From 0d5a03c3d9254813ca76d7886ff9ed76a0aea545 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 8 May 2018 20:39:47 +1000 Subject: [PATCH] drm/nouveau/ttm: don't dereference nvbo::cli, it can outlive client Potentially responsible for some random OOPSes. Signed-off-by: Ben Skeggs Cc: stable@vger.kernel.org [v4.15+] --- drivers/gpu/drm/nouveau/nouveau_bo.c | 1 - drivers/gpu/drm/nouveau/nouveau_bo.h | 2 -- drivers/gpu/drm/nouveau/nouveau_ttm.c | 6 +++--- 3 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 6f402c4f2bdd..ab61c038f42c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -214,7 +214,6 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, INIT_LIST_HEAD(&nvbo->entry); INIT_LIST_HEAD(&nvbo->vma_list); nvbo->bo.bdev = &drm->ttm.bdev; - nvbo->cli = cli; /* This is confusing, and doesn't actually mean we want an uncached * mapping, but is what NOUVEAU_GEM_DOMAIN_COHERENT gets translated diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h index be8e00b49cde..73c48440d4d7 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.h +++ b/drivers/gpu/drm/nouveau/nouveau_bo.h @@ -26,8 +26,6 @@ struct nouveau_bo { struct list_head vma_list; - struct nouveau_cli *cli; - unsigned contig:1; unsigned page:5; unsigned kind:8; diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index dff51a0ee028..8c093ca4222e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -63,7 +63,7 @@ nouveau_vram_manager_new(struct ttm_mem_type_manager *man, struct ttm_mem_reg *reg) { struct nouveau_bo *nvbo = nouveau_bo(bo); - struct nouveau_drm *drm = nvbo->cli->drm; + struct nouveau_drm *drm = nouveau_bdev(bo->bdev); struct nouveau_mem *mem; int ret; @@ -103,7 +103,7 @@ nouveau_gart_manager_new(struct ttm_mem_type_manager *man, struct ttm_mem_reg *reg) { struct nouveau_bo *nvbo = nouveau_bo(bo); - struct nouveau_drm *drm = nvbo->cli->drm; + struct nouveau_drm *drm = nouveau_bdev(bo->bdev); struct nouveau_mem *mem; int ret; @@ -131,7 +131,7 @@ nv04_gart_manager_new(struct ttm_mem_type_manager *man, struct ttm_mem_reg *reg) { struct nouveau_bo *nvbo = nouveau_bo(bo); - struct nouveau_drm *drm = nvbo->cli->drm; + struct nouveau_drm *drm = nouveau_bdev(bo->bdev); struct nouveau_mem *mem; int ret; -- 2.34.1