[OS-BUILD PATCHv2 4/6] redhat/configs: Enable CONFIG_PAGE_POISONING for Fedora and ARK

[Josh Poimboeuf (via Email Bridge)]

From: Josh Poimboeuf <jpoimboe(a)redhat.com&gt;

redhat/configs: Enable CONFIG_PAGE_POISONING for Fedora and ARK

CONFIG_PAGE_POISONING adds page poisoning to harden against information
leaks from freed data.  In our internal testing, it had no measurable
performance impact.

Enable it for Fedora and ARK.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1856174
Signed-off-by: Josh Poimboeuf <jpoimboe(a)redhat.com&gt;

diff a/redhat/configs/common/generic/CONFIG_PAGE_POISONING
b/redhat/configs/common/generic/CONFIG_PAGE_POISONING
--- a/redhat/configs/common/generic/CONFIG_PAGE_POISONING
+++ b/redhat/configs/common/generic/CONFIG_PAGE_POISONING
@@ -1 +1 @@
-# CONFIG_PAGE_POISONING is not set
+CONFIG_PAGE_POISONING=y

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/961