[ 072/171] ceph: messenger: check return from get_authorizer
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2012-11-22 22:04:13
Also in:
lkml
3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Elder <redacted> (cherry picked from commit ed96af646011412c2bf1ffe860db170db355fae5) In prepare_connect_authorizer(), a connection's get_authorizer method is called but ignores its return value. This function can return an error, so check for it and return it if that ever occurs. Signed-off-by: Alex Elder <redacted> Reviewed-by: Sage Weil <redacted> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ceph/messenger.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c@@ -658,6 +658,7 @@ static int prepare_connect_authorizer(st void *auth_buf; int auth_len; int auth_protocol; + int ret; if (!con->ops->get_authorizer) { con->out_connect.authorizer_protocol = CEPH_AUTH_UNKNOWN;
@@ -673,11 +674,14 @@ static int prepare_connect_authorizer(st auth_buf = NULL; auth_len = 0; auth_protocol = CEPH_AUTH_UNKNOWN; - con->ops->get_authorizer(con, &auth_buf, &auth_len, &auth_protocol, - &con->auth_reply_buf, &con->auth_reply_buf_len, - con->auth_retry); + ret = con->ops->get_authorizer(con, &auth_buf, &auth_len, + &auth_protocol, &con->auth_reply_buf, + &con->auth_reply_buf_len, con->auth_retry); mutex_lock(&con->mutex); + if (ret) + return ret; + if (test_bit(CLOSED, &con->state) || test_bit(OPENING, &con->state)) return -EAGAIN;