From c73d9e350085a479d787d6d6dff3599fa6952491 Mon Sep 17 00:00:00 2001 From: Bas Nieuwenhuizen Date: Wed, 31 Jan 2018 13:58:55 +0100 Subject: [PATCH] drm/amdgpu: Fix always_valid bos multiple LRU insertions. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit commit a20ee0b1f8b42e2568f3a4408003d22b2dfcc706 upstream. If these bos are evicted and are in the validated list things blow up, so do not put them in there. Notably, that tries to add the bo to the LRU twice, which results in a BUG_ON in ttm_bo.c. While for the bo_list an alternative would be to not allow always valid bos in there, that does not work for the user fence. v2: Fixed whitespace issue pointed out by checkpatch.pl Signed-off-by: Bas Nieuwenhuizen Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c | 6 ++++-- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c index 59089e0..92be7f6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c @@ -233,8 +233,10 @@ void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, for (i = 0; i < list->num_entries; i++) { unsigned priority = list->array[i].priority; - list_add_tail(&list->array[i].tv.head, - &bucket[priority]); + if (!list->array[i].robj->parent) + list_add_tail(&list->array[i].tv.head, + &bucket[priority]); + list->array[i].user_pages = NULL; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index b5aa8e6..5f892ad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -522,7 +522,7 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, INIT_LIST_HEAD(&duplicates); amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd); - if (p->uf_entry.robj) + if (p->uf_entry.robj && !p->uf_entry.robj->parent) list_add(&p->uf_entry.tv.head, &p->validated); if (need_mmap_lock) -- 2.7.4