[PATCH v2 2/4] crypto: ecdh - fix 'ecdh_init'
From: Hui Tang <hidden>
Date: 2021-05-22 02:24:44
Also in:
lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
NIST P192 is not unregistered if failed to register NIST P256, actually it need to unregister the algorithms already registered. Signed-off-by: Hui Tang <redacted> --- crypto/ecdh.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/crypto/ecdh.c b/crypto/ecdh.c
index 4227d35..e2c4808 100644
--- a/crypto/ecdh.c
+++ b/crypto/ecdh.c@@ -183,7 +183,16 @@ static int ecdh_init(void) ret = crypto_register_kpp(&ecdh_nist_p192); ecdh_nist_p192_registered = ret == 0; - return crypto_register_kpp(&ecdh_nist_p256); + ret = crypto_register_kpp(&ecdh_nist_p256); + if (ret) + goto nist_p256_error; + + return 0; + +nist_p256_error: + if (ecdh_nist_p192_registered) + crypto_unregister_kpp(&ecdh_nist_p192); + return ret; } static void ecdh_exit(void)
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2.8.1