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Date: Fri, 15 Nov 2019 14:16:10 +0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Kees Cook <keescook@...omium.org>
Cc: Larry Finger <Larry.Finger@...inger.net>,
Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
Romain Perier <romain.perier@...il.com>
Subject: Re: [PATCH] staging: rtl*: Remove tasklet callback casts
On Thu, Nov 14, 2019 at 09:39:00PM -0800, Kees Cook wrote:
> In order to make the entire kernel usable under Clang's Control Flow
> Integrity protections, function prototype casts need to be avoided
> because this will trip CFI checks at runtime (i.e. a mismatch between
> the caller's expected function prototype and the destination function's
> prototype). Many of these cases can be found with -Wcast-function-type,
> which found that the rtl wifi drivers had a bunch of needless function
> casts. Remove function casts for tasklet callbacks in the various drivers.
>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
> drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c | 3 +--
> drivers/staging/rtl8188eu/hal/rtl8188eu_xmit.c | 3 +--
> drivers/staging/rtl8188eu/include/rtl8188e_recv.h | 2 +-
> drivers/staging/rtl8188eu/include/rtl8188e_xmit.h | 2 +-
> drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c | 4 ++--
> drivers/staging/rtl8192e/rtllib_softmac.c | 7 +++----
> .../staging/rtl8192u/ieee80211/ieee80211_softmac.c | 7 +++----
> drivers/staging/rtl8192u/r8192U_core.c | 8 ++++----
> drivers/staging/rtl8712/rtl8712_recv.c | 11 +++++------
> drivers/staging/rtl8712/rtl871x_xmit.c | 5 ++---
> drivers/staging/rtl8712/rtl871x_xmit.h | 2 +-
> drivers/staging/rtl8712/usb_ops_linux.c | 4 ++--
> drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c | 11 ++++-------
> 13 files changed, 30 insertions(+), 39 deletions(-)
This fails to apply to my staging-next branch of staging.git. Can you
rebase and resend?
thanks,
greg k-h
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