[PATCH-v2 0/4] target: Close se_node_acl lookup race

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>

Hi folks,

This -v2 series addresses a long standing race between
fabric driver se_node_acl lookup + pointer dereference
during session login, and when kref_get() of ->acl_kref
actually happens within __transport_register_session()
code. 

Also as reported earlier by HCH, go ahead and convert
core_tpg_set_initiator_node_queue_depth() to use proper
se_node_acl->se_acl_list -> se_session dereference,
following how core_tpg_del_initiator_node_acl() works
for invoking explicit session shutdown.

Please review,

--nab

-v2 changes:
  - Have tcm_fc/ib_srpt conversion preceed other changes
  - Fix demo-mode acl regression with generate_node_acls=1
  - Fix set_initiator_node_queue_depth session reference
    usage.
  - Add ib_srpt hack to avoid potential user-space
    backwards-compat issue.

Nicholas Bellinger (4):
  tcm_fc: Convert acl lookup to modern get_initiator_node_acl usage
  ib_srpt: Convert acl lookup to modern get_initiator_node_acl usage
  target: Fix change depth se_session reference usage
  target: Obtain se_node_acl->acl_kref during get_initiator_node_acl

 drivers/infiniband/ulp/srpt/ib_srpt.c        |  95 +++++-----------
 drivers/infiniband/ulp/srpt/ib_srpt.h        |   2 -
 drivers/target/iscsi/iscsi_target_configfs.c |  14 ++-
 drivers/target/iscsi/iscsi_target_tpg.c      |  10 --
 drivers/target/iscsi/iscsi_target_tpg.h      |   2 -
 drivers/target/target_core_tpg.c             | 161 +++++++++++----------------
 drivers/target/target_core_transport.c       |  22 ++--
 drivers/target/tcm_fc/tfc_conf.c             |  26 ++---
 drivers/target/tcm_fc/tfc_sess.c             |  18 +--
 include/target/target_core_fabric.h          |   4 +-
 10 files changed, 137 insertions(+), 217 deletions(-)

-- 
1.9.1