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c0cb86e1d5
Rather than using the clunky, old, slower wireguard-linux-compat out of tree module, this commit does a patch-by-patch backport of upstream's wireguard to 5.4. This specific backport is in widespread use, being part of SUSE's enterprise kernel, Oracle's enterprise kernel, Google's Android kernel, Gentoo's distro kernel, and probably more I've forgotten about. It's definately the "more proper" way of adding wireguard to a kernel than the ugly compat.h hell of the wireguard-linux-compat repo. And most importantly for OpenWRT, it allows using the same module configuration code for 5.10 as for 5.4, with no need for bifurcation. These patches are from the backport tree which is maintained in the open here: https://git.zx2c4.com/wireguard-linux/log/?h=backport-5.4.y I'll be sending PRs to update this as needed. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> (cherry picked from commit3888fa7880) (cherry picked from commitd540725871) (cherry picked from commit196f3d586f) (cherry picked from commit3500fd7938) (cherry picked from commit23b801d3ba) (cherry picked from commit0c0cb97da7) (cherry picked from commit2a27f6f90a) Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
39 lines
1.6 KiB
Diff
39 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Ard Biesheuvel <ardb@kernel.org>
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Date: Sun, 13 Dec 2020 15:39:29 +0100
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Subject: [PATCH] crypto: arm/chacha-neon - add missing counter increment
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commit fd16931a2f518a32753920ff20895e5cf04c8ff1 upstream.
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Commit 86cd97ec4b943af3 ("crypto: arm/chacha-neon - optimize for non-block
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size multiples") refactored the chacha block handling in the glue code in
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a way that may result in the counter increment to be omitted when calling
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chacha_block_xor_neon() to process a full block. This violates the skcipher
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API, which requires that the output IV is suitable for handling more input
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as long as the preceding input has been presented in round multiples of the
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block size. Also, the same code is exposed via the chacha library interface
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whose callers may actually rely on this increment to occur even for final
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blocks that are smaller than the chacha block size.
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So increment the counter after calling chacha_block_xor_neon().
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Fixes: 86cd97ec4b943af3 ("crypto: arm/chacha-neon - optimize for non-block size multiples")
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Reported-by: Eric Biggers <ebiggers@kernel.org>
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Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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---
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arch/arm/crypto/chacha-glue.c | 1 +
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1 file changed, 1 insertion(+)
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--- a/arch/arm/crypto/chacha-glue.c
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+++ b/arch/arm/crypto/chacha-glue.c
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@@ -60,6 +60,7 @@ static void chacha_doneon(u32 *state, u8
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chacha_block_xor_neon(state, d, s, nrounds);
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if (d != dst)
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memcpy(dst, buf, bytes);
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+ state[12]++;
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}
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}
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