witness: lock order reversal: 1st 0xffffffff8381be08 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff8389a1d0 &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+0xa99 futex_wait sys/kern/sys_futex.c:301 [inline] #4 sys_futex+0xa99 sys/kern/sys_futex.c:151 #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{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(ffffffff8389a1d0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff8389a1c0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffffffff8381be58,220,ffffffff833f1cab) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffffffff8381be58,ffffffff8381bdf8,220,ffffffff833f1cab,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff80002a2b6550) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b6550) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c490c40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c8b7100,81,fffffd80097fb548,ffff80002a2b6550) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b9439a0,ffff80002a2b6550) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b9439a0,ffff80002a2b6550) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b9439a0,ffff80002a2b6550) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b9439a0,ffff80002a2b6550) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b6550) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b6550,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b6550,ffff80003c490fb0,ffff80003c490f00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c490fb0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c490fb0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75c4ef804da0, count: -17 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c490950 rbx 0 rdx 0 rcx 0xffff80002a2b6550 rax 0xffff8000299edff0 r8 0xffff80003c490830 r9 0x8080808080808080 r10 0xe93d9d0b8edf8e7 r11 0x9898827e07da9b17 r12 0xfffffd8003efbdc0 r13 0xfffffd80046e9a28 r14 0x3 r15 0xffffffff833da567 substchar+0x8856 rip 0xffffffff81959585 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c490940 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=153921 pid=38136 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2b6550 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2b7248,0xffff80003c43b508 process=0xffff800035824ec0 user=0xffff80003c48c000, vmspace=0xfffffd80637e3028 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78696 428371 29582 0 2 0x100000 sh 55571 293706 70027 0 2 0 syz-executor 55571 205445 70027 0 3 0x4000080 fsleep syz-executor 94144 153481 88880 0 2 0 syz-executor 29582 78157 31597 0 3 0x10008a sigsusp sh 6501 70897 66961 0 3 0x80 nanoslp syz-executor 6501 105250 66961 0 3 0x4000080 fsleep syz-executor 6501 365606 66961 0 3 0x4000080 fsleep syz-executor 6501 237068 66961 0 2 0x4000000 syz-executor 31597 228641 74831 0 3 0x82 wait syz-executor 36674 386964 67690 0 3 0x3000 suspend syz-executor 36674 89240 67690 0 3 0x4081000 biowait syz-executor 36674 454317 67690 0 3 0x4081000 inode syz-executor 75849 191985 1 0 3 0x100083 ttyin getty 96396 171490 0 0 3 0x14280 nfsidl nfsio 70561 347082 0 0 3 0x14280 nfsidl nfsio 69959 9549 0 0 3 0x14280 nfsidl nfsio 1225 493053 0 0 3 0x14280 nfsidl nfsio 31864 186006 0 0 3 0x14280 nfsidl nfsio 61380 153915 0 0 3 0x14280 nfsidl nfsio 98898 55626 0 0 3 0x14280 nfsidl nfsio 43929 351750 0 0 3 0x14280 nfsidl nfsio 69219 15195 0 0 3 0x14280 nfsidl nfsio 60935 2120 0 0 3 0x14280 nfsidl nfsio 75487 399077 0 0 3 0x14280 nfsidl nfsio 57789 357139 0 0 3 0x14280 nfsidl nfsio 41859 161752 0 0 3 0x14280 nfsidl nfsio 3281 381642 0 0 3 0x14280 nfsidl nfsio 39882 498642 0 0 3 0x14280 nfsidl nfsio 90991 140801 0 0 3 0x14280 nfsidl nfsio 88504 215564 0 0 3 0x14280 nfsidl nfsio 27900 462469 0 0 3 0x14280 nfsidl nfsio 45347 212818 0 0 3 0x14280 nfsidl nfsio 87541 226352 0 0 3 0x14280 nfsidl nfsio 99217 352219 0 0 3 0x14200 bored sosplice 10554 114446 74831 0 3 0x2 biowait syz-executor 66961 108290 74831 0 3 0x82 nanoslp syz-executor 62158 354340 74831 0 3 0x82 nanoslp syz-executor 67690 65756 74831 0 3 0x82 wait syz-executor 70027 446531 74831 0 3 0x82 nanoslp syz-executor 88880 135900 74831 0 3 0x82 nanoslp syz-executor 59366 332222 74831 0 3 0x82 nanoslp syz-executor 74831 382583 95396 0 3 0x82 kqread syz-executor 95396 347295 56052 0 3 0x10008a sigsusp ksh 56052 310164 63890 0 3 0x98 kqread sshd-session 63890 87942 71941 0 3 0x92 kqread sshd-session 71941 487035 1 0 3 0x88 kqread sshd 52198 368174 51277 74 3 0x1100092 bpf pflogd 51277 173050 1 0 3 0x80 sbwait pflogd 1775 297697 78573 73 3 0x1100090 kqread syslogd 78573 291481 1 0 3 0x100082 sbwait syslogd 96933 67424 1 0 3 0x100080 kqread resolvd 10191 368212 77981 77 3 0x100092 kqread dhcpleased 68905 371465 77981 77 3 0x100092 kqread dhcpleased 77981 31323 1 0 3 0x80 kqread dhcpleased 84434 246779 0 0 3 0x14200 bored smr 24090 331058 0 0 7 0x14200 zerothread 88524 172693 0 0 3 0x14200 aiodoned aiodoned 83454 319617 0 0 3 0x14200 syncer update 45748 491219 0 0 3 0x14200 cleaner cleaner 96134 301134 0 0 3 0x14200 reaper reaper 10852 66065 0 0 3 0x14200 pgdaemon pagedaemon 52209 27402 0 0 3 0x14200 bored viomb 50819 180556 0 0 3 0x40014200 acpi0 acpi0 4415 468825 0 0 3 0x40014200 idle1 92086 319045 0 0 3 0x14200 bored softnet7 47954 130818 0 0 3 0x14200 bored softnet6 7434 17801 0 0 3 0x14200 bored softnet5 73534 485187 0 0 3 0x14200 bored softnet4 58498 218948 0 0 3 0x14200 bored softnet3 67387 110366 0 0 3 0x14200 bored softnet2 10000 15151 0 0 3 0x14200 bored softnet1 88974 342352 0 0 3 0x14200 bored softnet0 82971 337545 0 0 3 0x14200 bored systqmp 70615 106544 0 0 3 0x14200 bored systq 31047 355181 0 0 3 0x14200 tmoslp softclockmp 25012 107249 0 0 3 0x40014200 tmoslp softclock 1303 126553 0 0 3 0x40014200 idle0 1 115786 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &cq->cq_mtx r = 0 (0xffffffff8381be08) #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+0x62 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 36674 (syz-executor) thread 0xffff80003c4aefc0 (89240) exclusive rrwlock inode r = 0 (0xfffffd806ad42580) #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 Process 10554 (syz-executor) thread 0xffff8000ffff2fa0 (114446) exclusive rrwlock inode r = 0 (0xfffffd806ad42208) #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 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:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bcde200) #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 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:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10253 11085K 11292K 166960K 11705 0 pcb 17 14K 15K 166960K 109 0 rtable 151 8K 8K 166960K 358 0 pf 36 17K 19K 166960K 110 0 ifaddr 35 5K 8K 166960K 82 0 ifgroup 59 2K 2K 166960K 129 0 sysctl 4 1K 9K 166960K 11 0 counters 70 37K 38K 166960K 148 0 ioctlops 0 0K 4K 166960K 1570 0 iov 0 0K 28K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 87K 166960K 1847 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 36 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 780 0 sigio 0 0K 0K 166960K 14 0 proc 72 115K 180K 166960K 657 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 103 0 in_multi 56 4K 7K 166960K 126 0 ether_multi 1 0K 0K 166960K 8 0 mrt 2 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 480 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 231 168K 182K 166960K 8900 0 UVM aobj 27 2K 2K 166960K 29 0 pinsyscall 43 86K 102K 166960K 1900 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 34 0 NDP 13 0K 2K 166960K 54 0 temp 59 8648K 8718K 166960K 22664 0 kqueue 13 20K 32K 166960K 179 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 76 0 73 1 0 1 1 0 8 0 rtentry 176 116 0 60 5 0 5 5 0 8 0 unpcb 144 418 0 401 4 2 2 2 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 302 0 298 7 6 1 7 0 8 0 arp 128 13 0 4 1 0 1 1 0 8 0 inpcb 328 793 0 784 7 5 2 7 0 8 0 nd6 144 18 0 9 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 31 0 31 1 1 0 1 0 8 0 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 6 0 1 1 0 1 1 0 8 0 pffrent 40 7 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 84 0 18 1 0 1 1 0 8 0 pfstkey 128 84 0 18 3 0 3 3 0 8 0 pfstate 384 84 0 18 8 0 8 8 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 525 0 257 29 8 21 28 0 8 2 art_table 40 527 0 257 5 0 5 5 0 8 0 art_node 32 116 0 68 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 33 0 23 1 0 1 1 0 8 0 shmpl 112 26 0 2 1 0 1 1 0 8 0 dirhash 1024 26 0 9 3 0 3 3 0 8 0 dino2pl 256 2881 0 1379 95 0 95 95 0 8 0 ffsino 296 2881 0 1379 117 0 117 117 0 8 0 nchpl 144 3995 0 2302 64 0 64 64 0 8 0 rtmask 32 8 0 8 2 2 0 1 0 8 0 uvmvnodes 80 3141 0 0 65 0 65 65 0 8 0 vnodes 216 3141 0 0 175 0 175 175 0 8 0 namei 1024 13596 0 13595 1 0 1 1 0 8 0 percpumem 16 89 0 39 1 0 1 1 0 8 0 kstatmem 264 82 0 50 3 0 3 3 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 20424 0 20422 9 8 1 8 1 8 0 plimitpl 152 125 0 107 1 0 1 1 0 8 0 sigapl 424 1107 0 1032 9 0 9 9 0 8 0 knotepl 120 562 0 0 18 0 18 18 0 8 0 kqueuepl 224 356 0 347 6 5 1 5 0 8 0 pipepl 344 166 0 139 3 0 3 3 0 8 0 fdescpl 528 1064 0 1032 3 0 3 3 0 8 0 filepl 160 6281 0 6065 17 4 13 14 0 8 2 lockfpl 104 352 0 349 2 1 1 2 0 8 0 lockfspl 48 101 0 98 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 104 1141 0 1127 1 0 1 1 0 8 0 zombiepl 144 1035 0 1032 1 0 1 1 0 8 0 processpl 1248 1107 0 1032 6 0 6 6 0 8 0 procpl 664 2277 0 2196 8 0 8 8 0 8 0 sosppl 168 5 0 4 1 0 1 1 0 8 0 sockpl 752 1309 0 1280 10 5 5 10 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 206 0 0 13 0 13 13 0 8 0 bufpl 280 7927 0 1784 439 0 439 439 0 8 0 anonpl 32 10996 0 0 89 0 89 89 0 246 0 amapchunkpl 152 29417 0 28956 35 13 22 32 0 158 0 amappl16 200 4429 0 4288 28 20 8 26 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 117 0 105 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 1731 0 1700 3 1 2 2 0 8 0 amappl11 160 64 0 50 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 2 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 131 0 117 1 0 1 1 0 8 0 amappl6 120 187 0 183 1 0 1 1 0 8 0 amappl5 112 130 0 120 1 0 1 1 0 8 0 amappl4 104 322 0 302 1 0 1 1 0 8 0 amappl3 96 5687 0 5583 4 0 4 4 0 8 0 amappl2 88 664 0 602 2 0 2 2 0 8 0 amappl1 80 11107 0 10501 15 0 15 15 0 8 0 amappl 88 8070 0 7914 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 128 255 0 255 2 2 0 1 0 8 0 dma64 64 8 0 8 2 2 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 28 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1064 0 1032 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1064 0 1032 1 0 1 1 0 8 0 vmmpekpl 168 9978 0 9937 2 0 2 2 0 8 0 vmmpepl 168 73962 0 71874 111 17 94 111 0 357 0 vmsppl 488 1063 0 1032 6 1 5 5 0 8 0 rwobjpl 80 25237 0 21027 87 0 87 87 0 8 0 pdppl 4096 2136 0 2064 106 32 74 84 0 8 2 pvpl 32 19358 0 0 158 1 157 157 0 265 0 pmappl 256 1063 0 1032 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 284 0 49 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(ffffffff8381aff0) 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+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 mtx_enter(ffffffff8381bdf8) at mtx_enter+0xdd sys/kern/kern_lock.c:264 clockintr_dispatch(ffff80002a280d00) 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 pagezero() at pagezero+0x33 end trace frame: 0x0, count: -9 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(ffffffff8389a1d0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff8389a1c0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffffffff8381be58,220,ffffffff833f1cab) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffffffff8381be58,ffffffff8381bdf8,220,ffffffff833f1cab,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,81,2000,ffff80002a2b6550) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b6550) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c490c40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805c8b7100,81,fffffd80097fb548,ffff80002a2b6550) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b9439a0,ffff80002a2b6550) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b9439a0,ffff80002a2b6550) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b9439a0,ffff80002a2b6550) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b9439a0,ffff80002a2b6550) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b6550) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b6550,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b6550,ffff80003c490fb0,ffff80003c490f00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c490fb0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c490fb0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75c4ef804da0, count: -17