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target: Check idr_get_new return value in iscsi_login_zero_tsih_s1

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This patch updates iscsi_login_zero_tsih_s1() usage for generating
iscsi_session->session_index to properly check the return value from
idr_get_new(), and reject the iSCSI login attempt with exception
status ISCSI_LOGIN_STATUS_NO_RESOURCES in the event of a failure.

Signed-off-by: Benjamin Wang <cpwang2009@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Benjamin Wang 2012-08-26 18:04:10 +08:00 committed by Nicholas Bellinger
parent 4c054ba63a
commit 13b5533a38
1 changed files with 10 additions and 1 deletions
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11
drivers/target/iscsi/iscsi_target_login.c
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@ -221,6 +221,7 @@ static int iscsi_login_zero_tsih_s1(
{
struct iscsi_session *sess = NULL;
struct iscsi_login_req *pdu = (struct iscsi_login_req *)buf;
int ret;
sess = kzalloc(sizeof(struct iscsi_session), GFP_KERNEL);
if (!sess) {
@ -257,9 +258,17 @@ static int iscsi_login_zero_tsih_s1(
return -ENOMEM;
}
spin_lock(&sess_idr_lock);
idr_get_new(&sess_idr, NULL, &sess->session_index);
ret = idr_get_new(&sess_idr, NULL, &sess->session_index);
spin_unlock(&sess_idr_lock);
if (ret < 0) {
pr_err("idr_get_new() for sess_idr failed\n");
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
kfree(sess);
return -ENOMEM;
}
sess->creation_time = get_jiffies_64();
spin_lock_init(&sess->session_stats_lock);
/*