landlock: Prepare to add second errata

JIRA: https://issues.redhat.com/browse/RHEL-125143

Upstream Status: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

commit 6d9ac5e
Author: Mickaël Salaün <mic@digikod.net>
Date:   Tue Mar 18 17:14:39 2025 +0100

    landlock: Prepare to add second errata

    Potentially include errata for Landlock ABI v5 (Linux 6.10) and v6
    (Linux 6.12).  That will be useful for the following signal scoping
    erratum.

    As explained in errata.h, this commit should be backportable without
    conflict down to ABI v5.  It must then not include the errata/abi-6.h
    file.

    Fixes: 54a6e6b ("landlock: Add signal scoping")
    Cc: Günther Noack <gnoack@google.com>
    Cc: stable@vger.kernel.org
    Link: https://lore.kernel.org/r/20250318161443.279194-5-mic@digikod.net
    Signed-off-by: Mickaël Salaün <mic@digikod.net>

Signed-off-by: Štěpán Horáček <shoracek@redhat.com>

Author: shoracek

security/landlock/errata.h

@@ -63,6 +63,18 @@ static const struct landlock_erratum landlock_errata_init[] __initconst = {
 #endif
 #undef LANDLOCK_ERRATA_ABI
 
+#define LANDLOCK_ERRATA_ABI 5
+#if __has_include("errata/abi-5.h")
+#include "errata/abi-5.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 6
+#if __has_include("errata/abi-6.h")
+#include "errata/abi-6.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
 /*
  * For each new erratum, we need to include all the ABI files up to the impacted
  * ABI to make all potential future intermediate errata easy to backport.