/usr/src/linux-source-3.13.0/debian.master/d-i/modules/ is in linux-source-3.13.0 3.13.0-125.174.
This file is owned by root:root, with mode 0o755.
..
/usr/src/linux-source-3.13.0/debian.master/d-i/modules-powerpc/block-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules-powerpc/message-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules-powerpc/nic-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules-powerpc/scsi-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules-powerpc/storage-core-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/block-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/crypto-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/fat-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/fb-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/firewire-core-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/floppy-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/fs-core-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/fs-secondary-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/input-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/ipmi-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/irda-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/kernel-image
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/md-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/message-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/mouse-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/multipath-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/nfs-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/nic-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/nic-pcmcia-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/nic-shared-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/nic-usb-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/parport-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/pata-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/pcmcia-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/pcmcia-storage-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/plip-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/ppp-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/sata-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/scsi-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/serial-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/speakup-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/squashfs-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/storage-core-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/usb-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/virtio-modules
/usr/src/linux-source-3.13.0/debian.master/d-i/modules/vlan-modules