netdev - Re: [PATCH] netlink: Fix kfree NULL pointer

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:	Wed, 08 Sep 2010 07:55:24 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	jovi zhang <bookjovi@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Johannes Berg <johannes.berg@...el.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alexey Dobriyan <adobriyan@...nvz.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] netlink: Fix kfree NULL pointer

Le mercredi 08 septembre 2010 à 13:33 +0800, jovi zhang a écrit :

> YES, maybe kfree(NULL) is legal, but I cannot see there have any need
> to invoke kfree(NULL) in this function.
>  Also I check kfree usage in other code, I havn't find any kfree(NULL) usage.

We have hundred call sites doing kfree(NULL), if it makes code shorter.

Its usually code path handling exceptions (errors if you prefer), and we
prefer to use ugly gotos, and even kfree(NULL), to make it as short as
possible.



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html