Re: [PATCH v2 1/2] btrfs: add authentication support

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On 06/05/2020 00:37, Eric Biggers wrote:
> They replace the current content of the block device with the content at an
> earlier time.

We could mitigate this (at a later time probably), by writing the super 
block generation into some trusted store like a TPM.

But I think this would need general support from the kernel.

But thanks for showing me this attack, I'll document that this attack 
will still work.




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