On Thu, 4 Mar 2021, Frederic Fauberteau wrote:
In my daily insecurity report, I can see: Checking setuid files and devices: Setuid/device find errors: find: fts_read: Input/output error ... Do you have any idea to identify the source of the problem?
As a first step, try repeating the find. As root: find / >/dev/null -RVP