Hi Jacek, On 2025-01-08 at 11:53:46 +0100, Jacek Lawrynowicz wrote: > drm_gem_mmap_obj() expects VM_DONTEXPAND flag to be set after mmap > callback is executed. Set this flag at the end of i915_gem_dmabuf_mmap() > to prevent WARN on mmap in buffers imported from i915 e.g., ... > +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c > @@ -110,6 +110,7 @@ static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, > struct vm_area_struct * > if (ret) > return ret; > > + vm_flags_set(vma, VM_DONTEXPAND); > vma_set_file(vma, obj->base.filp); > > return 0; > Is this an existing issue somewhere (on GitLab for example)? The fix looks good, I'm just curious how you noticed this problem and if the patch should have "Fixes/Closes" labels added.
Krzysztof
