netdev - Re: [REGRESSION] 5.15.88 and onwards no longer return EADDRINUSE from bind

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Date:   Mon, 13 Feb 2023 08:25:34 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Willy Tarreau <w@....eu>
Cc:     Winter <winter@...ter.cafe>, stable@...r.kernel.org,
        regressions@...ts.linux.dev, netdev@...r.kernel.org
Subject: Re: [REGRESSION] 5.15.88 and onwards no longer return EADDRINUSE
 from bind

On Mon, Feb 13, 2023 at 05:27:03AM +0100, Willy Tarreau wrote:
> Hi,
> 
> [CCed netdev]
> 
> On Sun, Feb 12, 2023 at 10:38:40PM -0500, Winter wrote:
> > Hi all,
> > 
> > I'm facing the same issue as
> > https://lore.kernel.org/stable/CAFsF8vL4CGFzWMb38_XviiEgxoKX0GYup=JiUFXUOmagdk9CRg@mail.gmail.com/,
> > but on 5.15. I've bisected it across releases to 5.15.88, and can reproduce
> > on 5.15.93.
> > 
> > However, I cannot seem to find the identified problematic commit in the 5.15
> > branch, so I'm unsure if this is a different issue or not.
> > 
> > There's a few ways to reproduce this issue, but the one I've been using is
> > running libuv's (https://github.com/libuv/libuv) tests, specifically tests
> > 271 and 277.
> 
> >From the linked patch:
> 
>   https://lore.kernel.org/stable/20221228144337.512799851@linuxfoundation.org/

But that commit only ended up in 6.0.y, not 5.15, so how is this an
issue in 5.15.y?

confused,

greg k-h