init/main.c: fix misleading "This architecture does not have kernel m…

…emory protection" message This message leads to thinking that memory protection is not implemented for the said architecture, whereas absence of CONFIG_STRICT_KERNEL_RWX only means that memory protection has not been selected at compile time. Don't print this message when CONFIG_ARCH_HAS_STRICT_KERNEL_RWX is selected by the architecture. Instead, print "Kernel memory protection not selected by kernel config." Link: http://lkml.kernel.org/r/62477e446d9685459d4f27d193af6ff1bd69d55f.1578557581.git.christophe.leroy@c-s.fr Signed-off-by: Christophe Leroy <[email protected]> Acked-by: Kees Cook <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Michael Ellerman <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
fracktal · Jan 31, 2020 · f596ded · f596ded
1 parent 283900e
commit f596ded
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/init/main.c b/init/main.c
@@ -1104,6 +1104,11 @@ static void mark_readonly(void)
 	} else
 		pr_info("Kernel memory protection disabled.\n");
 }
+#elif defined(CONFIG_ARCH_HAS_STRICT_KERNEL_RWX)
+static inline void mark_readonly(void)
+{
+	pr_warn("Kernel memory protection not selected by kernel config.\n");
+}
 #else
 static inline void mark_readonly(void)
 {