linux-kernel - [PATCH 27/27] lockdown: Print current->comm in restriction messages

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Message-Id: <20190306235913.6631-28-matthewgarrett@google.com>
Date:   Wed,  6 Mar 2019 15:59:13 -0800
From:   Matthew Garrett <matthewgarrett@...gle.com>
To:     jmorris@...ei.org
Cc:     linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, dhowells@...hat.com
Subject: [PATCH 27/27] lockdown: Print current->comm in restriction messages

From: David Howells <dhowells@...hat.com>

Print the content of current->comm in messages generated by lockdown to
indicate a restriction that was hit.  This makes it a bit easier to find
out what caused the message.

The message now patterned something like:

	Lockdown: <comm>: <what> is restricted; see man kernel_lockdown.7

Signed-off-by: David Howells <dhowells@...hat.com>
Signed-off-by: Matthew Garrett <matthewgarrett@...gle.com>
---
 security/lock_down.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/lock_down.c b/security/lock_down.c
index cfbc2c39712b..5243b55b3c1f 100644
--- a/security/lock_down.c
+++ b/security/lock_down.c
@@ -58,8 +58,8 @@ void __init init_lockdown(void)
 bool __kernel_is_locked_down(const char *what, bool first)
 {
 	if (what && first && kernel_locked_down)
-		pr_notice("Lockdown: %s is restricted; see man kernel_lockdown.7\n",
-			  what);
+		pr_notice("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n",
+			  current->comm, what);
 	return kernel_locked_down;
 }
 EXPORT_SYMBOL(__kernel_is_locked_down);
-- 
2.21.0.352.gf09ad66450-goog