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

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Message-ID: <CAHp75VepkugjZ4pvdNgxzT4T83ewL1AFtSZZtVq6aL+7=sqskA@mail.gmail.com>
Date:   Wed, 26 Aug 2020 18:53:02 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     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>,
        Kees Cook <keescook@...omium.org>,
        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 6:36 PM Greg KH <gregkh@...uxfoundation.org> wrote:
> On Wed, Aug 26, 2020 at 05:02:38PM +0200, Marek Szyprowski wrote:
> > On 26.08.2020 15:43, Greg KH wrote:

> > > Brooke Basile (2):
> > >        USB: gadget: u_f: add overflow checks to VLA macros
> >
> > Sorry, but the above patch breaks USB Ethernet Gadget operation. It also
> > didn't get the proper testing in linux-next (next-20200826 is the first
> > one with this patch).
> >
> > This is how it explodes on Samsung Exynos (ARM 32bit) based board with
> > g_ether module loaded:

> Odd, for a "normal" descriptor, the logic should have remained the same
> as without this patch.

> Brooke, any ideas?

I have an idea.

Does below fix this?


-- 
With Best Regards,
Andy Shevchenko

View attachment "1.diff" of type "text/x-patch" (1099 bytes)