From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 7AD8137DEA2 for ; Mon, 29 Jun 2026 17:33:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782754431; cv=none; b=KA/HnTHYT13UitLGsB5Cz/Ta6pt5BLupWsNmUx19yUTO/L+FCvciyk/TL7BDZmF5uf69jvZ9Q4fmVOTtpnBG+cPazZY8lvkDNxn0CEUj5WB1Xxd80KfabrEFZS+8G75S+rTBLLh+N8QjIyuspxr+n4YjRoiwTTF2csUZtv6lUuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782754431; c=relaxed/simple; bh=HxSu3U1CZFROaKODStGOAG8uBed/YAkhbUowkW47sQU=; h=Date:From:To:Cc:Subject:Message-ID; b=JT7BqQ6BWnmpa2QEP1vcBVFoNxP9dCo50bRYqi08lPnvVCOAa0Zok7mEJDz9nN/nbDSnDH0iyUt7P4AfosPbcHPeWodQh1M+4wtvNEEqWi/nG9RQn1pVfYW7bgaAwEHq89Fgz0DOrsPQTzlXzdIwZ61B/e1/gDsGTTTeNMLwJts= 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=Nm1/k6y2; arc=none smtp.client-ip=198.175.65.20 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="Nm1/k6y2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1782754430; x=1814290430; h=date:from:to:cc:subject:message-id; bh=HxSu3U1CZFROaKODStGOAG8uBed/YAkhbUowkW47sQU=; b=Nm1/k6y2omKl+tzl8IeQQZR12UBR2nOYCStMSOOlNN5MiOw2fBPcxFDg fvtIQ0UDMg0Gbn9bdRRsr/y3r21G+ENs98d+khkQa/sDlPh16Yd5xX2rV ylec1eA1sbn68U1SJ6x+7wG3QrSpRNUWCCypwEbtdcLUY0A9l0SYwD//Y tg4vsoA9vM8bQFbcwmUwBgmvvHJpQeXB1jqgG96amK1PEi3dWO+3HjlR1 nTwaQ6bS63St4WjwFIqScmBvMfTmbUjbbdTARE1KFRbkr0W/uVL4h062B 7IrTX1MPIWw8VjKzsDeg9KzkvaIaCWQNzukGZgC22LCCDBHm+GHHk3V63 A==; X-CSE-ConnectionGUID: LOiJYZxdQGyVOIprgwb59A== X-CSE-MsgGUID: 0o19WBGoRMieRWIHnbxaZA== X-IronPort-AV: E=McAfee;i="6800,10657,11832"; a="83229386" X-IronPort-AV: E=Sophos;i="6.24,232,1774335600"; d="scan'208";a="83229386" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2026 10:33:50 -0700 X-CSE-ConnectionGUID: Em3z1cYXQWec1BU+IA7VNA== X-CSE-MsgGUID: 899Tt6BZSQKqTeDtNObY3g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,232,1774335600"; d="scan'208";a="253928534" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by fmviesa004.fm.intel.com with ESMTP; 29 Jun 2026 10:33:48 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1weFrd-000000007ca-40Nh; Mon, 29 Jun 2026 17:33:45 +0000 Date: Tue, 30 Jun 2026 01:32:49 +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: <202606300158.lMSr2D6Z-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: dc59e4fea9d83f03bad6bddf3fa2e52491777482 commit: 77c50f9147eabcf726f62c73167bb9d9e8621a43 mm: cma: simplify cma_debug_show_areas() date: 11 months ago :::::: branch date: 22 hours ago :::::: commit date: 11 months ago config: sh-randconfig-r062-20260629 (https://download.01.org/0day-ci/archive/20260630/202606300158.lMSr2D6Z-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 16.1.0 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/202606300158.lMSr2D6Z-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