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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun, 8 Dec 2019 10:10:51 -0800
Message-ID: <CAHk-=wgh9zUy9nbiCgGjtrgw1V9Vk=01Ncju-0iib5Jn-V1arw@mail.gmail.com>
Subject: Re: [RFC PATCH 04/10] pipe: Use head and tail pointers for the ring,
 not cursor and length [ver #2]
To:     Johannes Hirte <johannes.hirte@datenkhaos.de>
Cc:     David Howells <dhowells@redhat.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Nicolas Dichtel <nicolas.dichtel@6wind.com>, raven@themaw.net,
        Christian Brauner <christian@brauner.io>,
        keyrings@vger.kernel.org, linux-usb@vger.kernel.org,
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On Sun, Dec 8, 2019 at 9:56 AM Johannes Hirte
<johannes.hirte@datenkhaos.de> wrote:
>
> whereas with a fresh cloned repo I get:
>
> v5.4-13331-g9455d25f4e3b
>
> I assume the later is right. With this version the bug seems to be
> fixed, regardless of the commit count. Tested with different websites
> and firefox works as expected again.

Ok, good. It was almost certainly the select/poll race fix - Mariusz
Ceier reported a problem with youtube hanging, and confirmed that the
poll/select fix seems to have cleared that one up. I suspect that your
hang on fb and spiegel.de were the same thing.

So I think the pipe code is stable again with current -git. Thanks for
reporting and testing,

             Linus