linux-kernel - [PATCH v3] keys: remove __user annotation from function prototype

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Date:   Tue, 30 Aug 2022 12:19:40 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>, Jann Horn <jannh@...gle.com>,
        David Howells <dhowells@...hat.com>,
        Jarkko Sakkinen <jarkko@...nel.org>, keyrings@...r.kernel.org
Subject: [PATCH v3] keys: remove __user annotation from function prototype

Remove a missed __user annotation from the prototype for
keyring_read(). This cures a sparse warning when it complains about
the difference in the prototype and the function definition.

security/keys/keyring.c:481:13: sparse:    long static [signed] [toplevel] keyring_read( ... )
security/keys/keyring.c:81:13: sparse:    long static [addressable] [signed] [toplevel] keyring_read( ... )

Fixes: 796e46f9e2cb ("keys: Remove outdated __user annotations").
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Jann Horn <jannh@...gle.com>
Cc: David Howells <dhowells@...hat.com>
Cc: Jarkko Sakkinen <jarkko@...nel.org>
Cc: keyrings@...r.kernel.org
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
---
v2: rebase/resend; no changes
v3: add Rev-by from Jarkko; resend

 security/keys/keyring.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -79,7 +79,7 @@ static void keyring_revoke(struct key *k
 static void keyring_destroy(struct key *keyring);
 static void keyring_describe(const struct key *keyring, struct seq_file *m);
 static long keyring_read(const struct key *keyring,
-			 char __user *buffer, size_t buflen);
+			 char *buffer, size_t buflen);
 
 struct key_type key_type_keyring = {
 	.name		= "keyring",