Re: [PATCH RESEND] sh: sq: Use the bitmap API when applicable

From: Dan Carpenter
Date: Wed Apr 19 2023 - 00:48:21 EST


On Tue, Apr 18, 2023 at 12:39:43PM +0300, Dan Carpenter wrote:
> On Tue, Apr 18, 2023 at 10:30:01AM +0300, Dan Carpenter wrote:
> > I have some unpublished Smatch stuff which tries to track "variable x
> > is in terms of bit units or byte units etc." I will try to make a
> > static checker rule for this.
>
> Attached. It prints a warning like this:
>
> drivers/net/ethernet/broadcom/cnic.c:667 cnic_init_id_tbl() warn: allocating units of longs instead of bytes 'test_var'
>
> I'll test it out tonight.

It didn't find any bugs. (Which is hardly surprising because most would
be caught in testing). No false postives either. I imagine that people
will introduce bugs like this in the future and now we'll see it when
that happens.

regards,
dan carpenter