From f7652afa8eadb416b23eb57dec6f158529942041 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Mon, 27 Mar 2017 11:09:08 +0200 Subject: [PATCH 01/14] drm/vmwgfx: Type-check lookups of fence objects A malicious caller could otherwise hand over handles to other objects causing all sorts of interesting problems. Testing done: Ran a Fedora 25 desktop using both Xorg and gnome-shell/Wayland. Cc: Signed-off-by: Thomas Hellstrom Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 75 +++++++++++++++++---------- 1 file changed, 49 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c index 6541dd8b82dc..4076063e0fdd 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c @@ -538,7 +538,7 @@ int vmw_fence_create(struct vmw_fence_manager *fman, struct vmw_fence_obj **p_fence) { struct vmw_fence_obj *fence; - int ret; + int ret; fence = kzalloc(sizeof(*fence), GFP_KERNEL); if (unlikely(fence == NULL)) @@ -701,6 +701,41 @@ void vmw_fence_fifo_up(struct vmw_fence_manager *fman) } +/** + * vmw_fence_obj_lookup - Look up a user-space fence object + * + * @tfile: A struct ttm_object_file identifying the caller. + * @handle: A handle identifying the fence object. + * @return: A struct vmw_user_fence base ttm object on success or + * an error pointer on failure. + * + * The fence object is looked up and type-checked. The caller needs + * to have opened the fence object first, but since that happens on + * creation and fence objects aren't shareable, that's not an + * issue currently. + */ +static struct ttm_base_object * +vmw_fence_obj_lookup(struct ttm_object_file *tfile, u32 handle) +{ + struct ttm_base_object *base = ttm_base_object_lookup(tfile, handle); + + if (!base) { + pr_err("Invalid fence object handle 0x%08lx.\n", + (unsigned long)handle); + return ERR_PTR(-EINVAL); + } + + if (base->refcount_release != vmw_user_fence_base_release) { + pr_err("Invalid fence object handle 0x%08lx.\n", + (unsigned long)handle); + ttm_base_object_unref(&base); + return ERR_PTR(-EINVAL); + } + + return base; +} + + int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { @@ -726,13 +761,9 @@ int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, arg->kernel_cookie = jiffies + wait_timeout; } - base = ttm_base_object_lookup(tfile, arg->handle); - if (unlikely(base == NULL)) { - printk(KERN_ERR "Wait invalid fence object handle " - "0x%08lx.\n", - (unsigned long)arg->handle); - return -EINVAL; - } + base = vmw_fence_obj_lookup(tfile, arg->handle); + if (IS_ERR(base)) + return PTR_ERR(base); fence = &(container_of(base, struct vmw_user_fence, base)->fence); @@ -771,13 +802,9 @@ int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; struct vmw_private *dev_priv = vmw_priv(dev); - base = ttm_base_object_lookup(tfile, arg->handle); - if (unlikely(base == NULL)) { - printk(KERN_ERR "Fence signaled invalid fence object handle " - "0x%08lx.\n", - (unsigned long)arg->handle); - return -EINVAL; - } + base = vmw_fence_obj_lookup(tfile, arg->handle); + if (IS_ERR(base)) + return PTR_ERR(base); fence = &(container_of(base, struct vmw_user_fence, base)->fence); fman = fman_from_fence(fence); @@ -1024,6 +1051,7 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, (struct drm_vmw_fence_event_arg *) data; struct vmw_fence_obj *fence = NULL; struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); + struct ttm_object_file *tfile = vmw_fp->tfile; struct drm_vmw_fence_rep __user *user_fence_rep = (struct drm_vmw_fence_rep __user *)(unsigned long) arg->fence_rep; @@ -1037,15 +1065,11 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, */ if (arg->handle) { struct ttm_base_object *base = - ttm_base_object_lookup_for_ref(dev_priv->tdev, - arg->handle); + vmw_fence_obj_lookup(tfile, arg->handle); + + if (IS_ERR(base)) + return PTR_ERR(base); - if (unlikely(base == NULL)) { - DRM_ERROR("Fence event invalid fence object handle " - "0x%08lx.\n", - (unsigned long)arg->handle); - return -EINVAL; - } fence = &(container_of(base, struct vmw_user_fence, base)->fence); (void) vmw_fence_obj_reference(fence); @@ -1053,7 +1077,7 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, if (user_fence_rep != NULL) { bool existed; - ret = ttm_ref_object_add(vmw_fp->tfile, base, + ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, &existed); if (unlikely(ret != 0)) { DRM_ERROR("Failed to reference a fence " @@ -1097,8 +1121,7 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, return 0; out_no_create: if (user_fence_rep != NULL) - ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, - handle, TTM_REF_USAGE); + ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE); out_no_ref_obj: vmw_fence_obj_unreference(&fence); return ret; From 36274ab8c596f1240c606bb514da329add2a1bcd Mon Sep 17 00:00:00 2001 From: Murray McAllister Date: Mon, 27 Mar 2017 11:12:53 +0200 Subject: [PATCH 02/14] drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl() Before memory allocations vmw_surface_define_ioctl() checks the upper-bounds of a user-supplied size, but does not check if the supplied size is 0. Add check to avoid NULL pointer dereferences. Cc: Signed-off-by: Murray McAllister Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c index b445ce9b9757..f410502cb075 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c @@ -716,8 +716,8 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data, for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) num_sizes += req->mip_levels[i]; - if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * - DRM_VMW_MAX_MIP_LEVELS) + if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS || + num_sizes == 0) return -EINVAL; size = vmw_user_surface_size + 128 + From 63774069d9527a1aeaa4aa20e929ef5e8e9ecc38 Mon Sep 17 00:00:00 2001 From: Murray McAllister Date: Mon, 27 Mar 2017 11:15:12 +0200 Subject: [PATCH 03/14] drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl() In vmw_get_cap_3d_ioctl(), a user can supply 0 for a size that is used in vzalloc(). This eventually calls dump_stack() (in warn_alloc()), which can leak useful addresses to dmesg. Add check to avoid a size of 0. Cc: Signed-off-by: Murray McAllister Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c index b8c6a03c8c54..1802d0e7fab8 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c @@ -186,7 +186,7 @@ int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); - if (unlikely(arg->pad64 != 0)) { + if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) { DRM_ERROR("Illegal GET_3D_CAP argument.\n"); return -EINVAL; } From fe25deb7737ce6c0879ccf79c99fa1221d428bf2 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Mon, 27 Mar 2017 11:21:25 +0200 Subject: [PATCH 04/14] drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces Previously, when a surface was opened using a legacy (non prime) handle, it was verified to have been created by a client in the same master realm. Relax this so that opening is also allowed recursively if the client already has the surface open. This works around a regression in svga mesa where opening of a shared surface is used recursively to obtain surface information. Cc: Signed-off-by: Thomas Hellstrom Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/ttm/ttm_object.c | 10 +++++++--- drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 6 ++---- drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 4 ++-- drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 22 +++++++++------------- include/drm/ttm/ttm_object.h | 5 ++++- 5 files changed, 24 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c index fdb451e3ec01..d750140bafbc 100644 --- a/drivers/gpu/drm/ttm/ttm_object.c +++ b/drivers/gpu/drm/ttm/ttm_object.c @@ -179,7 +179,7 @@ int ttm_base_object_init(struct ttm_object_file *tfile, if (unlikely(ret != 0)) goto out_err0; - ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL); + ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false); if (unlikely(ret != 0)) goto out_err1; @@ -318,7 +318,8 @@ EXPORT_SYMBOL(ttm_ref_object_exists); int ttm_ref_object_add(struct ttm_object_file *tfile, struct ttm_base_object *base, - enum ttm_ref_type ref_type, bool *existed) + enum ttm_ref_type ref_type, bool *existed, + bool require_existed) { struct drm_open_hash *ht = &tfile->ref_hash[ref_type]; struct ttm_ref_object *ref; @@ -345,6 +346,9 @@ int ttm_ref_object_add(struct ttm_object_file *tfile, } rcu_read_unlock(); + if (require_existed) + return -EPERM; + ret = ttm_mem_global_alloc(mem_glob, sizeof(*ref), false, false); if (unlikely(ret != 0)) @@ -635,7 +639,7 @@ int ttm_prime_fd_to_handle(struct ttm_object_file *tfile, prime = (struct ttm_prime_object *) dma_buf->priv; base = &prime->base; *handle = base->hash.key; - ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL); + ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false); dma_buf_put(dma_buf); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c index 4076063e0fdd..6b2708b4eafe 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c @@ -1075,10 +1075,8 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data, (void) vmw_fence_obj_reference(fence); if (user_fence_rep != NULL) { - bool existed; - - ret = ttm_ref_object_add(tfile, base, - TTM_REF_USAGE, &existed); + ret = ttm_ref_object_add(vmw_fp->tfile, base, + TTM_REF_USAGE, NULL, false); if (unlikely(ret != 0)) { DRM_ERROR("Failed to reference a fence " "object.\n"); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index 65b3f0369636..bf23153d4f55 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -589,7 +589,7 @@ static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo, return ret; ret = ttm_ref_object_add(tfile, &user_bo->prime.base, - TTM_REF_SYNCCPU_WRITE, &existed); + TTM_REF_SYNCCPU_WRITE, &existed, false); if (ret != 0 || existed) ttm_bo_synccpu_write_release(&user_bo->dma.base); @@ -773,7 +773,7 @@ int vmw_user_dmabuf_reference(struct ttm_object_file *tfile, *handle = user_bo->prime.base.hash.key; return ttm_ref_object_add(tfile, &user_bo->prime.base, - TTM_REF_USAGE, NULL); + TTM_REF_USAGE, NULL, false); } /* diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c index f410502cb075..adc023fe67f3 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c @@ -891,17 +891,16 @@ vmw_surface_handle_reference(struct vmw_private *dev_priv, uint32_t handle; struct ttm_base_object *base; int ret; + bool require_exist = false; if (handle_type == DRM_VMW_HANDLE_PRIME) { ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle); if (unlikely(ret != 0)) return ret; } else { - if (unlikely(drm_is_render_client(file_priv))) { - DRM_ERROR("Render client refused legacy " - "surface reference.\n"); - return -EACCES; - } + if (unlikely(drm_is_render_client(file_priv))) + require_exist = true; + if (ACCESS_ONCE(vmw_fpriv(file_priv)->locked_master)) { DRM_ERROR("Locked master refused legacy " "surface reference.\n"); @@ -929,17 +928,14 @@ vmw_surface_handle_reference(struct vmw_private *dev_priv, /* * Make sure the surface creator has the same - * authenticating master. + * authenticating master, or is already registered with us. */ if (drm_is_primary_client(file_priv) && - user_srf->master != file_priv->master) { - DRM_ERROR("Trying to reference surface outside of" - " master domain.\n"); - ret = -EACCES; - goto out_bad_resource; - } + user_srf->master != file_priv->master) + require_exist = true; - ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL); + ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, + require_exist); if (unlikely(ret != 0)) { DRM_ERROR("Could not add a reference to a surface.\n"); goto out_bad_resource; diff --git a/include/drm/ttm/ttm_object.h b/include/drm/ttm/ttm_object.h index ed953f98f0e1..1487011fe057 100644 --- a/include/drm/ttm/ttm_object.h +++ b/include/drm/ttm/ttm_object.h @@ -229,6 +229,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base); * @ref_type: The type of reference. * @existed: Upon completion, indicates that an identical reference object * already existed, and the refcount was upped on that object instead. + * @require_existed: Fail with -EPERM if an identical ref object didn't + * already exist. * * Checks that the base object is shareable and adds a ref object to it. * @@ -243,7 +245,8 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base); */ extern int ttm_ref_object_add(struct ttm_object_file *tfile, struct ttm_base_object *base, - enum ttm_ref_type ref_type, bool *existed); + enum ttm_ref_type ref_type, bool *existed, + bool require_existed); extern bool ttm_ref_object_exists(struct ttm_object_file *tfile, struct ttm_base_object *base); From 3ce7803cf3a7bc52c0eb9f516de8b72a0305ad57 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Mon, 27 Mar 2017 12:38:25 +0200 Subject: [PATCH 05/14] drm/ttm: Avoid calling drm_ht_remove from atomic context On recent kernels, calling drm_ht_remove triggers a might_sleep() warning from within vfree(). So avoid calling it from atomic context. The use-cases we fix here are both from destructors so there should be no concurrent use of the hash tables. Signed-off-by: Thomas Hellstrom Reviewed-by: Brian Paul Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/ttm/ttm_object.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c index d750140bafbc..26a7ad0f4789 100644 --- a/drivers/gpu/drm/ttm/ttm_object.c +++ b/drivers/gpu/drm/ttm/ttm_object.c @@ -453,10 +453,10 @@ void ttm_object_file_release(struct ttm_object_file **p_tfile) ttm_ref_object_release(&ref->kref); } + spin_unlock(&tfile->lock); for (i = 0; i < TTM_REF_NUM; ++i) drm_ht_remove(&tfile->ref_hash[i]); - spin_unlock(&tfile->lock); ttm_object_file_unref(&tfile); } EXPORT_SYMBOL(ttm_object_file_release); @@ -533,9 +533,7 @@ void ttm_object_device_release(struct ttm_object_device **p_tdev) *p_tdev = NULL; - spin_lock(&tdev->object_lock); drm_ht_remove(&tdev->object_hash); - spin_unlock(&tdev->object_lock); kfree(tdev); } From 53e16798b0864464c5444a204e1bb93ae246c429 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Mon, 27 Mar 2017 13:06:05 +0200 Subject: [PATCH 06/14] drm/vmwgfx: Remove getparam error message The mesa winsys sometimes uses unimplemented parameter requests to check for features. Remove the error message to avoid bloating the kernel log. Cc: Signed-off-by: Thomas Hellstrom Reviewed-by: Brian Paul Reviewed-by: Sinclair Yeh --- drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c index 1802d0e7fab8..5ec24fd801cd 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c @@ -114,8 +114,6 @@ int vmw_getparam_ioctl(struct drm_device *dev, void *data, param->value = dev_priv->has_dx; break; default: - DRM_ERROR("Illegal vmwgfx get param request: %d\n", - param->param); return -EINVAL; } From e7e11f99564222d82f0ce84bd521e57d78a6b678 Mon Sep 17 00:00:00 2001 From: Li Qiang Date: Mon, 27 Mar 2017 20:10:53 -0700 Subject: [PATCH 07/14] drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() In vmw_surface_define_ioctl(), the 'num_sizes' is the sum of the 'req->mip_levels' array. This array can be assigned any value from the user space. As both the 'num_sizes' and the array is uint32_t, it is easy to make 'num_sizes' overflow. The later 'mip_levels' is used as the loop count. This can lead an oob write. Add the check of 'req->mip_levels' to avoid this. Cc: Signed-off-by: Li Qiang Reviewed-by: Thomas Hellstrom --- drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c index adc023fe67f3..05fa092c942b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c @@ -713,8 +713,11 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data, 128; num_sizes = 0; - for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) + for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) { + if (req->mip_levels[i] > DRM_VMW_MAX_MIP_LEVELS) + return -EINVAL; num_sizes += req->mip_levels[i]; + } if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS || num_sizes == 0) From 280489daa68bd20364b322c11e3f429a0212c611 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 13 Mar 2017 17:43:48 +0100 Subject: [PATCH 08/14] drm/msm: adreno: fix build error without debugfs The newly added a5xx support fails to build when debugfs is diabled: drivers/gpu/drm/msm/adreno/a5xx_gpu.c:849:4: error: 'struct msm_gpu_funcs' has no member named 'show' drivers/gpu/drm/msm/adreno/a5xx_gpu.c:849:11: error: 'a5xx_show' undeclared here (not in a function); did you mean 'a5xx_irq'? This adds a missing #ifdef. Fixes: b5f103ab98c7 ("drm/msm: gpu: Add A5XX target support") Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index 4414cf73735d..f0c8bd74ca91 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -860,7 +860,9 @@ static const struct adreno_gpu_funcs funcs = { .idle = a5xx_idle, .irq = a5xx_irq, .destroy = a5xx_destroy, +#ifdef CONFIG_DEBUG_FS .show = a5xx_show, +#endif }, .get_timestamp = a5xx_get_timestamp, }; From f456d348b6320a2597a3f1fff3ad0011c5678603 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Tue, 7 Mar 2017 09:50:27 -0700 Subject: [PATCH 09/14] drm/msm: Fix wrong pointer check in a5xx_destroy Instead of checking for a5xx_gpu->gpmu_iova during destroy we accidently check a5xx_gpu->gpmu_bo. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index f0c8bd74ca91..36602ac7e248 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2016 The Linux Foundation. All rights reserved. +/* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -534,7 +534,7 @@ static void a5xx_destroy(struct msm_gpu *gpu) } if (a5xx_gpu->gpmu_bo) { - if (a5xx_gpu->gpmu_bo) + if (a5xx_gpu->gpmu_iova) msm_gem_put_iova(a5xx_gpu->gpmu_bo, gpu->id); drm_gem_object_unreference_unlocked(a5xx_gpu->gpmu_bo); } From 1a5dff5d74e55608a9632a1d030bb79196e0755c Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Tue, 7 Mar 2017 10:02:51 -0700 Subject: [PATCH 10/14] drm/msm: Don't allow zero sized buffer objects Zero sized buffer objects tend to make various bits of the GEM infrastructure complain: WARNING: CPU: 1 PID: 2323 at drivers/gpu/drm/drm_mm.c:389 drm_mm_insert_node_generic+0x258/0x2f0 Modules linked in: CPU: 1 PID: 2323 Comm: drm-api-test Tainted: G W 4.9.0-rc4-00906-g693af44 #213 Hardware name: Qualcomm Technologies, Inc. DB820c (DT) task: ffff8000d7353400 task.stack: ffff8000d7720000 PC is at drm_mm_insert_node_generic+0x258/0x2f0 LR is at drm_vma_offset_add+0x4c/0x70 Zero sized buffers serve no appreciable value to the user so disallow them at create time. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 59811f29607d..68e509b3b9e4 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -812,6 +812,12 @@ struct drm_gem_object *msm_gem_new(struct drm_device *dev, size = PAGE_ALIGN(size); + /* Disallow zero sized objects as they make the underlying + * infrastructure grumpy + */ + if (size == 0) + return ERR_PTR(-EINVAL); + ret = msm_gem_new_impl(dev, size, flags, NULL, &obj); if (ret) goto fail; From a5fef535c529b64b622f9d7eafb3ab86850f5f8f Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 16 Feb 2017 16:29:04 +0530 Subject: [PATCH 11/14] drm/msm/dsi: Fix bug in dsi_mgr_phy_enable A recent commit introduces a bug in dsi_mgr_phy_enable. In the non dual DSI mode, we reset the mdsi (master DSI) PHY. This isn't right since master and slave DSI exist only in dual DSI mode. For the normal mode of operation, we should simply reset the PHY of the DSI device (i.e. msm_dsi) corresponding to the current bridge. Usage of the wrong DSI pointer also resulted in a static checker warning. That too is resolved with this fix. Fixes: b62aa70a98c5 (drm/msm/dsi: Move PHY operations out of host) Reported-by: Dan Carpenter Signed-off-by: Archit Taneja Reviewed-by: Rob Clark Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi_manager.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 921270ea6059..a879ffa534b4 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -171,7 +171,7 @@ dsi_mgr_phy_enable(int id, } } } else { - msm_dsi_host_reset_phy(mdsi->host); + msm_dsi_host_reset_phy(msm_dsi->host); ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]); if (ret) return ret; From 30512040ed8e1982e5ba16bb3e3a7f000ff65427 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Fri, 17 Mar 2017 09:09:48 +0530 Subject: [PATCH 12/14] drm/msm/mdp5: Update SSPP_MAX value 'SSPP_MAX + 1' is the max number of hwpipes that can be present on a MDP5 platform. Recently, 2 new cursor hwpipes were added, which caused overflows in arrays that used SSPP_MAX to represent the number of elements. Update the SSPP_MAX value to incorporate the extra hwpipes. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_pipe.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_pipe.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_pipe.h index 611da7a660c9..238901987e00 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_pipe.h +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_pipe.h @@ -18,7 +18,8 @@ #ifndef __MDP5_PIPE_H__ #define __MDP5_PIPE_H__ -#define SSPP_MAX (SSPP_RGB3 + 1) /* TODO: Add SSPP_MAX in mdp5.xml.h */ +/* TODO: Add SSPP_MAX in mdp5.xml.h */ +#define SSPP_MAX (SSPP_CURSOR1 + 1) /* represents a hw pipe, which is dynamically assigned to a plane */ struct mdp5_hw_pipe { From d322a693f585832130c3d09f2175b8f2b3ae99e1 Mon Sep 17 00:00:00 2001 From: Vinay Simha BN Date: Tue, 14 Mar 2017 10:55:56 +0530 Subject: [PATCH 13/14] drm/msm/hdmi: redefinitions of macros not required 4 macros already defined in hdmi.h, which is not required to redefine in hdmi_audio.c Signed-off-by: Vinay Simha BN Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/hdmi/hdmi_audio.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_audio.c b/drivers/gpu/drm/msm/hdmi/hdmi_audio.c index a54d3bb5baad..8177e8511afd 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_audio.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_audio.c @@ -18,13 +18,6 @@ #include #include "hdmi.h" - -/* Supported HDMI Audio channels */ -#define MSM_HDMI_AUDIO_CHANNEL_2 0 -#define MSM_HDMI_AUDIO_CHANNEL_4 1 -#define MSM_HDMI_AUDIO_CHANNEL_6 2 -#define MSM_HDMI_AUDIO_CHANNEL_8 3 - /* maps MSM_HDMI_AUDIO_CHANNEL_n consts used by audio driver to # of channels: */ static int nchannels[] = { 2, 4, 6, 8 }; From 028402d4bcfd3e99421504674cc41b0cd32768c8 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Mon, 6 Feb 2017 10:39:29 -0700 Subject: [PATCH 14/14] drm/msm: Make sure to detach the MMU during GPU cleanup We should be detaching the MMU before destroying the address space. To do this cleanly, the detach has to happen in adreno_gpu_cleanup() because it needs access to structs in adreno_gpu.c. Plus it is better symmetry to have the attach and detach at the same code level. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 29 ++++++++++++++++--------- drivers/gpu/drm/msm/msm_gpu.c | 3 --- 2 files changed, 19 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index c9bd1e6225f4..5ae65426b4e5 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -418,18 +418,27 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, return 0; } -void adreno_gpu_cleanup(struct adreno_gpu *gpu) +void adreno_gpu_cleanup(struct adreno_gpu *adreno_gpu) { - if (gpu->memptrs_bo) { - if (gpu->memptrs) - msm_gem_put_vaddr(gpu->memptrs_bo); + struct msm_gpu *gpu = &adreno_gpu->base; - if (gpu->memptrs_iova) - msm_gem_put_iova(gpu->memptrs_bo, gpu->base.id); + if (adreno_gpu->memptrs_bo) { + if (adreno_gpu->memptrs) + msm_gem_put_vaddr(adreno_gpu->memptrs_bo); - drm_gem_object_unreference_unlocked(gpu->memptrs_bo); + if (adreno_gpu->memptrs_iova) + msm_gem_put_iova(adreno_gpu->memptrs_bo, gpu->id); + + drm_gem_object_unreference_unlocked(adreno_gpu->memptrs_bo); + } + release_firmware(adreno_gpu->pm4); + release_firmware(adreno_gpu->pfp); + + msm_gpu_cleanup(gpu); + + if (gpu->aspace) { + gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu, + iommu_ports, ARRAY_SIZE(iommu_ports)); + msm_gem_address_space_destroy(gpu->aspace); } - release_firmware(gpu->pm4); - release_firmware(gpu->pfp); - msm_gpu_cleanup(&gpu->base); } diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 99e05aacbee1..af5b6ba4095b 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -706,9 +706,6 @@ void msm_gpu_cleanup(struct msm_gpu *gpu) msm_ringbuffer_destroy(gpu->rb); } - if (gpu->aspace) - msm_gem_address_space_destroy(gpu->aspace); - if (gpu->fctx) msm_fence_context_free(gpu->fctx); }