Number of specs is provided by user and in valid case can be equal to zero.
Such argument causes to call to kcalloc() with zero-length request and in
return the ZERO_SIZE_PTR is assigned. This pointer is different from NULL
and makes various if (..) checks to success.
Fixes: b6ba4a9aa59f ("IB/uverbs: Add support for flow counters")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
if (!resources)
return NULL;
+ if (!num_specs)
+ goto out;
+
resources->counters =
kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
resources->collection =
if (!resources->counters || !resources->collection)
goto err;
+out:
resources->max = num_specs;
-
return resources;
err: