From: Jianpeng Ma <majianpeng@gmail.com>
Date: Thu, 10 Jan 2013 12:19:27 +0000 (+0100)
Subject: Fix a potential integer overflow
X-Git-Tag: fio-2.0.14~132
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=1983e3271c20a5dca84ac1ad872e44dd9e62e6b8

Fix a potential integer overflow

Because nr_files and new_size are not same types.It can cause new_size
less than zero.Then realloc will be failed.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/filesetup.c b/filesetup.c
index b1ca9217..69eb37cd 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -1074,7 +1074,7 @@ int add_file(struct thread_data *td, const char *fname)
 	fio_file_reset(f);
 
 	if (td->files_size <= td->files_index) {
-		int new_size = td->o.nr_files + 1;
+		unsigned int new_size = td->o.nr_files + 1;
 
 		dprint(FD_FILE, "resize file array to %d files\n", new_size);