linux-kernel - Re: [PATCH rdma-next v4 0/8] Fix memory corruption in CM

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Date:   Wed, 2 Jun 2021 16:00:35 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>,
        Leon Romanovsky <leonro@...dia.com>,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Mark Zhang <markzhang@...dia.com>,
        Roland Dreier <rolandd@...co.com>,
        Sean Hefty <sean.hefty@...el.com>
Subject: Re: [PATCH rdma-next v4 0/8] Fix memory corruption in CM

On Wed, Jun 02, 2021 at 01:27:00PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@...dia.com>
> 
> 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@nvidia.com
>  * Removed double unlock
>  * Changes in cma_release flow
> v2: https://lore.kernel.org/lkml/cover.1619004798.git.leonro@nvidia.com
>  * Included Jason's patches in this series
> v1: https://lore.kernel.org/linux-rdma/20210411122152.59274-1-leon@kernel.org
>  * 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@kernel.org
> 
> -------------------------------------------------------------------------------
> 
> 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@mail.gmail.com/
> 
> 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

Applied to for-next, thanks

Jason