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| author | Miklos Szeredi <miklos@szeredi.hu> | 2013-09-23 13:21:04 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2013-09-23 13:30:57 +0100 |
| commit | 5ca1db41ecdeb0358b968265fadb755213558a85 (patch) | |
| tree | 870f18958af3186798422a600147bbe480b9d66c /fs | |
| parent | 149ed7f51e279916e7a7a1eef5cec50da67d7cfe (diff) | |
| download | linux-5ca1db41ecdeb0358b968265fadb755213558a85.tar.gz linux-5ca1db41ecdeb0358b968265fadb755213558a85.tar.xz | |
GFS2: fix dentry leaks
We need to dput() the result of d_splice_alias(), unless it is passed to
finish_no_open().
Edited by Steven Whitehouse in order to make it apply to the current
GFS2 git tree, and taking account of a prerequisite patch which hasn't
been applied.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/inode.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 6d7f976aa328..cd58611912f5 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -585,12 +585,14 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, d = d_splice_alias(inode, dentry); error = 0; if (file) { - if (d == NULL) - d = dentry; - if (S_ISREG(inode->i_mode)) - error = finish_open(file, d, gfs2_open_common, opened); - else + if (S_ISREG(inode->i_mode)) { + WARN_ON(d != NULL); + error = finish_open(file, dentry, gfs2_open_common, opened); + } else { error = finish_no_open(file, d); + } + } else { + dput(d); } gfs2_glock_dq_uninit(ghs); return error; @@ -777,8 +779,10 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, error = finish_open(file, dentry, gfs2_open_common, opened); gfs2_glock_dq_uninit(&gh); - if (error) + if (error) { + dput(d); return ERR_PTR(error); + } return d; } @@ -1159,14 +1163,16 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, d = __gfs2_lookup(dir, dentry, file, opened); if (IS_ERR(d)) return PTR_ERR(d); - if (d == NULL) - d = dentry; - if (d->d_inode) { + if (d != NULL) + dentry = d; + if (dentry->d_inode) { if (!(*opened & FILE_OPENED)) - return finish_no_open(file, d); + return finish_no_open(file, dentry); + dput(d); return 0; } + BUG_ON(d != NULL); if (!(flags & O_CREAT)) return -ENOENT; |