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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-01-03 09:24:28 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-01-04 09:46:27 +0900 |
| commit | c1b75eabec4eddce55ebb078f84481f58272878f (patch) | |
| tree | 9d792a10e129791ac70929190a5614ea4ec91bea | |
| parent | d66d1f76878fcb1e78592fe8aecd13f438d6c0d7 (diff) | |
| download | linux-c1b75eabec4eddce55ebb078f84481f58272878f.tar.bz2 | |
f2fs: avoid null dereference in f2fs_acl_from_disk
This patch resolves Coverity #751303:
>>> CID 753103: Explicit null dereferenced (FORWARD_NULL) Passing null
>>> pointer "value" to function "f2fs_acl_from_disk(char const *, size_t)",
which dereferences it.
[Error path]
- value = NULL;
- retval = 0 by f2fs_getxattr();
- f2fs_acl_from_disk(value:NULL, ...);
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
| -rw-r--r-- | fs/f2fs/acl.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index e95b94945d5f..137af4255da6 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -191,15 +191,14 @@ struct posix_acl *f2fs_get_acl(struct inode *inode, int type) retval = f2fs_getxattr(inode, name_index, "", value, retval); } - if (retval < 0) { - if (retval == -ENODATA) - acl = NULL; - else - acl = ERR_PTR(retval); - } else { + if (retval > 0) acl = f2fs_acl_from_disk(value, retval); - } + else if (retval == -ENODATA) + acl = NULL; + else + acl = ERR_PTR(retval); kfree(value); + if (!IS_ERR(acl)) set_cached_acl(inode, type, acl); |