diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-07-03 03:11:48 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-07-06 22:01:23 -0700 |
| commit | 186a9647019587b3784694894c4d136fd00cfd7b (patch) | |
| tree | 47864da1726666d59bfa20a9b346b06d4b948218 /drivers/target/iscsi | |
| parent | 561bf15892375597ee59d473a704a3e634c4f311 (diff) | |
iscsi-target: Fix ISCSI_OP_SCSI_TMFUNC handling for iser
This patch adds target_get_sess_cmd reference counting for
iscsit_handle_task_mgt_cmd(), and adds a target_put_sess_cmd()
for the failure case.
It also fixes a bug where ISCSI_OP_SCSI_TMFUNC type commands
where leaking iscsi_cmd->i_conn_node and eventually triggering
an OOPs during struct isert_conn shutdown.
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/iscsi')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 4319dad7d919..c30ec1d5756e 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1737,8 +1737,8 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, struct se_tmr_req *se_tmr; struct iscsi_tmr_req *tmr_req; struct iscsi_tm *hdr; - int out_of_order_cmdsn = 0; - int ret; + int out_of_order_cmdsn = 0, ret; + bool sess_ref = false; u8 function; hdr = (struct iscsi_tm *) buf; @@ -1794,6 +1794,9 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, conn->sess->se_sess, 0, DMA_NONE, MSG_SIMPLE_TAG, cmd->sense_buffer + 2); + target_get_sess_cmd(conn->sess->se_sess, &cmd->se_cmd, true); + sess_ref = true; + switch (function) { case ISCSI_TM_FUNC_ABORT_TASK: tcm_function = TMR_ABORT_TASK; @@ -1931,6 +1934,11 @@ attach: * For connection recovery, this is also the default action for * TMR TASK_REASSIGN. */ + if (sess_ref) { + pr_debug("Handle TMR, using sess_ref=true check\n"); + target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd); + } + iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state); return 0; } |