uvm_fault(fffffd807d814e70,12151845000,0,2) at uvm_fault+0x238
upageflttrap(ffff80002aef77a0,12151845000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
usertrap(ffff80002aef77a0) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x1214da420d0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
witness_checkorder(fffffd8075765a28,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(fffffd8075765a28,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter(fffffd8075765a18,1) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250
rrw_enter(fffffd8075765a18,1) at rrw_enter+0x8b sys/kern/kern_rwlock.c:465
VOP_LOCK(fffffd806343b628,2001) at VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
vn_lock(fffffd806343b628,2001) at vn_lock+0x84 sys/kern/vfs_vnops.c:564
vn_rdwr(0,fffffd806343b628,ffff800008a43180,38,0,1,d9570cd32e397efd,ffff8000006b6000,fffffd805b0a4278,0) at vn_rdwr+0xb1 sys/kern/vfs_vnops.c:320
vndstrategy(fffffd805b0a4278) at vndstrategy+0x3c4 sys/dev/vnd.c:342
physio(ffffffff8129bb70,2902,8000,ffffffff81beb1a0,ffff80002335c058) at physio+0x289 sys/kern/kern_physio.c:163
spec_read(ffff80002335be30) at spec_read+0xf9 sys/kern/spec_vnops.c:215
VOP_READ(fffffd806ea68570,ffff80002335c058,0,fffffd807f7d75b0) at VOP_READ+0xbf sys/kern/vfs_vops.c:227
vn_read(fffffd807b2c25f8,ffff80002335c058,1) at vn_read+0x126 sys/kern/vfs_vnops.c:369
dofilereadv(ffff8000295dafc0,3,ffff80002335c058,1,ffff80002335c150) at dofilereadv+0x19e sys/kern/sys_generic.c:247
sys_pad_preadv(ffff8000295dafc0,ffff80002335c108,ffff80002335c150) at sys_pad_preadv+0xb9 sys_preadv sys/kern/vfs_syscalls.c:3335 [inline]
sys_pad_preadv(ffff8000295dafc0,ffff80002335c108,ffff80002335c150) at sys_pad_preadv+0xb9 sys/kern/vfs_syscalls.c:3425
syscall(ffff80002335c1d0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002335c1d0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2cd9d139130, count: -16