Commit 6cc44a6f authored by Nicholas Bellinger's avatar Nicholas Bellinger

iser-target: Add missing target_put_sess_cmd for ImmedateData failure

This patch addresses a bug where an early exception for SCSI WRITE
with ImmediateData=Yes was missing the target_put_sess_cmd() call
to drop the extra se_cmd->cmd_kref reference obtained during the
normal iscsit_setup_scsi_cmd() codepath execution.

This bug was manifesting itself during session shutdown within
isert_cq_rx_comp_err() where target_wait_for_sess_cmds() would
end up waiting indefinately for the last se_cmd->cmd_kref put to
occur for the failed SCSI WRITE + ImmediateData descriptors.

This fix follows what traditional iscsi-target code already does
for the same failure case within iscsit_get_immediate_data().
Reported-by: default avatarSagi Grimberg <sagig@dev.mellanox.co.il>
Cc: Sagi Grimberg <sagig@dev.mellanox.co.il>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 1e1110c4
...@@ -1210,6 +1210,8 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn, ...@@ -1210,6 +1210,8 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
if (!rc && dump_payload == false && unsol_data) if (!rc && dump_payload == false && unsol_data)
iscsit_set_unsoliticed_dataout(cmd); iscsit_set_unsoliticed_dataout(cmd);
else if (dump_payload && imm_data)
target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
return 0; return 0;
} }
......
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