staging: netlogic: Return zero pointer after failed kmalloc
Return a ZERO_SIZE_PTR in the xlr_config_spill function if the
kmalloc returns an invalid value. This change prevents a possible
segmentation fault as the invalid pointer is fed into PTR_ALIGN macro.
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/netlogic/xlr_net.c b/drivers/staging/netlogic/xlr_net.c
index 98e74d7..0015847 100644
--- a/drivers/staging/netlogic/xlr_net.c
+++ b/drivers/staging/netlogic/xlr_net.c
@@ -437,8 +437,10 @@
base = priv->base_addr;
spill_size = size;
spill = kmalloc(spill_size + SMP_CACHE_BYTES, GFP_ATOMIC);
- if (!spill)
+ if (!spill) {
pr_err("Unable to allocate memory for spill area!\n");
+ return ZERO_SIZE_PTR;
+ }
spill = PTR_ALIGN(spill, SMP_CACHE_BYTES);
phys_addr = virt_to_phys(spill);