witness: lock order reversal: 1st 0xfffffd806c6de490 vmmaplk (&map->lock) 2nd 0xfffffd806fa73e68 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(fffffd806fa73e68,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806fa73e58,1) at rw_enter+0x122 rrw_enter(fffffd806fa73e58,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8072912458,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8072912458,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd8072912458,ffff800011a26180,31,0,1,96c5652e6fbc1c2e,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805cf33e48) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff82ad13c0,2902,8000,ffffffff82b37ee0,ffff80002db74d80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80002db74b70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0ceeb8,ffff80002db74d80,0,fffffd807f7d35b0) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bd8fc88,ffff80002db74d80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2020,6,ffff80002db74d80,0,ffff80002db74e40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff2020,ffff80002db74ef0,ffff80002db74e40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff80002db74ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002db74ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f21a41f500, count: -16 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002db74630 rbx 0xfffffd80042cc1b8 rdx 0 rcx 0xffff8000ffff2020 rax 0xffffffff834d7ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002db74510 r9 0x8080808080808080 r10 0xf084c08745aedd4a r11 0x3152d17eb9c92225 r12 0 r13 0xfffffd8003ae3e00 r14 0x3 r15 0xffffffff rip 0xffffffff829b4485 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002db74620 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=432658 pid=92818 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=75, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff3460,0xffff8000ffff2540 process=0xffff8000fffea8d0 user=0xffff80002db6f000, vmspace=0xfffffd806c6de398 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92818 8586 30149 0 2 0 syz-executor *92818 432658 30149 0 7 0x4000000 syz-executor 92818 37360 30149 0 3 0x4000080 fsleep syz-executor 14455 509593 97431 0 3 0x80 fsleep syz-executor 14455 107823 97431 0 3 0x4000080 fifow syz-executor 94977 160081 0 0 3 0x14280 nfsidl nfsio 5799 386111 0 0 3 0x14280 nfsidl nfsio 70662 326975 0 0 3 0x14280 nfsidl nfsio 50926 518947 0 0 3 0x14280 nfsidl nfsio 32229 182379 0 0 3 0x14280 nfsidl nfsio 90345 443577 0 0 3 0x14280 nfsidl nfsio 11297 156733 0 0 3 0x14280 nfsidl nfsio 43868 276483 0 0 3 0x14280 nfsidl nfsio 16845 169427 0 0 3 0x14280 nfsidl nfsio 72541 328254 0 0 3 0x14280 nfsidl nfsio 25702 439988 0 0 3 0x14280 nfsidl nfsio 99921 28158 0 0 3 0x14280 nfsidl nfsio 49035 451069 0 0 3 0x14280 nfsidl nfsio 68838 6971 0 0 3 0x14280 nfsidl nfsio 87779 413253 0 0 3 0x14280 nfsidl nfsio 99563 278405 0 0 3 0x14280 nfsidl nfsio 87984 496893 0 0 3 0x14280 nfsidl nfsio 82103 67057 0 0 3 0x14280 nfsidl nfsio 23739 474197 0 0 3 0x14280 nfsidl nfsio 94196 496274 0 0 3 0x14280 nfsidl nfsio 29473 68452 3213 0 3 0x80 fsleep syz-executor 29473 122207 3213 0 3 0x4000080 piperd syz-executor 3213 15059 36051 0 2 0x482 syz-executor 69017 516509 76725 0 3 0x80 fsleep syz-executor 69017 370851 76725 0 3 0x4000080 ttyout syz-executor 97431 3441 36051 0 3 0x82 nanoslp syz-executor 60806 207898 68797 0 3 0x80 fsleep syz-executor 60806 387 68797 0 3 0x4000080 lockf syz-executor 60806 522024 68797 0 3 0x4000080 fsleep syz-executor 10632 147771 18984 0 3 0x80 fsleep syz-executor 10632 406725 18984 0 3 0x4000080 ttyin syz-executor 10632 362465 18984 0 3 0x4000080 fsleep syz-executor 63673 319290 6985 0 3 0x80 fsleep syz-executor 63673 12596 6985 0 3 0x4000080 lockf syz-executor 6985 493595 36051 0 2 0x482 syz-executor 68797 428305 36051 0 2 0x482 syz-executor 84211 197678 1 0 3 0x100083 ttyin getty 77053 510448 0 0 3 0x14200 acct acct 69354 224636 0 0 3 0x14200 bored sosplice 76725 173204 36051 0 3 0x82 nanoslp syz-executor 40439 137216 36051 0 2 0x2 syz-executor 30149 99472 36051 0 2 0x482 syz-executor 18984 264039 36051 0 3 0x82 nanoslp syz-executor 36051 199311 32591 0 2 0x2 syz-executor 32591 143696 70821 0 3 0x10008a sigsusp ksh 70821 252180 80222 0 3 0x98 kqread sshd-session 80222 69656 78665 0 3 0x92 kqread sshd-session 78665 503704 1 0 3 0x88 kqread sshd 58765 56390 15637 74 3 0x1100092 bpf pflogd 15637 275704 1 0 3 0x80 sbwait pflogd 36653 56337 75813 73 3 0x1100090 kqread syslogd 75813 156710 1 0 3 0x100082 sbwait syslogd 26643 370007 1 0 3 0x100080 kqread resolvd 50021 216566 54683 77 3 0x100092 kqread dhcpleased 78943 6646 54683 77 3 0x100092 kqread dhcpleased 54683 280686 1 0 3 0x80 kqread dhcpleased 29337 309732 0 0 3 0x14200 bored smr 6656 328563 0 0 2 0x14200 zerothread 88596 313646 0 0 3 0x14200 aiodoned aiodoned 37985 448190 0 0 3 0x14200 syncer update 29787 500596 0 0 3 0x14200 cleaner cleaner 62414 176916 0 0 3 0x14200 reaper reaper 12018 269830 0 0 3 0x14200 pgdaemon pagedaemon 93014 92700 0 0 3 0x14200 bored viomb 93772 457630 0 0 3 0x40014200 acpi0 acpi0 69929 369528 0 0 7 0x40014200 idle1 52262 472359 0 0 3 0x14200 bored softnet3 72670 362550 0 0 3 0x14200 bored softnet2 80181 446381 0 0 3 0x14200 bored softnet1 55370 196804 0 0 3 0x14200 bored softnet0 79145 273253 0 0 3 0x14200 bored systqmp 84881 90397 0 0 3 0x14200 bored systq 24233 75485 0 0 3 0x14200 tmoslp softclockmp 83949 11373 0 0 2 0x40014200 softclock 45027 105027 0 0 3 0x40014200 idle0 1 335836 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 92818 (syz-executor) thread 0xffff8000ffff2020 (432658) shared rwlock vmmaplk r = 0 (0xfffffd806c6de490) #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 (0xffffffff835c11c0) #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 40439 (syz-executor) thread 0xffff80002a03fbf0 (137216) exclusive rrwlock inode r = 0 (0xfffffd806deb35e8) #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 (0xfffffd806cea36f8) #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 10239 11333K 11650K 166960K 13362 0 pcb 17 15K 17K 166960K 415 0 rtable 215 7K 8K 166960K 726 0 pf 34 17K 273K 166960K 136 0 ifaddr 39 7K 8K 166960K 99 0 ifgroup 54 2K 2K 166960K 176 0 sysctl 3 0K 1K 166960K 7 0 counters 62 36K 36K 166960K 132 0 ioctlops 0 0K 4K 166960K 1628 0 iov 1 16K 28K 166960K 183 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 2917 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 24 6K 10K 166960K 85 0 dirhash 12 2K 3K 166960K 42 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 1576 0 sigio 0 0K 0K 166960K 28 0 proc 72 91K 152K 166960K 778 0 subproc 104 6K 6K 166960K 159 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 217 0 in_multi 89 6K 7K 166960K 220 0 ether_multi 1 0K 0K 166960K 13 0 mrt 2 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 205 917K 917K 166960K 205 0 exec 0 0K 1K 166960K 812 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 255 74K 90K 166960K 15867 0 UVM aobj 50 4K 4K 166960K 51 0 pinsyscall 42 84K 106K 166960K 2801 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 78 0 NDP 11 0K 2K 166960K 71 0 temp 75 6828K 6903K 166960K 90339 0 kqueue 13 20K 30K 166960K 248 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 120 198 0 195 3 2 1 3 0 8 0 rtentry 112 185 0 88 4 0 4 4 0 8 0 unpcb 144 1058 0 1039 15 9 6 6 0 8 5 syncache 336 11 0 11 6 5 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 808 649 0 643 17 9 8 8 0 8 6 arp 120 33 0 16 1 0 1 1 0 8 0 inpcb 336 2331 0 2322 27 20 7 10 0 8 6 nd6 136 42 0 18 2 0 2 2 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 10 0 10 3 2 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 12 0 4 1 0 1 1 0 482 0 pffrnode 88 10 0 2 1 0 1 1 0 8 0 pffrent 40 56 0 48 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 24 177 0 76 1 0 1 1 0 8 0 pfstkey 128 178 0 77 4 0 4 4 0 8 0 pfstate 376 178 0 77 11 0 11 11 0 8 0 pfrule 1344 24 0 19 2 0 2 2 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 784 0 361 33 6 27 31 0 8 0 art_table 32 787 0 361 5 0 5 5 0 8 0 art_node 16 181 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 76 0 54 1 0 1 1 0 8 0 shmpl 112 48 0 1 2 0 2 2 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4286 0 2778 95 0 95 95 0 8 0 ffsino 272 4286 0 2778 101 0 101 101 0 8 0 nchpl 144 6510 0 5987 63 39 24 63 0 8 0 uvmvnodes 80 5335 0 0 109 0 109 109 0 8 0 vnodes 216 5335 0 0 297 0 297 297 0 8 0 namei 1024 22785 0 22785 2 1 1 1 0 8 1 percpumem 16 80 0 35 1 0 1 1 0 8 0 kstatmem 264 92 0 70 2 0 2 2 0 8 0 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 18882 0 18882 10 9 1 8 1 8 1 plimitpl 152 530 0 512 1 0 1 1 0 8 0 sigapl 424 1900 0 1829 10 1 9 9 0 8 0 futexpl 64 20677 0 20668 1 0 1 1 0 8 0 knotepl 120 872 0 0 27 0 27 27 0 8 0 kqueuepl 216 546 0 537 8 7 1 5 0 8 0 pipepl 320 266 0 238 3 0 3 3 0 8 0 fdescpl 496 1859 0 1828 5 0 5 5 0 8 0 filepl 152 12715 0 12458 27 9 18 18 0 8 6 lockfpl 104 413 0 406 1 0 1 1 0 8 0 lockfspl 48 189 0 184 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 65 0 48 1 0 1 1 0 8 0 ucredpl 104 2291 0 2277 1 0 1 1 0 8 0 zombiepl 144 1829 0 1829 1 0 1 1 0 8 1 processpl 1160 1900 0 1829 7 1 6 6 0 8 0 procpl 648 4076 0 3995 7 0 7 7 0 8 0 srpgc 96 12 0 12 4 4 0 1 0 8 0 sosppl 168 5 0 5 4 4 0 1 0 8 0 sockpl 664 3687 0 3656 40 28 12 15 0 8 8 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 137 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 40 0 0 4 0 4 4 0 8 0 mtagpl 96 111 0 0 3 0 3 3 0 8 0 mbufpl 256 8705 0 0 544 0 544 544 0 8 0 bufpl 280 5300 0 105 372 0 372 372 0 8 0 anonpl 24 332207 0 318502 159 51 108 108 0 185 0 amapchunkpl 152 58283 0 57585 58 15 43 43 0 158 14 amappl16 200 9190 0 8705 70 31 39 39 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 144 0 132 1 0 1 1 0 8 0 amappl13 176 26 0 26 2 2 0 1 0 8 0 amappl12 168 2577 0 2545 4 1 3 3 0 8 0 amappl11 160 62 0 48 1 0 1 1 0 8 0 amappl10 152 12 0 11 1 0 1 1 0 8 0 amappl9 144 137 0 137 1 1 0 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 130 0 118 1 0 1 1 0 8 0 amappl6 120 205 0 204 1 0 1 1 0 8 0 amappl5 112 164 0 152 1 0 1 1 0 8 0 amappl4 104 363 0 343 1 0 1 1 0 8 0 amappl3 96 9597 0 9495 3 0 3 3 0 8 0 amappl2 88 2235 0 2146 3 0 3 3 0 8 0 amappl1 80 14172 0 13600 14 0 14 14 0 8 0 amappl 88 15220 0 15026 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 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 50 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1859 0 1828 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1859 0 1828 1 0 1 1 0 8 0 vmmpekpl 168 15677 0 15622 3 0 3 3 0 8 0 vmmpepl 168 123670 0 121320 148 24 124 124 0 357 7 vmsppl 448 1858 0 1828 6 2 4 5 0 8 0 rwobjpl 56 41318 0 34516 101 3 98 98 0 8 2 pdppl 4096 3725 0 3656 115 42 73 85 0 8 4 pvpl 32 24651 0 0 199 0 199 199 0 265 0 pmappl 248 1858 0 1828 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 984 0 91 26 0 26 26 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(fffffd806fa73e68,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806fa73e58,1) at rw_enter+0x122 rrw_enter(fffffd806fa73e58,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8072912458,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8072912458,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd8072912458,ffff800011a26180,31,0,1,96c5652e6fbc1c2e,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805cf33e48) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff82ad13c0,2902,8000,ffffffff82b37ee0,ffff80002db74d80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80002db74b70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0ceeb8,ffff80002db74d80,0,fffffd807f7d35b0) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bd8fc88,ffff80002db74d80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2020,6,ffff80002db74d80,0,ffff80002db74e40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff2020,ffff80002db74ef0,ffff80002db74e40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff80002db74ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002db74ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9f21a41f500, 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5