netdev - Re: TCP connection/socket gets stuck - Customer requests are dropped with SocketTimeoutException

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Message-ID: <CADVnQykpRGLzri3nDu9dJmXNUBqz-Q0YsqY-B_r4Pj0VOg44ZA@mail.gmail.com>
Date: Wed, 10 Sep 2025 09:58:24 -0400
From: Neal Cardwell <ncardwell@...gle.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: Ramakant Badolia <Ramakant.Badolia@...tom.com>, "kuniyu@...gle.com" <kuniyu@...gle.com>, 
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, Ozan Sengul <Ozan.Sengul@...tom.com>, 
	Raja Sekhar Pula Venkata <RAJASEKHAR.PULAVENKATA@...tom.com>, 
	Jean-Christophe Duberga <Jean-Christophe.Duberga@...tom.com>
Subject: Re: TCP connection/socket gets stuck - Customer requests are dropped
 with SocketTimeoutException

On Wed, Sep 10, 2025 at 6:16 AM Eric Dumazet <edumazet@...gle.com> wrote:
>
> On Wed, Sep 10, 2025 at 1:49 AM Ramakant Badolia
> <Ramakant.Badolia@...tom.com> wrote:
> >
> > Hi Linux TCP Maintainers,
> >
> > I am writing to get insight on this bug report - https://bugzilla.kernel.org/show_bug.cgi?id=219221
> > Unfortunately, we at TomTom have also been stuck with this issue for the last two months and our customer requests are getting dropped intermittently several times a day.
> >
> > Currently we are using Linux version 5.14.0-570.37.1.el9_6.x86_64 which is causing this issue.
> >
> > As reported in https://bugzilla.kernel.org/show_bug.cgi?id=219221, we don't have possibility to rollback to previous working version.
> >
> > I want to check if you acknowledged this bug and what solution was provided? Which version should we switch to in order to have this fixed?
> >
>
> No idea. This might be a question for Redhat support ?
>
> I do not think you shared a pcap with us ?

Looks like the bug report at
https://bugzilla.kernel.org/show_bug.cgi?id=219221 posted a working
and non-working ("not working TCP connection PCAP file"
non-working_tcp_packets.pcap) pcap file, though there was only a text
update for the working case.

neal