From 2e65ea1ab2f6f3731aba373917d509216701cbe6 Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Fri, 25 Oct 2024 16:15:02 +0530 Subject: [PATCH 3066/5403] drm/amdgpu: screen freeze and userq driver crash MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Screen freeze and userq fence driver crash while playing Xonotic v2: (Christian) - There is change that fence might signal in between testing and grabbing the lock. Hence we can move the lock above the if..else check and use the dma_fence_is_signaled_locked(). Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c index f7baea2c67ab..3693453d8b60 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c @@ -171,6 +171,7 @@ int amdgpu_userq_fence_create(struct amdgpu_usermode_queue *userq, struct amdgpu_userq_fence_driver *fence_drv; struct amdgpu_userq_fence *userq_fence; struct dma_fence *fence; + unsigned long flags; fence_drv = userq->fence_drv; if (!fence_drv) @@ -191,14 +192,14 @@ int amdgpu_userq_fence_create(struct amdgpu_usermode_queue *userq, amdgpu_userq_fence_driver_get(fence_drv); dma_fence_get(fence); - spin_lock(&fence_drv->fence_list_lock); /* Check if hardware has already processed the job */ - if (!dma_fence_is_signaled(fence)) + spin_lock_irqsave(&fence_drv->fence_list_lock, flags); + if (!dma_fence_is_signaled_locked(fence)) list_add_tail(&userq_fence->link, &fence_drv->fences); else dma_fence_put(fence); - spin_unlock(&fence_drv->fence_list_lock); + spin_unlock_irqrestore(&fence_drv->fence_list_lock, flags); *f = fence; -- 2.54.0