From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (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 BDB6A18F for ; Sun, 29 Jan 2023 00:06:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674950762; x=1706486762; h=date:from:to:cc:subject:message-id:mime-version; bh=PvqdkR55aPw4e9r4QrV05Jwlze63Gqm3WtjvnfCNAgk=; b=mocMEcuigd5zDjDPlmIN/Pf3/fvNVH6sziq2IwJPikmURooRezYtSv+2 RDqPS3yOeEYbkyLjPeXT4/SOA6LAiM4jeMiKw8kSG8alvpcWOmMIldj8x 2RZ/J4jgzo/xdysWPD4ne8HHlvYZjO7UhUBbV34GVubKZveCroajG44jb nm2CUMYdK0NZU8xGCokRn27ti4TOOIfeATLsiz9CiCUy0szmZ9Y0Py8sz m+Ljo58Uow49LYaCINk0pwDgACxjZpcdbUnvZzFjuGVbCMdo3vhRuITge jhB5YU/BC4ZrJ/BCY61CKficdG7WzED1K+4lmt4dXnCQHhh4uRye/x4po w==; X-IronPort-AV: E=McAfee;i="6500,9779,10604"; a="354660872" X-IronPort-AV: E=Sophos;i="5.97,254,1669104000"; d="scan'208";a="354660872" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2023 16:06:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10604"; a="732266874" X-IronPort-AV: E=Sophos;i="5.97,254,1669104000"; d="scan'208";a="732266874" Received: from lkp-server01.sh.intel.com (HELO ffa7f14d1d0f) ([10.239.97.150]) by fmsmga004.fm.intel.com with ESMTP; 28 Jan 2023 16:05:59 -0800 Received: from kbuild by ffa7f14d1d0f with local (Exim 4.96) (envelope-from ) id 1pLvCp-0001FO-03; Sun, 29 Jan 2023 00:05:59 +0000 Date: Sun, 29 Jan 2023 08:05:28 +0800 From: kernel test robot To: Amir Goldstein Cc: oe-kbuild-all@lists.linux.dev Subject: [amir73il:fan_pre_modify 25/29] fs/namespace.c:491:5: warning: no previous prototype for function '__sb_mnt_want_write_file' Message-ID: <202301290718.bNi98Wyy-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@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/amir73il/linux fan_pre_modify head: 98a5f0e208bb7b3378da3912e93c51bc400b65cf commit: d6522cc6094a6e54cfd1c352c24cc534deb67ff2 [25/29] fanotify: introduce FAN_PRE_ATTRIB permission event config: hexagon-randconfig-r024-20230129 (https://download.01.org/0day-ci/archive/20230129/202301290718.bNi98Wyy-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/amir73il/linux/commit/d6522cc6094a6e54cfd1c352c24cc534deb67ff2 git remote add amir73il https://github.com/amir73il/linux git fetch --no-tags amir73il fan_pre_modify git checkout d6522cc6094a6e54cfd1c352c24cc534deb67ff2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from fs/namespace.c:11: In file included from include/linux/syscalls.h:88: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: 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/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 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] 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' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from fs/namespace.c:11: In file included from include/linux/syscalls.h:88: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: 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/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 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' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from fs/namespace.c:11: In file included from include/linux/syscalls.h:88: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: 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/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __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] __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] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> fs/namespace.c:491:5: warning: no previous prototype for function '__sb_mnt_want_write_file' [-Wmissing-prototypes] int __sb_mnt_want_write_file(struct file *file) ^ fs/namespace.c:491:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __sb_mnt_want_write_file(struct file *file) ^ static 7 warnings generated. vim +/__sb_mnt_want_write_file +491 fs/namespace.c 481 482 /** 483 * __sb_mnt_want_write_file - get write access to a file's mount and sb 484 * @file: the file who's mount on which to take a write 485 * 486 * This is like mnt_want_write, but if the file is already open for writing it 487 * skips incrementing mnt_writers (since the open file already has a reference) 488 * and instead only does the freeze protection and the check for emergency r/o 489 * remounts. This must be paired with mnt_drop_write_file. 490 */ > 491 int __sb_mnt_want_write_file(struct file *file) 492 { 493 int ret; 494 495 sb_start_write(file_inode(file)->i_sb); 496 ret = __mnt_want_write_file(file); 497 if (ret) 498 sb_end_write(file_inode(file)->i_sb); 499 return ret; 500 } 501 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests