/usr/src/zfs-0.7.5/module/zcommon/ is in zfs-dkms 0.7.5-1ubuntu15.
This file is owned by root:root, with mode 0o755.
..
/usr/src/zfs-0.7.5/module/zcommon/Makefile.in
/usr/src/zfs-0.7.5/module/zcommon/zfs_comutil.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_deleg.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_aarch64_neon.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_avx512.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_intel.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_sse.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_superscalar.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_fletcher_superscalar4.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_namecheck.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_prop.c
/usr/src/zfs-0.7.5/module/zcommon/zfs_uio.c
/usr/src/zfs-0.7.5/module/zcommon/zpool_prop.c
/usr/src/zfs-0.7.5/module/zcommon/zprop_common.c