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| author |   James Morris <james.morris@microsoft.com> | 2018-09-04 11:35:54 -0700 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2018-09-04 11:35:54 -0700 |
| commit | e42f6f9be4f83c537aa81b4c6239ea94ff5b29ce (patch) | |
| tree | f956a5ea0e83fc6d0df3e64681e7bbc1f201f3ee /drivers/gpu/drm/drm_gem.c | |
| parent | security/capabilities: remove check for -EINVAL (diff) | |
| parent | Linux 4.19-rc2 (diff) | |
| download | linux-dev-e42f6f9be4f83c537aa81b4c6239ea94ff5b29ce.tar.xz linux-dev-e42f6f9be4f83c537aa81b4c6239ea94ff5b29ce.zip | |
Merge tag 'v4.19-rc2' into next-general
Sync to Linux 4.19-rc2 for downstream developers.
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/drm_gem.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 4a16d7b26c89..bf90625df3c5 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -1036,6 +1036,15 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) return -EACCES; } + if (node->readonly) { + if (vma->vm_flags & VM_WRITE) { + drm_gem_object_put_unlocked(obj); + return -EINVAL; + } + + vma->vm_flags &= ~VM_MAYWRITE; + } + ret = drm_gem_mmap_obj(obj, drm_vma_node_size(node) << PAGE_SHIFT, vma); |