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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull vfs fixes from Al Viro.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  gfs2_meta: ->mount() can get NULL dev_name
  ecryptfs_rename(): verify that lower dentries are still OK after lock_rename()
  cachefiles: fix the race between cachefiles_bury_object() and rmdir(2)
This commit is contained in:
Linus Torvalds 2018-10-24 17:24:04 +01:00
parent deba28b12b 3df629d873
commit 6b609e3b00
2 changed files with 12 additions and 4 deletions
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13
fs/ecryptfs/inode.c
View File

@ -593,11 +593,16 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
lower_new_dir_dentry = dget_parent(lower_new_dentry);
target_inode = d_inode(new_dentry);
trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
/* source should not be ancestor of target */
if (trap == lower_old_dentry) {
rc = -EINVAL;
rc = -EINVAL;
if (lower_old_dentry->d_parent != lower_old_dir_dentry)
goto out_lock;
if (lower_new_dentry->d_parent != lower_new_dir_dentry)
goto out_lock;
if (d_unhashed(lower_old_dentry) || d_unhashed(lower_new_dentry))
goto out_lock;
/* source should not be ancestor of target */
if (trap == lower_old_dentry)
goto out_lock;
}
/* target should not be ancestor of source */
if (trap == lower_new_dentry) {
rc = -ENOTEMPTY;

3
fs/gfs2/ops_fstype.c
View File

@ -1333,6 +1333,9 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type,
struct path path;
int error;
if (!dev_name || !*dev_name)
return ERR_PTR(-EINVAL);
error = kern_path(dev_name, LOOKUP_FOLLOW, &path);
if (error) {
pr_warn("path_lookup on %s returned error %d\n",