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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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877ccce7cb
It turns out I had misunderstood how the x86_match_cpu() function works. It evaluates a logical OR of the matching conditions, not logical AND. This caused the CPU feature checks for AEGIS to pass even if only SSE2 (but not AES-NI) was supported (or vice versa), leading to potential crashes if something tried to use the registered algs. This patch switches the checks to a simpler method that is used e.g. in the Camellia x86 code. The patch also removes the MODULE_DEVICE_TABLE declarations which actually seem to cause the modules to be auto-loaded at boot, which is not desired. The crypto API on-demand module loading is sufficient. Fixes:1d373d4e8e("crypto: x86 - Add optimized AEGIS implementations") Fixes:6ecc9d9ff9("crypto: x86 - Add optimized MORUS implementations") Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> Tested-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* The MORUS-640 Authenticated-Encryption Algorithm
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* Glue for SSE2 implementation
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*
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* Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>
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* Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <crypto/internal/aead.h>
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#include <crypto/morus640_glue.h>
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#include <linux/module.h>
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#include <asm/fpu/api.h>
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#include <asm/cpu_device_id.h>
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asmlinkage void crypto_morus640_sse2_init(void *state, const void *key,
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const void *iv);
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asmlinkage void crypto_morus640_sse2_ad(void *state, const void *data,
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unsigned int length);
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asmlinkage void crypto_morus640_sse2_enc(void *state, const void *src,
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void *dst, unsigned int length);
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asmlinkage void crypto_morus640_sse2_dec(void *state, const void *src,
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void *dst, unsigned int length);
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asmlinkage void crypto_morus640_sse2_enc_tail(void *state, const void *src,
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void *dst, unsigned int length);
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asmlinkage void crypto_morus640_sse2_dec_tail(void *state, const void *src,
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void *dst, unsigned int length);
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asmlinkage void crypto_morus640_sse2_final(void *state, void *tag_xor,
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u64 assoclen, u64 cryptlen);
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MORUS640_DECLARE_ALGS(sse2, "morus640-sse2", 400);
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static int __init crypto_morus640_sse2_module_init(void)
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{
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if (!boot_cpu_has(X86_FEATURE_XMM2) ||
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!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
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!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
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return -ENODEV;
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return crypto_register_aeads(crypto_morus640_sse2_algs,
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ARRAY_SIZE(crypto_morus640_sse2_algs));
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}
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static void __exit crypto_morus640_sse2_module_exit(void)
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{
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crypto_unregister_aeads(crypto_morus640_sse2_algs,
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ARRAY_SIZE(crypto_morus640_sse2_algs));
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}
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module_init(crypto_morus640_sse2_module_init);
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module_exit(crypto_morus640_sse2_module_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Ondrej Mosnacek <omosnacek@gmail.com>");
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MODULE_DESCRIPTION("MORUS-640 AEAD algorithm -- SSE2 implementation");
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MODULE_ALIAS_CRYPTO("morus640");
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MODULE_ALIAS_CRYPTO("morus640-sse2");
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