linux-kernel - Re: [PATCH 0/2] pipe: Fixes [ver #2]

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Message-ID: <CABA31DrsaqT-TsOVx=kbRBnuM5He53+=NLgwm94swY-x1UPjuA@mail.gmail.com>
Date:   Sun, 8 Dec 2019 08:45:51 -0800
From:   Akemi Yagi <toracat@...epo.org>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        David Howells <dhowells@...hat.com>, toracat@...epo.org
Subject: Re: [PATCH 0/2] pipe: Fixes [ver #2]

On Sat, Dec 7, 2019 at 1:31 PM Akemi Yagi <toracat@...epo.org> wrote:
>
> On 12/6/19 10:59 AM, Linus Torvalds wrote:
> > Hmm. I think I just saw this same bug with a plain kernel compile.
> >
> > My "make -j32" suddenly came to a crawl, and seems to be entirely
> > single-threaded.
>
> We encountered what seems to be the same problem when building a kernel
> under RHEL 8.
>
> As it turned out, this was due to a bug in make (make-4.2.1-9.el8) and
> a patch is available. Details are found in this Red Hat bugzilla report:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1774790

I forgot to mention that the aforementioned bug in make was originally
reported for Fedora. They now have a patched version of make
(make-4.2.1-15.fc32) in Rawhide.

Akemi