/usr/src/ is in volatility-tools 2.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/src/volatility-tools/linux/Makefile.enterprise
/usr/src/volatility-tools/
/usr/src/volatility-tools/mac/
/usr/src/volatility-tools/mac/mac_create_all_profiles.py
/usr/src/volatility-tools/mac/convert.py
/usr/src/volatility-tools/mac/generate_profile_list.py
/usr/src/volatility-tools/vtype_diff.py
/usr/src/volatility-tools/windows/
/usr/src/volatility-tools/windows/parsesummary.py
/usr/src/volatility-tools/linux/
/usr/src/volatility-tools/linux/module.c
/usr/src/volatility-tools/linux/Makefile
/usr/src/volatility-tools/linux/kcore/
/usr/src/volatility-tools/linux/kcore/elf.h
/usr/src/volatility-tools/linux/kcore/getkcore.c
/usr/src/volatility-tools/linux/kcore/getkcore.h
/usr/src/volatility-tools/linux/kcore/Makefile