linux-kernel - [PATCH 03/10] scripts/basic/fixdep: Use the symbol "MAP_FAILED" in print

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 28 Oct 2016 10:33:41 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-kbuild@...r.kernel.org, Michal Marek <mmarek@...e.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 03/10] scripts/basic/fixdep: Use the symbol "MAP_FAILED" in
 print_deps()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 27 Oct 2016 18:18:54 +0200

Check the return value from a call of the function "mmap" by using
the preprocessor symbol "MAP_FAILED".

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 scripts/basic/fixdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index c9ce3e3..0dcec29 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -417,7 +417,7 @@ static void print_deps(void)
 		goto close_fd;
 	}
 	map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-	if ((long) map == -1) {
+	if (map == MAP_FAILED) {
 		perror("fixdep: mmap");
 		goto close_fd;
 	}
-- 
2.10.1