linux-kernel - [PATCH 5.4 176/261] ima: Evaluate error in init

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Message-Id: <20200619141658.356242269@linuxfoundation.org>
Date:   Fri, 19 Jun 2020 16:33:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Roberto Sassu <roberto.sassu@...wei.com>,
        James Morris <jamorris@...ux.microsoft.com>,
        Mimi Zohar <zohar@...ux.ibm.com>
Subject: [PATCH 5.4 176/261] ima: Evaluate error in init_ima()

From: Roberto Sassu <roberto.sassu@...wei.com>

commit e144d6b265415ddbdc54b3f17f4f95133effa5a8 upstream.

Evaluate error in init_ima() before register_blocking_lsm_notifier() and
return if not zero.

Cc: stable@...r.kernel.org # 5.3.x
Fixes: b16942455193 ("ima: use the lsm policy update notifier")
Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
Reviewed-by: James Morris <jamorris@...ux.microsoft.com>
Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 security/integrity/ima/ima_main.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -712,6 +712,9 @@ static int __init init_ima(void)
 		error = ima_init();
 	}
 
+	if (error)
+		return error;
+
 	error = register_blocking_lsm_notifier(&ima_lsm_policy_notifier);
 	if (error)
 		pr_warn("Couldn't register LSM notifier, error %d\n", error);