tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y head: 95a3867e897abd7811196123f81a119a75aba863 commit: b60b53d4980f879884740e672d83155980d74445 [9997/9999] printk: help pr_debug and pr_devel to optimize out arguments config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 7.5.0 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 git checkout b60b53d4980f879884740e672d83155980d74445 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from arch/arm64/include/asm/hw_breakpoint.h:20:0, from arch/arm64/include/asm/processor.h:33, from arch/arm64/include/asm/spinlock.h:21, from include/linux/spinlock.h:87, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/uapi/linux/timex.h:56, from include/linux/timex.h:56, from include/linux/sched.h:19, from arch/arm64/include/asm/compat.h:25, from arch/arm64/include/asm/stat.h:23, from include/linux/stat.h:5, from include/linux/module.h:10, from fs/9p/vfs_dir.c:26: arch/arm64/include/asm/cpufeature.h: In function 'cpuid_feature_extract_field': arch/arm64/include/asm/cpufeature.h:156:55: warning: signed and unsigned type in conditional expression [-Wsign-compare] cpuid_feature_extract_signed_field(features, field) : ^ In file included from include/linux/blkdev.h:14:0, from include/linux/backing-dev.h:14, from fs/9p/v9fs.h:26, from fs/9p/vfs_dir.c:40: include/linux/pagemap.h: In function 'fault_in_multipages_readable': include/linux/pagemap.h:632:16: warning: variable 'c' set but not used [-Wunused-but-set-variable] volatile char c; ^ In file included from include/linux/blkdev.h:18:0, from include/linux/backing-dev.h:14, from fs/9p/v9fs.h:26, from fs/9p/vfs_dir.c:40: include/linux/bio.h: In function 'bio_next_split': include/linux/bio.h:424:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sectors >= bio_sectors(bio)) ^~ In file included from include/linux/kernel.h:13:0, from include/linux/list.h:8, from include/linux/module.h:9, from fs/9p/vfs_dir.c:26: fs/9p/vfs_dir.c: In function 'v9fs_dir_release': fs/9p/vfs_dir.c:227:32: warning: signed and unsigned type in conditional expression [-Wsign-compare] inode, filp, fid ? fid->fid : -1); ^ include/linux/printk.h:114:17: note: in definition of macro 'no_printk' printk(fmt, ##__VA_ARGS__); ^~~~~~~~~~~ >> fs/9p/vfs_dir.c:226:2: note: in expansion of macro 'p9_debug' p9_debug(P9_DEBUG_VFS, "inode: %p filp: %p fid: %dn", ^~~~~~~~ vim +/p9_debug +226 fs/9p/vfs_dir.c 7751bdb3a095ad Sripathi Kodi 2010-06-04 212 e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 213 e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 214 /** e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 215 * v9fs_dir_release - close a directory e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 216 * @inode: inode of the directory e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 217 * @filp: file pointer to a directory e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 218 * e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 219 */ e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 220 e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 221 int v9fs_dir_release(struct inode *inode, struct file *filp) e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 222 { bd238fb431f319 Latchesar Ionkov 2007-07-10 223 struct p9_fid *fid; e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 224 bd238fb431f319 Latchesar Ionkov 2007-07-10 225 fid = filp->private_data; 5d3851530d6d68 Joe Perches 2011-11-28 @226 p9_debug(P9_DEBUG_VFS, "inode: %p filp: %p fid: %d\n", 62726a7ab3a6a3 jvrao 2010-08-25 227 inode, filp, fid ? fid->fid : -1); 62726a7ab3a6a3 jvrao 2010-08-25 228 if (fid) bd238fb431f319 Latchesar Ionkov 2007-07-10 229 p9_client_clunk(fid); e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 230 return 0; e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 231 } e69e7fe5b0c86b Eric Van Hensbergen 2005-09-09 232 :::::: The code at line 226 was first introduced by commit :::::: 5d3851530d6d68564e4e0ce04d0547d4d106fc72 9p: Reduce object size with CONFIG_NET_9P_DEBUG :::::: TO: Joe Perches <joe@xxxxxxxxxxx> :::::: CC: Eric Van Hensbergen <ericvh@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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