3.16.72-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Colin Ian King colin.king@canonical.com
commit 0a2c34f18c94b596562bf3d019fceab998b8b584 upstream.
Currently if a pci dma mapping failure is detected a free'd memblock address is returned rather than a NULL (that indicates an error). Fix this by ensuring NULL is returned on this error case.
Addresses-Coverity: ("Use after free") Fixes: 528f727279ae ("vxge: code cleanup and reorganization") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: David S. Miller davem@davemloft.net [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/net/ethernet/neterion/vxge/vxge-config.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -2381,6 +2381,7 @@ static void *__vxge_hw_blockpool_malloc( vxge_os_dma_free(devh->pdev, memblock, &dma_object->acc_handle); status = VXGE_HW_ERR_OUT_OF_MEMORY; + memblock = NULL; goto exit; }