drm/radeon: Use drm_calloc_ab for CS relocs

The number of relocs is passed in by userspace and can be large. It has
been observed to cause kcalloc failures in the wild.

Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 4d0f96c..ab39b85 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -88,7 +88,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
        p->dma_reloc_idx = 0;
        /* FIXME: we assume that each relocs use 4 dwords */
        p->nrelocs = chunk->length_dw / 4;
-       p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_bo_list), GFP_KERNEL);
+       p->relocs = drm_calloc_large(p->nrelocs, sizeof(struct radeon_bo_list));
        if (p->relocs == NULL) {
                return -ENOMEM;
        }
@@ -428,7 +428,7 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bo
                }
        }
        kfree(parser->track);
-       kfree(parser->relocs);
+       drm_free_large(parser->relocs);
        drm_free_large(parser->vm_bos);
        for (i = 0; i < parser->nchunks; i++)
                drm_free_large(parser->chunks[i].kdata);