linux-kernel - Re: [PATCH] security: keys: add NULL checking for key->type->instantiate

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Message-ID: <31395.1549492013@warthog.procyon.org.uk>
Date:   Wed, 06 Feb 2019 22:26:53 +0000
From:   David Howells <dhowells@...hat.com>
To:     Geliang Tang <geliangtang@...il.com>
Cc:     dhowells@...hat.com, James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] security: keys: add NULL checking for key->type->instantiate

Geliang Tang <geliangtang@...il.com> wrote:

> key->type->instantiate can be NULL, add NULL checking to prevent
> NULL pointer dereference in __key_instantiate_and_link().

Do you have an oops report or test case for this?

David