summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2016-06-10 09:45:42 +1000
committerDave Airlie <airlied@redhat.com>2016-06-10 09:45:42 +1000
commit166108aa263013d3b9965793dcdc97f374ed73ac (patch)
treeaecdea0e7c4b7bddd05050f4727254eb007c88e0 /drivers/gpu/drm
parent170fba306af798bc1249b6ba925cf9031f3b3806 (diff)
parenta9e26cab40ecfd4a0d718f22fa30db4dd1edbf60 (diff)
Merge branch 'msm-fixes-4.7-rc3' of git://people.freedesktop.org/~robclark/linux into drm-fixes
* 'msm-fixes-4.7-rc3' of git://people.freedesktop.org/~robclark/linux: drm/msm: fix potential submit error path issue drm/msm: fix some crashes in submit fail path drm/msm: deal with exhausted vmap space better
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/msm/adreno/adreno_gpu.c2
-rw-r--r--drivers/gpu/drm/msm/msm_fbdev.c4
-rw-r--r--drivers/gpu/drm/msm/msm_gem.c2
-rw-r--r--drivers/gpu/drm/msm/msm_gem_submit.c7
-rw-r--r--drivers/gpu/drm/msm/msm_rd.c3
-rw-r--r--drivers/gpu/drm/msm/msm_ringbuffer.c4
6 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index fbe304ee6c80..2aec27dbb5bb 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -408,7 +408,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
}
adreno_gpu->memptrs = msm_gem_vaddr(adreno_gpu->memptrs_bo);
- if (!adreno_gpu->memptrs) {
+ if (IS_ERR(adreno_gpu->memptrs)) {
dev_err(drm->dev, "could not vmap memptrs\n");
return -ENOMEM;
}
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index d9759bf3482e..c6cf837c5193 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -159,6 +159,10 @@ static int msm_fbdev_create(struct drm_fb_helper *helper,
dev->mode_config.fb_base = paddr;
fbi->screen_base = msm_gem_vaddr_locked(fbdev->bo);
+ if (IS_ERR(fbi->screen_base)) {
+ ret = PTR_ERR(fbi->screen_base);
+ goto fail_unlock;
+ }
fbi->screen_size = fbdev->bo->size;
fbi->fix.smem_start = paddr;
fbi->fix.smem_len = fbdev->bo->size;
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 7daf4054dd2b..69836f5685b1 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -398,6 +398,8 @@ void *msm_gem_vaddr_locked(struct drm_gem_object *obj)
return ERR_CAST(pages);
msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT,
VM_MAP, pgprot_writecombine(PAGE_KERNEL));
+ if (msm_obj->vaddr == NULL)
+ return ERR_PTR(-ENOMEM);
}
return msm_obj->vaddr;
}
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index b89ca5174863..eb4bb8b2f3a5 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -40,12 +40,14 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
submit->dev = dev;
submit->gpu = gpu;
+ submit->fence = NULL;
submit->pid = get_pid(task_pid(current));
/* initially, until copy_from_user() and bo lookup succeeds: */
submit->nr_bos = 0;
submit->nr_cmds = 0;
+ INIT_LIST_HEAD(&submit->node);
INIT_LIST_HEAD(&submit->bo_list);
ww_acquire_init(&submit->ticket, &reservation_ww_class);
@@ -75,6 +77,11 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
void __user *userptr =
u64_to_user_ptr(args->bos + (i * sizeof(submit_bo)));
+ /* make sure we don't have garbage flags, in case we hit
+ * error path before flags is initialized:
+ */
+ submit->bos[i].flags = 0;
+
ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo));
if (ret) {
ret = -EFAULT;
diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index b48f73ac6389..0857710c2ff2 100644
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -312,6 +312,9 @@ void msm_rd_dump_submit(struct msm_gem_submit *submit)
struct msm_gem_object *obj = submit->bos[idx].obj;
const char *buf = msm_gem_vaddr_locked(&obj->base);
+ if (IS_ERR(buf))
+ continue;
+
buf += iova - submit->bos[idx].iova;
rd_write_section(rd, RD_GPUADDR,
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
index 1f14b908b221..42f5359cf988 100644
--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -40,6 +40,10 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size)
}
ring->start = msm_gem_vaddr_locked(ring->bo);
+ if (IS_ERR(ring->start)) {
+ ret = PTR_ERR(ring->start);
+ goto fail;
+ }
ring->end = ring->start + (size / 4);
ring->cur = ring->start;