Messages in this thread | | | Date | Sat, 27 Jun 2020 09:10:56 -0700 | From | Kees Cook <> | Subject | Re: [PATCH] drivers/s390/char/tty3270: Remove function callback casts |
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On Sat, Jun 27, 2020 at 02:54:17PM +0200, Oscar Carter wrote: > In an effort to enable -Wcast-function-type in the top-level Makefile to > support Control Flow Integrity builds, remove all the function callback > casts. > > To do this modify the function prototypes accordingly. > > Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Oh yes, the tasklets! I'd love to see this fixed correctly. (Which is to say, modernize the API.) Romain hasn't had time to continue the work: https://lore.kernel.org/kernel-hardening/20190929163028.9665-1-romain.perier@gmail.com/
Is this something you'd want to tackle?
> --- > drivers/s390/char/tty3270.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c > index 98d7fc152e32..aec996de44d9 100644 > --- a/drivers/s390/char/tty3270.c > +++ b/drivers/s390/char/tty3270.c > @@ -556,8 +556,9 @@ tty3270_scroll_backward(struct kbd_data *kbd) > * Pass input line to tty. > */ > static void > -tty3270_read_tasklet(struct raw3270_request *rrq) > +tty3270_read_tasklet(unsigned long data) > { > + struct raw3270_request *rrq = (struct raw3270_request *)data;
Regardless, this is correct as far as fixing the prototype.
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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