From: Matthew Garrett <mjg59@google.com>
To: linux-integrity@vger.kernel.org
Cc: zohar@linux.vnet.ibm.com, Matthew Garrett <mjg59@google.com>
Subject: [PATCH] EVM: Only complain about a missing HMAC key once
Date: Tue, 10 Oct 2017 15:26:40 -0700 [thread overview]
Message-ID: <20171010222640.5539-1-mjg59@google.com> (raw)
A system can validate EVM digital signatures without requiring an HMAC
key, but every EVM validation will generate a kernel error. Change this
so we only generate an error once.
Signed-off-by: Matthew Garrett <mjg59@google.com>
---
security/integrity/evm/evm_crypto.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 6435f12b0067..abe53b28f3e3 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -80,7 +80,7 @@ static struct shash_desc *init_desc(char type)
if (type == EVM_XATTR_HMAC) {
if (!(evm_initialized & EVM_INIT_HMAC)) {
- pr_err("HMAC key is not set\n");
+ pr_err_once("HMAC key is not set\n");
return ERR_PTR(-ENOKEY);
}
tfm = &hmac_tfm;
--
2.14.2.920.gcf0c67979c-goog
reply other threads:[~2017-10-10 22:26 UTC|newest]
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