witness: lock order reversal: 1st 0xffffffff837e3e30 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff839e9d90 &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 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{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(ffffffff839e9d90,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839e9d80) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffffffff837e3e80,220,ffffffff834307fe) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffffffff837e3e80,ffffffff837e3e20,220,ffffffff834307fe,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800000afb000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff8000ffff2fa8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff2fa8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002ebcbf00) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805fb81050,81,fffffd80097fd7b8,ffff8000ffff2fa8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c0dd550,ffff8000ffff2fa8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c0dd550,ffff8000ffff2fa8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c0dd550,ffff8000ffff2fa8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c0dd550,ffff8000ffff2fa8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff2fa8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2fa8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff2fa8,ffff80002ebcc270,ffff80002ebcc1c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebcc270) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebcc270) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x790c6eb619d0, count: -17 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ebcbbd0 rbx 0 rdx 0 rcx 0xffff8000ffff2fa8 rax 0xffff8000299ddff0 r8 0xffff80002ebcbab0 r9 0x8080808080808080 r10 0x67a486e02e0b51e8 r11 0x221369480f924a10 r12 0xfffffd8003f4ee40 r13 0xfffffd800473cd58 r14 0x3 r15 0xffffffff8342267a substchar+0xa126 rip 0xffffffff81209f45 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002ebcbbc0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=255813 pid=52738 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff2fa8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffeaa80,0xffff8000fffea2c8 process=0xffff8000fffec9b8 user=0xffff80002ebc7000, vmspace=0xfffffd805e88f7c8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23265 200545 18686 0 7 0 syz-executor 23869 517563 43318 0 2 0 syz-executor 23869 384323 43318 0 3 0x4000080 fsleep syz-executor 23869 391130 43318 0 3 0x4000080 fsleep syz-executor 57860 395534 80555 0 3 0x80 nanoslp syz-executor 57860 470492 80555 0 3 0x4000080 nanoslp syz-executor 57860 280069 80555 0 3 0x4000080 fsleep syz-executor 86646 486901 27822 0 3 0x80 nanoslp syz-executor 86646 230933 27822 0 3 0x4000080 sbwait syz-executor 86646 56090 27822 0 3 0x4000080 fsleep syz-executor 86646 356600 27822 0 3 0x4000080 fsleep syz-executor 6606 321026 91622 0 3 0x80 nanoslp syz-executor 6606 248812 91622 0 3 0x4000080 kqsel syz-executor 6606 93840 91622 0 3 0x4000080 fsleep syz-executor 43318 78822 66427 0 3 0x82 nanoslp syz-executor 77660 485826 66427 0 3 0x82 nanoslp syz-executor 80555 278004 66427 0 3 0x82 nanoslp syz-executor 27182 161743 66427 0 3 0x2 biowait syz-executor 18686 80230 66427 0 3 0x82 nanoslp syz-executor 27822 258251 66427 0 3 0x82 nanoslp syz-executor 96203 343590 66427 0 3 0x82 wait syz-executor 91622 405825 66427 0 3 0x82 nanoslp syz-executor 66427 428895 95457 0 3 0x82 kqread syz-executor 95457 23088 58459 0 3 0x10008a sigsusp ksh 58459 130371 81497 0 3 0x98 kqread sshd-session 81497 161847 19768 0 3 0x92 kqread sshd-session 84157 475571 1 0 3 0x100083 ttyin getty 19768 224919 1 0 3 0x88 kqread sshd 45347 355329 14400 74 3 0x1100092 bpf pflogd 14400 404084 1 0 3 0x80 sbwait pflogd 29513 420080 13361 73 3 0x1100090 kqread syslogd 13361 233292 1 0 3 0x100082 sbwait syslogd 45739 194137 1 0 3 0x100080 kqread resolvd 52543 393117 94642 77 3 0x100092 kqread dhcpleased 13826 225484 94642 77 3 0x100092 kqread dhcpleased 94642 66999 1 0 3 0x80 kqread dhcpleased 18113 44542 0 0 3 0x14200 bored smr 71017 186343 0 0 2 0x14200 zerothread 29408 196160 0 0 3 0x14200 aiodoned aiodoned 22065 297856 0 0 3 0x14200 syncer update 63606 405187 0 0 3 0x14200 cleaner cleaner 99230 315974 0 0 3 0x14200 reaper reaper 84194 397440 0 0 3 0x14200 pgdaemon pagedaemon 7114 70924 0 0 3 0x14200 bored viomb 9523 380256 0 0 3 0x40014200 acpi0 acpi0 44629 125370 0 0 3 0x40014200 idle1 53231 298128 0 0 3 0x14200 bored softnet1 65912 522152 0 0 3 0x14200 bored softnet0 52945 285231 0 0 3 0x14200 bored systqmp 90902 313394 0 0 3 0x14200 bored systq 82607 412247 0 0 3 0x14200 tmoslp softclockmp 96138 3956 0 0 3 0x40014200 tmoslp softclock 37406 442270 0 0 3 0x40014200 idle0 1 87192 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &cq->cq_mtx r = 0 (0xffffffff837e3e30) #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 23265 (syz-executor) thread 0xffff8000fffeafb0 (200545) exclusive rwlock amaplk r = 0 (0xfffffd806dc431e8) #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 uvm_fault_check+0x8a9 sys/uvm/uvm_fault.c:834 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd805e88fe80) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 Process 27182 (syz-executor) thread 0xffff8000ffff3770 (161743) exclusive rrwlock inode r = 0 (0xfffffd806f304ef8) #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 (0xfffffd806d24fc60) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11252K 11541K 166960K 12676 0 pcb 17 12K 12K 166960K 117 0 rtable 188 8K 10K 166960K 458 0 pf 38 18K 20K 166960K 104 0 ifaddr 36 5K 8K 166960K 76 0 ifgroup 55 2K 3K 166960K 117 0 sysctl 2 1K 9K 166960K 7 0 counters 70 37K 38K 166960K 136 0 ioctlops 0 0K 4K 166960K 1581 0 iov 0 0K 12K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1437 90K 91K 166960K 1929 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 136K 136K 166960K 22 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 106K 166960K 670 0 sigio 0 0K 0K 166960K 11 0 proc 72 115K 147K 166960K 584 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 2 0K 0K 166960K 69 0 in_multi 69 4K 7K 166960K 127 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 467 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 243 167K 182K 166960K 7930 0 UVM aobj 17 8K 8K 166960K 17 0 pinsyscall 42 84K 98K 166960K 1792 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 58 0 NDP 12 0K 1K 166960K 47 0 temp 61 8674K 8739K 166960K 17860 0 kqueue 14 22K 30K 166960K 125 0 SYN cache 2 8K 16K 166960K 3 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 71 0 67 1 0 1 1 0 8 0 rtentry 176 134 0 61 6 0 6 6 0 8 0 unpcb 144 376 0 358 4 0 4 4 0 8 3 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 238 0 233 7 1 6 7 0 8 5 arp 136 19 0 6 1 0 1 1 0 8 0 inpcb 328 662 0 652 7 1 6 7 0 8 4 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 152 28 0 11 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 23 0 23 1 0 1 1 0 8 1 pppxif 1504 6 0 6 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 6 0 1 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 0 1 1 0 8 1 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 56 0 3 1 0 1 1 0 8 0 pfstkey 128 58 0 5 2 0 2 2 0 8 0 pfstate 448 55 0 4 6 0 6 6 0 8 0 pfrule 1344 28 0 23 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 536 0 220 29 1 28 29 0 8 6 art_table 40 538 0 220 5 0 5 5 0 8 0 art_node 32 134 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 72 0 69 1 0 1 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2546 0 1039 95 0 95 95 0 8 0 ffsino 296 2546 0 1039 117 0 117 117 0 8 0 nchpl 144 3465 0 1767 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 vnodes 216 3003 0 0 167 0 167 167 0 8 0 namei 1024 10736 0 10735 2 1 1 2 0 8 0 percpumem 16 83 0 33 1 0 1 1 0 8 0 vcpupl 3968 3 0 0 1 0 1 1 0 8 0 vmpool 840 3 0 0 1 0 1 1 0 8 0 kstatmem 264 68 0 38 3 0 3 3 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 18137 0 18136 10 4 6 8 1 8 5 plimitpl 152 105 0 86 1 0 1 1 0 8 0 sigapl 424 972 0 925 6 0 6 6 0 8 0 knotepl 120 318 0 0 10 0 10 10 0 8 0 kqueuepl 224 267 0 256 5 0 5 5 0 8 4 pipepl 344 159 0 132 3 0 3 3 0 8 0 fdescpl 528 956 0 925 3 0 3 3 0 8 0 filepl 160 4886 0 4655 14 0 14 14 0 8 3 lockfpl 104 172 0 170 1 0 1 1 0 8 0 lockfspl 48 77 0 75 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 630 0 616 1 0 1 1 0 8 0 zombiepl 144 927 0 925 1 0 1 1 0 8 0 processpl 1232 972 0 925 5 1 4 5 0 8 0 procpl 664 1886 0 1830 6 0 6 6 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 1126 0 1094 11 0 11 11 0 8 7 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 205 0 0 13 0 13 13 0 8 0 bufpl 280 6829 0 693 439 0 439 439 0 8 0 anonpl 32 13662 0 0 112 1 111 111 0 246 0 amapchunkpl 152 26110 0 25627 30 0 30 30 0 158 7 amappl16 200 3573 0 3541 35 21 14 30 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 460 0 459 1 0 1 1 0 8 0 amappl12 168 1322 0 1280 3 1 2 3 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 46 0 32 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 37 0 33 1 0 1 1 0 8 0 amappl7 128 78 0 77 1 0 1 1 0 8 0 amappl6 120 280 0 266 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 424 0 395 1 0 1 1 0 8 0 amappl3 96 4952 0 4845 5 1 4 4 0 8 0 amappl2 88 543 0 482 2 0 2 2 0 8 0 amappl1 80 11466 0 10870 17 3 14 15 0 8 0 amappl 88 7117 0 6952 5 0 5 5 0 92 0 uvmvnodes 80 116 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 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 956 0 925 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 956 0 925 1 0 1 1 0 8 0 vmmpekpl 168 9355 0 9317 2 0 2 2 0 8 0 vmmpepl 168 67620 0 65704 111 0 111 111 0 357 22 vmsppl 488 955 0 925 6 1 5 5 0 8 0 rwobjpl 80 20982 0 19923 33 0 33 33 0 8 4 pdppl 4096 1926 0 1853 102 25 77 82 0 8 4 pvpl 32 22485 0 0 184 2 182 182 0 265 0 pmappl 256 958 0 925 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 290 0 31 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(ffffffff837e2ff0) 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 mtx_enter(ffffffff837e3e20) at mtx_enter+0x377 sys/kern/kern_lock.c:454 clockintr_dispatch(ffff80003c452c20) 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 memcpy() at memcpy+0x19 uvm_fault_upper(ffff80003c452f00,ffff80003c452f38,ffff80003c452e00) at uvm_fault_upper+0x6aa sys/uvm/uvm_fault.c:1081 uvm_fault(fffffd805e88fd80,3048e379000,0,2) at uvm_fault+0x198 sys/uvm/uvm_fault.c:635 upageflttrap(ffff80003c4530a0,3048e379a48) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4530a0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x6fe8c52d7680, count: -13 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(ffffffff839e9d90,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839e9d80) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffffffff837e3e80,220,ffffffff834307fe) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffffffff837e3e80,ffffffff837e3e20,220,ffffffff834307fe,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800000afb000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff8000ffff2fa8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff2fa8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002ebcbf00) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805fb81050,81,fffffd80097fd7b8,ffff8000ffff2fa8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c0dd550,ffff8000ffff2fa8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c0dd550,ffff8000ffff2fa8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c0dd550,ffff8000ffff2fa8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c0dd550,ffff8000ffff2fa8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff2fa8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2fa8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff2fa8,ffff80002ebcc270,ffff80002ebcc1c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ebcc270) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ebcc270) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x790c6eb619d0, count: -17