Re: [PATCH] LSM: add static to security_ops variable

[Alexey Dobriyan]

On Sun, Feb 7, 2010 at 1:24 PM, wzt wzt <wzt.wzt@xxxxxxxxx> wrote:
> security_ops was declared as a global variable, so other drivers or
> kernel code can easily change its value, like:

With your patch they still can.

> extern struct security_operations *security_ops;
> security_ops = NULL;
>
> then insmod this driver immediately, it will get an oops.  Other evil
> drivers can aslo fake this variable as extern.
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