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commit 74d74bb78aeccc9edc10db216d6be121cf7ec176 upstream.
__cacheline_aligned puts the data in the ".data..cacheline_aligned"
section, which isn't marked read-only i.e. it doesn't receive MMU
protection. Replace it with ____cacheline_aligned which does the right
thing and just aligns the data while keeping it in ".rodata".
Fixes: b5e0b032b6c3 ("crypto: aes - add generic time invariant AES cipher")
Cc: stable@vger.kernel.org
Reported-by: Qingfang Deng <dqfext@gmail.com>
Closes: https://lore.kernel.org/r/20260105074712.498-1-dqfext@gmail.com/
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260107052023.174620-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add inline helper function to check key length for AES algorithms.
The key can be 128, 192 or 256 bits size.
This function is used in the generic aes implementation.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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There are a few copies of the AES S-boxes floating around, so export
the ones from the AES library so that we can reuse them in other
modules.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Take the existing small footprint and mostly time invariant C code
and turn it into a AES library that can be used for non-performance
critical, casual use of AES, and as a fallback for, e.g., SIMD code
that needs a secondary path that can be taken in contexts where the
SIMD unit is off limits (e.g., in hard interrupts taken from kernel
context)
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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