From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAF14C38142 for ; Sat, 28 Jan 2023 07:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232458AbjA1HOZ (ORCPT ); Sat, 28 Jan 2023 02:14:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229737AbjA1HOY (ORCPT ); Sat, 28 Jan 2023 02:14:24 -0500 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36BC82ED4F for ; Fri, 27 Jan 2023 23:14:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674890063; x=1706426063; h=date:from:to:cc:subject:message-id:mime-version; bh=atefpNtY17E9LVpYSxCv+VPF+1rEkRnr86d0kwCPXco=; b=ix76oqfg7Ty93X6NpvoBnP//Zh+FkXR49sp5UfFXbd4k4LFpkk53KPmZ 8uZeXwQOxSXmBvcoIXl37DrEhllSSgm0ExnODjcWPfdAwJ/TsPpIMtNH1 gsF4cD6vNuKnKYVVctKfqTytGoma/u1I9ZBoGVYbI/KJfyhRbe2dZOQeb RWjRMozrMfYDYku85qre7HIsMnuM9lGWZFh4ferB00pczo9mgQ07nFqAD ZPTdTavFnZxl7XP5wvL2E+Ou/G/tdXvmNNfabvlLWFEoYnF20NMYKWMEG butGDqe2mMkP1vXYGw27n3JIUv3Z3FVF5A5Pp/ZnvpeidMjFgC8DqyuQD w==; X-IronPort-AV: E=McAfee;i="6500,9779,10603"; a="389650127" X-IronPort-AV: E=Sophos;i="5.97,253,1669104000"; d="scan'208";a="389650127" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2023 23:14:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10603"; a="837401950" X-IronPort-AV: E=Sophos;i="5.97,253,1669104000"; d="scan'208";a="837401950" Received: from lkp-server01.sh.intel.com (HELO ffa7f14d1d0f) ([10.239.97.150]) by orsmga005.jf.intel.com with ESMTP; 27 Jan 2023 23:14:21 -0800 Received: from kbuild by ffa7f14d1d0f with local (Exim 4.96) (envelope-from ) id 1pLfPo-0000TV-1b; Sat, 28 Jan 2023 07:14:20 +0000 Date: Sat, 28 Jan 2023 15:14:14 +0800 From: kernel test robot To: Jens Axboe Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: io_uring/io_uring.c:2932:40: error: variable 'prev' set but not used Message-ID: <202301281505.Y1qiPCDf-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Jens, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5af6ce7049365952f7f023155234fe091693ead1 commit: ed29b0b4fd835b058ddd151c49d021e28d631ee6 io_uring: move to separate directory date: 6 months ago config: x86_64-sof-customedconfig-edison-defconfig (https://download.01.org/0day-ci/archive/20230128/202301281505.Y1qiPCDf-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed29b0b4fd835b058ddd151c49d021e28d631ee6 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ed29b0b4fd835b058ddd151c49d021e28d631ee6 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): io_uring/io_uring.c: In function '__io_submit_flush_completions': >> io_uring/io_uring.c:2932:40: error: variable 'prev' set but not used [-Werror=unused-but-set-variable] 2932 | struct io_wq_work_node *node, *prev; | ^~~~ cc1: all warnings being treated as errors vim +/prev +2932 io_uring/io_uring.c 7a743e225b2a9da fs/io_uring.c Pavel Begunkov 2020-03-03 2928 c450178d9be9dc4 fs/io_uring.c Pavel Begunkov 2021-09-08 2929 static void __io_submit_flush_completions(struct io_ring_ctx *ctx) a141dd896f544df fs/io_uring.c Jens Axboe 2021-08-12 2930 __must_hold(&ctx->uring_lock) 905c172f32c56f0 fs/io_uring.c Pavel Begunkov 2021-02-10 2931 { 6f33b0bc4ea43f5 fs/io_uring.c Pavel Begunkov 2021-09-24 @2932 struct io_wq_work_node *node, *prev; cd0ca2e048dc0dd fs/io_uring.c Pavel Begunkov 2021-08-09 2933 struct io_submit_state *state = &ctx->submit_state; 905c172f32c56f0 fs/io_uring.c Pavel Begunkov 2021-02-10 2934 3d4aeb9f98058c3 fs/io_uring.c Pavel Begunkov 2021-11-10 2935 if (state->flush_cqes) { 79ebeaee8a21a00 fs/io_uring.c Jens Axboe 2021-08-10 2936 spin_lock(&ctx->completion_lock); 6f33b0bc4ea43f5 fs/io_uring.c Pavel Begunkov 2021-09-24 2937 wq_list_for_each(node, prev, &state->compl_reqs) { 6f33b0bc4ea43f5 fs/io_uring.c Pavel Begunkov 2021-09-24 2938 struct io_kiocb *req = container_of(node, struct io_kiocb, 6f33b0bc4ea43f5 fs/io_uring.c Pavel Begunkov 2021-09-24 2939 comp_list); 5182ed2e332e8e1 fs/io_uring.c Pavel Begunkov 2021-06-26 2940 f43de1f88841d59 fs/io_uring.c Pavel Begunkov 2022-06-15 2941 if (!(req->flags & REQ_F_CQE_SKIP)) 91ef75a7db0d085 fs/io_uring.c Pavel Begunkov 2022-06-15 2942 __io_fill_cqe_req(ctx, req); 905c172f32c56f0 fs/io_uring.c Pavel Begunkov 2021-02-10 2943 } 3d4aeb9f98058c3 fs/io_uring.c Pavel Begunkov 2021-11-10 2944 905c172f32c56f0 fs/io_uring.c Pavel Begunkov 2021-02-10 2945 io_commit_cqring(ctx); 79ebeaee8a21a00 fs/io_uring.c Jens Axboe 2021-08-10 2946 spin_unlock(&ctx->completion_lock); 905c172f32c56f0 fs/io_uring.c Pavel Begunkov 2021-02-10 2947 io_cqring_ev_posted(ctx); 3d4aeb9f98058c3 fs/io_uring.c Pavel Begunkov 2021-11-10 2948 state->flush_cqes = false; 3d4aeb9f98058c3 fs/io_uring.c Pavel Begunkov 2021-11-10 2949 } 5182ed2e332e8e1 fs/io_uring.c Pavel Begunkov 2021-06-26 2950 1cce17aca621c38 fs/io_uring.c Pavel Begunkov 2021-09-24 2951 io_free_batch_list(ctx, state->compl_reqs.first); 6f33b0bc4ea43f5 fs/io_uring.c Pavel Begunkov 2021-09-24 2952 INIT_WQ_LIST(&state->compl_reqs); 7a743e225b2a9da fs/io_uring.c Pavel Begunkov 2020-03-03 2953 } 7a743e225b2a9da fs/io_uring.c Pavel Begunkov 2020-03-03 2954 :::::: The code at line 2932 was first introduced by commit :::::: 6f33b0bc4ea43f5c5ce7b7c9ab66051f80837862 io_uring: use slist for completion batching :::::: TO: Pavel Begunkov :::::: CC: Jens Axboe -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests