3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jail...@wanadoo.fr>


[ Upstream commit 18eb86362a52f0af933cc0fd5e37027317eb2d1c ]

Check memory allocation failures and return -ENOMEM in such cases, as
already done for other memory allocations in this function.

This avoids NULL pointers dereference.

Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
Tested-by: Aaron Brown <aaron.f.br...@intel.com
Acked-by: PJ Waskiewicz <peter.waskiewicz...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/intel/igb/igb_main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -3001,6 +3001,8 @@ static int igb_sw_init(struct igb_adapte
        /* Setup and initialize a copy of the hw vlan table array */
        adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32),
                                       GFP_ATOMIC);
+       if (!adapter->shadow_vfta)
+               return -ENOMEM;
 
        /* This call may decrease the number of queues */
        if (igb_init_interrupt_scheme(adapter, true)) {


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