eCryptfs: initialize payload_len in keystore.c

This is meant to remove a compiler warning.  It should not make any
functional change.

payload_len should be initialized when it is passed to
write_tag_64_packet() as a pointer.  If that call fails, this function
should return early, and payload_len won't be used.

Signed-off-by: Simon Que <sque@chromium.org>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 2333203a120b3b853f71ef011a0755a3be04fd6a..6154cde3a052b7a233b1be06dc5b38667a846810 100644 (file)
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1150,7 +1150,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
        struct ecryptfs_message *msg = NULL;
        char *auth_tok_sig;
        char *payload;
-       size_t payload_len;
+       size_t payload_len = 0;
        int rc;
 
        rc = ecryptfs_get_auth_tok_sig(&auth_tok_sig, auth_tok);