5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xianting Tian [ Upstream commit 56b5e65efe0001fb5f95e412ee4167363debfc46 ] For virtio-net we were getting CPU stall warnings, and fixed it by calling the scheduler: see f8bb51043945 ("virtio_net: suppress cpu stall when free_unused_bufs"). This driver is similar so theoretically the same logic applies. Signed-off-by: Xianting Tian Message-Id: <20230609131817.712867-3-xianting.tian@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin Stable-dep-of: 894f98e73983 ("virtio_console: do not free control-out buffers on remove") Signed-off-by: Sasha Levin --- drivers/char/virtio_console.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 712db89020f31..ed11f3104785a 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1943,6 +1943,7 @@ static void remove_vqs(struct ports_device *portdev) flush_bufs(vq, true); while ((buf = virtqueue_detach_unused_buf(vq))) free_buf(buf, true); + cond_resched(); } portdev->vdev->config->del_vqs(portdev->vdev); kfree(portdev->in_vqs); -- 2.53.0