witness: lock order reversal: 1st 0xfffffd806bcd1820 vmmaplk (&map->lock) 2nd 0xfffffd806dea4f88 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_read+0xa2 sys/kern/sys_generic.c:172 #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{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(fffffd806dea4f88,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806dea4f78,1) at rw_enter+0x122 rrw_enter(fffffd806dea4f78,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805f36f3b8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805f36f3b8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805f36f3b8,ffff800011a26140,f2,0,1,5cd763b25d7aa52,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80756565b0) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff82c92c20,2902,8000,ffffffff82891340,ffff8000371d3b68) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000371d39d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0e3eb8,ffff8000371d3b68,0,fffffd807f7d33a8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806e32e318,ffff8000371d3b68,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2530,6,ffff8000371d3b68,0,ffff8000371d3c20) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff8000ffff2530,ffff8000371d3cd0,ffff8000371d3c20) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff8000371d3cd0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371d3cd0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xffeff6aa240, count: -16 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff8000371d3490 rbx 0xfffffd80042c7790 rdx 0xffff8000012a0d40 rcx 0xffff8000ffff2530 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff8000371d3370 r9 0x8080808080808080 r10 0x3f402c422ff6bac8 r11 0x42fdeb0650cc617a r12 0 r13 0xfffffd8003adee00 r14 0x3 r15 0xffffffff rip 0xffffffff823851f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371d3480 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=223364 pid=96520 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff2cc8,0xffff80002a0b22d0 process=0xffff8000372756a8 user=0xffff8000371ce000, vmspace=0xfffffd806bcd1728 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20137 434858 38691 0 2 0 syz-executor 96520 129707 88538 -1 7 0x10 syz-executor *96520 223364 88538 -1 7 0x4000010 syz-executor 7205 228975 50052 0 3 0x80 nanoslp syz-executor 7205 123487 50052 0 3 0x4000080 fsleep syz-executor 34153 228855 78896 0 2 0 syz-executor 34153 312457 78896 0 3 0x4000080 fsleep syz-executor 81807 247263 6163 0 2 0 syz-executor 81807 146987 6163 0 3 0x4000080 kqread syz-executor 81807 134098 6163 0 3 0x4000080 kqread syz-executor 81807 359006 6163 0 3 0x4000080 fsleep syz-executor 2948 464231 46899 0 2 0 syz-executor 2948 429485 46899 0 2 0x4000000 syz-executor 54357 251962 14361 0 3 0x80 nanoslp syz-executor 54357 429220 14361 0 3 0x4000080 ttyopn syz-executor 54357 99277 14361 0 3 0x4000080 ttyopn syz-executor 54357 101003 14361 0 3 0x4000080 fsleep syz-executor 6163 109472 19732 0 3 0x82 nanoslp syz-executor 41894 260380 1 0 3 0x100083 ttyin getty 1971 413593 0 0 3 0x14280 nfsidl nfsio 23085 122750 0 0 3 0x14280 nfsidl nfsio 61070 237571 0 0 3 0x14280 nfsidl nfsio 76839 150207 0 0 3 0x14280 nfsidl nfsio 57147 470515 0 0 3 0x14280 nfsidl nfsio 30482 245955 0 0 3 0x14280 nfsidl nfsio 94229 446679 0 0 3 0x14280 nfsidl nfsio 62579 79118 0 0 3 0x14280 nfsidl nfsio 35351 465109 0 0 3 0x14280 nfsidl nfsio 35062 500930 0 0 3 0x14280 nfsidl nfsio 12183 39114 0 0 3 0x14280 nfsidl nfsio 51945 432162 0 0 3 0x14280 nfsidl nfsio 93233 198460 0 0 3 0x14280 nfsidl nfsio 49570 181733 0 0 3 0x14280 nfsidl nfsio 77863 355060 0 0 3 0x14280 nfsidl nfsio 59484 181659 0 0 3 0x14280 nfsidl nfsio 65953 46348 0 0 3 0x14280 nfsidl nfsio 78144 514954 0 0 3 0x14280 nfsidl nfsio 76059 198810 0 0 3 0x14280 nfsidl nfsio 21949 195560 0 0 3 0x14280 nfsidl nfsio 78896 464709 19732 0 3 0x82 nanoslp syz-executor 50316 207562 0 0 3 0x14200 bored sosplice 19996 291080 42721 0 3 0x100082 sbwait arp 42721 147804 1 0 3 0x10008a sigsusp sh 14361 386806 19732 0 3 0x82 nanoslp syz-executor 88460 369562 19732 0 3 0x2 biowait syz-executor 38691 467458 19732 0 3 0x82 nanoslp syz-executor 88538 503144 19732 0 3 0x82 nanoslp syz-executor 46899 90837 19732 0 3 0x82 nanoslp syz-executor 50052 111375 19732 0 3 0x82 nanoslp syz-executor 19732 300333 91514 0 3 0x82 kqread syz-executor 91514 469511 52963 0 3 0x10008a sigsusp ksh 52963 400365 62223 0 3 0x98 kqread sshd-session 62223 297442 84079 0 3 0x92 kqread sshd-session 84079 21003 1 0 3 0x88 kqread sshd 25881 255906 69883 74 3 0x1100092 bpf pflogd 69883 507675 1 0 3 0x80 sbwait pflogd 39435 170984 56125 73 3 0x1100090 kqread syslogd 56125 18889 1 0 3 0x100082 sbwait syslogd 36176 478326 1 0 3 0x100080 kqread resolvd 50968 63011 3341 77 3 0x100092 kqread dhcpleased 22048 434460 3341 77 3 0x100092 kqread dhcpleased 3341 84515 1 0 3 0x80 kqread dhcpleased 4302 166139 0 0 3 0x14200 bored smr 34154 372170 0 0 2 0x14200 zerothread 32655 197741 0 0 3 0x14200 aiodoned aiodoned 94460 31485 0 0 3 0x14200 syncer update 54053 100285 0 0 3 0x14200 cleaner cleaner 34822 506743 0 0 3 0x14200 reaper reaper 11534 456003 0 0 3 0x14200 pgdaemon pagedaemon 70631 96769 0 0 3 0x14200 bored viomb 70360 464496 0 0 3 0x40014200 acpi0 acpi0 45159 156215 0 0 3 0x40014200 idle1 2800 22250 0 0 3 0x14200 bored softnet3 5355 508310 0 0 3 0x14200 bored softnet2 90244 268435 0 0 3 0x14200 bored softnet1 11524 436806 0 0 3 0x14200 bored softnet0 49601 307814 0 0 3 0x14200 bored systqmp 89406 518047 0 0 3 0x14200 bored systq 75396 255622 0 0 3 0x14200 tmoslp softclockmp 41115 16889 0 0 3 0x40014200 tmoslp softclock 53806 372150 0 0 3 0x40014200 idle0 1 453291 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 96520 (syz-executor) thread 0xffff8000ffff2530 (223364) shared rwlock vmmaplk r = 0 (0xfffffd806bcd1820) #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_read+0xa2 sys/kern/sys_generic.c:172 #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 (0xffffffff8358f6c8) #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_read+0xa2 sys/kern/sys_generic.c:172 #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 88460 (syz-executor) thread 0xffff800029fd87a0 (369562) exclusive rrwlock inode r = 0 (0xfffffd806dd9a4d8) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c6ad4d8) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 11243K 12674K 166960K 12519 0 pcb 17 14K 14K 166960K 188 0 rtable 220 7K 8K 166960K 502 0 pf 32 17K 18K 166960K 80 0 ifaddr 39 6K 7K 166960K 72 0 ifgroup 51 2K 2K 166960K 98 0 sysctl 3 0K 0K 166960K 3 0 counters 62 36K 36K 166960K 92 0 ioctlops 0 0K 4K 166960K 1564 0 iov 0 0K 22K 166960K 118 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1560 98K 98K 166960K 2051 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 10K 10K 166960K 30 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 19 69K 93K 166960K 806 0 sigio 0 0K 0K 166960K 19 0 proc 72 91K 128K 166960K 670 0 subproc 117 7K 7K 166960K 130 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 86 0 in_multi 85 6K 6K 166960K 160 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 594 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 249 73K 78K 166960K 9229 0 UVM aobj 53 4K 4K 166960K 58 0 pinsyscall 45 90K 111K 166960K 1944 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 59 0 NDP 13 0K 1K 166960K 48 0 temp 62 6823K 6891K 166960K 27583 0 kqueue 15 20K 26K 166960K 132 0 SYN cache 2 16K 16K 166960K 2 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 76 0 71 1 0 1 1 0 8 0 rtentry 112 158 0 58 3 0 3 3 0 8 0 unpcb 144 642 0 623 10 6 4 6 0 8 3 syncache 336 6 0 6 4 3 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 808 230 0 224 8 1 7 7 0 8 6 arp 120 24 0 6 1 0 1 1 0 8 0 inpcb 336 859 0 849 11 4 7 7 0 8 5 nd6 136 32 0 7 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 2 0 1 0 8 0 kcovpl 48 10 0 1 1 0 1 1 0 8 0 ppxss 1168 8 0 8 2 1 1 1 0 8 1 pffrag 232 41 0 34 1 0 1 1 0 482 0 pffrnode 88 41 0 34 1 0 1 1 0 8 0 pffrent 40 78 0 71 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 75 0 21 1 0 1 1 0 8 0 pfstkey 128 75 0 21 2 0 2 2 0 8 0 pfstate 376 75 0 21 6 0 6 6 0 8 0 pfrule 1344 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 698 0 305 29 3 26 28 0 8 0 art_table 32 701 0 305 4 0 4 4 0 8 0 art_node 16 156 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 10 4 3 1 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 55 0 5 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2719 0 1215 95 0 95 95 0 8 0 ffsino 272 2719 0 1215 102 1 101 102 0 8 0 nchpl 144 3849 0 2162 64 0 64 64 0 8 0 uvmvnodes 80 3318 0 0 68 0 68 68 0 8 0 vnodes 216 3318 0 0 185 0 185 185 0 8 0 namei 1024 12951 0 12950 3 2 1 2 0 8 0 percpumem 16 60 0 15 1 0 1 1 0 8 0 kstatmem 264 52 0 30 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 11338 0 11337 10 9 1 8 1 8 0 plimitpl 152 185 0 167 1 0 1 1 0 8 0 sigapl 424 1130 0 1058 9 0 9 9 0 8 0 futexpl 64 9892 0 9888 2 1 1 1 0 8 0 knotepl 120 578 0 0 17 0 17 17 0 8 0 kqueuepl 216 253 0 242 5 0 5 5 0 8 4 pipepl 320 241 0 210 8 5 3 8 0 8 0 fdescpl 496 1088 0 1055 5 0 5 5 0 8 0 filepl 152 6471 0 6198 25 10 15 18 0 8 3 lockfpl 104 420 0 418 2 1 1 2 0 8 0 lockfspl 48 189 0 187 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 53 0 35 1 0 1 1 0 8 0 ucredpl 104 947 0 932 1 0 1 1 0 8 0 zombiepl 144 1058 0 1058 1 0 1 1 0 8 1 processpl 1160 1130 0 1058 6 0 6 6 0 8 0 procpl 648 2240 0 2158 8 0 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 5 0 5 3 2 1 1 0 8 1 sockpl 664 1588 0 1554 27 15 12 14 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 162 0 0 21 0 21 21 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 669 0 0 41 0 41 41 0 8 0 bufpl 280 3605 0 102 251 0 251 251 0 8 0 anonpl 24 238107 0 234301 79 30 49 49 0 185 20 amapchunkpl 152 30106 0 29567 38 11 27 27 0 158 4 amappl16 200 6609 0 6582 38 24 14 14 0 8 12 amappl15 192 17 0 17 1 1 0 1 0 8 0 amappl14 184 125 0 112 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 1761 0 1728 4 1 3 3 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 12 0 12 2 2 0 1 0 8 0 amappl9 144 149 0 148 2 1 1 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 122 0 108 1 0 1 1 0 8 0 amappl6 120 183 0 181 1 0 1 1 0 8 0 amappl5 112 144 0 132 1 0 1 1 0 8 0 amappl4 104 329 0 308 1 0 1 1 0 8 0 amappl3 96 5545 0 5439 3 0 3 3 0 8 0 amappl2 88 1415 0 1329 3 0 3 3 0 8 0 amappl1 80 10364 0 9777 17 2 15 15 0 8 0 amappl 88 8748 0 8564 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 128 255 0 255 2 1 1 1 0 8 1 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 57 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1088 0 1055 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1088 0 1055 1 0 1 1 0 8 0 vmmpekpl 168 9861 0 9809 3 0 3 3 0 8 0 vmmpepl 168 75688 0 73749 100 4 96 96 0 357 8 vmsppl 448 1087 0 1055 6 1 5 5 0 8 0 rwobjpl 56 28399 0 24039 66 2 64 64 0 8 2 pdppl 4096 2183 0 2110 133 56 77 85 0 8 4 pvpl 32 15538 0 0 126 1 125 125 0 265 0 pmappl 248 1087 0 1055 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 472 0 74 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(ffffffff83504ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8358f4c0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8358f4c0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a098a20,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff8358f4c0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8358f4c0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a098b80,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff8358f4c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8358f4c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a098ce0,ffff800000079f80) 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: 0x7bc5ea9e3050, count: -13 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(fffffd806dea4f88,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806dea4f78,1) at rw_enter+0x122 rrw_enter(fffffd806dea4f78,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805f36f3b8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805f36f3b8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805f36f3b8,ffff800011a26140,f2,0,1,5cd763b25d7aa52,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80756565b0) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff82c92c20,2902,8000,ffffffff82891340,ffff8000371d3b68) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff8000371d39d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0e3eb8,ffff8000371d3b68,0,fffffd807f7d33a8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806e32e318,ffff8000371d3b68,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff2530,6,ffff8000371d3b68,0,ffff8000371d3c20) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff8000ffff2530,ffff8000371d3cd0,ffff8000371d3c20) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff8000371d3cd0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371d3cd0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xffeff6aa240, count: -16