witness: lock order reversal: 1st 0xffff8000299bee30 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff8399d020 &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:1281 #9 closef+0x192 sys/kern/kern_descrip.c:1265 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #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 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:783 #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(ffffffff8399d020,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff8399d010) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffff8000299bee80,220,ffffffff834c9602) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffff8000299bee80,ffff8000299bee20,220,ffffffff834c9602,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001691000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e5f,81,2000,ffff80003abd9ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e5f,81,2000,ffff80003abd9ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c3f6fd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ef6d510,81,fffffd80097fd680,ffff80003abd9ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c607048,ffff80003abd9ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c607048,ffff80003abd9ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c607048,ffff80003abd9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806c607048,ffff80003abd9ca8) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c3f7230) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f7230) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x387d703f140, count: -14 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c3f6ca0 rbx 0 rdx 0xffff8000015c6e00 rcx 0xffff80003abd9ca8 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c3f6b80 r9 0x8080808080808080 r10 0xbbe8c5ffbf49878f r11 0x6cf0b9bf59b155ed r12 0xfffffd8004036e40 r13 0xfffffd80047e1330 r14 0x3 r15 0xffffffff834bc5a4 substchar+0x126e1 rip 0xffffffff81e5aea5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c3f6c90 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=42799 pid=84310 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003abd8d18,0xffff80003abd9258 process=0xffff80003abd5830 user=0xffff80003c3f2000, vmspace=0xfffffd806c8773e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50587 332095 82237 0 3 0x3000 suspend syz-executor 50587 356538 82237 0 2 0x4081080 syz-executor 5831 375460 11989 0 2 0 syz-executor 5831 504940 11989 0 3 0x4000080 fsleep syz-executor 5831 452680 11989 0 3 0x4000080 fsleep syz-executor 84310 521358 2302 0 2 0 syz-executor *84310 42799 2302 0 7 0x4000000 syz-executor 84310 371883 2302 0 3 0x4000080 fsleep syz-executor 91175 334800 80955 0 3 0x80 nanoslp syz-executor 91175 303163 80955 0 3 0x4000080 sbwait syz-executor 91175 413499 80955 0 3 0x4000080 fsleep syz-executor 69425 34129 55884 0 2 0 syz-executor 69425 450151 55884 0 3 0x4000080 fsleep syz-executor 12937 493792 51232 0 2 0 syz-executor 12937 347719 51232 0 2 0x4000000 syz-executor 15727 152353 93564 0 2 0 syz-executor 15727 358346 93564 0 3 0x4000080 fsleep syz-executor 15727 445911 93564 0 3 0x4000080 fsleep syz-executor 15727 305795 93564 0 3 0x4000080 fsleep syz-executor 11989 418636 73127 0 3 0x82 nanoslp syz-executor 31198 77432 73127 0 3 0x82 wait syz-executor 80955 216622 73127 0 3 0x82 nanoslp syz-executor 55884 406211 73127 0 3 0x82 nanoslp syz-executor 51232 203261 73127 0 3 0x82 nanoslp syz-executor 82237 76298 73127 0 3 0x82 nanoslp syz-executor 93564 373399 73127 0 3 0x82 nanoslp syz-executor 2302 377123 73127 0 3 0x82 nanoslp syz-executor 73127 92542 28882 0 3 0x82 kqread syz-executor 28882 330096 78594 0 3 0x10008a sigsusp ksh 78594 436996 55497 0 3 0x98 kqread sshd-session 55497 427794 14495 0 3 0x92 kqread sshd-session 78066 108390 1 0 3 0x100083 ttyin getty 14495 276835 1 0 3 0x88 kqread sshd 85126 248876 21024 74 3 0x1100092 bpf pflogd 21024 107105 1 0 3 0x80 sbwait pflogd 89053 76816 12272 73 3 0x1100090 kqread syslogd 12272 390425 1 0 3 0x100082 sbwait syslogd 10139 438550 1 0 3 0x100080 kqread resolvd 94224 314081 63846 77 3 0x100092 kqread dhcpleased 80456 157301 63846 77 3 0x100092 kqread dhcpleased 63846 18695 1 0 3 0x80 kqread dhcpleased 90491 473952 0 0 3 0x14200 bored smr 4142 302458 0 0 2 0x14200 zerothread 72999 97487 0 0 3 0x14200 aiodoned aiodoned 75287 440819 0 0 3 0x14200 syncer update 43079 281141 0 0 3 0x14200 cleaner cleaner 54869 251530 0 0 7 0x14200 reaper 71745 226332 0 0 3 0x14200 pgdaemon pagedaemon 63642 416436 0 0 3 0x14200 bored viomb 19336 467545 0 0 3 0x40014200 acpi0 acpi0 84708 329941 0 0 3 0x40014200 idle1 92400 256091 0 0 3 0x14200 bored softnet1 81459 431929 0 0 3 0x14200 bored softnet0 6923 225265 0 0 3 0x14200 bored systqmp 50105 387450 0 0 3 0x14200 bored systq 87887 183037 0 0 3 0x14200 tmoslp softclockmp 41950 76491 0 0 3 0x40014200 tmoslp softclock 8512 208997 0 0 3 0x40014200 idle0 1 371657 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &cq->cq_mtx r = 0 (0xffff8000299bee30) #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:1281 #9 closef+0x192 sys/kern/kern_descrip.c:1265 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 Process 84310 (syz-executor) thread 0xffff80003abd9ca8 (42799) exclusive rwlock dtlk r = 0 (0xffffffff83875c08) #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:1281 #8 closef+0x192 sys/kern/kern_descrip.c:1265 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d0b40) #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:1281 #3 closef+0x192 sys/kern/kern_descrip.c:1265 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 exclusive mutex &cq->cq_mtx r = 0 (0xffff8000299bee30) #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:1281 #9 closef+0x192 sys/kern/kern_descrip.c:1265 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 Process 54869 (reaper) thread 0xffff8000ffffdc90 (251530) exclusive rwlock kmmaplk r = 0 (0xffffffff83aa2398) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1798 #4 km_free+0x87 sys/uvm/uvm_km.c:714 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1ca sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11083 12263K 12474K 166960K 12325 0 pcb 18 12K 12K 166960K 40 0 rtable 249 8K 10K 166960K 391 0 pf 35 17K 22K 166960K 79 0 ifaddr 43 7K 7K 166960K 52 0 ifgroup 55 2K 2K 166960K 72 0 sysctl 1 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1579 0 iov 0 0K 16K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1366 86K 86K 166960K 1585 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 13 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 294 0 sigio 0 0K 0K 166960K 3 0 proc 72 115K 196K 166960K 573 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 14 0 in_multi 99 7K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 392 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 151K 170K 166960K 4600 0 UVM aobj 10 2K 3K 166960K 13 0 pinsyscall 43 86K 104K 166960K 1441 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 7 0 NDP 12 0K 2K 166960K 32 0 temp 75 9088K 9154K 166960K 12380 0 kqueue 14 22K 26K 166960K 49 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 44 0 41 1 0 1 1 0 8 0 rtentry 176 115 0 3 6 0 6 6 0 8 0 unpcb 144 103 0 81 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 48 0 44 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 298 0 290 7 0 7 7 0 8 5 nd6 152 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 3 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 5 0 5 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pftag 88 3 0 2 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 28 0 0 1 0 1 1 0 8 0 pfstkey 128 28 0 0 1 0 1 1 0 8 0 pfstate 448 28 0 0 4 0 4 4 0 8 0 pfrule 1360 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 460 0 6 29 0 29 29 0 8 0 art_table 40 462 0 6 5 0 5 5 0 8 0 art_node 32 114 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 11 0 2 1 0 1 1 0 8 0 shmpl 112 10 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1863 0 391 93 0 93 93 0 8 0 ffsino 296 1863 0 391 114 0 114 114 0 8 0 nchpl 144 2280 0 574 64 0 64 64 0 8 0 vnodes 216 2118 0 0 118 0 118 118 0 8 0 namei 1024 7108 0 7108 2 0 2 2 0 8 2 percpumem 16 55 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1 kstatmem 264 34 0 8 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 10442 0 10442 10 2 8 8 1 8 8 plimitpl 152 49 0 31 1 0 1 1 0 8 0 sigapl 424 608 0 560 7 0 7 7 0 8 1 knotepl 120 331 0 0 11 0 11 11 0 8 0 kqueuepl 224 68 0 58 1 0 1 1 0 8 0 pipepl 344 168 0 141 3 0 3 3 0 8 0 fdescpl 528 592 0 560 3 0 3 3 0 8 0 filepl 160 2677 0 2446 15 0 15 15 0 8 5 lockfpl 104 46 0 44 1 0 1 1 0 8 0 lockfspl 48 24 0 22 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 227 0 214 1 0 1 1 0 8 0 zombiepl 144 562 0 560 1 0 1 1 0 8 0 processpl 1232 608 0 560 5 0 5 5 0 8 0 procpl 664 886 0 825 6 0 6 6 0 8 0 sockpl 752 453 0 420 11 0 11 11 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 145 0 0 10 0 10 10 0 8 0 bufpl 280 3906 0 106 272 0 272 272 0 8 0 anonpl 32 7458 0 0 61 0 61 61 0 246 0 amapchunkpl 152 13608 0 13049 30 0 30 30 0 158 8 amappl16 200 2376 0 2351 7 2 5 5 0 8 2 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 430 0 429 1 0 1 1 0 8 0 amappl13 176 123 0 111 1 0 1 1 0 8 0 amappl12 168 855 0 824 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 267 0 267 1 1 0 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 169 0 156 1 0 1 1 0 8 0 amappl6 120 164 0 162 1 0 1 1 0 8 0 amappl5 112 96 0 85 1 0 1 1 0 8 0 amappl4 104 294 0 274 1 0 1 1 0 8 0 amappl3 96 2532 0 2403 4 0 4 4 0 8 0 amappl2 88 539 0 475 2 0 2 2 0 8 0 amappl1 80 10368 0 9754 17 0 17 17 0 8 2 amappl 88 3845 0 3657 5 0 5 5 0 92 0 uvmvnodes 80 107 0 0 3 0 3 3 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 254 0 254 2 1 1 1 0 8 1 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 12 0 3 1 0 1 1 0 8 0 uaddrrnd 24 592 0 560 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 592 0 560 1 0 1 1 0 8 0 vmmpekpl 168 6769 0 6736 2 0 2 2 0 8 0 vmmpepl 168 46037 0 44049 100 0 100 100 0 357 8 vmsppl 488 591 0 560 5 0 5 5 0 8 0 rwobjpl 80 16218 0 15140 27 0 27 27 0 8 3 pdppl 4096 1191 0 1120 103 32 71 87 0 8 0 pvpl 32 16602 0 0 134 0 134 134 0 265 0 pmappl 256 591 0 560 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 280 0 35 8 0 8 8 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(ffffffff8399d020,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 mtx_enter(ffffffff8399d010) at mtx_enter+0x95 sys/kern/kern_lock.c:406 sleep_setup(ffff8000299bee80,220,ffffffff834c9602) at sleep_setup+0xed sys/kern/kern_synch.c:304 msleep_nsec(ffff8000299bee80,ffff8000299bee20,220,ffffffff834c9602,ffffffffffffffff) at msleep_nsec+0x10b sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff800001691000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e5f,81,2000,ffff80003abd9ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e5f,81,2000,ffff80003abd9ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c3f6fd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ef6d510,81,fffffd80097fd680,ffff80003abd9ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c607048,ffff80003abd9ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c607048,ffff80003abd9ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c607048,ffff80003abd9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806c607048,ffff80003abd9ca8) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c3f7230) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f7230) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x387d703f140, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 mtx_enter(ffff8000299bee20) at mtx_enter+0x375 sys/kern/kern_lock.c:455 clockintr_dispatch(ffff80002a213e60) 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 _rb_insert(ffffffff83753f18,fffffd807f7e2f18,fffffd806cc79890) at _rb_insert+0x718 rbe_rotate_right sys/kern/subr_tree.c:156 [inline] _rb_insert(ffffffff83753f18,fffffd807f7e2f18,fffffd806cc79890) at _rb_insert+0x718 rbe_insert_color sys/kern/subr_tree.c:192 [inline] _rb_insert(ffffffff83753f18,fffffd807f7e2f18,fffffd806cc79890) at _rb_insert+0x718 sys/kern/subr_tree.c:435 uaddr_bestfit_insert(ffffffff83aa2298,fffffd807f7e2f00,fffffd806cc79890) at uaddr_bestfit_insert+0x46 sys/uvm/uvm_addr.c:-1 uvm_mapent_free_insert(ffffffff83aa2298,fffffd807f7e2f00,fffffd806cc79890) at uvm_mapent_free_insert+0x11b sys/uvm/uvm_map.c:373 uvm_map_fix_space(ffffffff83aa2298,fffffd806cc79890,ffff80003c424000,ffff80003c42a000,0) at uvm_map_fix_space+0x5a3 sys/uvm/uvm_map.c:4993 uvm_mapent_mkfree(ffffffff83aa2298,fffffd806cc79b30,ffff80002a214178,ffff80002a214208,1) at uvm_mapent_mkfree+0x347 sys/uvm/uvm_map.c:1852 uvm_unmap_remove(ffffffff83aa2298,ffff80003c424000,ffff80003c42a000,ffff80002a214208,0,1,6ac8fe649035da53) at uvm_unmap_remove+0x76f sys/uvm/uvm_map.c:-1 uvm_unmap(ffffffff83aa2298,ffff80003c424000,ffff80003c42a000) at uvm_unmap+0xa7 vm_map_unlock_ln sys/uvm/uvm_map.c:-1 [inline] uvm_unmap(ffffffff83aa2298,ffff80003c424000,ffff80003c42a000) at uvm_unmap+0xa7 sys/uvm/uvm_map.c:1799 km_free(ffff80003c424000,6000,ffffffff835241c8,ffffffff83813c98) at km_free+0x87 sys/uvm/uvm_km.c:714 uvm_uarea_free(ffff8000323b1780) at uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 reaper(ffff8000ffffdc90) at reaper+0x1ca sys/kern/kern_exit.c:493 end trace frame: 0x0, count: -18