From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.24]) (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 1B477266A9; Fri, 13 Oct 2023 21:37:55 +0000 (UTC) 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="Bf6TCj1H" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697233076; x=1728769076; h=date:from:to:cc:subject:message-id:mime-version; bh=/FoRQ79cDIWgwF53iTA4Pe2y9GXP34PgSUiq3j9mhE8=; b=Bf6TCj1H+VKhLfV/VhjqLTzRis5dy7jQeeh4iaiOuYe38LeWIuBVDPFE y77mteThKNjG/8moj5ZJte8xYnVlnWbjsmOdaDVpoIx0Alb6Xc44nVj5M YQeRBhB/8V9svYHM7HQgXOrU6l1W0H7GzRHSTKfCRaNqEF/FBNR84rz7n OPuMET3GUgeEHuezmMcfKM3HZ7LtNNE6fu9Xcpwc3/o9Qqx3bADNtPAy8 w0P2ELQwEB0IQ28sGd9TpJWjc7KRG44wQXkcB5eIsQ26JhzKkyQ4TH44k aPlARXa134XbLcbi9JKhGhsk2LIDK61u8hhkpjanuuscVF4GJOukVEHL5 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10862"; a="388122846" X-IronPort-AV: E=Sophos;i="6.03,223,1694761200"; d="scan'208";a="388122846" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2023 14:37:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10862"; a="758630178" X-IronPort-AV: E=Sophos;i="6.03,223,1694761200"; d="scan'208";a="758630178" Received: from lkp-server02.sh.intel.com (HELO f64821696465) ([10.239.97.151]) by fmsmga007.fm.intel.com with ESMTP; 13 Oct 2023 14:37:51 -0700 Received: from kbuild by f64821696465 with local (Exim 4.96) (envelope-from ) id 1qrPqv-0005QJ-1D; Fri, 13 Oct 2023 21:37:49 +0000 Date: Sat, 14 Oct 2023 05:37:01 +0800 From: kernel test robot To: David Wei Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [isilence:zc/veth 1004/1018] io_uring/zc_rx.c:144:5: warning: no previous prototype for function 'io_zc_rx_create_pool' Message-ID: <202310140530.ALReuETc-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://github.com/isilence/linux zc/veth head: cff8a226d561bc0db814b65ca5d2c97894d4d1cd commit: de471788991400859db2362ac41d6f1d2662820a [1004/1018] io_uring: add ZC buf and pool config: um-allnoconfig (https://download.01.org/0day-ci/archive/20231014/202310140530.ALReuETc-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231014/202310140530.ALReuETc-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/202310140530.ALReuETc-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from io_uring/zc_rx.c:6: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from io_uring/zc_rx.c:6: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from io_uring/zc_rx.c:6: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> io_uring/zc_rx.c:144:5: warning: no previous prototype for function 'io_zc_rx_create_pool' [-Wmissing-prototypes] 144 | int io_zc_rx_create_pool(struct io_ring_ctx *ctx, | ^ io_uring/zc_rx.c:144:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 144 | int io_zc_rx_create_pool(struct io_ring_ctx *ctx, | ^ | static 13 warnings generated. vim +/io_zc_rx_create_pool +144 io_uring/zc_rx.c 143 > 144 int io_zc_rx_create_pool(struct io_ring_ctx *ctx, 145 struct io_zc_rx_ifq *ifq, 146 u16 id) 147 { 148 struct device *dev = netdev2dev(ifq->dev); 149 struct io_mapped_ubuf *imu; 150 struct io_zc_rx_pool *pool; 151 int nr_pages; 152 int ret; 153 154 if (ifq->pool) 155 return -EFAULT; 156 157 if (unlikely(id >= ctx->nr_user_bufs)) 158 return -EFAULT; 159 id = array_index_nospec(id, ctx->nr_user_bufs); 160 imu = ctx->user_bufs[id]; 161 if (imu->ubuf & ~PAGE_MASK || imu->ubuf_end & ~PAGE_MASK) 162 return -EFAULT; 163 164 ret = -ENOMEM; 165 nr_pages = imu->nr_bvecs; 166 pool = kvmalloc(struct_size(pool, freelist, nr_pages), GFP_KERNEL); 167 if (!pool) 168 goto err; 169 170 pool->bufs = kvmalloc_array(nr_pages, sizeof(*pool->bufs), GFP_KERNEL); 171 if (!pool->bufs) 172 goto err_buf; 173 174 ret = io_zc_rx_map_pool(pool, imu, dev); 175 if (ret) 176 goto err_map; 177 178 pool->ifq = ifq; 179 pool->pool_id = id; 180 pool->nr_pages = nr_pages; 181 pool->cache_count = 0; 182 spin_lock_init(&pool->freelist_lock); 183 pool->free_count = nr_pages; 184 ifq->pool = pool; 185 186 return 0; 187 188 err_map: 189 kvfree(pool->bufs); 190 err_buf: 191 kvfree(pool); 192 err: 193 return ret; 194 } 195 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki