[f2fs-stable:linux-5.4.y 68/304] fs/f2fs/compress.c:276 lz4_decompress_pages() warn: should '((1) << 12) << dic->log_cluster_size' be a 64 bit

[f2fs-stable:linux-5.4.y 68/304] fs/f2fs/compress.c:276 lz4_decompress_pages() warn: should '((1) << 12) << dic->log_cluster_size' be a 64 bit

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git linux-5.4.y
head:   32f28e611d66c134f14ab2a9c4e825899360185c
commit: e0edeff7d744dd471f7264bac4824a8f4e3b613f [68/304] f2fs: support data compression
config: i386-randconfig-m021-20200811 (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 <lkp@intel.com>

smatch warnings:
fs/f2fs/compress.c:276 lz4_decompress_pages() warn: should '((1) << 12) << dic->log_cluster_size' be a 64 bit type?

vim +276 fs/f2fs/compress.c

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

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

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