From: Kostaras Nikolaos <nkost@intracomdefense.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] Prevent malloc with size 0
Date: Thu, 21 Oct 2010 12:24:01 +0300 [thread overview]
Message-ID: <4CC006B1.8000905@intracomdefense.com> (raw)
In case malloc is invoked with requested size 0, this patch will prevent
the execution of the allocation algorithm (because it corrupts the data
structures)
and will return 0 to the caller.
Signed-off-by: Nikolaos Kostaras <nkost@intracomdefense.com>
---
common/dlmalloc.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index fce7a76..d9e3ea9 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -2182,7 +2182,7 @@ Void_t* mALLOc(bytes) size_t bytes;
return 0;
}
- if ((long)bytes < 0) return 0;
+ if ((long)bytes <= 0) return 0;
nb = request2size(bytes); /* padded request size; */
--
1.6.4.4
next reply other threads:[~2010-10-21 9:24 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-21 9:24 Kostaras Nikolaos [this message]
2010-10-21 11:25 ` [U-Boot] [PATCH] Prevent malloc with size 0 Joakim Tjernlund
2010-10-21 11:32 ` Wolfgang Denk
2010-10-21 11:45 ` Joakim Tjernlund
2010-10-21 11:51 ` Wolfgang Denk
2010-10-21 11:56 ` Joakim Tjernlund
2010-10-21 12:02 ` Wolfgang Denk
2010-10-21 12:54 ` Joakim Tjernlund
2010-10-21 19:51 ` Mike Frysinger
2010-10-21 21:10 ` Graeme Russ
2010-10-21 21:27 ` Mike Frysinger
2012-03-31 19:59 ` Marek Vasut
2012-04-01 12:25 ` Joakim Tjernlund
2012-04-01 14:01 ` Marek Vasut
2012-04-01 14:15 ` Joakim Tjernlund
2012-04-01 14:21 ` Marek Vasut
2012-04-01 22:40 ` Graeme Russ
2012-04-01 23:45 ` Marek Vasut
2012-04-01 23:52 ` Graeme Russ
2012-04-02 0:13 ` Marek Vasut
2012-04-02 0:25 ` Graeme Russ
2012-04-02 1:04 ` Marek Vasut
2012-04-02 1:40 ` Graeme Russ
2012-04-02 2:51 ` Marek Vasut
2012-04-02 3:05 ` Graeme Russ
2012-04-02 6:39 ` Joakim Tjernlund
2012-04-02 3:12 ` Mike Frysinger
2012-04-02 3:16 ` Graeme Russ
2012-04-02 3:36 ` Marek Vasut
2012-04-02 3:43 ` Graeme Russ
2012-04-02 4:23 ` Marek Vasut
2012-04-02 4:27 ` Graeme Russ
2012-04-02 6:55 ` Joakim Tjernlund
2012-04-02 7:17 ` Graeme Russ
2012-04-02 7:40 ` Joakim Tjernlund
2012-04-02 14:05 ` Marek Vasut
2012-04-02 14:26 ` Joakim Tjernlund
2012-04-02 14:42 ` Marek Vasut
2012-04-02 15:08 ` Joakim Tjernlund
2012-04-02 15:23 ` Marek Vasut
2012-04-02 16:00 ` Joakim Tjernlund
2012-04-02 16:39 ` Marek Vasut
2012-04-02 17:22 ` Joakim Tjernlund
2012-04-02 18:00 ` Marek Vasut
2012-04-02 18:40 ` Joakim Tjernlund
2012-04-02 19:14 ` Mike Frysinger
2012-04-02 21:02 ` Joakim Tjernlund
2012-04-02 19:23 ` Marek Vasut
2012-04-02 20:28 ` Graeme Russ
2012-04-02 20:56 ` Joakim Tjernlund
2012-04-02 20:59 ` Graeme Russ
2012-04-02 21:14 ` Joakim Tjernlund
2012-04-02 23:35 ` Graeme Russ
2012-04-03 10:35 ` Graeme Russ
2012-10-16 6:31 ` Marek Vasut
2012-10-16 9:22 ` Joakim Tjernlund
2012-10-16 10:43 ` Marek Vasut
2012-10-16 11:46 ` Joakim Tjernlund
2012-10-16 10:43 ` Wolfgang Denk
2012-10-16 22:41 ` Graeme Russ
2012-04-02 3:10 ` Mike Frysinger
2012-04-02 3:36 ` Marek Vasut
2010-10-22 6:10 ` Joakim Tjernlund
2010-10-22 7:18 ` Reinhard Meyer
2010-10-22 7:47 ` Joakim Tjernlund
2010-10-22 7:20 ` Mike Frysinger
2010-10-22 7:37 ` Joakim Tjernlund
2010-10-22 7:55 ` Mike Frysinger
2010-10-22 8:34 ` Joakim Tjernlund
2010-10-22 15:18 ` Mike Frysinger
2010-10-22 16:40 ` Joakim Tjernlund
2010-10-22 17:06 ` Mike Frysinger
2010-10-23 9:14 ` Joakim Tjernlund
2010-10-22 17:36 ` Scott Wood
2010-10-23 9:23 ` Joakim Tjernlund
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