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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7CE6C761A6 for ; Tue, 4 Apr 2023 14:10:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 39E016B0078; Tue, 4 Apr 2023 10:10:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 326696B007D; Tue, 4 Apr 2023 10:10:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1A0446B007E; Tue, 4 Apr 2023 10:10:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 03E696B0078 for ; Tue, 4 Apr 2023 10:10:47 -0400 (EDT) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id C7C511C6F53 for ; Tue, 4 Apr 2023 14:10:46 +0000 (UTC) X-FDA: 80643894492.16.AEA2844 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by imf22.hostedemail.com (Postfix) with ESMTP id E3B04C001F for ; Tue, 4 Apr 2023 14:10:43 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b="QH2R/7im"; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf22.hostedemail.com: domain of lkp@intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=lkp@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1680617444; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references:dkim-signature; bh=s2wPGDiT6nfyiZL+OjPNiM+9soUNGxImptuwuav82wQ=; b=0X21jmWRijNHWNxrWPmi1KQs4YYgFB3rV4eU1sLtDtl+gQe6tE3YYW7x/xt/XIvbVTAVQH 0xAifJundLkEFYCmgu7BsgnHkQc/1AhYcsbNDedmVyylJRP4tgt8BT7vSBWd+pCZ4F2p52 mUVkUpUd4nEV6yRTMEwEhGn69gnvuDI= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b="QH2R/7im"; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf22.hostedemail.com: domain of lkp@intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=lkp@intel.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1680617444; a=rsa-sha256; cv=none; b=SQNuMY29R0GR/otjZ1dLFVOPBb016GhJOCTEESCCbiMVKGkBpMrLV2OuyPT53qixyPxESP UY5C6EQerEkYcUKKUC8VL2eboDxAjrSW8xRLyQBszSj9jT+9NY3MtAIc0tx4EQU7i4WhZI yeZDnIB9SnApNd/BZomujX00sHP/VrE= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680617443; x=1712153443; h=date:from:to:cc:subject:message-id:mime-version; bh=TqPM0czQCghP4FNBlWIjEOBtKdTF/I8NKZbNaN31xnk=; b=QH2R/7im3C7VaN1l9kRrhEowRbh+irBrzZiv1P/MN6jQ11jywPKH4+17 kmRiJKsU+ZWmh4q56/FdjIBpYAnUfxqj4inncg3YZysyE+HjsTnZ0qibu ZvzmkkEJTFoow1UDeDCGoji2pHbWDPbVA3S4mYuRwGFt5ZD4wtPRV9xbE Dp2/VQ8OA8Bb6ySzwympDAfd6SUYSnGcXqZEJ8xo+6I0HsFZdp6ZR1Ufz S4gi43HF7lAzeWZTQ3qggTI17VLJKCc//4+ZxXpzkKzca2sUuCJKKoTO4 PyirY1+QCyUzj0GJ1dgQ8hYCiG9q+W3oHk9eW0h5Bm8qY5sP4R4c+/ddu w==; X-IronPort-AV: E=McAfee;i="6600,9927,10670"; a="321850041" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="321850041" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2023 07:05:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10670"; a="750932593" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="750932593" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by fmsmga008.fm.intel.com with ESMTP; 04 Apr 2023 07:05:29 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pjhHs-000Pkk-19; Tue, 04 Apr 2023 14:05:28 +0000 Date: Tue, 4 Apr 2023 22:05:08 +0800 From: kernel test robot To: Xiaoyan Li Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Paolo Abeni , Eric Dumazet Subject: [linux-next:master 5025/9010] tcp_mmap.c:211:61: warning: 'lu' may be used uninitialized in this function Message-ID: <202304042104.UFIuevBp-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: E3B04C001F X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: cedr3tig8aghf8qa97spcrs1qzwsorge X-HE-Tag: 1680617443-772275 X-HE-Meta: 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 4dVFtvxz p2NcFnqzxNXMd1TPGcZJC0sDvtsxwuRIMOHmnRvA44xAeVj4EH9VUbpBz3YxxDnQzFNyF7ZogQH7lGfT6CdPNmIjMNf2d3MLdmgJXnGcsrOffqPuKLIZZ/Io0ysB3vVT8L+FiTBqw0bToQF3TvBUuLnHGT1Yuteh7EEQAsUw4rITQqD3RtQylObwCSi2thjWaS36qT8DY8eszPNeOqtQZvYR+YKwXVxZjp/xsI3eP468q+JvQSBKHdkUqRQ57EXEjjHzBqNwc6vrea5A0wV8pGFVoo61G3Nt1mRET0rp1scxjZzovpsLZznhIlQzNRWNmjMgDZD8BEuoLuejLmx+wcjWGKY8dNKsNFj4t54wDPx/EQNLwk05ZcqTWc8fZXOr0cPs24Qsg2I8KvAk= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6a53bda3aaf3de5edeea27d0b1d8781d067640b6 commit: 5c5945dc695c54f2b55a934a10b6c4e220f9c140 [5025/9010] selftests/net: Add SHA256 computation over data sent in tcp_mmap compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce: # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5c5945dc695c54f2b55a934a10b6c4e220f9c140 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 5c5945dc695c54f2b55a934a10b6c4e220f9c140 make O=/tmp/kselftest headers make O=/tmp/kselftest -C tools/testing/selftests If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304042104.UFIuevBp-lkp@intel.com/ Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): tcp_mmap.c: In function 'child_thread': >> tcp_mmap.c:211:61: warning: 'lu' may be used uninitialized in this function [-Wmaybe-uninitialized] 211 | zc.length = min(chunk_size, FILE_SZ - lu); | ^ -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests