From: Al Viro <v...@zeniv.linux.org.uk> Callers of d_splice_alias(dentry, inode) don't need iput(), neither on success nor on failure. Either the reference to inode is stored in a previously negative dentry, or it's dropped. In either case inode reference the caller used to hold is consumed.
__gfs2_lookup() does iput() in case when d_splice_alias() has failed. Double iput() if we ever hit that. And gfs2_create_inode() ends up not only with double iput(), but with link count dropped to zero - on an inode it has just found in directory. Cc: sta...@vger.kernel.org # v3.14+ Signed-off-by: Al Viro <v...@zeniv.linux.org.uk> Signed-off-by: Steven Whitehouse <swhit...@redhat.com> diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 9317ddc..fc8ac2e 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -626,8 +626,10 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (!IS_ERR(inode)) { d = d_splice_alias(inode, dentry); error = PTR_ERR(d); - if (IS_ERR(d)) + if (IS_ERR(d)) { + inode = ERR_CAST(d); goto fail_gunlock; + } error = 0; if (file) { if (S_ISREG(inode->i_mode)) { @@ -856,7 +858,6 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, d = d_splice_alias(inode, dentry); if (IS_ERR(d)) { - iput(inode); gfs2_glock_dq_uninit(&gh); return d; } -- 1.8.3.1