witness: lock order reversal: 1st 0xffff8000299dee00 &cq->cq_mtx (&cq->cq_mtx) 2nd 0xffffffff839602b8 &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+0x119 sys/kern/kern_synch.c:217 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 #4 dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x105 sys/dev/dt/dt_dev.c:232 #5 spec_close+0x45f sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x133 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+0x126 sys/kern/kern_descrip.c:1267 #9 closef+0x192 sys/kern/kern_descrip.c:1251 #10 fdfree+0x116 sys/kern/kern_descrip.c:1182 #11 exit1+0x59c sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 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+0x172 x86_atomic_clearbits_u32 machine/atomic.h:-1 [inline] #2 mi_switch+0x172 sys/kern/sched_bsd.c:374 #3 ast+0x165 mi_ast sys/sys/syscall_mi.h:252 [inline] #3 ast+0x165 sys/arch/amd64/amd64/trap.c:712 #4 intr_user_exit+0x3c 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(ffffffff839602b8,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839602a8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffff8000299dee50,220,ffffffff833ae6c3) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffff8000299dee50,ffff8000299dedf0,220,ffffffff833ae6c3,ffffffffffffffff) at msleep_nsec+0x119 sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff80000156a000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,89,2000,ffff80003c44af88) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,89,2000,ffff80003c44af88) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c43ce00) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806334e610,89,fffffd80097fb4e0,ffff80003c44af88) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80636cb548,ffff80003c44af88) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80636cb548,ffff80003c44af88) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80636cb548,ffff80003c44af88) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80636cb548,ffff80003c44af88) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44af88) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44af88,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44af88,ffff80003c43d170,ffff80003c43d0c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43d170) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43d170) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76fb296b9ff0, count: -17 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c43cb00 rbx 0xfffffd8004703330 rdx 0 rcx 0xffff80003c44af88 rax 0xffffffff837d8ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c43c9e0 r9 0x8080808080808080 r10 0x7ea6e9399222ed25 r11 0x3e383606c43badff r12 0 r13 0xfffffd8003f56300 r14 0x3 r15 0xffffffff rip 0xffffffff82bbf175 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c43caf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=463195 pid=43701 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c44af88 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c44b9c8,0xffff80003c44ad08 process=0xffff80003b016bb8 user=0xffff80003c438000, vmspace=0xfffffd806b97a3d8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55397 43421 35423 0 7 0 syz-executor 3614 25518 33554 0 3 0x82 sysctllk sshd-session 48458 89478 53605 0 3 0x80 nanoslp syz-executor 48458 421180 53605 0 3 0x4000080 ttyout syz-executor 34292 105367 76342 0 3 0x80 nanoslp syz-executor 34292 315525 76342 0 3 0x4000080 fsleep syz-executor 34292 471920 76342 0 3 0x4000080 sysctllk syz-executor 34292 295047 76342 0 3 0x4000080 fsleep syz-executor 28519 243147 50453 0 3 0x80 nanoslp syz-executor 28519 296612 50453 0 3 0x4000080 sbwait syz-executor 28519 462962 50453 0 3 0x4000080 fsleep syz-executor 80626 88606 0 0 3 0x14200 acct acct 31301 56416 72034 0 3 0x80 nanoslp syz-executor 31301 387529 72034 0 3 0x4000080 sysctllk syz-executor 31301 74761 72034 0 3 0x4000080 sysctllk syz-executor 31301 425984 72034 0 3 0x4000080 fsleep syz-executor 23840 363924 8942 0 3 0x80 nanoslp syz-executor 23840 365275 8942 0 3 0x4000080 sysctllk syz-executor 23840 343466 8942 0 3 0x4000080 fsleep syz-executor 23840 305495 8942 0 3 0x4000080 fsleep syz-executor 24448 469002 33554 0 3 0x82 sysctllk sshd-session 92609 39862 55800 0 3 0 vmmapbsy syz-executor 92609 44642 55800 0 3 0x4000000 vmmapbsy syz-executor 92609 204335 55800 0 3 0x4000000 fltagain2 syz-executor 92609 516017 55800 0 3 0x4000000 fltagain2 syz-executor 41754 217305 0 0 3 0x14200 bored sosplice 76342 151535 50744 0 3 0x82 nanoslp syz-executor 55800 67412 50744 0 3 0x82 wait syz-executor 50453 431674 50744 0 3 0x82 nanoslp syz-executor 8942 313355 50744 0 3 0x82 nanoslp syz-executor 73387 369197 50744 0 3 0x82 nanoslp syz-executor 53605 447065 50744 0 3 0x82 nanoslp syz-executor 35423 31231 50744 0 3 0x82 nanoslp syz-executor 72034 346368 50744 0 3 0x82 nanoslp syz-executor 50744 451076 76507 0 3 0x82 kqread syz-executor 76507 88231 48160 0 3 0x10008a sigsusp ksh 48160 224974 99102 0 3 0x98 kqread sshd-session 99102 140921 33554 0 3 0x92 kqread sshd-session 68072 241793 1 0 3 0x100083 ttyin getty 33554 513589 1 0 3 0x88 kqread sshd 41088 302592 20653 74 3 0x1100092 bpf pflogd 20653 380149 1 0 3 0x80 sbwait pflogd 92914 26214 24960 73 3 0x1100090 kqread syslogd 24960 474793 1 0 3 0x100082 sbwait syslogd 28135 256513 1 0 3 0x100080 kqread resolvd 35234 184157 22720 77 3 0x100092 kqread dhcpleased 28052 115562 22720 77 3 0x100092 kqread dhcpleased 22720 394596 1 0 3 0x80 kqread dhcpleased 43079 402465 0 0 3 0x14200 bored smr 66283 162758 0 0 3 0x14200 pgzero zerothread 85203 24989 0 0 3 0x14200 aiodoned aiodoned 53983 73245 0 0 3 0x14200 syncer update 59773 209566 0 0 3 0x14200 cleaner cleaner 94016 340288 0 0 3 0x14200 reaper reaper 61971 131195 0 0 3 0x14200 pgdaemon pagedaemon 82076 397335 0 0 3 0x14200 bored viomb 73126 146328 0 0 3 0x40014200 acpi0 acpi0 82830 503642 0 0 3 0x40014200 idle1 71835 300713 0 0 3 0x14200 bored softnet7 70231 244009 0 0 3 0x14200 bored softnet6 69988 492623 0 0 3 0x14200 bored softnet5 13220 330644 0 0 3 0x14200 bored softnet4 95401 104161 0 0 3 0x14200 bored softnet3 97824 210160 0 0 3 0x14200 bored softnet2 98713 95735 0 0 3 0x14200 bored softnet1 83046 165270 0 0 3 0x14200 bored softnet0 33965 262564 0 0 3 0x14200 bored systqmp 37458 292036 0 0 3 0x14200 bored systq 14457 175516 0 0 3 0x14200 tmoslp softclockmp 80539 177041 0 0 3 0x40014200 tmoslp softclock 17834 501055 0 0 3 0x40014200 idle0 1 193081 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 (0xffff8000299dee00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb 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:576 #5 dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #5 dtclose+0x105 sys/dev/dt/dt_dev.c:232 #6 spec_close+0x45f sys/kern/spec_vnops.c:-1 #7 VOP_CLOSE+0x133 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+0x126 sys/kern/kern_descrip.c:1267 #10 closef+0x192 sys/kern/kern_descrip.c:1251 #11 fdfree+0x116 sys/kern/kern_descrip.c:1182 #12 exit1+0x59c sys/kern/kern_exit.c:215 #13 sys_exit+0x1a sys/kern/kern_exit.c:-1 #14 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #15 Xsyscall+0x128 Process 55397 (syz-executor) thread 0xffff80003c44acf8 (43421) exclusive rwlock uobjlk r = 0 (0xfffffd806c67aed0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1236 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #4 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806eefe2e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x36e sys/kern/kern_rwlock.c:397 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 92609 (syz-executor) thread 0xffff80003c44a7d8 (44642) exclusive rrwlock inode r = 0 (0xfffffd806b86f520) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 92609 (syz-executor) thread 0xffff80003c44a2b8 (516017) exclusive rwlock sysctllk r = 0 (0xffffffff8385f608) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:191 #3 kern_sysctl_dirs+0x2e0 sys/kern/kern_sysctl.c:440 #4 kern_sysctl+0x167 sys/kern/kern_sysctl.c:526 #5 sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11132K 11882K 166960K 12152 0 pcb 18 12K 12K 166960K 53 0 rtable 206 7K 8K 166960K 339 0 pf 36 18K 21K 166960K 63 0 ifaddr 43 7K 7K 166960K 48 0 ifgroup 55 2K 2K 166960K 64 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1636 0 iov 0 0K 24K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1450 91K 91K 166960K 1778 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 9 0K 0K 166960K 9 0 dirhash 12 2K 3K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 381 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 140K 166960K 556 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 30 0 in_multi 99 7K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 2 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 412 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 268 161K 170K 166960K 5139 0 UVM aobj 9 2K 2K 166960K 9 0 pinsyscall 47 94K 104K 166960K 1462 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 12 0K 2K 166960K 30 0 temp 46 8672K 8737K 166960K 14859 0 kqueue 14 22K 26K 166960K 68 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 120 121 0 118 2 1 1 2 0 8 0 rtentry 176 100 0 12 5 0 5 5 0 8 0 unpcb 144 261 0 238 3 0 3 3 0 8 2 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 736 77 0 69 2 0 2 2 0 8 1 arp 128 10 0 0 1 0 1 1 0 8 0 inpcb 328 279 0 266 4 1 3 4 0 8 1 nd6 144 19 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 5 0 2 1 0 1 1 0 8 0 pffrent 40 7 0 4 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 4 0 1 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 24 0 1 1 0 1 1 0 8 0 pfstkey 128 24 0 1 1 0 1 1 0 8 0 pfstate 384 24 0 1 3 0 3 3 0 8 0 pfrule 1344 25 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 473 0 41 30 0 30 30 0 8 1 art_table 40 475 0 41 5 0 5 5 0 8 0 art_node 32 100 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2031 0 523 96 0 96 96 0 8 0 ffsino 288 2031 0 523 109 0 109 109 0 8 0 nchpl 144 2559 0 866 64 0 64 64 0 8 0 uvmvnodes 80 2445 0 0 50 0 50 50 0 8 0 vnodes 216 2445 0 0 136 0 136 136 0 8 0 namei 1024 8338 0 8338 2 1 1 2 0 8 1 percpumem 16 51 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 30 0 4 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 18393 0 18393 3 2 1 2 1 8 1 plimitpl 152 68 0 49 1 0 1 1 0 8 0 sigapl 424 680 0 622 7 0 7 7 0 8 0 knotepl 120 316 0 0 10 0 10 10 0 8 0 kqueuepl 224 140 0 129 3 1 2 3 0 8 1 pipepl 336 151 0 124 6 0 6 6 0 8 3 fdescpl 520 656 0 622 3 0 3 3 0 8 0 filepl 160 3419 0 3182 15 0 15 15 0 8 4 lockfpl 104 327 0 323 2 0 2 2 0 8 1 lockfspl 48 160 0 156 1 0 1 1 0 8 0 sessionpl 144 24 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 15 1 0 1 1 0 8 0 ucredpl 104 293 0 280 1 0 1 1 0 8 0 zombiepl 144 623 0 622 1 0 1 1 0 8 0 processpl 1240 680 0 622 5 0 5 5 0 8 0 procpl 656 1152 0 1079 7 0 7 7 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 728 671 0 632 10 1 9 10 0 8 5 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 32 0 0 4 0 4 4 0 8 0 mtagpl 96 51 0 0 2 0 2 2 0 8 0 mbufpl 256 1144 0 0 72 0 72 72 0 8 0 bufpl 280 8845 0 2703 439 0 439 439 0 8 0 anonpl 32 13258 0 0 107 0 107 107 0 246 0 amapchunkpl 152 15983 0 15447 33 2 31 31 0 158 9 amappl16 200 3453 0 3405 27 11 16 26 0 8 8 amappl15 192 51 0 51 1 1 0 1 0 8 0 amappl14 184 146 0 132 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1296 0 1265 3 1 2 2 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 49 0 48 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 110 0 96 1 0 1 1 0 8 0 amappl6 120 177 0 172 1 0 1 1 0 8 0 amappl5 112 130 0 121 1 0 1 1 0 8 0 amappl4 104 308 0 290 1 0 1 1 0 8 0 amappl3 96 2978 0 2857 4 0 4 4 0 8 0 amappl2 88 641 0 572 2 0 2 2 0 8 0 amappl1 80 9445 0 8786 15 1 14 15 0 8 0 amappl 88 4425 0 4243 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 128 253 0 253 1 1 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 656 0 622 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 656 0 622 1 0 1 1 0 8 0 vmmpekpl 168 7088 0 7048 3 0 3 3 0 8 0 vmmpepl 168 49193 0 47014 109 0 109 109 0 357 12 vmsppl 480 655 0 622 5 0 5 5 0 8 0 rwobjpl 72 19206 0 15719 64 0 64 64 0 8 0 pdppl 4096 1320 0 1244 102 26 76 88 0 8 0 pvpl 32 22419 0 0 181 0 181 181 0 265 0 pmappl 256 655 0 622 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 455 0 30 13 0 13 13 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(ffffffff839602b8,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1 mtx_enter(ffffffff839602a8) at mtx_enter+0x4a sys/kern/kern_lock.c:260 sleep_setup(ffff8000299dee50,220,ffffffff833ae6c3) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 msleep_nsec(ffff8000299dee50,ffff8000299dedf0,220,ffffffff833ae6c3,ffffffffffffffff) at msleep_nsec+0x119 sys/kern/kern_synch.c:217 dt_ioctl_record_stop(ffff80000156a000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,89,2000,ffff80003c44af88) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,89,2000,ffff80003c44af88) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c43ce00) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806334e610,89,fffffd80097fb4e0,ffff80003c44af88) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80636cb548,ffff80003c44af88) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80636cb548,ffff80003c44af88) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80636cb548,ffff80003c44af88) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80636cb548,ffff80003c44af88) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c44af88) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c44af88,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c44af88,ffff80003c43d170,ffff80003c43d0c0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c43d170) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43d170) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76fb296b9ff0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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+0x2e kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_const_cmp4(0,2) at __sanitizer_cov_trace_const_cmp4+0x2e sys/dev/kcov.c:230 mtx_enter(ffff8000299dedf0) at mtx_enter+0xaf sys/kern/kern_lock.c:264 clockintr_dispatch(ffff80003c4929f0) at clockintr_dispatch+0x3b4 sys/kern/kern_clockintr.c:215 lapic_clockintr(0,0) at lapic_clockintr+0x51 sys/arch/amd64/amd64/lapic.c:489 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_const_cmp4(ffffffff836b65a0,fffffd806d4d8ad0) at __sanitizer_cov_trace_const_cmp4+0x3f sys/dev/kcov.c:231 uvm_pagelookup(fffffd806d4d8ac0,fc000) at uvm_pagelookup+0x54 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd806d4d8ac0,fc000) at uvm_pagelookup+0x54 sys/uvm/uvm_page.c:1214 uvn_get(fffffd806d4d8ac0,fb000,ffff80003c492e70,ffff80003c492cd4,3,4,9f40994d87054bd0,ffff80003c492f28) at uvn_get+0x486 sys/uvm/uvm_vnode.c:-1 uvm_fault_lower_lookup(ffff80003c492ef0,ffff80003c492f28,ffff80003c492e70) at uvm_fault_lower_lookup+0x10d sys/uvm/uvm_fault.c:1238 uvm_fault_lower(ffff80003c492ef0,ffff80003c492f28,ffff80003c492e70) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 uvm_fault(fffffd806eefe1e8,a2281ffb000,0,4) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c493080,a2281ffbc90) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c493080) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7a327d12f1e0, count: -17