On Thu, Oct 13, 2022 at 07:55:36AM +0200, Greg Kroah-Hartman wrote:
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.
Ack, I'll drop this and the rest of the staging patches you've pointed
out.
--
Thanks,
Sasha
