linux-kernel - Re: [PATCH 0/5] lib/crypto: Poly1305 fixes

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Message-ID: <20250709191635.GA28537@sol>
Date: Wed, 9 Jul 2025 12:16:35 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
	"Jason A . Donenfeld" <Jason@...c4.com>,
	linux-arm-kernel@...ts.infradead.org, x86@...nel.org
Subject: Re: [PATCH 0/5] lib/crypto: Poly1305 fixes

On Sun, Jul 06, 2025 at 04:10:55PM -0700, Eric Biggers wrote:
> This series is also available at:                                                                        
>                                                                         
>     git fetch https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git poly1305-fixes
> 
> This series fixes the arm, arm64, and x86 Poly1305 functions to not
> corrupt random tasks' registers when called in the "wrong" context.  It
> also fixes a performance regression on x86 with short messages.
> 
> This series is needed for my upcoming poly1305_kunit test to pass.
> 
> Eric Biggers (5):
>   lib/crypto: arm/poly1305: Remove unneeded empty weak function
>   lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts
>   lib/crypto: arm64/poly1305: Fix register corruption in no-SIMD
>     contexts
>   lib/crypto: x86/poly1305: Fix register corruption in no-SIMD contexts
>   lib/crypto: x86/poly1305: Fix performance regression on short messages
> 
>  lib/crypto/arm/poly1305-glue.c   |  8 ++----
>  lib/crypto/arm64/poly1305-glue.c |  3 +-
>  lib/crypto/x86/poly1305_glue.c   | 48 +++++++++++++++++++++++++++++++-
>  3 files changed, 51 insertions(+), 8 deletions(-)
> 
> 
> base-commit: f1da28dfadd26ef95bbd0b1ddf066e7ffe1505ff

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/log/?h=libcrypto-next

- Eric