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 <l...@intel.com>
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
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 }
---
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