Re: [PATCH] fscrypt: remove CRYPTO_CTR dependency

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On Tue, Dec 04, 2018 at 03:45:07PM -0800, Eric Biggers wrote:
> On Thu, Sep 06, 2018 at 12:43:41PM +0200, Ard Biesheuvel wrote:
> > On 5 September 2018 at 21:24, Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
> > > From: Eric Biggers <ebiggers@xxxxxxxxxx>
> > >
> > > fscrypt doesn't use the CTR mode of operation for anything, so there's
> > > no need to select CRYPTO_CTR.  It was added by commit 71dea01ea2ed
> > > ("ext4 crypto: require CONFIG_CRYPTO_CTR if ext4 encryption is
> > > enabled").  But, I've been unable to identify the arm64 crypto bug it
> > > was supposedly working around.
> > >
> > > I suspect the issue was seen only on some old Android device kernel
> > > (circa 3.10?).  So if the fix wasn't mistaken, the real bug is probably
> > > already fixed.  Or maybe it was actually a bug in a non-upstream crypto
> > > driver.
> > >
> > > So, remove the dependency.  If it turns out there's actually still a
> > > bug, we'll fix it properly.
> > >
> > > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> > 
> > Acked-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>

Thanks, applied.

					- Ted



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