linux-kernel - Re: aarch64 5.15.68 regression in topology/thread

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Message-ID: <Yy2uZvsbKStqBKnF@lorien.usersys.redhat.com>
Date:   Fri, 23 Sep 2022 09:02:30 -0400
From:   Phil Auld <pauld@...hat.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Petr Štetiar <ynezz@...e.cz>,
        linux-kernel@...r.kernel.org, yury.norov@...il.com,
        rafael@...nel.org
Subject: Re: aarch64 5.15.68 regression in topology/thread_siblings (huge
 file size and no content)

On Fri, Sep 23, 2022 at 11:16:55AM +0200 Greg Kroah-Hartman wrote:
> On Thu, Sep 22, 2022 at 10:05:06PM +0200, Petr Štetiar wrote:
> > Phil Auld <pauld@...hat.com> [2022-09-22 13:18:12]:
> > 
> > > Then I applied the fix and the problem went away:
> > 
> > I've just tried the same aarch64 and I can confirm, that the
> > patch fixes the issue.
> 
> Wow, that's odd that the file size matters here.
>

Yeah, I looked through the code some but nothing jumped out where
that unsigned -1 could cause a problem (like count + 1 wrapping
to 0 or something).

> Ok, I'll send this to Linus in a few hours, thanks.

Thanks!


Cheers,
Phil

> 
> greg k-h
> 

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