Re: [PATCH v2 2/6] driver core: Add common support to skip probe for un-authorized devices

From: Michael S. Tsirkin
Date: Thu Sep 30 2021 - 10:58:22 EST


On Thu, Sep 30, 2021 at 10:43:05AM -0400, Alan Stern wrote:
> I don't see any point in talking about "untrusted drivers". If a
> driver isn't trusted then it doesn't belong in your kernel. Period.
> When you load a driver into your kernel, you are implicitly trusting
> it (aside from limitations imposed by security modules).

Trusting it to do what? Historically a ton of drivers did not
validate input from devices they drive. Most still don't.

> The code
> it contains, the module_init code in particular, runs with full
> superuser permissions.

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MST