Patch "drm/amdgpu: add missing NULL check" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amdgpu: add missing NULL check

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-add-missing-null-check.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From ff89f064dca38e2203790bf876cc7756b8ab2961 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
Date: Fri, 6 Oct 2023 14:04:04 +0200
Subject: drm/amdgpu: add missing NULL check
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Christian König <christian.koenig@xxxxxxx>

commit ff89f064dca38e2203790bf876cc7756b8ab2961 upstream.

bo->tbo.resource can easily be NULL here.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2902
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
CC: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -220,7 +220,7 @@ static inline bool amdgpu_bo_in_cpu_visi
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 	struct amdgpu_res_cursor cursor;
 
-	if (bo->tbo.resource->mem_type != TTM_PL_VRAM)
+	if (!bo->tbo.resource || bo->tbo.resource->mem_type != TTM_PL_VRAM)
 		return false;
 
 	amdgpu_res_first(bo->tbo.resource, 0, amdgpu_bo_size(bo), &cursor);


Patches currently in stable-queue which might be from christian.koenig@xxxxxxx are

queue-6.1/drm-amdgpu-add-missing-null-check.patch
queue-6.1/dma-buf-add-dma_fence_timestamp-helper.patch



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