witness: lock order reversal: 1st 0xfffffd806bed8658 vmmaplk (&map->lock) 2nd 0xfffffd8070fb9e78 inode (&ip->i_lock) lock order [1] vmmaplk (&map->lock) -> [2] inode (&ip->i_lock) #0 rw_enter+0x122 #1 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #2 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #3 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #4 vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 #5 vndstrategy+0x4ff sys/dev/vnd.c:342 #6 physio+0x2f6 sys/kern/kern_physio.c:162 #7 spec_read+0x155 sys/kern/spec_vnops.c:215 #8 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #9 vn_read+0x17b sys/kern/vfs_vnops.c:369 #10 dofilereadv+0x230 sys/kern/sys_generic.c:252 #11 sys_readv+0xd8 sys/kern/sys_generic.c:199 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 lock order [2] inode (&ip->i_lock) -> [1] vmmaplk (&map->lock) #0 rw_enter_read+0xab sys/kern/kern_rwlock.c:112 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1819 #2 uvm_fault_check+0x49 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf5 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 ffs_read+0x422 sys/ufs/ffs/ffs_vnops.c:254 #9 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #10 vn_rdwr+0x15b #11 vmcmd_map_readvn+0x142 sys/kern/exec_subr.c:249 #12 exec_process_vmcmds+0xfb sys/kern/exec_subr.c:139 #13 sys_execve+0xbe4 sys/kern/kern_exec.c:468 #14 start_init+0x3c6 sys/kern/init_main.c:714 #15 proc_trampoline+0x10 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:437 witness_checkorder(fffffd8070fb9e78,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8070fb9e68,1) at rw_enter+0x122 rrw_enter(fffffd8070fb9e68,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806aea72a0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806aea72a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd806aea72a0,ffff800011a26080,1f,0,1,8ab74d015713cd27,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80690325b0) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff811845e0,2902,8000,ffffffff81612050,ffff8000372564e0) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000372562d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e67feb8,ffff8000372564e0,0,fffffd807f7d3478) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806b7a3008,ffff8000372564e0,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002f57c548,6,ffff8000372564e0,0,ffff8000372565a0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff80002f57c548,ffff800037256650,ffff8000372565a0) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff800037256650) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037256650) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa619f62b2b0, count: -16 ddb{0}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff800037255d90 rbx 0xfffffd80042c1690 rdx 0xffff8000012a27c0 rcx 0xffff80002f57c548 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff800037255c70 r9 0x8080808080808080 r10 0x60cadd756c8c39d0 r11 0x243986a1c7d313ed r12 0 r13 0xfffffd8003ad9e00 r14 0x3 r15 0xffffffff rip 0xffffffff8292af95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037255d80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=291932 pid=83010 tcnt=2 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=0xffff80002f57c7d0,0xffff80002f57d200 process=0xffff8000fffe8488 user=0xffff800037251000, vmspace=0xfffffd806bed8560 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83010 119321 58440 0 3 0 vmmaplk syz-executor *83010 291932 58440 0 7 0x4000000 syz-executor 64853 480908 56324 0 2 0 syz-executor 64853 419453 56324 0 3 0x4000080 netcon syz-executor 31152 258626 86023 0 2 0 syz-executor 31152 480646 86023 0 3 0x4000080 netacc syz-executor 31152 264307 86023 0 3 0x4000080 msgwait syz-executor 31152 425583 86023 0 3 0x4000080 fsleep syz-executor 70925 409483 15207 0 2 0 syz-executor 70925 18658 15207 0 3 0x4000080 fsleep syz-executor 3260 353560 57105 0 2 0 syz-executor 3260 241565 57105 0 3 0x4000080 fsleep syz-executor 3260 520744 57105 0 3 0x4000080 fsleep syz-executor 33213 459224 11935 0 3 0x80 nanoslp syz-executor 33213 332590 11935 0 3 0x4000080 dtread syz-executor 33213 73490 11935 0 3 0x4000080 fsleep syz-executor 90299 119776 1 0 3 0x100083 ttyin getty 15355 477440 0 0 3 0x14280 nfsidl nfsio 81187 215699 0 0 3 0x14280 nfsidl nfsio 36512 475906 0 0 3 0x14280 nfsidl nfsio 17258 130880 0 0 3 0x14280 nfsidl nfsio 63441 281780 0 0 3 0x14280 nfsidl nfsio 69188 153949 0 0 3 0x14280 nfsidl nfsio 50511 210381 0 0 3 0x14280 nfsidl nfsio 2843 209362 0 0 3 0x14280 nfsidl nfsio 75496 95136 0 0 3 0x14280 nfsidl nfsio 82750 486372 0 0 3 0x14280 nfsidl nfsio 36981 206639 0 0 3 0x14280 nfsidl nfsio 21556 330960 0 0 3 0x14280 nfsidl nfsio 61171 32291 0 0 3 0x14280 nfsidl nfsio 32209 111275 0 0 3 0x14280 nfsidl nfsio 87871 132382 0 0 3 0x14280 nfsidl nfsio 4908 78781 0 0 3 0x14280 nfsidl nfsio 67468 74128 0 0 3 0x14280 nfsidl nfsio 64447 188529 0 0 3 0x14280 nfsidl nfsio 50872 453849 0 0 3 0x14280 nfsidl nfsio 85682 54351 0 0 3 0x14280 nfsidl nfsio 28396 404694 0 0 3 0x14200 bored sosplice 15207 337187 10488 0 3 0x82 nanoslp syz-executor 57105 118446 10488 0 3 0x82 nanoslp syz-executor 28389 264466 10488 0 2 0x2 syz-executor 58440 143816 10488 0 3 0x82 nanoslp syz-executor 60589 223605 10488 0 3 0x82 wait syz-executor 56324 181225 10488 0 3 0x82 nanoslp syz-executor 86023 26093 10488 0 3 0x82 nanoslp syz-executor 11935 95337 10488 0 7 0x2 syz-executor 10488 33679 59885 0 3 0x82 kqread syz-executor 59885 65984 5135 0 3 0x10008a sigsusp ksh 5135 354696 97667 0 3 0x98 kqread sshd-session 97667 101355 25970 0 3 0x92 kqread sshd-session 25970 312690 1 0 3 0x88 kqread sshd 85701 139797 55903 74 3 0x1100092 bpf pflogd 55903 101147 1 0 3 0x80 sbwait pflogd 97501 126207 76125 73 3 0x1100090 kqread syslogd 76125 214057 1 0 3 0x100082 sbwait syslogd 1136 53652 1 0 3 0x100080 kqread resolvd 62184 398294 79919 77 3 0x100092 kqread dhcpleased 19998 359003 79919 77 3 0x100092 kqread dhcpleased 79919 320487 1 0 3 0x80 kqread dhcpleased 2139 70794 0 0 3 0x14200 bored smr 73501 88683 0 0 2 0x14200 zerothread 52881 135384 0 0 3 0x14200 aiodoned aiodoned 209 116677 0 0 3 0x14200 syncer update 7516 482963 0 0 3 0x14200 cleaner cleaner 16801 508045 0 0 3 0x14200 reaper reaper 88104 208718 0 0 3 0x14200 pgdaemon pagedaemon 66646 343697 0 0 3 0x14200 bored viomb 59124 160958 0 0 3 0x40014200 acpi0 acpi0 53686 34830 0 0 3 0x40014200 idle1 2009 201104 0 0 3 0x14200 bored softnet3 67946 204718 0 0 3 0x14200 bored softnet2 28543 520843 0 0 3 0x14200 bored softnet1 23652 514320 0 0 3 0x14200 bored softnet0 30903 130629 0 0 3 0x14200 bored systqmp 93434 484445 0 0 3 0x14200 bored systq 48727 276532 0 0 3 0x14200 tmoslp softclockmp 60451 193441 0 0 3 0x40014200 tmoslp softclock 20433 84550 0 0 3 0x40014200 idle0 1 497157 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 83010 (syz-executor) thread 0xffff80002f57c548 (291932) shared rwlock vmmaplk r = 0 (0xfffffd806bed8658) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:172 #2 physio+0x277 sys/kern/kern_physio.c:139 #3 spec_read+0x155 sys/kern/spec_vnops.c:215 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_read+0x17b sys/kern/vfs_vnops.c:369 #6 dofilereadv+0x230 sys/kern/sys_generic.c:252 #7 sys_readv+0xd8 sys/kern/sys_generic.c:199 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83561540) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vn_read+0x56 sys/kern/vfs_vnops.c:351 #2 dofilereadv+0x230 sys/kern/sys_generic.c:252 #3 sys_readv+0xd8 sys/kern/sys_generic.c:199 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 28389 (syz-executor) thread 0xffff800029fd8518 (264466) exclusive rrwlock inode r = 0 (0xfffffd8070f305f0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ce36098) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 11183K 11571K 166960K 11681 0 pcb 18 12K 12K 166960K 68 0 rtable 190 13K 14K 166960K 381 0 pf 39 18K 273K 166960K 57 0 ifaddr 41 6K 7K 166960K 51 0 ifgroup 63 2K 2K 166960K 65 0 sysctl 3 0K 0K 166960K 5 0 counters 68 36K 36K 166960K 70 0 ioctlops 0 0K 4K 166960K 1518 0 iov 0 0K 16K 166960K 82 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1375 87K 87K 166960K 1644 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 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 503 0 sigio 0 0K 0K 166960K 9 0 proc 72 91K 128K 166960K 576 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 37 0 in_multi 84 6K 7K 166960K 123 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 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 404 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 254 73K 78K 166960K 6326 0 UVM aobj 13 6K 6K 166960K 14 0 pinsyscall 42 84K 110K 166960K 1581 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 37 0 NDP 14 0K 2K 166960K 32 0 temp 61 6824K 6903K 166960K 21285 0 kqueue 13 20K 24K 166960K 73 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 59 0 56 1 0 1 1 0 8 0 rtentry 112 117 0 31 4 0 4 4 0 8 0 unpcb 144 475 0 458 6 0 6 6 0 8 5 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 100 0 93 1 0 1 1 0 8 0 arp 120 19 0 2 1 0 1 1 0 8 0 inpcb 336 359 0 344 2 0 2 2 0 8 0 nd6 136 25 0 5 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 1 0 1 1 0 1 1 0 8 1 pfstscr 40 3 0 3 2 1 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfstitem 24 43 0 1 1 0 1 1 0 8 0 pfstkey 128 46 0 4 2 0 2 2 0 8 0 pfstate 376 45 0 3 5 0 5 5 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 544 0 159 29 1 28 29 0 8 2 art_table 32 545 0 159 4 0 4 4 0 8 0 art_node 16 115 0 38 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 8 1 0 1 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2199 0 693 95 0 95 95 0 8 0 ffsino 272 2199 0 693 101 0 101 101 0 8 0 nchpl 144 2946 0 2404 63 34 29 63 0 8 6 uvmvnodes 80 2467 0 0 51 0 51 51 0 8 0 vnodes 216 2467 0 0 138 0 138 138 0 8 0 namei 1024 9411 0 9411 1 0 1 1 0 8 1 percpumem 16 49 0 1 1 0 1 1 0 8 0 kstatmem 264 30 0 2 2 0 2 2 0 8 0 scxspl 216 8954 0 8954 9 3 6 8 1 8 6 plimitpl 152 74 0 56 1 0 1 1 0 8 0 sigapl 424 824 0 754 8 0 8 8 0 8 0 futexpl 64 5861 0 5856 1 0 1 1 0 8 0 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 216 127 0 117 3 0 3 3 0 8 2 pipepl 320 156 0 129 3 0 3 3 0 8 0 fdescpl 496 785 0 754 5 0 5 5 0 8 0 filepl 152 4006 0 3741 16 0 16 16 0 8 4 lockfpl 104 120 0 117 1 0 1 1 0 8 0 lockfspl 48 53 0 50 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 38 0 21 1 0 1 1 0 8 0 ucredpl 104 438 0 424 1 0 1 1 0 8 0 zombiepl 144 755 0 754 1 0 1 1 0 8 0 processpl 1160 824 0 754 6 0 6 6 0 8 0 procpl 648 1470 0 1390 8 0 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 664 907 0 872 14 3 11 14 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 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 146 0 0 19 0 19 19 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 152 0 0 10 0 10 10 0 8 0 bufpl 280 3104 0 99 215 0 215 215 0 8 0 anonpl 24 177054 0 171962 56 1 55 56 0 185 19 amapchunkpl 152 20510 0 19900 31 0 31 31 0 158 6 amappl16 200 4454 0 4406 16 4 12 16 0 8 7 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 40 0 40 1 1 0 1 0 8 0 amappl12 168 1431 0 1400 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 24 0 24 1 1 0 1 0 8 0 amappl9 144 153 0 153 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 113 0 101 1 0 1 1 0 8 0 amappl6 120 164 0 162 1 0 1 1 0 8 0 amappl5 112 139 0 128 1 0 1 1 0 8 0 amappl4 104 311 0 292 1 0 1 1 0 8 0 amappl3 96 3873 0 3770 3 0 3 3 0 8 0 amappl2 88 1064 0 979 3 0 3 3 0 8 0 amappl1 80 8902 0 8333 15 1 14 15 0 8 0 amappl 88 5919 0 5727 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 785 0 754 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 785 0 754 1 0 1 1 0 8 0 vmmpekpl 168 7901 0 7860 3 0 3 3 0 8 0 vmmpepl 168 55993 0 54082 96 1 95 96 0 357 9 vmsppl 448 784 0 754 6 2 4 5 0 8 0 rwobjpl 56 21619 0 18161 49 0 49 49 0 8 0 pdppl 4096 1577 0 1508 101 30 71 85 0 8 2 pvpl 32 15808 0 0 129 1 128 128 0 265 0 pmappl 248 784 0 754 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 381 0 36 11 0 11 11 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:437 witness_checkorder(fffffd8070fb9e78,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8070fb9e68,1) at rw_enter+0x122 rrw_enter(fffffd8070fb9e68,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806aea72a0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806aea72a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd806aea72a0,ffff800011a26080,1f,0,1,8ab74d015713cd27,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80690325b0) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff811845e0,2902,8000,ffffffff81612050,ffff8000372564e0) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000372562d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e67feb8,ffff8000372564e0,0,fffffd807f7d3478) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806b7a3008,ffff8000372564e0,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002f57c548,6,ffff8000372564e0,0,ffff8000372565a0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff80002f57c548,ffff800037256650,ffff8000372565a0) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff800037256650) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037256650) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa619f62b2b0, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83561338) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83561338) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a09cc20) at syscall+0x2cc mi_syscall sys/sys/syscall_mi.h:155 [inline] syscall(ffff80002a09cc20) at syscall+0x2cc sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d7c3abe6950, count: -6