linux-kernel - [PATCH v2] integrity: eliminate unnecessary "Problem loading X.509 certificate" msg

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Date: Tue,  9 Jan 2024 08:24:28 +0800
From: Coiby Xu <coxu@...hat.com>
To: linux-integrity@...r.kernel.org
Cc: itrymybest80@...tonmail.com,
	Eric Snowberg <eric.snowberg@...cle.com>,
	Mimi Zohar <zohar@...ux.ibm.com>,
	Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
	Paul Moore <paul@...l-moore.com>,
	James Morris <jmorris@...ei.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Jarkko Sakkinen <jarkko@...nel.org>,
	linux-security-module@...r.kernel.org (open list:SECURITY SUBSYSTEM),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2] integrity: eliminate unnecessary "Problem loading X.509 certificate" msg

Currently when the kernel fails to add a cert to the .machine keyring,
it will throw an error immediately in the function integrity_add_key.

Since the kernel will try adding to the .platform keyring next or throw
an error (in the caller of integrity_add_key i.e. add_to_machine_keyring),
so there is no need to throw an error immediately in integrity_add_key.

Reported-by: itrymybest80@...tonmail.com
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2239331
Fixes: d19967764ba8 ("integrity: Introduce a Linux keyring called machine")
Reviewed-by: Eric Snowberg <eric.snowberg@...cle.com>
Signed-off-by: Coiby Xu <coxu@...hat.com>
---
v2
 - improve patch subject [Mimi]
 - add Fixes tag [Jarkko]
 - add Reviewed-by tag from Eric
---
 security/integrity/digsig.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index df387de29bfa..45c3e5dda355 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -179,7 +179,8 @@ static int __init integrity_add_key(const unsigned int id, const void *data,
 				   KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(key)) {
 		rc = PTR_ERR(key);
-		pr_err("Problem loading X.509 certificate %d\n", rc);
+		if (id != INTEGRITY_KEYRING_MACHINE)
+			pr_err("Problem loading X.509 certificate %d\n", rc);
 	} else {
 		pr_notice("Loaded X.509 cert '%s'\n",
 			  key_ref_to_ptr(key)->description);
-- 
2.43.0