3 files changed, 9 insertions, 0 deletions

diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 919a80cb322e..2cfd7cb36e79 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -6,6 +6,7 @@
 #include <linux/romfs_fs.h>
 #include <linux/initrd.h>
 #include <linux/sched.h>
+#include <linux/freezer.h>
 
 #include "do_mounts.h"
 
diff --git a/init/initramfs.c b/init/initramfs.c
index d28c1094d7e5..85f04037ade1 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -182,6 +182,10 @@ static int __init do_collect(void)
 
 static int __init do_header(void)
 {
+        if (memcmp(collected, "070707", 6)==0) {
+                error("incorrect cpio method used: use -H newc option");
+                return 1;
+        }
         if (memcmp(collected, "070701", 6)) {
                 error("no cpio magic");
                 return 1;
diff --git a/init/main.c b/init/main.c
index 985c9ed86050..1174ae3aec8c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -74,6 +74,10 @@
 #error Sorry, your GCC is too old. It builds incorrect kernels.
 #endif
 
+#if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
+#warning gcc-4.1.0 is known to miscompile the kernel.  A different compiler version is recommended.
+#endif
+
 static int init(void *);
 
 extern void init_IRQ(void);