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| author | Amir Goldstein <amir73il@gmail.com> | 2017-09-24 22:19:10 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-10-05 15:53:18 +0200 |
| commit | dc7ab6773e8171e07f16fd0df0c5eea28c899503 (patch) | |
| tree | c02dbf8207d2c36f1bab680fa453428205221b50 /fs | |
| parent | 9f4ec904dbd4eb1a2db10d5e7dc16eae386fe64d (diff) | |
| download | lwn-dc7ab6773e8171e07f16fd0df0c5eea28c899503.tar.gz lwn-dc7ab6773e8171e07f16fd0df0c5eea28c899503.zip | |
ovl: fix dentry leak in ovl_indexdir_cleanup()
index dentry was not released when breaking out of the loop
due to index verification error.
Fixes: 415543d5c64f ("ovl: cleanup bad and stale index entries on mount")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/overlayfs/readdir.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index 62e9b22a2077..0f85ee9c3268 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -988,6 +988,7 @@ int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt, struct path *lowerstack, unsigned int numlower) { int err; + struct dentry *index = NULL; struct inode *dir = dentry->d_inode; struct path path = { .mnt = mnt, .dentry = dentry }; LIST_HEAD(list); @@ -1007,8 +1008,6 @@ int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt, inode_lock_nested(dir, I_MUTEX_PARENT); list_for_each_entry(p, &list, l_node) { - struct dentry *index; - if (p->name[0] == '.') { if (p->len == 1) continue; @@ -1018,6 +1017,7 @@ int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt, index = lookup_one_len(p->name, dentry, p->len); if (IS_ERR(index)) { err = PTR_ERR(index); + index = NULL; break; } err = ovl_verify_index(index, lowerstack, numlower); @@ -1029,7 +1029,9 @@ int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt, break; } dput(index); + index = NULL; } + dput(index); inode_unlock(dir); out: ovl_cache_free(&list); |