Yep, sure~!
2020년 10월 23일 (금) 오후 9:00, Dan Carpenter <[email protected]>님이 작성: > > Hi Daeho, > > url: > https://github.com/0day-ci/linux/commits/Daeho-Jeong/f2fs-add-F2FS_IOC_GET_COMPRESS_OPTION-ioctl/20201022-115947 > base: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git > dev-test > config: x86_64-randconfig-m001-20201022 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <[email protected]> > Reported-by: Dan Carpenter <[email protected]> > > New smatch warnings: > fs/f2fs/file.c:4011 f2fs_ioc_set_compress_option() error: uninitialized > symbol 'ret'. > > Old smatch warnings: > fs/f2fs/f2fs.h:2127 dec_valid_block_count() warn: should 'count << 3' be a 64 > bit type? > fs/f2fs/file.c:2525 f2fs_ioc_gc_range() warn: inconsistent returns > 'sbi->gc_lock'. > fs/f2fs/file.c:2941 f2fs_ioc_flush_device() warn: potential spectre issue > 'sbi->devs' [w] (local cap) > fs/f2fs/file.c:2966 f2fs_ioc_flush_device() warn: inconsistent returns > 'sbi->gc_lock'. > fs/f2fs/file.c:3305 f2fs_precache_extents() error: uninitialized symbol 'err'. > > vim +/ret +4011 fs/f2fs/file.c > > d869d11ac39edb Daeho Jeong 2020-10-22 3969 static int > f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg) > d869d11ac39edb Daeho Jeong 2020-10-22 3970 { > d869d11ac39edb Daeho Jeong 2020-10-22 3971 struct inode *inode = > file_inode(filp); > d869d11ac39edb Daeho Jeong 2020-10-22 3972 struct f2fs_sb_info *sbi = > F2FS_I_SB(inode); > d869d11ac39edb Daeho Jeong 2020-10-22 3973 struct f2fs_comp_option > option; > d869d11ac39edb Daeho Jeong 2020-10-22 3974 int ret; > d869d11ac39edb Daeho Jeong 2020-10-22 3975 > d869d11ac39edb Daeho Jeong 2020-10-22 3976 if > (!f2fs_sb_has_compression(sbi)) > d869d11ac39edb Daeho Jeong 2020-10-22 3977 return -EOPNOTSUPP; > d869d11ac39edb Daeho Jeong 2020-10-22 3978 > d869d11ac39edb Daeho Jeong 2020-10-22 3979 if > (!f2fs_compressed_file(inode)) > d869d11ac39edb Daeho Jeong 2020-10-22 3980 return -EINVAL; > d869d11ac39edb Daeho Jeong 2020-10-22 3981 > d869d11ac39edb Daeho Jeong 2020-10-22 3982 if (!(filp->f_mode & > FMODE_WRITE)) > d869d11ac39edb Daeho Jeong 2020-10-22 3983 return -EBADF; > d869d11ac39edb Daeho Jeong 2020-10-22 3984 > d869d11ac39edb Daeho Jeong 2020-10-22 3985 if (copy_from_user(&option, > (struct f2fs_comp_option __user *)arg, > d869d11ac39edb Daeho Jeong 2020-10-22 3986 > sizeof(option))) > d869d11ac39edb Daeho Jeong 2020-10-22 3987 return -EFAULT; > d869d11ac39edb Daeho Jeong 2020-10-22 3988 > d869d11ac39edb Daeho Jeong 2020-10-22 3989 if (option.log_cluster_size < > MIN_COMPRESS_LOG_SIZE || > d869d11ac39edb Daeho Jeong 2020-10-22 3990 > option.log_cluster_size > MAX_COMPRESS_LOG_SIZE || > d869d11ac39edb Daeho Jeong 2020-10-22 3991 > !f2fs_is_compress_algorithm_ready(option.algorithm)) > d869d11ac39edb Daeho Jeong 2020-10-22 3992 return -EINVAL; > d869d11ac39edb Daeho Jeong 2020-10-22 3993 > d869d11ac39edb Daeho Jeong 2020-10-22 3994 file_start_write(filp); > d869d11ac39edb Daeho Jeong 2020-10-22 3995 inode_lock(inode); > d869d11ac39edb Daeho Jeong 2020-10-22 3996 > d869d11ac39edb Daeho Jeong 2020-10-22 3997 if (f2fs_is_mmap_file(inode) > || > d869d11ac39edb Daeho Jeong 2020-10-22 3998 > get_dirty_pages(inode) || inode->i_size) { > d869d11ac39edb Daeho Jeong 2020-10-22 3999 ret = -EINVAL; > d869d11ac39edb Daeho Jeong 2020-10-22 4000 goto out; > d869d11ac39edb Daeho Jeong 2020-10-22 4001 } > d869d11ac39edb Daeho Jeong 2020-10-22 4002 > d869d11ac39edb Daeho Jeong 2020-10-22 4003 > F2FS_I(inode)->i_compress_algorithm = option.algorithm; > d869d11ac39edb Daeho Jeong 2020-10-22 4004 > F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size; > d869d11ac39edb Daeho Jeong 2020-10-22 4005 F2FS_I(inode)->i_cluster_size > = 1 << option.log_cluster_size; > d869d11ac39edb Daeho Jeong 2020-10-22 4006 > f2fs_mark_inode_dirty_sync(inode, true); > > > "ret" is uninitialized on the success path. > > d869d11ac39edb Daeho Jeong 2020-10-22 4007 out: > d869d11ac39edb Daeho Jeong 2020-10-22 4008 inode_unlock(inode); > d869d11ac39edb Daeho Jeong 2020-10-22 4009 file_end_write(filp); > d869d11ac39edb Daeho Jeong 2020-10-22 4010 > d869d11ac39edb Daeho Jeong 2020-10-22 @4011 return ret; > d869d11ac39edb Daeho Jeong 2020-10-22 4012 } > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/[email protected]
