--- a/init/main.c
+++ b/init/main.c
-@@ -368,6 +368,26 @@ static void __init setup_command_line(ch
- strcpy(static_command_line, command_line);
- }
+@@ -351,6 +351,29 @@ static inline void setup_nr_cpu_ids(void
+ static inline void smp_prepare_cpus(unsigned int maxcpus) { }
+ #endif
+#ifdef CONFIG_MANGLE_BOOTARGS
+static void __init mangle_bootargs(char *command_line)
+ char *rootfs;
+
+ rootdev = strstr(command_line, "root=/dev/mtdblock");
-+ strncpy(rootdev, "mangled_rootblock=", 18);
++
++ if (rootdev)
++ strncpy(rootdev, "mangled_rootblock=", 18);
+
+ rootfs = strstr(command_line, "rootfstype");
-+ strncpy(rootfs, "mangled_fs", 10);
++
++ if (rootfs)
++ strncpy(rootfs, "mangled_fs", 10);
+
+}
+#else
+{
+}
+#endif
-+
+
/*
- * We need to finalize in a non-__init function or else race conditions
- * between the root thread and the init thread may cause start_kernel to
-@@ -519,6 +539,7 @@ asmlinkage __visible void __init start_k
+ * We need to store the untouched command line for future reference.
+ * We also need to store the touched command line since the parameter
+@@ -519,6 +542,7 @@ asmlinkage __visible void __init start_k
pr_notice("%s", linux_banner);
setup_arch(&command_line);
mm_init_cpumask(&init_mm);