From: Laura Garcia Liebana Date: Thu, 18 Feb 2016 17:38:42 +0000 (+0100) Subject: staging: netlogic: Return zero pointer after failed kmalloc X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=11b49d9bb63fab2f92223419a2492661e317e2ef;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/netlogic/xlr_net.c b/drivers/staging/netlogic/xlr_net.c index 98e74d777e09..00158471a7f6 100644 --- a/drivers/staging/netlogic/xlr_net.c +++ b/drivers/staging/netlogic/xlr_net.c @@ -437,8 +437,10 @@ static void *xlr_config_spill(struct xlr_net_priv *priv, int reg_start_0, 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);