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redhat/configs: Enable INIT_STACK_ALL_ZERO for Fedora

Miko Larsson requested to merge mikoxyz/kernel-ark:hardening-init-stack-all-zero into os-build

In !961 (merged), it was proposed that STRUCTLEAK_BYREF_ALL should be enabled, but that specific proposal was rejected due to structleak being a GCC plugin. However, in GCC 12, support for INIT_STACK_ALL_ZERO was introduced, which (if I'm not mistaken) is functionally identical to STRUCTLEAK_BYREF_ALL, so we should probably enable this for Fedora.

Signed-off-by: Miko Larsson mikoxyzzz@gmail.com

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