diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 7efa73d..20d4b22 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -103,8 +103,8 @@
 				size_t buflen, loff_t *fpos)
 {
 	ssize_t acc = 0, tmp;
-	size_t tsz, nr_bytes;
-	u64 start;
+	size_t tsz;
+	u64 start, nr_bytes;
 	struct vmcore *curr_m = NULL;
 
 	if (buflen == 0 || *fpos >= vmcore_size)
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 135871d..4b47a02 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -79,7 +79,7 @@
 struct vmcore {
 	struct list_head list;
 	unsigned long long paddr;
-	unsigned long size;
+	unsigned long long size;
 	loff_t offset;
 };