witness: lock order reversal: 1st 0xfffffd806bf98820 vmmaplk (&map->lock) 2nd 0xfffffd806be78920 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{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(fffffd806be78920,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806be78910,1) at rw_enter+0x122 rrw_enter(fffffd806be78910,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806665b878,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806665b878,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd806665b878,ffff800011a26180,f,0,1,9f8999f54fa0edc4,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd806bf029e8) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff810efea0,2902,8000,ffffffff82505c00,ffff800035b98c80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff800035b98a70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806fbfeb58,ffff800035b98c80,0,fffffd807f7d3270) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bd06da8,ffff800035b98c80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff0028,6,ffff800035b98c80,0,ffff800035b98d40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff0028,ffff800035b98df0,ffff800035b98d40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff800035b98df0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800035b98df0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x748b83b4470, count: -16 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff800035b98530 rbx 0xfffffd80042c7570 rdx 0xffff800001290500 rcx 0xffff8000ffff0028 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff800035b98410 r9 0x8080808080808080 r10 0x26ea84a55a6f986b r11 0x5ff201dd8e8a238f r12 0 r13 0xfffffd8003adee00 r14 0x3 r15 0xffffffff rip 0xffffffff81668fa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800035b98520 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=170916 pid=8724 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff1978,0xffff8000ffff0a58 process=0xffff8000fffef680 user=0xffff800035b93000, vmspace=0xfffffd806bf98728 estcpu=1, cpticks=6, pctcpu=0.0, user=0, sys=6, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70781 451492 4805 0 2 0 syz-executor 70781 280610 4805 0 2 0x4000000 syz-executor 94041 505706 88619 0 2 0 syz-executor 56585 135451 57003 0 7 0 syz-executor 56585 302454 57003 0 3 0x4000080 fsleep syz-executor 56585 26580 57003 0 3 0x4000080 fsleep syz-executor 33622 501650 99427 0 2 0 syz-executor 8724 387004 25451 0 2 0 syz-executor * 8724 170916 25451 0 7 0x4000000 syz-executor 99169 2327 0 0 3 0x14200 bored sosplice 57003 144622 31343 0 3 0x82 nanoslp syz-executor 50506 178738 31343 0 3 0x2 biowait syz-executor 26949 453326 31343 0 3 0x82 wait syz-executor 88619 41302 31343 0 3 0x82 nanoslp syz-executor 25451 228870 31343 0 3 0x82 nanoslp syz-executor 99427 102193 31343 0 2 0x2 syz-executor 4805 326946 31343 0 3 0x82 nanoslp syz-executor 41114 113631 31343 0 3 0x82 nanoslp syz-executor 31343 511420 90356 0 3 0x82 kqread syz-executor 90356 100816 84356 0 3 0x10008a sigsusp ksh 84356 216304 96748 0 3 0x98 kqread sshd-session 96748 142629 78561 0 3 0x92 kqread sshd-session 18976 111375 1 0 3 0x100083 ttyin getty 78561 288141 1 0 3 0x88 kqread sshd 42453 489049 70966 74 3 0x1100092 bpf pflogd 70966 473865 1 0 3 0x80 sbwait pflogd 17832 14661 39721 73 3 0x1100090 kqread syslogd 39721 133250 1 0 3 0x100082 sbwait syslogd 5862 20496 1 0 3 0x100080 kqread resolvd 42636 128502 61203 77 3 0x100092 kqread dhcpleased 98638 179738 61203 77 3 0x100092 kqread dhcpleased 61203 277983 1 0 3 0x80 kqread dhcpleased 55386 434029 0 0 3 0x14200 bored smr 16547 257654 0 0 3 0x14200 pgzero zerothread 43379 261888 0 0 3 0x14200 aiodoned aiodoned 1996 321258 0 0 3 0x14200 syncer update 64414 317499 0 0 3 0x14200 cleaner cleaner 4401 321410 0 0 3 0x14200 reaper reaper 86733 349456 0 0 3 0x14200 pgdaemon pagedaemon 33276 147234 0 0 3 0x14200 bored viomb 60847 333131 0 0 3 0x40014200 acpi0 acpi0 65968 15983 0 0 3 0x40014200 idle1 35412 196503 0 0 3 0x14200 bored softnet3 37343 339966 0 0 3 0x14200 bored softnet2 42374 439572 0 0 3 0x14200 bored softnet1 44385 120820 0 0 3 0x14200 bored softnet0 60975 259662 0 0 3 0x14200 bored systqmp 1846 180430 0 0 3 0x14200 bored systq 15851 290591 0 0 3 0x14200 tmoslp softclockmp 27115 499504 0 0 3 0x40014200 tmoslp softclock 84468 123321 0 0 3 0x40014200 idle0 1 176373 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 56585 (syz-executor) thread 0xffff8000ffff1978 (135451) shared rwlock vmmaplk r = 0 (0xfffffd806bf984a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 8724 (syz-executor) thread 0xffff8000ffff0028 (170916) shared rwlock vmmaplk r = 0 (0xfffffd806bf98820) #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 (0xffffffff835f75c8) #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 50506 (syz-executor) thread 0xffff800029fd8f38 (178738) exclusive rrwlock inode r = 0 (0xfffffd806be78e70) #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 (0xfffffd806c5fd2b8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 11196K 11326K 166960K 11386 0 pcb 17 12K 12K 166960K 40 0 rtable 237 7K 7K 166960K 377 0 pf 34 17K 18K 166960K 49 0 ifaddr 42 7K 7K 166960K 46 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 2 0K 0K 166960K 4 0 counters 64 36K 36K 166960K 66 0 ioctlops 0 0K 4K 166960K 1494 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1362 86K 86K 166960K 1463 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 273 0 sigio 0 0K 0K 166960K 6 0 proc 72 91K 128K 166960K 546 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 20 0 in_multi 98 7K 7K 166960K 100 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 370 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 223 73K 78K 166960K 4091 0 UVM aobj 7 4K 4K 166960K 7 0 pinsyscall 42 84K 107K 166960K 1357 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 12 0K 2K 166960K 29 0 temp 35 6818K 6891K 166960K 13164 0 kqueue 13 20K 26K 166960K 47 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 42 0 39 1 0 1 1 0 8 0 rtentry 112 116 0 6 4 0 4 4 0 8 0 unpcb 144 122 0 104 2 0 2 2 0 8 1 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 808 48 0 44 1 0 1 1 0 8 0 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 336 184 0 176 2 0 2 2 0 8 0 nd6 136 26 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 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 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 24 0 0 1 0 1 1 0 8 0 pfstkey 128 24 0 0 1 0 1 1 0 8 0 pfstate 376 24 0 0 3 0 3 3 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 256 458 0 4 29 0 29 29 0 8 0 art_table 32 459 0 4 4 0 4 4 0 8 0 art_node 16 114 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1798 0 296 95 0 95 95 0 8 0 ffsino 272 1798 0 296 101 0 101 101 0 8 0 nchpl 144 2182 0 504 63 0 63 63 0 8 0 uvmvnodes 80 1958 0 0 40 0 40 40 0 8 0 vnodes 216 1958 0 0 109 0 109 109 0 8 0 namei 1024 6877 0 6877 2 0 2 2 0 8 2 percpumem 16 47 0 1 1 0 1 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6681 0 6679 9 1 8 8 1 8 7 plimitpl 152 40 0 22 1 0 1 1 0 8 0 sigapl 424 576 0 526 7 0 7 7 0 8 1 futexpl 64 2028 0 2026 1 0 1 1 0 8 0 knotepl 120 277 0 0 9 0 9 9 0 8 0 kqueuepl 216 61 0 52 1 0 1 1 0 8 0 pipepl 320 116 0 89 3 0 3 3 0 8 0 fdescpl 496 557 0 526 5 0 5 5 0 8 0 filepl 152 2239 0 1985 11 0 11 11 0 8 0 lockfpl 104 28 0 23 1 0 1 1 0 8 0 lockfspl 48 15 0 10 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 201 0 187 1 0 1 1 0 8 0 zombiepl 144 528 0 526 1 0 1 1 0 8 0 processpl 1160 576 0 526 5 0 5 5 0 8 1 procpl 648 808 0 754 6 0 6 6 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 664 352 0 324 4 0 4 4 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 141 0 0 18 0 18 18 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 149 0 0 9 0 9 9 0 8 0 bufpl 280 2521 0 96 174 0 174 174 0 8 0 anonpl 24 146377 0 138435 50 0 50 50 0 185 1 amapchunkpl 152 13239 0 12614 28 0 28 28 0 158 2 amappl16 200 3508 0 3394 16 4 12 14 0 8 0 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 117 0 105 1 0 1 1 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 1203 0 1174 4 1 3 3 0 8 1 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 223 0 223 1 1 0 1 0 8 0 amappl8 136 50 0 47 1 0 1 1 0 8 0 amappl7 128 107 0 95 1 0 1 1 0 8 0 amappl6 120 166 0 163 1 0 1 1 0 8 0 amappl5 112 161 0 150 1 0 1 1 0 8 0 amappl4 104 325 0 306 1 0 1 1 0 8 0 amappl3 96 2312 0 2231 3 0 3 3 0 8 0 amappl2 88 839 0 757 3 0 3 3 0 8 0 amappl1 80 8187 0 7624 14 0 14 14 0 8 1 amappl 88 3705 0 3545 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 557 0 526 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 557 0 526 1 0 1 1 0 8 0 vmmpekpl 168 6049 0 6013 2 0 2 2 0 8 0 vmmpepl 168 42160 0 40248 94 0 94 94 0 357 2 vmsppl 448 556 0 526 6 1 5 5 0 8 1 rwobjpl 56 17499 0 14541 43 0 43 43 0 8 0 pdppl 4096 1121 0 1052 103 32 71 85 0 8 2 pvpl 32 14622 0 0 118 0 118 118 0 265 0 pmappl 248 556 0 526 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 380 0 35 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff83424ff0) 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(ffffffff835f73c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800034d8bf10,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800034d8c070,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800034d8c1d0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f73c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvm_fault(fffffd806bf983a8,2cc7827e000,0,1) at uvm_fault+0x1e0 sys/uvm/uvm_fault.c:622 upageflttrap(ffff800034d8c560,2cc7827e000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff800034d8c560) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7dd161df2800, count: -17 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(fffffd806be78920,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806be78910,1) at rw_enter+0x122 rrw_enter(fffffd806be78910,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806665b878,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806665b878,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd806665b878,ffff800011a26180,f,0,1,9f8999f54fa0edc4,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd806bf029e8) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff810efea0,2902,8000,ffffffff82505c00,ffff800035b98c80) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff800035b98a70) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806fbfeb58,ffff800035b98c80,0,fffffd807f7d3270) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bd06da8,ffff800035b98c80,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff0028,6,ffff800035b98c80,0,ffff800035b98d40) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_readv(ffff8000ffff0028,ffff800035b98df0,ffff800035b98d40) at sys_readv+0xd8 sys/kern/sys_generic.c:199 syscall(ffff800035b98df0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800035b98df0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x748b83b4470, count: -16