The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 1ac5167b3a90c9820daa64cc65e319b2d958d686 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024081210-gathering-rocklike-26ad@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

1ac5167b3a90 ("drm/i915/gem: Adjust vma offset for framebuffer mmap offset") 274d4b96b12f ("drm/i915: Fix a NULL vs IS_ERR() bug") eaee1c085863 ("drm/i915: Add a function to mmap framebuffer obj")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 1ac5167b3a90c9820daa64cc65e319b2d958d686 Mon Sep 17 00:00:00 2001 From: Andi Shyti andi.shyti@linux.intel.com Date: Fri, 2 Aug 2024 10:38:49 +0200 Subject: [PATCH] drm/i915/gem: Adjust vma offset for framebuffer mmap offset

When mapping a framebuffer object, the virtual memory area (VMA) offset ('vm_pgoff') should be adjusted by the start of the 'vma_node' associated with the object. This ensures that the VMA offset is correctly aligned with the corresponding offset within the GGTT aperture.

Increment vm_pgoff by the start of the vma_node with the offset= provided by the user.

Suggested-by: Chris Wilson chris.p.wilson@linux.intel.com Signed-off-by: Andi Shyti andi.shyti@linux.intel.com Reviewed-by: Jonathan Cavitt jonathan.cavitt@intel.com Reviewed-by: Rodrigo Vivi rodrigo.vivi@intel.com Cc: stable@vger.kernel.org # v4.9+ [Joonas: Add Cc: stable] Signed-off-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240802083850.103694-2-andi.s... (cherry picked from commit 60a2066c50058086510c91f404eb582029650970) Signed-off-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index a2195e28b625..ce10dd259812 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -1084,6 +1084,8 @@ int i915_gem_fb_mmap(struct drm_i915_gem_object *obj, struct vm_area_struct *vma mmo = mmap_offset_attach(obj, mmap_type, NULL); if (IS_ERR(mmo)) return PTR_ERR(mmo); + + vma->vm_pgoff += drm_vma_node_start(&mmo->vma_node); }

/*