8000, vmspace=0xfffffd806f086d60 estcpu=36, cpticks=5, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48302 306565 12972 0 2 0 syz-executor 48302 9326 12972 0 3 0x4000080 fsleep syz-executor 30979 309575 40656 60928 2 0x10 syz-executor 30979 404229 40656 60928 3 0x4000090 ttyin syz-executor 30979 69281 40656 60928 3 0x4000010 inode syz-executor 30979 99016 40656 60928 3 0x4000010 inode syz-executor 12654 466975 0 0 3 0x14200 acct acct 75343 253364 30814 0 3 0x3000 suspend syz-executor 75343 31085 30814 0 3 0x4081000 biowait syz-executor 67341 462161 81139 0 2 0x10000003 syz-executor 72281 144824 81139 0 3 0x82 nanoslp syz-executor 30814 258336 81139 0 3 0x82 wait syz-executor 53751 301316 81139 0 3 0x82 nanoslp syz-executor 29675 91796 0 0 3 0x14200 bored sosplice 14130 276842 1 0 3 0x100083 ttyopn getty 80355 492611 81139 0 3 0x82 nanoslp syz-executor 40656 211460 81139 0 3 0x82 nanoslp syz-executor 99840 301563 81139 0 3 0x82 wait syz-executor 12972 328261 81139 0 3 0x82 nanoslp syz-executor 81139 379712 34310 0 3 0x82 kqread syz-executor 34310 120684 85875 0 3 0x10008a sigsusp ksh 85875 282870 64125 0 3 0x98 kqread sshd-session 64125 15313 59819 0 3 0x92 kqread sshd-session 59819 283757 1 0 3 0x88 kqread sshd 39116 397489 3210 74 3 0x1100092 bpf pflogd 3210 467323 1 0 3 0x80 sbwait pflogd 22598 171224 44221 73 3 0x1100090 kqread syslogd 44221 426284 1 0 3 0x100082 sbwait syslogd 70881 62525 1 0 3 0x100080 kqread resolvd 65267 510378 25956 77 3 0x100092 kqread dhcpleased 44125 210241 25956 77 3 0x100092 kqread dhcpleased 25956 440925 1 0 3 0x80 kqread dhcpleased 36772 108965 0 0 3 0x14200 bored smr 49749 2294 0 0 2 0x14200 zerothread 29127 503530 0 0 3 0x14200 aiodoned aiodoned 54334 120421 0 0 3 0x14200 syncer update 81416 272778 0 0 3 0x14200 cleaner cleaner 13063 346032 0 0 3 0x14200 kmmaplk reaper 41400 466716 0 0 3 0x14200 pgdaemon pagedaemon 57728 459896 0 0 3 0x14200 bored viomb 24042 329025 0 0 3 0x40014200 acpi0 acpi0 88737 271780 0 0 7 0x40014200 idle1 2644 398267 0 0 3 0x14200 bored softnet7 86628 202181 0 0 3 0x14200 bored softnet6 96966 90254 0 0 3 0x14200 bored softnet5 46800 11489 0 0 3 0x14200 bored softnet4 71688 468849 0 0 3 0x14200 bored softnet3 58141 464169 0 0 3 0x14200 bored softnet2 91015 488824 0 0 3 0x14200 bored softnet1 96960 404783 0 0 3 0x14200 bored softnet0 45721 119734 0 0 3 0x14200 bored systqmp 26129 251413 0 0 3 0x14200 bored systq 17354 66524 0 0 3 0x14200 tmoslp softclockmp 27621 400497 0 0 3 0x40014200 tmoslp softclock 50735 196744 0 0 3 0x40014200 idle0 1 43083 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 (0xffff8000299eee08) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x13b sys/kern/kern_lock.c:261 #3 clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 #4 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 #5 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #5 dtclose+0x109 sys/dev/dt/dt_dev.c:232 #6 spec_close+0x466 sys/kern/spec_vnops.c:-1 #7 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #8 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #8 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #9 fdrop+0x121 sys/kern/kern_descrip.c:1280 #10 closef+0x192 sys/kern/kern_descrip.c:1264 #11 fdfree+0x116 sys/kern/kern_descrip.c:1195 #12 exit1+0x576 sys/kern/kern_exit.c:215 #13 sys_exit+0x1a sys/kern/kern_exit.c:-1 #14 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #15 Xsyscall+0x128 Process 30979 (syz-executor) thread 0xffff80003ac28558 (404229) exclusive rrwlock inode r = 0 (0xfffffd805e507338) #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 spec_open+0x2f2 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x6a0 sys/kern/vfs_vnops.c:177 #8 vndioctl+0xc45 sys/dev/vnd.c:457 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #13 Xsyscall+0x128 Process 30979 (syz-executor) thread 0xffff80003ac32030 (99016) exclusive rrwlock inode r = 0 (0xfffffd805e5070e8) #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 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:748 #10 Xsyscall+0x128 Process 75343 (syz-executor) thread 0xffff80002a2defb0 (31085) exclusive rrwlock inode r = 0 (0xfffffd806c144eb8) #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 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:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 11208K 12517K 166960K 14759 0 pcb 17 16K 18K 166960K 512 0 rtable 167 10K 11K 166960K 778 0 pf 41 18K 22K 166960K 353 0 ifaddr 34 6K 8K 166960K 224 0 ifgroup 67 2K 3K 166960K 473 0 sysctl 4 1K 9K 166960K 52 0 counters 74 37K 38K 166960K 384 0 ioctlops 0 0K 5K 166960K 2383 0 iov 0 0K 16K 166960K 333 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1520 96K 96K 166960K 4534 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 102 0 dirhash 12 2K 3K 166960K 183 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 2814 0 sigio 1 0K 0K 166960K 57 0 proc 72 115K 164K 166960K 896 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 306 0 in_multi 60 4K 7K 166960K 249 0 ether_multi 1 0K 0K 166960K 17 0 mrt 2 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 711 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 168K 183K 166960K 26505 0 UVM aobj 94 7K 7K 166960K 98 0 pinsyscall 41 82K 106K 166960K 4028 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 178 0 NDP 15 0K 2K 166960K 160 0 temp 87 8652K 8894K 166960K 162411 0 kqueue 13 20K 34K 166960K 469 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 120 211 0 208 1 0 1 1 0 8 0 rtentry 176 256 0 198 5 0 5 5 0 8 0 unpcb 144 2044 0 2025 17 15 2 6 0 8 1 syncache 336 10 0 10 3 3 0 1 0 8 0 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 736 851 0 847 13 12 1 7 0 8 0 arp 128 45 0 36 1 0 1 1 0 8 0 inpcb 328 2958 0 2951 20 16 4 7 0 8 3 nd6 144 35 0 21 1 0 1 1 0 8 0 pkpcb 40 22 0 22 6 6 0 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1192 92 0 92 3 2 1 1 0 8 1 pppxif 1504 24 0 24 5 4 1 1 0 8 1 pffrag 232 18 0 7 1 0 1 1 0 482 0 pffrnode 88 17 0 6 1 0 1 1 0 8 0 pffrent 40 37 0 25 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 2 2 2 0 1 0 8 0 pfstitem 24 167 0 93 1 0 1 1 0 8 0 pfstkey 128 167 0 93 3 0 3 3 0 8 0 pfstate 384 165 0 93 10 0 10 10 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 849 0 554 33 10 23 28 0 8 0 art_table 40 853 0 554 5 0 5 5 0 8 0 art_node 32 253 0 205 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 15 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 92 0 82 1 0 1 1 0 8 0 shmpl 112 95 0 4 3 0 3 3 0 8 0 dirhash 1024 131 0 114 3 0 3 3 0 8 0 dino2pl 256 7101 0 5584 96 0 96 96 0 8 0 ffsino 296 7101 0 5584 118 0 118 118 0 8 0 nchpl 144 10675 0 8960 64 0 64 64 0 8 0 rtmask 32 8 0 8 5 5 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 38111 0 38110 6 5 1 2 0 8 0 percpumem 16 207 0 155 1 0 1 1 0 8 0 kstatmem 264 272 0 236 6 3 3 3 0 8 0 scsiplug 72 15 0 15 7 7 0 1 0 8 0 scxspl 216 87621 0 87620 12 11 1 8 1 8 0 plimitpl 152 729 0 711 1 0 1 1 0 8 0 sigapl 424 3101 0 3045 7 0 7 7 0 8 0 knotepl 120 562 0 0 17 0 17 17 0 8 0 kqueuepl 224 1068 0 1059 13 12 1 5 0 8 0 pipepl 344 479 0 448 12 4 8 9 0 8 5 fdescpl 528 3065 0 3035 3 0 3 3 0 8 0 filepl 160 21223 0 20993 27 10 17 18 0 8 5 lockfpl 104 2218 0 2216 4 3 1 2 0 8 0 lockfspl 48 856 0 854 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 142 0 125 1 0 1 1 0 8 0 ucredpl 104 3335 0 3317 1 0 1 1 0 8 0 zombiepl 144 3510 0 3504 1 0 1 1 0 8 0 processpl 1232 3101 0 3045 5 0 5 5 0 8 0 procpl 664 7183 0 7118 7 0 7 7 0 8 0 sosppl 168 13 0 13 5 5 0 1 0 8 0 sockpl 752 5365 0 5336 38 30 8 18 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 58 0 0 7 1 6 7 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 1191 0 0 74 0 74 74 0 8 0 bufpl 280 37572 0 31429 440 0 440 440 0 8 0 anonpl 32 18138 0 0 146 0 146 146 0 246 0 amapchunkpl 152 91994 0 91381 62 30 32 34 0 158 4 amappl16 200 13368 0 13096 111 86 25 37 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 131 0 119 1 0 1 1 0 8 0 amappl13 176 10 0 9 1 0 1 1 0 8 0 amappl12 168 3791 0 3761 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 257 0 256 1 0 1 1 0 8 0 amappl8 136 25 0 21 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 302 0 299 1 0 1 1 0 8 0 amappl5 112 140 0 130 1 0 1 1 0 8 0 amappl4 104 322 0 301 1 0 1 1 0 8 0 amappl3 96 18995 0 18882 5 1 4 4 0 8 0 amappl2 88 756 0 692 2 0 2 2 0 8 0 amappl1 80 20453 0 19857 17 3 14 15 0 8 0 amappl 88 25260 0 25085 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 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 128 259 0 259 3 3 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 97 0 4 2 0 2 2 0 8 0 uaddrrnd 24 3065 0 3035 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3065 0 3035 1 0 1 1 0 8 0 vmmpekpl 168 23272 0 23224 3 0 3 3 0 8 0 vmmpepl 168 196242 0 194014 146 35 111 121 0 357 0 vmsppl 488 3064 0 3034 5 0 5 5 0 8 0 rwobjpl 80 58541 0 51331 165 13 152 157 0 8 0 pdppl 4096 6138 0 6068 114 42 72 86 0 8 2 pvpl 32 27942 0 0 225 0 225 225 0 265 0 pmappl 256 3064 0 3034 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 379 0 76 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(ffffffff83969ef8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff83969ee8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffff8000299eee58,220,ffffffff833eed36) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffff8000299eee58,ffff8000299eedf8,220,ffffffff833eed36,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff8000016d6000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(21e5f,81,2000,ffff80003ac282c0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003ac282c0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3cd920) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800e3bfe98,81,fffffd80097fb4e0,ffff80003ac282c0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b9b4718,ffff80003ac282c0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b9b4718,ffff80003ac282c0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b9b4718,ffff80003ac282c0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b9b4718,ffff80003ac282c0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003ac282c0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003ac282c0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003ac282c0,ffff80002a3cdc90,ffff80002a3cdbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3cdc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3cdc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d992843130, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(0,2) at __sanitizer_cov_trace_const_cmp4+0x27 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_const_cmp4(0,2) at __sanitizer_cov_trace_const_cmp4+0x27 sys/dev/kcov.c:230 mtx_enter(ffff8000299eedf8) at mtx_enter+0xaf sys/kern/kern_lock.c:264 clockintr_dispatch(ffff80002a250b50) at clockintr_dispatch+0x3b1 sys/kern/kern_clockintr.c:215 lapic_clockintr(0,0) at lapic_clockintr+0x51 sys/arch/amd64/amd64/lapic.c:484 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -10