On Mon, Dec 27, 2021 at 08:54:40PM +0800, Jeffle Xu wrote:> + spin_lock(&cache->reqs_lock);> + ret = idr_alloc(&cache->reqs, req, 0, 0, GFP_KERNEL);GFP_KERNEL while holding a spinlock?You should be using an XArray instead of an IDR in new code anyway.