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 E0134C4167B for ; Sat, 25 Nov 2023 20:01:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232332AbjKYUA4 (ORCPT ); Sat, 25 Nov 2023 15:00:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229521AbjKYUAp (ORCPT ); Sat, 25 Nov 2023 15:00:45 -0500 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21DD2133 for ; Sat, 25 Nov 2023 12:00:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700942451; x=1732478451; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=mpJPZbnlB++0pfKcK61vyQxNXtYXyj1Pv2g2mZivN6w=; b=Q2cCEwFzV4Y0Ql4knQT69QEVuOaruvr2N/Hk1n1f4nJXuVj0Rpp3GdpI YSKJ5EnmEPOalyqY6sMDpA+NHTB5coc3M0vcl+sxKz5u5eN+SkJ0fVv5d nfb8MJOH9kXYkViMzz0NAQUDQni70Xg8OPmtHOVmDiuD54Q9cXGMdbEXw MK6FDo1SW2sWHPrmMeOS0b4ri4pDZ2FtfW9KnY8JVwa68PaW2i7SlYotX Sq/7eo7yy4hAM/FecbuVkhVza0pWsWHGSNuw6oz8ML36G0rwbs9YCcViD 25o8X9mqwQXLZCCI5pBxDaIDKadnjwZgHOv9SoGNgYy97Ofp92WqjCWao A==; X-IronPort-AV: E=McAfee;i="6600,9927,10905"; a="391398664" X-IronPort-AV: E=Sophos;i="6.04,227,1695711600"; d="scan'208";a="391398664" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Nov 2023 12:00:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10905"; a="891332352" X-IronPort-AV: E=Sophos;i="6.04,227,1695711600"; d="scan'208";a="891332352" Received: from lkp-server01.sh.intel.com (HELO d584ee6ebdcc) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 25 Nov 2023 12:00:46 -0800 Received: from kbuild by d584ee6ebdcc with local (Exim 4.96) (envelope-from ) id 1r6ypY-0004Me-0y; Sat, 25 Nov 2023 20:00:44 +0000 Date: Sun, 26 Nov 2023 04:00:31 +0800 From: kernel test robot To: Rong Tao , Andrew Morton , Catalin Marinas , Florent Revest , Kees Cook , David Hildenbrand , Stefan Roesch , Andy Chiu , Josh Triplett , Joey Gouly , Oleg Nesterov , Miguel Ojeda , Ondrej Mosnacek , linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , rtoax@foxmail.com, rongtao@cestc.cn Subject: Re: [PATCH] prctl: Get private anonymous memory region name Message-ID: <202311260314.iuUprWJb-lkp@intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Rong, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v6.7-rc2 next-20231124] [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/Rong-Tao/prctl-Get-private-anonymous-memory-region-name/20231125-220925 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/tencent_977CBF8E8CA6234A1B740A35655D5D7EAA0A%40qq.com patch subject: [PATCH] prctl: Get private anonymous memory region name config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20231126/202311260314.iuUprWJb-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311260314.iuUprWJb-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/202311260314.iuUprWJb-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/sys.c: In function 'prctl_get_vma': >> kernel/sys.c:2389:35: warning: passing argument 1 of 'anon_vma_name_put' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 2389 | anon_vma_name_put(anon_name); | ^~~~~~~~~ In file included from kernel/sys.c:10: include/linux/mm_inline.h:363:60: note: expected 'struct anon_vma_name *' but argument is of type 'const struct anon_vma_name *' 363 | static inline void anon_vma_name_put(struct anon_vma_name *anon_name) | ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ vim +2389 kernel/sys.c 2361 2362 static int prctl_get_vma(unsigned long opt, unsigned long addr, 2363 unsigned long buf, unsigned long arg) 2364 { 2365 struct mm_struct *mm = current->mm; 2366 const char __user *u_buf; 2367 int error; 2368 2369 switch (opt) { 2370 case PR_GET_VMA_ANON_NAME: 2371 const struct anon_vma_name *anon_name = NULL; 2372 2373 u_buf = (const char __user *)buf; 2374 error = 0; 2375 2376 mmap_read_lock(mm); 2377 anon_name = madvise_get_anon_name(mm, addr); 2378 if (!anon_name) { 2379 mmap_read_unlock(mm); 2380 error = -EFAULT; 2381 break; 2382 } 2383 2384 if (copy_to_user((char __user *)u_buf, anon_name->name, 2385 strlen(anon_name->name) + 1)) 2386 error = -EFAULT; 2387 2388 mmap_read_unlock(mm); > 2389 anon_vma_name_put(anon_name); 2390 break; 2391 default: 2392 error = -EINVAL; 2393 } 2394 return error; 2395 } 2396 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki