From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D67682E401 for ; Wed, 14 Jan 2026 03:32:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768361531; cv=none; b=PXUSXAECeE1cQeJr5V8210GQ3OrphL9y6HJ/HKOzPEduNC2e+TQB0HtKa+4u0jvVNU29gYjDhMYmcWIGhgMQRKYcUbD98bBhvcc4GsJnpLpUiu0jXo2Bps2FlGEZJf/qWJ+YyjCCe1C7wPge0hWihEpi/J07yb/as7mC57FicBY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768361531; c=relaxed/simple; bh=DgAhAdepUnjp+k3Df0WJMhod73fO0hqcJptvi1pvuuA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=LmUZQPh5IL4e8aXxIQRyAAdXH8q+glOHFU45WtE0kF0TYm9yW9xbU8Ik9/AutfDai46Thbz6XXjIfsmQg8x0rOFSlL12/NVxoRlZC7zmzSmVVHQpCvK3+yzLxZ+WqnKwXirkIbUHJhqL3xKIcwzcLH3hX0yhx7NcimJnj5zQ7lI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=l+l+odKp; arc=none smtp.client-ip=192.198.163.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="l+l+odKp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1768361529; x=1799897529; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=DgAhAdepUnjp+k3Df0WJMhod73fO0hqcJptvi1pvuuA=; b=l+l+odKpq2dXv93RP/ReCV+txmUQrCC2hMM1qnIvQKUzMw+rUgdifbuV 5Y8MePAnrX8RN8iyVm3QdK2AW78u0+I6BpyM9kXIFdtZPaCL40PX2kkiN 3MmEPICeP8WucNZ4IG/gnl5CHtaaVZcf2z8LSDTHgDHEEfGb6fUyWgDoy BiIcipPIZ/6J+Ui92ZZXRzAZDEstFvdlpHLZwBlI9FFQ9ObaXq7zszge4 20N8kSPj3gCHG21v8PXd2b1KG7DvQmaWxYt7NRdPCPUWkeafHjodiNGHf z1EFNqg+cVNftW6edk4aZ0h+M4O2Ih/0FTC4w+axj7WnUk4dP/q9oJqKK A==; X-CSE-ConnectionGUID: bFabglaCTUiAmDGvfSnq8Q== X-CSE-MsgGUID: QEjXjmriRxKEMBpZX+OEsA== X-IronPort-AV: E=McAfee;i="6800,10657,11670"; a="80306359" X-IronPort-AV: E=Sophos;i="6.21,224,1763452800"; d="scan'208";a="80306359" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jan 2026 19:32:09 -0800 X-CSE-ConnectionGUID: lbfhpFDURfK7rW8hPfkrng== X-CSE-MsgGUID: r0fEaz18RpyK09lrk5Ovlw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,224,1763452800"; d="scan'208";a="235281436" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 13 Jan 2026 19:32:07 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vfrc3-00000000FjQ-35Uq; Wed, 14 Jan 2026 03:32:03 +0000 Date: Wed, 14 Jan 2026 11:31:58 +0800 From: kernel test robot To: David Howells , netdev@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, dhowells@redhat.com, syzbot+6182afad5045e6703b3d@syzkaller.appspotmail.com, Marc Dionne , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-afs@lists.infradead.org, stable@kernel.org, linux-kernel@kernel.org Subject: Re: [PATCH] rxrpc: Fix data-race warning and potential load/store tearing Message-ID: <202601141152.2TfkKMKv-lkp@intel.com> References: <3535584.1768322992@warthog.procyon.org.uk> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3535584.1768322992@warthog.procyon.org.uk> Hi David, kernel test robot noticed the following build warnings: [auto build test WARNING on net/main] [also build test WARNING on net-next/main linus/master v6.19-rc5 next-20260113] [cannot apply to horms-ipvs/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/David-Howells/rxrpc-Fix-data-race-warning-and-potential-load-store-tearing/20260114-005726 base: net/main patch link: https://lore.kernel.org/r/3535584.1768322992%40warthog.procyon.org.uk patch subject: [PATCH] rxrpc: Fix data-race warning and potential load/store tearing config: x86_64-buildonly-randconfig-006-20260114 (https://download.01.org/0day-ci/archive/20260114/202601141152.2TfkKMKv-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601141152.2TfkKMKv-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202601141152.2TfkKMKv-lkp@intel.com/ All warnings (new ones prefixed by >>): >> net/rxrpc/proc.c:305:6: warning: format specifies type 'unsigned long long' but the argument has type 's32' (aka 'int') [-Wformat] 299 | "UDP %-47.47s %-47.47s %3u %4u %5u %6llus %8d %8d\n", | ~~~~~ | %6d 300 | lbuff, 301 | rbuff, 302 | refcount_read(&peer->ref), 303 | peer->cong_ssthresh, 304 | peer->max_data, 305 | (s32)now - (s32)peer->last_tx_at, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +305 net/rxrpc/proc.c 274 275 /* 276 * generate a list of extant virtual peers in /proc/net/rxrpc/peers 277 */ 278 static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 279 { 280 struct rxrpc_peer *peer; 281 time64_t now; 282 char lbuff[50], rbuff[50]; 283 284 if (v == SEQ_START_TOKEN) { 285 seq_puts(seq, 286 "Proto Local Remote Use SST Maxd LastUse RTT RTO\n" 287 ); 288 return 0; 289 } 290 291 peer = list_entry(v, struct rxrpc_peer, hash_link); 292 293 sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 294 295 sprintf(rbuff, "%pISpc", &peer->srx.transport); 296 297 now = ktime_get_seconds(); 298 seq_printf(seq, 299 "UDP %-47.47s %-47.47s %3u %4u %5u %6llus %8d %8d\n", 300 lbuff, 301 rbuff, 302 refcount_read(&peer->ref), 303 peer->cong_ssthresh, 304 peer->max_data, > 305 (s32)now - (s32)peer->last_tx_at, 306 READ_ONCE(peer->recent_srtt_us), 307 READ_ONCE(peer->recent_rto_us)); 308 309 return 0; 310 } 311 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki