linux-kernel - RE: [PATCH net] hvsock: fix epollout hang from race condition

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Message-ID: <MW2PR2101MB111697FDA0BEDA81237FECB3C0EB0@MW2PR2101MB1116.namprd21.prod.outlook.com>
Date:   Mon, 17 Jun 2019 18:47:08 +0000
From:   Sunil Muthuswamy <sunilmut@...rosoft.com>
To:     David Miller <davem@...emloft.net>,
        Dexuan Cui <decui@...rosoft.com>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "sashal@...nel.org" <sashal@...nel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net] hvsock: fix epollout hang from race condition



> -----Original Message-----
> From: linux-hyperv-owner@...r.kernel.org <linux-hyperv-owner@...r.kernel.org> On Behalf Of David Miller
> Sent: Sunday, June 16, 2019 1:55 PM
> To: Dexuan Cui <decui@...rosoft.com>
> Cc: Sunil Muthuswamy <sunilmut@...rosoft.com>; KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang <haiyangz@...rosoft.com>;
> Stephen Hemminger <sthemmin@...rosoft.com>; sashal@...nel.org; Michael Kelley <mikelley@...rosoft.com>;
> netdev@...r.kernel.org; linux-hyperv@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH net] hvsock: fix epollout hang from race condition
> 
> From: Dexuan Cui <decui@...rosoft.com>
> Date: Sat, 15 Jun 2019 03:22:32 +0000
> 
> > These warnings are not introduced by this patch from Sunil.
> >
> > I'm not sure why I didn't notice these warnings before.
> > Probably my gcc version is not new eought?
> >
> > Actually these warnings are bogus, as I checked the related functions,
> > which may confuse the compiler's static analysis.
> >
> > I'm going to make a patch to initialize the pointers to NULL to suppress
> > the warnings. My patch will be based on the latest's net.git + this patch
> > from Sunil.
> 
> Sunil should then resubmit his patch against something that has the
> warning suppression patch applied.

David, Dexuan's patch to suppress the warnings seems to be applied now
to the 'net' branch. Can we please get this patch applied as well?