On Wed, Oct 12, 2022 at 08:24:38PM -0400, Sasha Levin wrote: > From: GUO Zihua <guozihua@xxxxxxxxxx> > > [ Upstream commit 307d343620e1fc7a6a2b7a1cdadb705532c9b6a5 ] > > CFI (Control Flow Integrity) is a safety feature allowing the system to > detect and react should a potential control flow hijacking occurs. In > particular, the Forward-Edge CFI protects indirect function calls by > ensuring the prototype of function that is actually called matches the > definition of the function hook. > > Since Linux now supports CFI, it will be a good idea to fix mismatched > return type for implementation of hooks. Otherwise this would get > cought out by CFI and cause a panic. And another that should be dropped from all stable branches, thanks. greg k-h
