linux-hardening - Re: [PATCH v2 0/2] USB: EHCI: Add register array bounds to HCS ports

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Date:   Wed, 18 Aug 2021 13:49:13 -0400
From:   Alan Stern <stern@...land.harvard.edu>
To:     Kees Cook <keescook@...omium.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Al Cooper <alcooperx@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 0/2] USB: EHCI: Add register array bounds to HCS ports

On Wed, Aug 18, 2021 at 10:30:16AM -0700, Kees Cook wrote:
> Hi,
> 
> This is cleaning up some of the remaining things to be able to apply
> -Warray-bounds and -Wzero-length-bounds globally. Only after doing my
> own version of the port_status patch did I find Arnd's earlier
> patches, including for the weird Broadcom stuff[1].
> 
> No binary differences.
> 
> v2:
> - use 0x80 as base for brcm registers (stern)
> - switch HCS_N_PORTS_MAX to decimal (stern)
> - update various comments (stern)
> v1: https://lore.kernel.org/lkml/20210818043035.1308062-1-keescook@chromium.org
> 
> Thanks!
> 
> -Kees
> 
> [1] https://lore.kernel.org/lkml/20200527134320.869042-1-arnd@arndb.de/#t
> 
> Kees Cook (2):
>   USB: EHCI: Add register array bounds to HCS ports
>   USB: EHCI: Add alias for Broadcom INSNREG
> 
>  drivers/usb/host/ehci-brcm.c | 11 ++++-------
>  include/linux/usb/ehci_def.h | 33 +++++++++++++++++++++------------
>  2 files changed, 25 insertions(+), 19 deletions(-)

For both patches:

Acked-by: Alan Stern <stern@...land.harvard.edu>