From 666ca3d8f19082f40745d75f3cc7cc0200ee87e3 Mon Sep 17 00:00:00 2001 From: Ilia Mirkin Date: Fri, 9 Sep 2016 22:34:02 -0400 Subject: [PATCH] drm/nouveau/fifo/nv04: avoid ramht race against cookie insertion Signed-off-by: Ilia Mirkin Cc: stable@vger.kernel.org Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c index edec30fd3ecd..0a7b6ed5ed28 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c @@ -37,7 +37,10 @@ nv04_fifo_dma_object_dtor(struct nvkm_fifo_chan *base, int cookie) { struct nv04_fifo_chan *chan = nv04_fifo_chan(base); struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem; + + mutex_lock(&chan->fifo->base.engine.subdev.mutex); nvkm_ramht_remove(imem->ramht, cookie); + mutex_unlock(&chan->fifo->base.engine.subdev.mutex); } static int -- 2.20.1