We calculate two sizes during the allocation: "size", which is the in-segment size of this mutation, and "s", which is that plus the overhead. cycle() must be called with the latter, not the former, as doing otherwise may lead to buffer overflows. Signed-off-by: Glauber Costa <glauber@scylladb.com> Message-Id: <ccf346d8d0ebb44a1ba9fd069653bab0d7be0a61.1477063157.git.glauber@scylladb.com>