iser-target: Fix wrong allocation in the case of an empty text message
if text message dlength is 0, don't allocate a buffer for it, pass
NULL to iscsit_process_text_cmd.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 7f6a0d2..1d31ffb 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1351,17 +1351,19 @@
struct iscsi_conn *conn = isert_conn->conn;
u32 payload_length = ntoh24(hdr->dlength);
int rc;
- unsigned char *text_in;
+ unsigned char *text_in = NULL;
rc = iscsit_setup_text_cmd(conn, cmd, hdr);
if (rc < 0)
return rc;
- text_in = kzalloc(payload_length, GFP_KERNEL);
- if (!text_in) {
- isert_err("Unable to allocate text_in of payload_length: %u\n",
- payload_length);
- return -ENOMEM;
+ if (payload_length) {
+ text_in = kzalloc(payload_length, GFP_KERNEL);
+ if (!text_in) {
+ isert_err("Unable to allocate text_in of payload_length: %u\n",
+ payload_length);
+ return -ENOMEM;
+ }
}
cmd->text_in_ptr = text_in;