iscsi target: fix oops when adding reject pdu

commit b815fc12d4dd2b5586184fb4f867caff05a810d4 upstream.

This fixes a oops due to a double list add when adding a reject PDU for
iscsit_allocate_iovecs allocation failures. The cmd has already been
added to the conn_cmd_list in iscsit_setup_scsi_cmd, so this has us call
iscsit_reject_cmd.

Note that for ERL0 the reject PDU is not actually sent, so this patch
is not completely tested. Just verified we do not oops. The problem is the
add reject functions return -1 which is returned all the way up to
iscsi_target_rx_thread which for ERL0 will drop the connection.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 9559ea749d83e7275d31a5335d23bb8f032f41ac..5a3ea20e9cb52670c150d39a25f88af4a5149107 100644 (file)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1179,7 +1179,7 @@ iscsit_handle_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
         * traditional iSCSI block I/O.
         */
        if (iscsit_allocate_iovecs(cmd) < 0) {
-               return iscsit_add_reject_cmd(cmd,
+               return iscsit_reject_cmd(cmd,
                                ISCSI_REASON_BOOKMARK_NO_RESOURCES, buf);
        }
        immed_data = cmd->immediate_data;