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bh=6dBPtCiZj++yQEUojIUaLLBbVlYTIXmcVSA7FgHeDUU=; b=khTwnRfM16QeIAk4di/b4SA1bYbn9E25MILCGqVLkXD1dpVd+A8/dXeHpVR8ZnO4lu3Fnk sM8ZPub9rN8vPWeLz5znOVOhWJkJlqxhiyeCg9cWhw/wMFjzEs9fA6UXh6SkS4bWPMMlhg kR0OdBXyQ+YpPv+PNp8E/yESGPHN+Jk= ARC-Authentication-Results: i=1; imf05.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=zLLKqDIY; spf=pass (imf05.hostedemail.com: domain of akpm@linux-foundation.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 2DA9860122; Wed, 1 Jul 2026 18:13:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BDE741F000E9; Wed, 1 Jul 2026 18:13:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1782929614; bh=6dBPtCiZj++yQEUojIUaLLBbVlYTIXmcVSA7FgHeDUU=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=zLLKqDIYXDyxhXphbCPWUqPhrV5BydL5HTFgSOGyh7g8SLlRFYJL5mf+3yTtyfhPG DyGWkLQZs23gukUMBv3spfBiis3KFHMGySk/dpcPL666nCVS/fTWRKoMKvDJS93Fn3 9WMsiWgVI1qJfpP4YaJIVR+PKnzrvIF2qtryPaSs= Date: Wed, 1 Jul 2026 11:13:34 -0700 From: Andrew Morton To: Muchun Song Cc: kernel test robot , oe-kbuild-all@lists.linux.dev, Linux Memory Management List Subject: Re: [linux-next:master 1977/2307] mm/hugetlb.c:3095:4: warning: array subscript -1 is below array bounds of 'struct list_head[1]' Message-Id: <20260701111334.ea3759a839d3ada05e042b19@linux-foundation.org> In-Reply-To: References: <202607010945.6lDjBFTU-lkp@intel.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 9F63A10000B X-Stat-Signature: 1iff75e4ac3zzg19q8uoksb1kq6dowpu X-Rspam-User: X-Rspamd-Server: rspam03 X-HE-Tag: 1782929615-104978 X-HE-Meta: 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 mftECJ2y NVbjEejH0+4iAU3ukqzxpf0pFGfsbJD1UItwEfwAUi6UXXEMGIgGf8iC/f/PPtLbmnxYWV3AAsEzQv0jjVe2iK2Nde0TwsRX58XRhMbtuwVnuFo0yD+hglLjwb/thOMxEc4EGz65nk1H6mBT2Q7NnGRjP/b40VuVRBRS0eG7EURjzSS6qPH72FWBt0h0l00joVkyMFnlWG8G2Kp9HZioH/7vKIpUkbFaV1PMgqfiBo5/fJVPLgDr6u6AgKdo+/kZVcMVHvjdwOpzUHsia3+DhaMSrqKgyESGQ/VBISCEQ81hvmt55XEz/NOulYGnZcYHBCJEHyNsYnKyr+S20ZMSYWjDOEEvlJLNgDLw3SEwFvjkPjP0vG9EB1+kFI6lwaqAfypozN1Zg7nMIGpBEQHHF8gWk0XFlpbgPJ1EtNcL64XDAhTtg0nylN9JyJqlYEQoS90ua Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 1 Jul 2026 22:53:28 +0800 Muchun Song wrote: > On Wed, Jul 1, 2026 at 9:37 AM kernel test robot wrote: > > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: be5c93fa674f0fc3c8f359c2143abce6bbb422e6 > > commit: f48ee682d55e3602fcc194cb93b8398f2546e53f [1977/2307] mm/hugetlb: free cross-zone bootmem gigantic pages after allocation > > config: sparc-randconfig-r131-20260701 (https://download.01.org/0day-ci/archive/20260701/202607010945.6lDjBFTU-lkp@intel.com/config) > > compiler: sparc64-linux-gcc (GCC) 8.5.0 Old compiler. > > sparse: v0.6.5-rc1 > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260701/202607010945.6lDjBFTU-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/202607010945.6lDjBFTU-lkp@intel.com/ > > > > All warnings (new ones prefixed by >>): > > > > mm/hugetlb.c: In function 'alloc_bootmem_huge_page': > > >> mm/hugetlb.c:3095:4: warning: array subscript -1 is below array bounds of 'struct list_head[1]' [-Warray-bounds] > > list_add(&m->list, &huge_boot_pages[nid_request]); > > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > It seems like a false positive? I can't reproduce this with sparc gcc-15.2.0