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Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

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Pull SCSI target fixes from Nicholas Bellinger:
 "This series is larger than what I'd normally be conformable with
  sending for a -rc5 PULL request..

  However, the bulk of the series is localized to qla2xxx target
  specific fixes that address a number of real-world correctness issues,
  that have been outstanding on the list for ~6 weeks now.  They where
  submitted + verified + acked by the HW LLD vendor, contributed by a
  major production customer of the code, and are marked for v3.18.y
  stable code.

  That said, I don't see a good reason to wait another month to get
  these fixes into mainline.

  Beyond the qla2xx specific fixes, this series also includes:

   - bugfix for a long standing use-after-free in iscsi-target during
     TPG shutdown + demo-mode sessions.

   - bugfix for a >= v4.0 regression OOPs in iscsi-target during a
     iscsi_start_kthreads() failure.

   - bugfix for a >= v4.0 regression hang in iscsi-target for iser
     explicit session/connection logout.

   - bugfix for a iser-target bug where a early CMA REJECTED status
     during login triggers a NULL pointer dereference OOPs.

   - bugfixes for a handful of v4.2-rc1 specific regressions related to
     the larger set of recent backend configfs attribute changes.

  A big thanks to QLogic + Pure Storage for the qla2xxx target bugfixes"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits)
  Documentation/target: Fix tcm_mod_builder.py build breakage
  iser-target: Fix REJECT CM event use-after-free OOPs
  iscsi-target: Fix iser explicit logout TX kthread leak
  iscsi-target: Fix iscsit_start_kthreads failure OOPs
  iscsi-target: Fix use-after-free during TPG session shutdown
  qla2xxx: terminate exchange when command is aborted by LIO
  qla2xxx: drop cmds/tmrs arrived while session is being deleted
  qla2xxx: disable scsi_transport_fc registration in target mode
  qla2xxx: added sess generations to detect RSCN update races
  qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives
  qla2xxx: delay plogi/prli ack until existing sessions are deleted
  qla2xxx: cleanup cmd in qla workqueue before processing TMR
  qla2xxx: kill sessions/log out initiator on RSCN and port down events
  qla2xxx: fix command initialization in target mode.
  qla2xxx: Remove msleep in qlt_send_term_exchange
  qla2xxx: adjust debug flags
  qla2xxx: release request queue reservation.
  qla2xxx: Add flush after updating ATIOQ consumer index.
  qla2xxx: Enable target mode for ISP27XX
  qla2xxx: Fix hardware lock/unlock issue causing kernel panic.
  ...
This commit is contained in:
Linus Torvalds 2015-07-29 09:54:40 -07:00
commit 733db573a6
22 changed files with 1105 additions and 220 deletions
Download patch file Download diff file Expand all files Collapse all files

16
drivers/infiniband/ulp/isert/ib_isert.c
View file

@ -775,6 +775,17 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
ret = isert_rdma_post_recvl(isert_conn);
if (ret)
goto out_conn_dev;
/*
* Obtain the second reference now before isert_rdma_accept() to
* ensure that any initiator generated REJECT CM event that occurs
* asynchronously won't drop the last reference until the error path
* in iscsi_target_login_sess_out() does it's ->iscsit_free_conn() ->
* isert_free_conn() -> isert_put_conn() -> kref_put().
*/
if (!kref_get_unless_zero(&isert_conn->kref)) {
isert_warn("conn %p connect_release is running\n", isert_conn);
goto out_conn_dev;
}
ret = isert_rdma_accept(isert_conn);
if (ret)
@ -836,11 +847,6 @@ isert_connected_handler(struct rdma_cm_id *cma_id)
isert_info("conn %p\n", isert_conn);
if (!kref_get_unless_zero(&isert_conn->kref)) {
isert_warn("conn %p connect_release is running\n", isert_conn);
return;
}
mutex_lock(&isert_conn->mutex);
if (isert_conn->state != ISER_CONN_FULL_FEATURE)
isert_conn->state = ISER_CONN_UP;