[PATCH rdma-next v4 0/8] Fix memory corruption in CM

[Leon Romanovsky]

From: Leon Romanovsky <leonro@xxxxxxxxxx>

Changelog:
v4:
 * Added comment near cm_destroy_av()
 * Changed "unregistration lock" to be "mad_agent_lock" in the comment
 * Removed unclear comment
v3: https://lore.kernel.org/lkml/cover.1620720467.git.leonro@xxxxxxxxxx
 * Removed double unlock
 * Changes in cma_release flow
v2: https://lore.kernel.org/lkml/cover.1619004798.git.leonro@xxxxxxxxxx
 * Included Jason's patches in this series
v1: https://lore.kernel.org/linux-rdma/20210411122152.59274-1-leon@xxxxxxxxxx
 * Squashed "remove mad_agent ..." patches to make sure that we don't
   need to check for the NULL argument.
v0: https://lore.kernel.org/lkml/20210318100309.670344-1-leon@xxxxxxxxxx

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Hi,

This series from Mark fixes long standing bug in CM migration logic,
reported by Ryan [1].

Thanks

[1] https://lore.kernel.org/linux-rdma/CAFMmRNx9cg--NUnZjFM8yWqFaEtsmAWV4EogKb3a0+hnjdtJFA@xxxxxxxxxxxxxx/

Jason Gunthorpe (4):
  IB/cm: Pair cm_alloc_response_msg() with a cm_free_response_msg()
  IB/cm: Split cm_alloc_msg()
  IB/cm: Call the correct message free functions in cm_send_handler()
  IB/cm: Tidy remaining cm_msg free paths

Mark Zhang (4):
  Revert "IB/cm: Mark stale CM id's whenever the mad agent was
    unregistered"
  IB/cm: Simplify ib_cancel_mad() and ib_modify_mad() calls
  IB/cm: Improve the calling of cm_init_av_for_lap and
    cm_init_av_by_path
  IB/cm: Protect cm_dev, cm_ports and mad_agent with kref and lock

 drivers/infiniband/core/cm.c       | 621 +++++++++++++++--------------
 drivers/infiniband/core/mad.c      |  17 +-
 drivers/infiniband/core/sa_query.c |   4 +-
 include/rdma/ib_mad.h              |  27 +-
 4 files changed, 346 insertions(+), 323 deletions(-)

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2.31.1