Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  ima: hashing large files bug fix
  kernel_read: redefine offset type

fs/exec.c

@@ -678,8 +678,8 @@ struct file *open_exec(const char *name)
 }
 EXPORT_SYMBOL(open_exec);
 
-int kernel_read(struct file *file, unsigned long offset,
-	char *addr, unsigned long count)
+int kernel_read(struct file *file, loff_t offset,
+		char *addr, unsigned long count)
 {
 	mm_segment_t old_fs;
 	loff_t pos = offset;

include/linux/fs.h

@@ -2123,7 +2123,7 @@ extern struct file *do_filp_open(int dfd, const char *pathname,
 		int open_flag, int mode, int acc_mode);
 extern int may_open(struct path *, int, int);
 
-extern int kernel_read(struct file *, unsigned long, char *, unsigned long);
+extern int kernel_read(struct file *, loff_t, char *, unsigned long);
 extern struct file * open_exec(const char *);
 
 /* fs/dcache.c -- generic fs support functions */

security/integrity/ima/ima_crypto.c

@@ -45,9 +45,9 @@ int ima_calc_hash(struct file *file, char *digest)
 {
 	struct hash_desc desc;
 	struct scatterlist sg[1];
-	loff_t i_size;
+	loff_t i_size, offset = 0;
 	char *rbuf;
-	int rc, offset = 0;
+	int rc;
 
 	rc = init_desc(&desc);
 	if (rc != 0)
@@ -67,6 +67,8 @@ int ima_calc_hash(struct file *file, char *digest)
 			rc = rbuf_len;
 			break;
 		}
+		if (rbuf_len == 0)
+			break;
 		offset += rbuf_len;
 		sg_init_one(sg, rbuf, rbuf_len);