6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wludzik, Jozef [ Upstream commit 63c7870fab67b2ab2bfe75e8b46f3c37b88c47a8 ] Fix a race that can occur when multiple jobs submit the same dmabuf. This could cause the sg_table to be mapped twice, leading to undefined behavior. Fixes: e0c0891cd63b ("accel/ivpu: Rework bind/unbind of imported buffers") Signed-off-by: Wludzik, Jozef Reviewed-by: Jeff Hugo Signed-off-by: Karol Wachowski Link: https://lore.kernel.org/r/20251014071725.3047287-1-karol.wachowski@linux.intel.com Signed-off-by: Sasha Levin --- drivers/accel/ivpu/ivpu_gem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/accel/ivpu/ivpu_gem.c b/drivers/accel/ivpu/ivpu_gem.c index 1f66355ffe9fb..3929357a61a37 100644 --- a/drivers/accel/ivpu/ivpu_gem.c +++ b/drivers/accel/ivpu/ivpu_gem.c @@ -45,12 +45,13 @@ static inline void ivpu_bo_unlock(struct ivpu_bo *bo) static struct sg_table *ivpu_bo_map_attachment(struct ivpu_device *vdev, struct ivpu_bo *bo) { - struct sg_table *sgt = bo->base.sgt; + struct sg_table *sgt; drm_WARN_ON(&vdev->drm, !bo->base.base.import_attach); ivpu_bo_lock(bo); + sgt = bo->base.sgt; if (!sgt) { sgt = dma_buf_map_attachment(bo->base.base.import_attach, DMA_BIDIRECTIONAL); if (IS_ERR(sgt)) -- 2.53.0