From: jvoisin <julien.voisin@dustri.org>
Date: Fri, 3 May 2024 13:43:43 +0000 (+0200)
Subject: Add a check for CONFIG_UNWIND_PATCH_PAC_INTO_SCS
X-Git-Tag: v0.6.10~57^2~1
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;ds=sidebyside;h=3ccd5268b84cd2e27c0e56b4903439d8adbdaa2c;p=kconfig-hardened-check.git

Add a check for CONFIG_UNWIND_PATCH_PAC_INTO_SCS

It allows to fallback to a shadow call stack on aarch64 if PAC isn't supported.
---

diff --git a/kernel_hardening_checker/checks.py b/kernel_hardening_checker/checks.py
index fa664e0..e0caab6 100644
--- a/kernel_hardening_checker/checks.py
+++ b/kernel_hardening_checker/checks.py
@@ -241,6 +241,7 @@ def add_kconfig_checks(l, arch):
     if arch == 'ARM64':
         l += [KconfigCheck('self_protection', 'kspp', 'ARM64_SW_TTBR0_PAN', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'SHADOW_CALL_STACK', 'y')]
+        l += [KconfigCheck('self_protection', 'kspp', 'UNWIND_PATCH_PAC_INTO_SCS', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'KASAN_HW_TAGS', 'y')] # see also: kasan=on, kasan.stacktrace=off, kasan.fault=panic
     if arch == 'X86_32':
         l += [KconfigCheck('self_protection', 'kspp', 'PAGE_TABLE_ISOLATION', 'y')]