[PATCH 3.2 72/87] ecryptfs: Fix memory leakage in keystore.c

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3.2.53-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: "Geyslan G. Bem" <geyslan@xxxxxxxxx>

commit 3edc8376c06133e3386265a824869cad03a4efd4 upstream.

In 'decrypt_pki_encrypted_session_key' function:

Initializes 'payload' pointer and releases it on exit.

Signed-off-by: Geyslan G. Bem <geyslan@xxxxxxxxx>
Signed-off-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 fs/ecryptfs/keystore.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1151,7 +1151,7 @@ decrypt_pki_encrypted_session_key(struct
 	struct ecryptfs_msg_ctx *msg_ctx;
 	struct ecryptfs_message *msg = NULL;
 	char *auth_tok_sig;
-	char *payload;
+	char *payload = NULL;
 	size_t payload_len;
 	int rc;
 
@@ -1206,6 +1206,7 @@ decrypt_pki_encrypted_session_key(struct
 out:
 	if (msg)
 		kfree(msg);
+	kfree(payload);
 	return rc;
 }
 

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