witness: lock order reversal: 1st 0xfffffd8069d169d8 vmmaplk (&map->lock) 2nd 0xfffffd8064aca810 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(fffffd8064aca810,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8064aca800,1) at rw_enter+0x122 rrw_enter(fffffd8064aca800,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8064a67b18,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8064a67b18,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd8064a67b18,ffff800011a26440,3f,0,1,b595767ca969449d,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd8060083388) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff8210a140,2902,8000,ffffffff81005cc0,ffff8000371dfe80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000371dfc70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0afde0,ffff8000371dfe80,0,fffffd807f7d33a8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd8064afb578,ffff8000371dfe80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2530,7,ffff8000371dfe80,0,ffff8000371dff40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff2530,ffff8000371dfff0,ffff8000371dff40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff8000371dfff0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371dfff0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x342620cf460, count: -16 ddb{0}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff8000371df730 rbx 0xfffffd80042c6b58 rdx 0xffff800001290b00 rcx 0xffff8000ffff2530 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff8000371df610 r9 0x8080808080808080 r10 0xd8e40d6e3adaf6a0 r11 0xdc104eb10be6870e r12 0 r13 0xfffffd8003adee00 r14 0x3 r15 0xffffffff rip 0xffffffff81ac00e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371df720 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=54336 pid=63751 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=0xffff8000ffff2020,0xffffffff836345a0 process=0xffff8000372956b0 user=0xffff8000371db000, vmspace=0xfffffd8069d168e0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51513 314363 59136 0 7 0 syz-executor 51513 52014 59136 0 2 0x4000000 syz-executor 16810 489072 46635 0 2 0 syz-executor 16810 339682 46635 0 2 0x4000000 syz-executor 62196 24565 92240 0 2 0 syz-executor 62196 240096 92240 0 3 0x4000080 fsleep syz-executor 63751 159214 86508 0 2 0 syz-executor 63751 298134 86508 0 3 0x4000080 rest syz-executor *63751 54336 86508 0 7 0x4000000 syz-executor 56876 485720 69021 0 3 0x80 nanoslp syz-executor 56876 238411 69021 0 3 0x4000080 ttyin syz-executor 56876 122096 69021 0 3 0x4000080 fsleep syz-executor 83358 463050 0 0 3 0x14280 nfsidl nfsio 53641 7632 0 0 3 0x14280 nfsidl nfsio 66161 456080 0 0 3 0x14280 nfsidl nfsio 73333 799 0 0 3 0x14280 nfsidl nfsio 85813 232374 0 0 3 0x14280 nfsidl nfsio 91212 212429 0 0 3 0x14280 nfsidl nfsio 88121 514206 0 0 3 0x14280 nfsidl nfsio 38572 258833 0 0 3 0x14280 nfsidl nfsio 40118 81117 0 0 3 0x14280 nfsidl nfsio 10230 168678 0 0 3 0x14280 nfsidl nfsio 90848 406210 0 0 3 0x14280 nfsidl nfsio 60721 73623 0 0 3 0x14280 nfsidl nfsio 55712 171962 0 0 3 0x14280 nfsidl nfsio 62046 251534 0 0 3 0x14280 nfsidl nfsio 83654 337530 0 0 3 0x14280 nfsidl nfsio 71873 345960 0 0 3 0x14280 nfsidl nfsio 46495 154843 0 0 3 0x14280 nfsidl nfsio 85344 316103 0 0 3 0x14280 nfsidl nfsio 82876 147499 0 0 3 0x14280 nfsidl nfsio 66905 271691 0 0 3 0x14280 nfsidl nfsio 52816 416081 0 0 3 0x14200 bored sosplice 46635 116810 46567 0 3 0x82 nanoslp syz-executor 92240 31346 46567 0 3 0x82 nanoslp syz-executor 59136 353184 46567 0 3 0x82 nanoslp syz-executor 69021 96962 46567 0 3 0x82 nanoslp syz-executor 62548 515446 46567 0 2 0x2 syz-executor 99953 56924 46567 0 3 0x82 nanoslp syz-executor 86508 57922 46567 0 3 0x82 nanoslp syz-executor 94523 327029 46567 0 3 0x82 nanoslp syz-executor 46567 20199 7858 0 3 0x82 kqread syz-executor 7858 49082 78660 0 3 0x10008a sigsusp ksh 78660 412213 30604 0 3 0x98 kqread sshd-session 30604 316159 13272 0 3 0x92 kqread sshd-session 66992 394343 1 0 3 0x100083 ttyopn getty 13272 200787 1 0 3 0x88 kqread sshd 79577 128298 63413 74 3 0x1100092 bpf pflogd 63413 280733 1 0 3 0x80 sbwait pflogd 39338 426965 48770 73 3 0x1100090 kqread syslogd 48770 252391 1 0 3 0x100082 sbwait syslogd 760 314578 1 0 3 0x100080 kqread resolvd 47488 26466 52003 77 3 0x100092 kqread dhcpleased 24260 250489 52003 77 3 0x100092 kqread dhcpleased 52003 463010 1 0 3 0x80 kqread dhcpleased 72908 413565 0 0 3 0x14200 bored smr 85456 285847 0 0 2 0x14200 zerothread 97830 323073 0 0 3 0x14200 aiodoned aiodoned 56759 151170 0 0 3 0x14200 syncer update 51399 413815 0 0 3 0x14200 cleaner cleaner 18263 279094 0 0 3 0x14200 reaper reaper 34564 303002 0 0 3 0x14200 pgdaemon pagedaemon 83296 414166 0 0 3 0x14200 bored viomb 50437 458123 0 0 3 0x40014200 acpi0 acpi0 58042 305036 0 0 3 0x40014200 idle1 51815 243593 0 0 3 0x14200 bored softnet3 85952 204441 0 0 3 0x14200 bored softnet2 23374 298641 0 0 3 0x14200 bored softnet1 9912 57229 0 0 3 0x14200 bored softnet0 50267 352583 0 0 3 0x14200 bored systqmp 3759 267068 0 0 3 0x14200 bored systq 41299 455060 0 0 3 0x14200 tmoslp softclockmp 79253 393911 0 0 3 0x40014200 tmoslp softclock 40724 393045 0 0 3 0x40014200 idle0 1 497033 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 16810 (syz-executor) thread 0xffff8000ffff1468 (339682) exclusive rrwlock inode r = 0 (0xfffffd806ddcf2c8) #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+0x1a72 sys/ufs/ufs/ufs_lookup.c:520 #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 dorenameat+0x145 sys/kern/vfs_syscalls.c:2990 #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 (0xfffffd806dd851a8) #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 dorenameat+0x145 sys/kern/vfs_syscalls.c:2990 #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 Process 63751 (syz-executor) thread 0xffff8000ffff2530 (54336) shared rwlock vmmaplk r = 0 (0xfffffd8069d169d8) #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 (0xffffffff835a0b68) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10227 11198K 15361K 166960K 12491 0 pcb 21 14K 15K 166960K 159 0 rtable 235 7K 7K 166960K 459 0 pf 37 18K 20K 166960K 119 0 ifaddr 44 7K 8K 166960K 67 0 ifgroup 55 2K 2K 166960K 106 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 37K 166960K 92 0 ioctlops 0 0K 4K 166960K 1675 0 iov 0 0K 16K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1355 85K 86K 166960K 2013 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 42 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 915 0 sigio 0 0K 0K 166960K 11 0 proc 72 91K 140K 166960K 612 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 0 0K 0K 166960K 146 0 in_multi 103 7K 7K 166960K 137 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 806 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 240 73K 87K 166960K 10319 0 UVM aobj 22 2K 2K 166960K 27 0 pinsyscall 42 84K 104K 166960K 2024 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 32 0 NDP 13 0K 1K 166960K 45 0 temp 60 6823K 6888K 166960K 41054 0 kqueue 14 22K 34K 166960K 161 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 120 110 0 107 2 0 2 2 0 8 1 rtentry 112 140 0 33 4 0 4 4 0 8 0 unpcb 144 586 0 568 3 1 2 2 0 8 1 syncache 336 7 0 7 3 3 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 362 0 356 9 7 2 8 0 8 1 arp 120 25 0 6 1 0 1 1 0 8 0 inpcb 336 1070 0 1054 9 5 4 7 0 8 2 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 30 0 2 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 6 0 6 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 8 0 4 1 0 1 1 0 482 0 pffrnode 88 7 0 4 1 0 1 1 0 8 0 pffrent 40 45 0 41 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 70 0 21 1 0 1 1 0 8 0 pfstkey 128 72 0 23 2 0 2 2 0 8 0 pfstate 376 70 0 22 5 0 5 5 0 8 0 pfrule 1344 24 0 16 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 589 0 120 31 1 30 31 0 8 0 art_table 32 592 0 120 5 0 5 5 0 8 0 art_node 16 138 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 38 0 28 1 0 1 1 0 8 0 shmpl 112 24 0 5 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3087 0 1585 95 0 95 95 0 8 0 ffsino 272 3087 0 1585 101 0 101 101 0 8 0 nchpl 144 4380 0 2693 63 0 63 63 0 8 0 uvmvnodes 80 3503 0 0 72 0 72 72 0 8 0 vnodes 216 3503 0 0 195 0 195 195 0 8 0 namei 1024 14567 0 14565 3 2 1 2 0 8 0 percpumem 16 60 0 14 1 0 1 1 0 8 0 kstatmem 264 52 0 28 2 0 2 2 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 12943 0 12943 11 10 1 8 1 8 1 plimitpl 152 270 0 252 1 0 1 1 0 8 0 sigapl 424 1246 0 1176 10 1 9 9 0 8 0 futexpl 64 12272 0 12270 1 0 1 1 0 8 0 knotepl 120 772 0 0 24 0 24 24 0 8 0 kqueuepl 216 270 0 260 4 2 2 3 0 8 1 pipepl 320 304 0 277 8 5 3 8 0 8 0 fdescpl 496 1205 0 1174 5 0 5 5 0 8 0 filepl 152 7312 0 7051 18 6 12 18 0 8 1 lockfpl 104 297 0 295 1 0 1 1 0 8 0 lockfspl 48 122 0 120 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 1291 0 1276 1 0 1 1 0 8 0 zombiepl 144 1178 0 1176 1 0 1 1 0 8 0 processpl 1160 1246 0 1176 7 1 6 6 0 8 0 procpl 648 2587 0 2510 8 0 8 8 0 8 0 srpgc 96 10 0 10 2 2 0 1 0 8 0 sosppl 168 9 0 9 1 1 0 1 0 8 0 sockpl 664 1782 0 1746 12 5 7 9 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 19 0 0 1 0 1 1 0 8 0 mbufpl 256 1249 0 0 78 0 78 78 0 8 0 bufpl 280 3876 0 102 270 0 270 270 0 8 0 anonpl 24 249066 0 244827 55 4 51 52 0 185 15 amapchunkpl 152 34101 0 33548 36 7 29 32 0 158 5 amappl16 200 6783 0 6749 30 19 11 15 0 8 7 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 149 0 137 1 0 1 1 0 8 0 amappl13 176 17 0 17 1 1 0 1 0 8 0 amappl12 168 1863 0 1831 4 1 3 3 0 8 0 amappl11 160 64 0 50 1 0 1 1 0 8 0 amappl10 152 17 0 17 2 2 0 1 0 8 0 amappl9 144 150 0 150 1 1 0 1 0 8 0 amappl8 136 59 0 56 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 172 0 171 1 0 1 1 0 8 0 amappl5 112 143 0 131 1 0 1 1 0 8 0 amappl4 104 352 0 333 1 0 1 1 0 8 0 amappl3 96 6264 0 6168 4 1 3 4 0 8 0 amappl2 88 1519 0 1433 3 0 3 3 0 8 0 amappl1 80 10835 0 10267 15 2 13 14 0 8 0 amappl 88 9869 0 9691 6 1 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 128 254 0 254 2 2 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 26 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1205 0 1174 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1205 0 1174 1 0 1 1 0 8 0 vmmpekpl 168 11828 0 11787 3 0 3 3 0 8 0 vmmpepl 168 82589 0 80710 100 1 99 100 0 357 12 vmsppl 448 1204 0 1174 6 2 4 5 0 8 0 rwobjpl 56 29908 0 25443 65 1 64 64 0 8 0 pdppl 4096 2417 0 2348 109 38 71 85 0 8 2 pvpl 32 15694 0 0 127 0 127 127 0 265 0 pmappl 248 1204 0 1174 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 477 0 60 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:437 witness_checkorder(fffffd8064aca810,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8064aca800,1) at rw_enter+0x122 rrw_enter(fffffd8064aca800,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8064a67b18,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8064a67b18,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd8064a67b18,ffff800011a26440,3f,0,1,b595767ca969449d,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd8060083388) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff8210a140,2902,8000,ffffffff81005cc0,ffff8000371dfe80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000371dfc70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0afde0,ffff8000371dfe80,0,fffffd807f7d33a8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd8064afb578,ffff8000371dfe80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2530,7,ffff8000371dfe80,0,ffff8000371dff40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff2530,ffff8000371dfff0,ffff8000371dff40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff8000371dfff0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371dfff0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x342620cf460, 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(ffffffff835a0960) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800030986ea0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800030986ea0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76ed630d0b30, count: -6