From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 CB8BD27703 for ; Sat, 23 May 2026 20:01:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779566509; cv=none; b=V2C12Ie6mgB3E/lD+hZBOvRNByPyj72bhVaHof3YJU8t/G6PLOU4+OQTpAzH5EnYkfxoWOvQnxQtq3VNX6aQucq0mCcJgPXQzoKKgkR53unRC2wMiPrxA6VRGdNkFE2PVNt3FZ0sBlEke3MSOCuNFx/JxFfs3podPjLdtwQz0fM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779566509; c=relaxed/simple; bh=yIa2bY/+Hw+ccZZKDLKQ5o2tWvX8Zqa2RmPf6dj8tds=; h=Date:From:To:Cc:Subject:Message-ID; b=PqNv2ay5ONHlL/rdTwIx4bbr3/5JCdM8SjIWjRQUenupuBN0P0OcT406dpubdcgbGbQAK840j8HbPUzZeWYaggE793h9TvDAW+wkUQvg544ViiI9Ii/9If423UQYL6qIHVXLIaa3ZfPxcBT4RhVFzMjvmSpt9It2LGo8lmgPnfw= 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=e+yJClwS; arc=none smtp.client-ip=198.175.65.9 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="e+yJClwS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779566507; x=1811102507; h=date:from:to:cc:subject:message-id; bh=yIa2bY/+Hw+ccZZKDLKQ5o2tWvX8Zqa2RmPf6dj8tds=; b=e+yJClwSQjT+GJAZMkrJp2vNRAic6ciJ6Ax2YabTAHVWPz7ij4a4DCV4 m/DQ1pMD6Z4PUnA+dmQT2QY3ixdqHKeEww1cHPIwNSn/OeuRMmNkfs6RH 7Y4zAJPGKjmR+kuvPE1ijI9Yni7UJykN/GA8nQX68uDFUPjVxn0Y2kJtd M34HhkBRzuyFmaQf28h5cA6IE4MMagtutY+ypWJgDvUYi0Mw0jp9oyA1j gvX9ju5be75Y1kDQe9t2brHXREpnBpzs5MV9rnJ148eTTn8YAybNGMeq5 dCLJA45eAInx6m5rVRUX66dEXmbqRiaps0jVbmKfwNUyoBOO7gSriHJMj g==; X-CSE-ConnectionGUID: RlCUjus8SZKpH0kalOd73A== X-CSE-MsgGUID: +WkSFBikRYGDl/dvgOf1fw== X-IronPort-AV: E=McAfee;i="6800,10657,11795"; a="103131828" X-IronPort-AV: E=Sophos;i="6.24,164,1774335600"; d="scan'208";a="103131828" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 May 2026 13:01:47 -0700 X-CSE-ConnectionGUID: ImJliPkcRxyqxcihYS8qQw== X-CSE-MsgGUID: Q1bqcJHJQzOeNGyEbd4VbQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,164,1774335600"; d="scan'208";a="240379724" Received: from lkp-server01.sh.intel.com (HELO 6ba8523b1a8f) ([10.239.97.150]) by orviesa010.jf.intel.com with ESMTP; 23 May 2026 13:01:45 -0700 Received: from kbuild by 6ba8523b1a8f with local (Exim 4.98.2) (envelope-from ) id 1wQsXW-000000000Jh-3tns; Sat, 23 May 2026 20:01:42 +0000 Date: Sun, 24 May 2026 04:01:37 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Julia Lawall Subject: mm/cma.c:770:24-29: ERROR: iterator variable bound on line 768 cannot be NULL Message-ID: <202605240347.l0pmwezS-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: "Yury Norov (NVIDIA)" CC: Andrew Morton CC: Linux Memory Management List tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: eed108edc1170404bbef9e7d0189d18a3cc354f5 commit: 77c50f9147eabcf726f62c73167bb9d9e8621a43 mm: cma: simplify cma_debug_show_areas() date: 10 months ago :::::: branch date: 4 hours ago :::::: commit date: 10 months ago config: powerpc64-randconfig-r051-20260523 (https://download.01.org/0day-ci/archive/20260524/202605240347.l0pmwezS-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 8.5.0 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 | Fixes: 77c50f9147ea ("mm: cma: simplify cma_debug_show_areas()") | Reported-by: kernel test robot | Reported-by: Julia Lawall | Closes: https://lore.kernel.org/r/202605240347.l0pmwezS-lkp@intel.com/ cocci warnings: (new ones prefixed by >>) >> mm/cma.c:770:24-29: ERROR: iterator variable bound on line 768 cannot be NULL vim +770 mm/cma.c c009da4258f988 Frank van der Linden 2025-02-28 751 dbe43d4d2837da Jaewon Kim 2017-02-24 752 static void cma_debug_show_areas(struct cma *cma) dbe43d4d2837da Jaewon Kim 2017-02-24 753 { 77c50f9147eabc Yury Norov (NVIDIA 2025-07-19 754) unsigned long start, end; 7365ff2c8eef4e Frank van der Linden 2025-02-28 755 unsigned long nr_part; c009da4258f988 Frank van der Linden 2025-02-28 756 unsigned long nbits; c009da4258f988 Frank van der Linden 2025-02-28 757 int r; c009da4258f988 Frank van der Linden 2025-02-28 758 struct cma_memrange *cmr; dbe43d4d2837da Jaewon Kim 2017-02-24 759 0ef7dcac998fef Mike Kravetz 2021-05-04 760 spin_lock_irq(&cma->lock); dbe43d4d2837da Jaewon Kim 2017-02-24 761 pr_info("number of available pages: "); c009da4258f988 Frank van der Linden 2025-02-28 762 for (r = 0; r < cma->nranges; r++) { c009da4258f988 Frank van der Linden 2025-02-28 763 cmr = &cma->ranges[r]; c009da4258f988 Frank van der Linden 2025-02-28 764 c009da4258f988 Frank van der Linden 2025-02-28 765 nbits = cma_bitmap_maxno(cma, cmr); c009da4258f988 Frank van der Linden 2025-02-28 766 c009da4258f988 Frank van der Linden 2025-02-28 767 pr_info("range %d: ", r); 77c50f9147eabc Yury Norov (NVIDIA 2025-07-19 @768) for_each_clear_bitrange(start, end, cmr->bitmap, nbits) { 77c50f9147eabc Yury Norov (NVIDIA 2025-07-19 769) nr_part = (end - start) << cma->order_per_bit; 77c50f9147eabc Yury Norov (NVIDIA 2025-07-19 @770) pr_cont("%s%lu@%lu", start ? "+" : "", nr_part, start); dbe43d4d2837da Jaewon Kim 2017-02-24 771 } c009da4258f988 Frank van der Linden 2025-02-28 772 pr_info("\n"); c009da4258f988 Frank van der Linden 2025-02-28 773 } 7365ff2c8eef4e Frank van der Linden 2025-02-28 774 pr_cont("=> %lu free of %lu total pages\n", cma->available_count, 7365ff2c8eef4e Frank van der Linden 2025-02-28 775 cma->count); 0ef7dcac998fef Mike Kravetz 2021-05-04 776 spin_unlock_irq(&cma->lock); dbe43d4d2837da Jaewon Kim 2017-02-24 777 } dbe43d4d2837da Jaewon Kim 2017-02-24 778 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki