linux-kernel - Re: [PATCH 5/8] f2fs: Handle casefolding with Encryption

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Date:   Thu, 5 Dec 2019 09:17:15 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Daniel Rosenberg <drosen@...gle.com>
Cc:     kbuild-all@...ts.01.org, Theodore Ts'o <tytso@....edu>,
        linux-ext4@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Chao Yu <chao@...nel.org>,
        linux-f2fs-devel@...ts.sourceforge.net,
        Eric Biggers <ebiggers@...nel.org>,
        linux-fscrypt@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        kernel-team@...roid.com, Daniel Rosenberg <drosen@...gle.com>
Subject: Re: [PATCH 5/8] f2fs: Handle casefolding with Encryption

Hi Daniel,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on next-20191202 next-20191204]
[cannot apply to ext4/dev f2fs/dev-test v5.4 v5.4-rc8 v5.4-rc7 v5.4]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Daniel-Rosenberg/Support-for-Casefolding-and-Encryption/20191203-131410
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 76bb8b05960c3d1668e6bee7624ed886cbd135ba
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-91-g817270f-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

>> fs/f2fs/dir.c:205:13: sparse: sparse: incorrect type in assignment (different base types) @@    expected int len @@    got restricted __le16 [usertyint len @@
>> fs/f2fs/dir.c:205:13: sparse:    expected int len
   fs/f2fs/dir.c:205:13: sparse:    got restricted __le16 [usertype] name_len
--
>> fs/f2fs/hash.c:90:27: sparse: sparse: incorrect type in assignment (different base types) @@    expected restricted __le32 [usertype] f2fs_hash @@    got __le32 [usertype] f2fs_hash @@
>> fs/f2fs/hash.c:90:27: sparse:    expected restricted __le32 [usertype] f2fs_hash
>> fs/f2fs/hash.c:90:27: sparse:    got unsigned long long
   fs/f2fs/hash.c:133:24: sparse: sparse: incorrect type in return expression (different base types) @@    expected restricted __le32 @@    got e32 @@
   fs/f2fs/hash.c:133:24: sparse:    expected restricted __le32
   fs/f2fs/hash.c:133:24: sparse:    got int
   fs/f2fs/hash.c:141:11: sparse: sparse: incorrect type in assignment (different base types) @@    expected int r @@    got restricted __int r @@
   fs/f2fs/hash.c:141:11: sparse:    expected int r
   fs/f2fs/hash.c:141:11: sparse:    got restricted __le32
   fs/f2fs/hash.c:144:16: sparse: sparse: incorrect type in return expression (different base types) @@    expected restricted __le32 @@    got le32 @@
   fs/f2fs/hash.c:144:16: sparse:    expected restricted __le32
   fs/f2fs/hash.c:144:16: sparse:    got int r

vim +205 fs/f2fs/dir.c

   199	
   200		if (de->hash_code != namehash)
   201			return false;
   202	
   203	#ifdef CONFIG_UNICODE
   204		name = d->filename[bit_pos];
 > 205		len = de->name_len;
   206	
   207		if (sb->s_encoding && needs_casefold(parent)) {
   208			if (cf_str->name) {
   209				struct qstr cf = {.name = cf_str->name,
   210						  .len = cf_str->len};
   211				return !f2fs_ci_compare(parent, &cf, name, len, true);
   212			}
   213			return !f2fs_ci_compare(parent, fname->usr_fname, name, len,
   214						false);
   215		}
   216	#endif
   217		if (fscrypt_match_name(fname, d->filename[bit_pos],
   218					le16_to_cpu(de->name_len)))
   219			return true;
   220		return false;
   221	}
   222	

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