fs/ntfs3/attrib.c:70:20: warning: unused function 'attr_must_be_resident'

From: kernel test robot
Date: Fri Nov 05 2021 - 15:32:22 EST

Hi Konstantin,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: fe91c4725aeed35023ba4f7a1e1adfebb6878c23
commit: 6e5be40d32fb1907285277c02e74493ed43d77fe fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile
date: 3 months ago
config: mips-randconfig-r032-20211102 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 264d3b6d4e08401c5b50a85bd76e80b3461d77e6)
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
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6e5be40d32fb1907285277c02e74493ed43d77fe
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6e5be40d32fb1907285277c02e74493ed43d77fe
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ntfs3/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> fs/ntfs3/attrib.c:70:20: warning: unused function 'attr_must_be_resident'
static inline bool attr_must_be_resident(struct ntfs_sb_info
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r2
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 105, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $1
or $0, $2
scd $0, $1
beqz $0, 1b
.set pop
'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips64el-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch block drivers fs include kernel modules.order nr_bisected scripts source usr
--
>> fs/ntfs3/bitmap.c:59:19: warning: unused function 'wnd_bits'
static inline u32 wnd_bits(const struct wnd_bitmap size_t i)
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r2
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/atomic.h", .line = 157, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $0, $1 # atomic_sub
subu $0, $2
sc $0, $1
beqz $0, 1b
.set pop
'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips64el-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch block drivers fs include kernel modules.order nr_bisected scripts source usr


vim +/attr_must_be_resident +70 fs/ntfs3/attrib.c

be71b5cba2e6485 Konstantin Komarov 2021-08-13 64
be71b5cba2e6485 Konstantin Komarov 2021-08-13 65 /*
be71b5cba2e6485 Konstantin Komarov 2021-08-13 66 * attr_must_be_resident
be71b5cba2e6485 Konstantin Komarov 2021-08-13 67 *
be71b5cba2e6485 Konstantin Komarov 2021-08-13 68 * returns true if attribute must be resident
be71b5cba2e6485 Konstantin Komarov 2021-08-13 69 */
be71b5cba2e6485 Konstantin Komarov 2021-08-13 @70 static inline bool attr_must_be_resident(struct ntfs_sb_info *sbi,
be71b5cba2e6485 Konstantin Komarov 2021-08-13 71 enum ATTR_TYPE type)
be71b5cba2e6485 Konstantin Komarov 2021-08-13 72 {
be71b5cba2e6485 Konstantin Komarov 2021-08-13 73 const struct ATTR_DEF_ENTRY *de;
be71b5cba2e6485 Konstantin Komarov 2021-08-13 74
be71b5cba2e6485 Konstantin Komarov 2021-08-13 75 switch (type) {
be71b5cba2e6485 Konstantin Komarov 2021-08-13 76 case ATTR_STD:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 77 case ATTR_NAME:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 78 case ATTR_ID:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 79 case ATTR_LABEL:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 80 case ATTR_VOL_INFO:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 81 case ATTR_ROOT:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 82 case ATTR_EA_INFO:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 83 return true;
be71b5cba2e6485 Konstantin Komarov 2021-08-13 84 default:
be71b5cba2e6485 Konstantin Komarov 2021-08-13 85 de = ntfs_query_def(sbi, type);
be71b5cba2e6485 Konstantin Komarov 2021-08-13 86 if (de && (de->flags & NTFS_ATTR_MUST_BE_RESIDENT))
be71b5cba2e6485 Konstantin Komarov 2021-08-13 87 return true;
be71b5cba2e6485 Konstantin Komarov 2021-08-13 88 return false;
be71b5cba2e6485 Konstantin Komarov 2021-08-13 89 }
be71b5cba2e6485 Konstantin Komarov 2021-08-13 90 }
be71b5cba2e6485 Konstantin Komarov 2021-08-13 91

:::::: The code at line 70 was first introduced by commit
:::::: be71b5cba2e6485e8959da7a9f9a44461a1bb074 fs/ntfs3: Add attrib operations

:::::: TO: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
:::::: CC: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
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