CC: [email protected]
CC: [email protected]
TO: Chao Yu <[email protected]>, Chao Yu <[email protected]>
CC: Jaegeuk Kim <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   07e0887302450a62f51dba72df6afb5fabb23d1c
commit: 4c8ff7095bef64fc47e996a938f7d57f9e077da3 f2fs: support data compression
date:   10 months ago
:::::: branch date: 8 hours ago
:::::: commit date: 10 months ago
config: nios2-randconfig-m031-20201030 (attached as .config)
compiler: nios2-linux-gcc (GCC) 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/compress.c:276 lz4_decompress_pages() warn: should '((1) << 12) << 
dic->log_cluster_size' be a 64 bit type?

Old smatch warnings:
fs/f2fs/compress.c:212 lzo_decompress_pages() warn: should '((1) << 12) << 
dic->log_cluster_size' be a 64 bit type?

vim +276 fs/f2fs/compress.c

4c8ff7095bef64f Chao Yu 2019-11-01  262  
4c8ff7095bef64f Chao Yu 2019-11-01  263  static int lz4_decompress_pages(struct 
decompress_io_ctx *dic)
4c8ff7095bef64f Chao Yu 2019-11-01  264  {
4c8ff7095bef64f Chao Yu 2019-11-01  265         int ret;
4c8ff7095bef64f Chao Yu 2019-11-01  266  
4c8ff7095bef64f Chao Yu 2019-11-01  267         ret = 
LZ4_decompress_safe(dic->cbuf->cdata, dic->rbuf,
4c8ff7095bef64f Chao Yu 2019-11-01  268                                         
        dic->clen, dic->rlen);
4c8ff7095bef64f Chao Yu 2019-11-01  269         if (ret < 0) {
4c8ff7095bef64f Chao Yu 2019-11-01  270                 
printk_ratelimited("%sF2FS-fs (%s): lz4 decompress failed, ret:%d\n",
4c8ff7095bef64f Chao Yu 2019-11-01  271                                 
KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret);
4c8ff7095bef64f Chao Yu 2019-11-01  272                 return -EIO;
4c8ff7095bef64f Chao Yu 2019-11-01  273         }
4c8ff7095bef64f Chao Yu 2019-11-01  274  
4c8ff7095bef64f Chao Yu 2019-11-01  275         if (ret != PAGE_SIZE << 
dic->log_cluster_size) {
4c8ff7095bef64f Chao Yu 2019-11-01 @276                 
printk_ratelimited("%sF2FS-fs (%s): lz4 invalid rlen:%zu, "
4c8ff7095bef64f Chao Yu 2019-11-01  277                                         
"expected:%lu\n", KERN_ERR,
4c8ff7095bef64f Chao Yu 2019-11-01  278                                         
F2FS_I_SB(dic->inode)->sb->s_id,
4c8ff7095bef64f Chao Yu 2019-11-01  279                                         
dic->rlen,
4c8ff7095bef64f Chao Yu 2019-11-01  280                                         
PAGE_SIZE << dic->log_cluster_size);
4c8ff7095bef64f Chao Yu 2019-11-01  281                 return -EIO;
4c8ff7095bef64f Chao Yu 2019-11-01  282         }
4c8ff7095bef64f Chao Yu 2019-11-01  283         return 0;
4c8ff7095bef64f Chao Yu 2019-11-01  284  }
4c8ff7095bef64f Chao Yu 2019-11-01  285  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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