Re: [PATCH] power: disable hibernation if module loading isdisabled

[Pavel Machek]

On Fri 2011-03-04 19:11:24, Vasiliy Kulikov wrote:
> If /proc/sys/kernel/modules_disabled is set to 1, then nobody (even full
> root) may not read/write arbitrary kernel memory.  In spite of it,
> hibernation allows anyone with an access to either /dev/snapshot or
> /sys/power/ make the full snapshot of the system.  This snapshot may be
> freely changed and uploaded back.

module loading has nothing to do with hibernation, and hibernation
already checks for CAP_ADMIN or something similary strong. I don't see
why this new check is needed.

In fact, you are probably breaking someone's setup right now.

> +	if (modules_disabled)
> +		return -EPERM;
> +
>  	error = platform_begin(platform_mode);

Hmm. How is this supposed to work with CONFIG_MODULES off?

NAK.
								Pavel
-- 
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