witness: lock order reversal: 1st 0xfffffd805b89b4c0 vmmaplk (&map->lock) 2nd 0xfffffd8069ff4f18 inode (&ip->i_lock) lock order [1] vmmaplk (&map->lock) -> [2] inode (&ip->i_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #2 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #3 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #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+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 lock order [2] inode (&ip->i_lock) -> [1] vmmaplk (&map->lock) #0 rw_do_enter_read+0x9d sys/kern/kern_rwlock.c:352 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864 #2 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #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+0xbd4 sys/kern/kern_exec.c:468 #14 start_init+0x3c6 sys/kern/init_main.c:716 #15 proc_trampoline+0x10 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:437 witness_checkorder(fffffd8069ff4f18,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd8069ff4f00,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd8069ff4f00,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd8063b59a68,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8063b59a68,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_rdwr(0,fffffd8063b59a68,ffff800011a26480,c,0,1,32f8a7c5acbffb57,0,ffff800000b2a000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805bbf0018) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff828a4370,2902,8000,ffffffff8165bd70,ffff80003898c230) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80003898c020) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806de10eb8,ffff80003898c230,0,fffffd807f7d3618) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806ec02858,ffff80003898c230,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80003857c538,3,ffff80003898c230,0,ffff80003898c2f0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff80003857c538,ffff80003898c3a0,ffff80003898c2f0) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff80003898c3a0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003898c3a0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaeb5c83b860, count: -16 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003898bb00 rbx 0xfffffd8004340b58 rdx 0xffff8000012e3340 rcx 0xffff80003857c538 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003898b9e0 r9 0x8080808080808080 r10 0xc12a29e4a4f780ed r11 0xfb782ddeaa5c7f15 r12 0 r13 0xfffffd8003b58f00 r14 0x3 r15 0xffffffff rip 0xffffffff8176dda5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003898baf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=501079 pid=46413 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003857d468,0xffff8000ffffb460 process=0xffff80003c6836c8 user=0xffff800038987000, vmspace=0xfffffd805b89b3c0 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91449 137364 49784 0 2 0 syz-executor 46413 66126 59141 0 7 0 syz-executor *46413 501079 59141 0 7 0x4000000 syz-executor 72077 443461 4772 0 2 0x1000000 syz-executor 72077 172676 4772 0 3 0x5000080 kqread syz-executor 7514 266871 61720 0 3 0x80 nanoslp syz-executor 7514 463926 61720 0 3 0x4000080 sbwait syz-executor 7514 472878 61720 0 3 0x4000080 fsleep syz-executor 87904 331781 63848 0 3 0x80 nanoslp syz-executor 87904 445915 63848 0 3 0x4000080 ttyin syz-executor 23536 32402 12321 0 3 0x80 nanoslp syz-executor 23536 252085 12321 0 3 0x4000080 fsleep syz-executor 23536 73061 12321 0 3 0x4000080 fsleep syz-executor 23536 377646 12321 0 3 0x4000080 lockf syz-executor 43803 405277 89845 0 3 0x4000080 nanoslp syz-executor 43803 61283 89845 0 3 0x4000080 kqsel syz-executor 43803 294483 89845 0 3 0x4000080 fsleep syz-executor 43803 240198 89845 0 3 0x4000080 fsleep syz-executor 63848 169746 74175 0 3 0x82 nanoslp syz-executor 46004 270347 1 0 3 0x100083 ttyin getty 59141 176976 74175 0 3 0x82 nanoslp syz-executor 89845 128299 74175 0 3 0x82 nanoslp syz-executor 76011 902 0 0 3 0x14200 bored sosplice 49784 261438 74175 0 3 0x82 nanoslp syz-executor 12321 211814 74175 0 3 0x82 nanoslp syz-executor 3333 16069 74175 0 3 0x2 biowait syz-executor 61720 111181 74175 0 3 0x82 nanoslp syz-executor 4772 177496 74175 0 3 0x82 nanoslp syz-executor 74175 286873 25573 0 3 0x82 kqread syz-executor 25573 426160 73393 0 3 0x10008a sigsusp ksh 73393 305655 63690 0 3 0x98 kqread sshd-session 63690 520259 57312 0 3 0x92 kqread sshd-session 57312 372636 1 0 3 0x88 kqread sshd 46323 208758 58454 74 3 0x1100092 bpf pflogd 58454 119458 1 0 3 0x80 sbwait pflogd 24699 79421 4828 73 3 0x1100090 kqread syslogd 4828 232091 1 0 3 0x100082 sbwait syslogd 78551 416147 1 0 3 0x100080 kqread resolvd 37209 306649 38238 77 3 0x100092 kqread dhcpleased 85937 197186 38238 77 3 0x100092 kqread dhcpleased 38238 180574 1 0 3 0x80 kqread dhcpleased 27667 449920 0 0 3 0x14200 bored smr 78300 447605 0 0 2 0x14200 zerothread 85940 444620 0 0 3 0x14200 aiodoned aiodoned 85912 488051 0 0 3 0x14200 syncer update 4411 371810 0 0 3 0x14200 cleaner cleaner 26471 78314 0 0 3 0x14200 reaper reaper 3107 375299 0 0 3 0x14200 pgdaemon pagedaemon 31086 369705 0 0 3 0x14200 bored viomb 84193 11529 0 0 3 0x40014200 acpi0 acpi0 95580 312700 0 0 3 0x40014200 idle1 68036 75317 0 0 3 0x14200 bored softnet3 36259 61427 0 0 3 0x14200 bored softnet2 66222 441762 0 0 3 0x14200 bored softnet1 38775 58787 0 0 2 0x14200 softnet0 99135 472131 0 0 3 0x14200 bored systqmp 8293 251859 0 0 3 0x14200 bored systq 31817 177349 0 0 3 0x14200 tmoslp softclockmp 43275 258138 0 0 3 0x40014200 tmoslp softclock 51308 280308 0 0 3 0x40014200 idle0 1 105790 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 46413 (syz-executor) thread 0xffff80003857c538 (501079) shared rwlock vmmaplk r = 0 (0xfffffd805b89b4c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:172 #3 physio+0x277 sys/kern/kern_physio.c:139 #4 spec_read+0x155 sys/kern/spec_vnops.c:215 #5 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #6 vn_read+0x17b sys/kern/vfs_vnops.c:369 #7 dofilereadv+0x230 sys/kern/sys_generic.c:252 #8 sys_readv+0xd8 sys/kern/sys_generic.c:199 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8356f038) #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+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 3333 (syz-executor) thread 0xffff80002a44dbf0 (16069) exclusive rrwlock inode r = 0 (0xfffffd806f533dd0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 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:1851 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806df15a90) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10250 11190K 11462K 166960K 15292 0 pcb 17 18K 20K 166960K 614 0 rtable 191 7K 9K 166960K 747 0 pf 43 19K 23K 166960K 267 0 ifaddr 36 6K 8K 166960K 110 0 ifgroup 62 2K 3K 166960K 166 0 sysctl 4 1K 3K 166960K 9 0 counters 66 36K 37K 166960K 132 0 ioctlops 0 0K 4K 166960K 1916 0 iov 0 0K 22K 166960K 320 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 3967 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 46 0 VM map 2 1K 1K 166960K 2 0 sem 28 29K 39K 166960K 56 0 dirhash 12 2K 3K 166960K 60 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 89K 166960K 2569 0 sigio 1 0K 0K 166960K 42 0 proc 78 103K 128K 166960K 962 0 subproc 72 4K 4K 166960K 101 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 430 0 in_multi 69 5K 7K 166960K 256 0 ether_multi 1 0K 0K 166960K 22 0 mrt 2 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 785 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 74K 90K 166960K 25846 0 UVM aobj 131 6K 6K 166960K 137 0 pinsyscall 42 84K 102K 166960K 3774 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 158 0 NDP 13 0K 2K 166960K 77 0 temp 79 6900K 7023K 166960K 107994 0 kqueue 15 24K 34K 166960K 424 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> 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 120 333 0 329 6 5 1 3 0 8 0 rtentry 112 220 0 140 4 0 4 4 0 8 0 unpcb 144 1907 0 1886 19 13 6 6 0 8 5 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 1198 0 1193 24 16 8 8 0 8 7 arp 120 44 0 21 1 0 1 1 0 8 0 inpcb 376 3761 0 3752 46 38 8 21 0 8 6 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 41 0 26 1 0 1 1 0 8 0 pkpcb 40 55 0 54 3 2 1 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1168 20 0 20 5 4 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 22 0 11 1 0 1 1 0 482 0 pffrnode 88 20 0 10 1 0 1 1 0 8 0 pffrent 40 226 0 215 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 2 0 0 1 0 1 1 0 8 0 pfanchor 1288 8 0 4 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 210 0 77 1 0 1 1 0 8 0 pfstkey 128 217 0 82 5 0 5 5 0 8 0 pfstate 376 211 0 80 14 0 14 14 0 8 0 pfrule 1344 79 0 28 6 1 5 5 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 984 0 589 32 7 25 29 0 8 0 art_table 32 988 0 589 4 0 4 4 0 8 0 art_node 16 211 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 51 0 43 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 46 0 20 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 50 0 33 3 0 3 3 0 8 0 dino2pl 256 6200 0 4684 95 0 95 95 0 8 0 ffsino 280 6200 0 4684 109 0 109 109 0 8 0 nchpl 144 9954 0 9400 64 31 33 64 0 8 8 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 35940 0 35940 6 5 1 2 0 8 1 percpumem 16 80 0 33 1 0 1 1 0 8 0 kstatmem 264 92 0 66 7 4 3 3 0 8 0 scsiplug 72 9 0 9 7 6 1 1 0 8 1 scxspl 216 28236 0 28234 12 9 3 8 1 8 2 plimitpl 152 701 0 681 1 0 1 1 0 8 0 sigapl 424 2897 0 2847 9 1 8 9 0 8 1 futexpl 64 37343 0 37338 1 0 1 1 0 8 0 knotepl 120 603 0 0 18 0 18 18 0 8 0 kqueuepl 216 1108 0 1093 19 14 5 5 0 8 4 pipepl 328 619 0 592 19 11 8 9 0 8 5 fdescpl 504 2854 0 2823 5 0 5 5 0 8 0 filepl 152 21870 0 21578 46 28 18 19 0 8 6 lockfpl 104 1172 0 1168 2 1 1 2 0 8 0 lockfspl 48 370 0 367 1 0 1 1 0 8 0 sessionpl 144 35 0 26 1 0 1 1 0 8 0 pgrppl 48 133 0 116 1 0 1 1 0 8 0 ucredpl 104 4009 0 3995 2 1 1 2 0 8 0 zombiepl 144 3319 0 3319 2 1 1 1 0 8 1 processpl 1168 2897 0 2847 7 2 5 6 0 8 0 procpl 648 6938 0 6877 8 1 7 8 0 8 0 srpgc 96 14 0 14 4 3 1 1 0 8 1 sosppl 168 30 0 30 6 5 1 1 0 8 1 sockpl 688 6150 0 6115 60 49 11 21 0 8 7 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 138 0 0 17 0 17 17 0 8 0 mcl2k 2048 45 0 0 4 0 4 4 0 8 0 mtagpl 96 100 0 0 3 0 3 3 0 8 0 mbufpl 256 2476 0 0 155 0 155 155 0 8 0 bufpl 280 9312 0 3145 441 0 441 441 0 8 0 anonpl 24 377701 0 362151 149 39 110 110 0 185 15 amapchunkpl 152 84857 0 84201 73 23 50 50 0 158 20 amappl16 200 8092 0 7468 60 22 38 38 0 8 5 amappl15 192 34 0 34 1 1 0 1 0 8 0 amappl14 184 131 0 119 1 0 1 1 0 8 0 amappl13 176 22 0 21 1 0 1 1 0 8 0 amappl12 168 3555 0 3524 4 1 3 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 263 0 262 2 1 1 1 0 8 0 amappl8 136 32 0 29 1 0 1 1 0 8 0 amappl7 128 124 0 111 1 0 1 1 0 8 0 amappl6 120 220 0 216 1 0 1 1 0 8 0 amappl5 112 146 0 134 1 0 1 1 0 8 0 amappl4 104 361 0 340 1 0 1 1 0 8 0 amappl3 96 17644 0 17532 4 0 4 4 0 8 0 amappl2 88 764 0 697 2 0 2 2 0 8 0 amappl1 80 16603 0 16041 16 2 14 16 0 8 0 amappl 88 25229 0 25047 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 2854 0 2823 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2854 0 2823 1 0 1 1 0 8 0 vmmpekpl 168 24550 0 24500 3 0 3 3 0 8 0 vmmpepl 168 178033 0 175557 134 19 115 115 0 357 1 vmsppl 456 2853 0 2823 7 2 5 5 0 8 0 rwobjpl 64 51285 0 43685 127 2 125 125 0 8 2 pdppl 4096 5715 0 5646 115 44 71 83 0 8 2 pvpl 32 25096 0 0 202 0 202 202 0 265 0 pmappl 248 2853 0 2823 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 485 0 87 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834d0ff0) 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(ffffffff8356ee30) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8356ee30) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80003c6a1220,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff8356ee30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8356ee30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c6a1380,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x76f19503d310, count: -9 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:437 witness_checkorder(fffffd8069ff4f18,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd8069ff4f00,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd8069ff4f00,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd8063b59a68,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8063b59a68,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_rdwr(0,fffffd8063b59a68,ffff800011a26480,c,0,1,32f8a7c5acbffb57,0,ffff800000b2a000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805bbf0018) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff828a4370,2902,8000,ffffffff8165bd70,ffff80003898c230) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80003898c020) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806de10eb8,ffff80003898c230,0,fffffd807f7d3618) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806ec02858,ffff80003898c230,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80003857c538,3,ffff80003898c230,0,ffff80003898c2f0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff80003857c538,ffff80003898c3a0,ffff80003898c2f0) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff80003898c3a0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003898c3a0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaeb5c83b860, count: -16