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From: "Marciniszyn, Mike" <mike.marciniszyn@intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Ismail, Mustafa" <mustafa.ismail@intel.com>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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        Yevgeny Kliteynik <kliteyn@mellanox.com>,
        Tziporet Koren <tziporet@mellanox.com>,
        Alex Polak <alexpo@mellanox.com>, Boris Pismenny <borisp@mellanox.com>,
        Leon Romanovsky <leon@kernel.org>, Doug Ledford <dledford@redhat.com>
Subject: RE: [PATCH 4.4 29/57] RDMA/uverbs: Check port number supplied by
 user verbs cmds
Thread-Topic: [PATCH 4.4 29/57] RDMA/uverbs: Check port number supplied by
 user verbs cmds
Thread-Index: AQHS++9L/iTyRkuxdUiZieB8x0MiOqJR55OQgAB/PACABeNqMA==
Date: Mon, 17 Jul 2017 17:30:45 +0000
Message-ID: <32E1700B9017364D9B60AED9960492BC34341BF7@fmsmsx120.amr.corp.intel.com>
References: <20170713153957.515045341@linuxfoundation.org>
 <20170713153959.566717957@linuxfoundation.org>
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> Subject: Re: [PATCH 4.4 29/57] RDMA/uverbs: Check port number supplied
> by user verbs cmds
> 
> On Thu, Jul 13, 2017 at 03:54:28PM +0000, Ismail, Mustafa wrote:
> > > Subject: [PATCH 4.4 29/57] RDMA/uverbs: Check port number supplied
> by
> > > user verbs cmds
> > >
> > > 4.4-stable review patch.  If anyone has any objections, please let me
> know.
> >
> > Yes, this breaks modify qp.
> > See https://patchwork.kernel.org/patch/9830663/
> 
> I don't understand this response at all, sorry.
> 
> What should I do about this?  Is this patch alone a problem?  Is there
> some other patch I should apply that is in Linus's tree?  Where is the
> problem, only in this old release?
> 
> totally confused,
> 

This patch utterly breaks qib and hfi1 on at least 4.10.11 stable kernel.

I suspect and will soon verify that v4.13-rc1 is broke as well.

Mike