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EVM: Only complain about a missing HMAC key once

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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>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
This commit is contained in:
Matthew Garrett 2017-10-11 12:11:12 -07:00 committed by Mimi Zohar
parent f00d797507
commit 0485d066d8
1 changed files with 1 additions and 1 deletions
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2
security/integrity/evm/evm_crypto.c
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@ -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;