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Message-Id: <201103230351.p2N3pqSG086890@www262.sakura.ne.jp>
Date: Wed, 23 Mar 2011 12:51:52 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: jj@...osbits.net
Cc: linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][RFC] Null short-circuit for selinux_cred_free()
Jesper Juhl wrote:
> Let selinux_cred_free accept NULL pointers.
No need to do so.
> If we don't do this, then we can crash if someone manages to pass NULL to
> cred_free. Seems to me it's better to just do nothing in that case rather
> than crash.
If cred == NULL, put_cred_rcu(NULL) causes the kernel to panic before calling
LSM hooks.
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