uvm_fault(fffffd806c89f5d0,6279d93b000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650
upageflttrap(ffff8000363c3750,6279d93b000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff8000363c3750) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x79a9c9fb2950, count: -12
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:438
witness_checkorder(fffffd806c76f0c0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806c76f0a8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806c76f0a8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805f3d68c0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805f3d68c0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff80003c442d80) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
namei(ffff80003c442d80) at namei+0x7ca sys/kern/vfs_lookup.c:250
unp_connect(ffff80000163fac0,fffffd806c382100,ffff80003afd9ca8) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff80000163fac0,fffffd806a375100,fffffd806c382100,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff80000163fac0,fffffd806c382100,ffff80003c443008,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80003afd9ca8,3,ffff80003c443188,0,ffff80003c443240) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmsg(ffff80003afd9ca8,ffff80003c4432f0,ffff80003c443240) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603
syscall(ffff80003c4432f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4432f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8710d70fd00, count: -15