From 090b740200147839228a019b2ed80d139398e095 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 12 Apr 2019 14:45:12 +0100 Subject: [PATCH] vxge: fix return of a free'd memblock on a failed dma mapping [ Upstream commit 0a2c34f18c94b596562bf3d019fceab998b8b584 ] 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/neterion/vxge/vxge-config.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c index bf4302e..28f7656 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -2365,6 +2365,7 @@ static void *__vxge_hw_blockpool_malloc(struct __vxge_hw_device *devh, u32 size, dma_object->addr))) { vxge_os_dma_free(devh->pdev, memblock, &dma_object->acc_handle); + memblock = NULL; goto exit; } -- 2.7.4