[PATCH] clk: sifive: allocate sufficient memory for struct __prci_data

[Stephen Boyd]

Quoting Palmer Dabbelt (2020-06-25 15:13:39)
> On Mon, 22 Jun 2020 18:24:17 PDT (-0700), vincent.chen at sifive.com wrote:
> > The (struct __prci_data).hw_clks.hws is an array with dynamic elements.
> > Using struct_size(pd, hw_clks.hws, ARRAY_SIZE(__prci_init_clocks))
> > instead of sizeof(*pd) to get the correct memory size of
> > struct __prci_data for sifive/fu540-prci. After applying this
> > modifications, the kernel runs smoothly with CONFIG_SLAB_FREELIST_RANDOM
> > enabled on the HiFive unleashed board.
> >
> > Fixes: 30b8e27e3b58 ("clk: sifive: add a driver for the SiFive FU540 PRCI IP block")
> > Cc: stable at vger.kernel.org
> > Signed-off-by: Vincent Chen <vincent.chen at sifive.com>
> > ---
> >  drivers/clk/sifive/fu540-prci.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c
> > index 6282ee2f361c..a8901f90a61a 100644
> > --- a/drivers/clk/sifive/fu540-prci.c
> > +++ b/drivers/clk/sifive/fu540-prci.c
> > @@ -586,7 +586,10 @@ static int sifive_fu540_prci_probe(struct platform_device *pdev)
> >       struct __prci_data *pd;
> >       int r;
> >
> > -     pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
> > +     pd = devm_kzalloc(dev,
> > +                       struct_size(pd, hw_clks.hws,
> > +                                   ARRAY_SIZE(__prci_init_clocks)),
> > +                       GFP_KERNEL);
> >       if (!pd)
> >               return -ENOMEM;
> 
> This is on fixes, thanks!

Does that mean applied to sifive tree? I see it in next but only noticed
this by chance because it wasn't sent to the linux-clk mailing list.