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authorHangbin Liu <liuhangbin@gmail.com>2021-06-03 01:53:40 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2021-06-11 15:03:29 +0800
commit1b82435d17774f3eaab35dce239d354548aa9da2 (patch)
tree4121f811a7434a292843e62453ee7ddd4f145bb8 /drivers/crypto
parenta8bc4f5e7a72e4067f5afd7e98b61624231713ca (diff)
crypto: x86/curve25519 - fix cpu feature checking logic in mod_exit
In curve25519_mod_init() the curve25519_alg will be registered only when (X86_FEATURE_BMI2 && X86_FEATURE_ADX). But in curve25519_mod_exit() it still checks (X86_FEATURE_BMI2 || X86_FEATURE_ADX) when do crypto unregister. This will trigger a BUG_ON in crypto_unregister_alg() as alg->cra_refcnt is 0 if the cpu only supports one of X86_FEATURE_BMI2 and X86_FEATURE_ADX. Fixes: 07b586fe0662 ("crypto: x86/curve25519 - replace with formally verified implementation") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
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