On Wed, Oct 12, 2016 at 04:26:20PM -0400, Joe Nosay wrote: > Where in the code is the problem? > > On Tue, Oct 11, 2016 at 11:49 PM, <co...@sdf.org> wrote: >
836 vd = malloc(sizeof(struct vdsk_dring), M_DEVBUF, M_NOWAIT); 837 if (vd == NULL) 838 return NULL; 839 assuming this suceeds... 840 size = roundup(nentries * sizeof(struct vd_desc), PAGE_SIZE); 841 842 if (bus_dmamap_create(t, size, 1, size, 0, 843 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &vd->vd_map) != 0) 844 return (NULL); but this fails. Now we return NULL, due to failure. but there's no reference to vd which will allow us to free it later. (I may be misunderstanding what bus_dmamap_create does, but probably not.
