uvm_fault(fffffd806c81c7c0,d3748d7b000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a45d780,d3748d7b960) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a45d780) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cf453a5ebe0, count: -14
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(fffffd80762e98e8,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd80762e98d0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd80762e98d0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd800ed39050,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd800ed39050,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff80002a457720) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
namei(ffff80002a457720) at namei+0x7ca sys/kern/vfs_lookup.c:250
unp_connect(ffff800001687ac8,fffffd806c8b6800,ffff800038fbed18) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800001687ac8,fffffd807ea7d200,fffffd806c8b6800,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff800001687ac8,fffffd806c8b6800,ffff80002a4579a8,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff800038fbed18,5,ffff80002a457b28,e,ffff80002a457be0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmsg(ffff800038fbed18,ffff80002a457c90,ffff80002a457be0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603
syscall(ffff80002a457c90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a457c90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd3739e5ffe0, count: -15