On Fri, Jul 06, 2018 at 10:51:30AM -0700, Matthew Wilcox wrote:
> On Fri, Jul 06, 2018 at 08:21:01PM +0300, Dan Carpenter wrote:
> > We need to unlock on this error path.
> >
> > Fixes: 29a6bfc32eb2 ("xarray: Track free entries in an XArray")
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> > ---
> >
> > There "UINT_MAX + 1" is an integer overflow and is equal to zero but I
> > don't know what was intended there.
>
> Ah. I didn't realise UINT_MAX was defined as ~0U. I had intended
> UINT_MAX + 1UL. ie 0x10000000UL on 64-bit and 0 on 32-bit.
>
I will push a Smatch check so that the wrap around on 32 bit systems
will generate a warning.
regards,
dan carpenter
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