tree:   https://github.com/omap-audio/linux-audio peter/linux-next-wip
head:   d08c31cfb65e8197b0ab607484d26fc48366dcee
commit: 593365467b869247ed6ee30c1ba92b553b4d5a3c [5558/6167] io_uring: use slist for completion batching
config: nios2-defconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/omap-audio/linux-audio/commit/593365467b869247ed6ee30c1ba92b553b4d5a3c
        git remote add omap-audio https://github.com/omap-audio/linux-audio
        git fetch --no-tags omap-audio peter/linux-next-wip
        git checkout 593365467b869247ed6ee30c1ba92b553b4d5a3c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   fs/io_uring.c: In function 'io_queue_async_work':
   fs/io_uring.c:1456:61: warning: parameter 'locked' set but not used [-Wunused-but-set-parameter]
    1456 | static void io_queue_async_work(struct io_kiocb *req, bool *locked)
         |                                                       ~~~~~~^~~~~~
   fs/io_uring.c: In function '__io_submit_flush_completions':
>> fs/io_uring.c:2335:40: warning: variable 'prev' set but not used [-Wunused-but-set-variable]
    2335 |         struct io_wq_work_node *node, *prev;
         |                                        ^~~~


vim +/prev +2335 fs/io_uring.c

  2331	
  2332	static void __io_submit_flush_completions(struct io_ring_ctx *ctx)
  2333		__must_hold(&ctx->uring_lock)
  2334	{
> 2335		struct io_wq_work_node *node, *prev;
  2336		struct io_submit_state *state = &ctx->submit_state;
  2337		struct req_batch rb;
  2338	
  2339		spin_lock(&ctx->completion_lock);
  2340		wq_list_for_each(node, prev, &state->compl_reqs) {
  2341			struct io_kiocb *req = container_of(node, struct io_kiocb,
  2342							    comp_list);
  2343	
  2344			__io_cqring_fill_event(ctx, req->user_data, req->result,
  2345						req->compl.cflags);
  2346		}
  2347		io_commit_cqring(ctx);
  2348		spin_unlock(&ctx->completion_lock);
  2349		io_cqring_ev_posted(ctx);
  2350	
  2351		io_init_req_batch(&rb);
  2352		node = state->compl_reqs.first;
  2353		do {
  2354			struct io_kiocb *req = container_of(node, struct io_kiocb,
  2355							    comp_list);
  2356	
  2357			node = req->comp_list.next;
  2358			if (req_ref_put_and_test(req))
  2359				io_req_free_batch(&rb, req, &ctx->submit_state);
  2360		} while (node);
  2361	
  2362		io_req_free_batch_finish(ctx, &rb);
  2363		INIT_WQ_LIST(&state->compl_reqs);
  2364	}
  2365	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org