linux-kernel - [PATCH] Little memset

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-next>] [day] [month] [year] [list]

Message-ID: <CA+XhMqyP=OZ5=GF1L=1EkNuNWJfk0t=GJWvQd=K46vT-sq9L6A@mail.gmail.com>
Date:   Sat, 24 Nov 2018 15:35:05 +0000
From:   David CARLIER <devnexen@...il.com>
To:     linux-kernel@...r.kernel.org, alexander.shishkin@...ux.intel.com,
        aryabinin@...tuozzo.com, gregkh@...uxfoundation.org,
        andriy.shevchenko@...ux.intel.com
Subject: [PATCH] Little memset_explicit optimisation

Subject: [PATCH] memzero_explicit, optimisation for size.


Using the return value of memset for save/load sake.


Signed-off-by: David Carlier <devnexen@...il.com>

---

 lib/string.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/lib/string.c b/lib/string.c

index 38e4ca08e757..92da04a0213b 100644

--- a/lib/string.c

+++ b/lib/string.c

@@ -720,7 +720,7 @@ EXPORT_SYMBOL(memset);

  */

 void memzero_explicit(void *s, size_t count)

 {

- memset(s, 0, count);

+ s = memset(s, 0, count);

  barrier_data(s);

 }

 EXPORT_SYMBOL(memzero_explicit);

-- 

2.19.1