[PATCH] ima: Fix warn potential negative subtraction from max

From: Vasyl Gomonovych
Date: Thu Dec 21 2017 - 10:56:10 EST


Found by smatch:
security/integrity/ima/ima_queue.c:122 ima_add_digest_entry() warn:
potential negative subtraction from max '(~0)- size'

Signed-off-by: Vasyl Gomonovych <gomonovych@xxxxxxxxx>
---
security/integrity/ima/ima_queue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/integrity/ima/ima_queue.c b/security/integrity/ima/ima_queue.c
index a02a86d51102..446018478b81 100644
--- a/security/integrity/ima/ima_queue.c
+++ b/security/integrity/ima/ima_queue.c
@@ -116,7 +116,7 @@ static int ima_add_digest_entry(struct ima_template_entry *entry,
}

if (binary_runtime_size != ULONG_MAX) {
- int size;
+ unsigned int size;

size = get_binary_runtime_size(entry);
binary_runtime_size = (binary_runtime_size < ULONG_MAX - size) ?
--
1.9.1