From 7f073d011f93e92d4d225526b9ab6b8b0bbd6613 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 3 Jul 2018 15:30:56 +0300 Subject: [PATCH] drm/nouveau/gem: off by one bugs in nouveau_gem_pushbuf_reloc_apply() The bo array has req->nr_buffers elements so the > should be >= so we don't read beyond the end of the array. Fixes: a1606a9596e5 ("drm/nouveau: new gem pushbuf interface, bump to 0.0.16") Signed-off-by: Dan Carpenter Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_gem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 300daee..e6ccafc 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -616,7 +616,7 @@ nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli, struct nouveau_bo *nvbo; uint32_t data; - if (unlikely(r->bo_index > req->nr_buffers)) { + if (unlikely(r->bo_index >= req->nr_buffers)) { NV_PRINTK(err, cli, "reloc bo index invalid\n"); ret = -EINVAL; break; @@ -626,7 +626,7 @@ nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli, if (b->presumed.valid) continue; - if (unlikely(r->reloc_bo_index > req->nr_buffers)) { + if (unlikely(r->reloc_bo_index >= req->nr_buffers)) { NV_PRINTK(err, cli, "reloc container bo index invalid\n"); ret = -EINVAL; break; -- 2.7.4