On Thu, Jun 03, 2021 at 04:12:38PM +0300, Leon Romanovsky wrote:
> On Thu, Jun 03, 2021 at 03:39:24PM +0300, Dan Carpenter wrote:
> > Add a check for if the kzalloc() fails.
> >
> > Fixes: 4a98544d1827 ("net/mlx5: Move chains ft pool to be used by all firmware steering")
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> > ---
> > drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c
> > index 526fbb669142..c14590acc772 100644
> > --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c
> > +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c
> > @@ -27,6 +27,8 @@ int mlx5_ft_pool_init(struct mlx5_core_dev *dev)
> > int i;
> >
> > ft_pool = kzalloc(sizeof(*ft_pool), GFP_KERNEL);
> > + if (!ft_pool)
> > + return -ENOMEM;
> >
> > for (i = ARRAY_SIZE(FT_POOLS) - 1; i >= 0; i--)
> > ft_pool->ft_left[i] = FT_SIZE / FT_POOLS[i];
>
>
> Dan thanks for your patch.
>
> When reviewed your patch, I spotted another error in the patch from the Fixes line.
>
> 2955 err = mlx5_ft_pool_init(dev);
> 2956 if (err)
> 2957 return err;
> 2958
> 2959 steering = kzalloc(sizeof(*steering), GFP_KERNEL);
> 2960 if (!steering)
> 2961 goto err;
> ^^^^^^^^ it will return success, while should return ENOMEM.
Smatch prints a static checker warning for this, but I never finished
going through the backlog of old "missing error code" warnings. At one
point I was down to 38 warnings left but now I see that the backlog is
62 warnings so people are adding new bugs faster than I'm reviewing
them... :P
I will take care of this tomorrow as a separate patch. I will just
report or the other 61 warnings and get the backlog cleared out so that
I can start checking these better in the future.
regards,
dan carpenter
