linux-kernel - Re: [GIT PULL] USB fixes for 5.9-rc3

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Message-ID: <CAHp75VcyswCWJOV+aMx3rnWwN+3r9HaLvwXCYUJQfo4CHsLowQ@mail.gmail.com>
Date:   Wed, 26 Aug 2020 19:14:05 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Brooke Basile <brookebasile@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        Ilja Van Sprundel <ivansprundel@...ctive.com>,
        Felipe Balbi <balbi@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [GIT PULL] USB fixes for 5.9-rc3

On Wed, Aug 26, 2020 at 7:00 PM Kees Cook <keescook@...omium.org> wrote:
> On Wed, Aug 26, 2020 at 05:33:47PM +0200, Greg KH wrote:
> > On Wed, Aug 26, 2020 at 05:02:38PM +0200, Marek Szyprowski wrote:
> > > On 26.08.2020 15:43, Greg KH wrote:

...

> > Why is slub.c erroring?  How is this related to freeing memory?
>
> I assume this is related to the size calculations in the VLA macros...
> nothing _looks_ wrong with that patch, but obviously something is. :)
> Hmmm

What about the idea I have shared above? (summary: different scope of
two offset variables, and thus outer one is always 0)


-- 
With Best Regards,
Andy Shevchenko