diff options
| author | Mike Christie <michael.christie@oracle.com> | 2021-06-09 14:27:09 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-06-09 23:06:57 -0400 |
| commit | d1f2ce77638d681c1e34d597e432a3b28ce15c78 (patch) | |
| tree | 7e15b3c4c1f9c5bafeddf9046489b77f0593d256 /drivers/scsi/qedi/qedi_iscsi.c | |
| parent | 2938bedd0efa0964db563999b9b3b866b2d1a090 (diff) | |
scsi: qedi: Fix host removal with running sessions
qedi_clear_session_ctx() could race with the in-kernel or userspace driven
recovery/removal and we could access a NULL conn or do a double free.
We should be using iscsi_host_remove() to start the removal process from
the driver. It will start the in-kernel recovery and notify userspace that
the driver's scsi_hosts are being removed. iscsid will then drive the
session removal like is done when the logout command is run. When the
sessions are removed, iscsi_host_remove() will return so qedi can finish
knowing there are no running sessions and no new sessions will be allowed.
This also fixes an issue where we check for a NULL conn after already
accessing it introduced in commit 27e986289e73 ("scsi: iscsi: Drop suspend
calls from ep_disconnect") by just removing the function completely.
Link: https://lore.kernel.org/r/20210609192709.5094-1-michael.christie@oracle.com
Fixes: 27e986289e73 ("scsi: iscsi: Drop suspend calls from ep_disconnect")
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qedi/qedi_iscsi.c')
| -rw-r--r-- | drivers/scsi/qedi/qedi_iscsi.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index bf581ecea897..97f83760da88 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -1659,23 +1659,6 @@ void qedi_process_iscsi_error(struct qedi_endpoint *ep, qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); } -void qedi_clear_session_ctx(struct iscsi_cls_session *cls_sess) -{ - struct iscsi_session *session = cls_sess->dd_data; - struct iscsi_conn *conn = session->leadconn; - struct qedi_conn *qedi_conn = conn->dd_data; - - if (iscsi_is_session_online(cls_sess)) { - if (conn) - iscsi_suspend_queue(conn); - qedi_ep_disconnect(qedi_conn->iscsi_ep); - } - - qedi_conn_destroy(qedi_conn->cls_conn); - - qedi_session_destroy(cls_sess); -} - void qedi_process_tcp_error(struct qedi_endpoint *ep, struct iscsi_eqe_data *data) { |