From 807a7907114c7c703017ed7a96477a2eeb0d08e0 Mon Sep 17 00:00:00 2001 From: jiangyiwen Date: Fri, 4 Sep 2015 15:44:06 -0700 Subject: ocfs2: set filesytem read-only when ocfs2_delete_entry failed. In ocfs2_rename, it will lead to an inode with two entried(old and new) if ocfs2_delete_entry(old) failed. Thus, filesystem will be inconsistent. The case is described below: ocfs2_rename -> ocfs2_start_trans -> ocfs2_add_entry(new) -> ocfs2_delete_entry(old) -> __ocfs2_journal_access *failed* because of -ENOMEM -> ocfs2_commit_trans So filesystem should be set to read-only at the moment. Signed-off-by: Yiwen Jiang Cc: Joseph Qi Cc: Joel Becker Reviewed-by: Mark Fasheh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/namei.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'fs/ocfs2/namei.c') diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 97c47d71efa7..1c43993e81b0 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -1569,12 +1569,25 @@ static int ocfs2_rename(struct inode *old_dir, status = ocfs2_find_entry(old_dentry->d_name.name, old_dentry->d_name.len, old_dir, &old_entry_lookup); - if (status) + if (status) { + if (!is_journal_aborted(osb->journal->j_journal)) { + ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " + "is not deleted.", + new_dentry->d_name.len, new_dentry->d_name.name, + old_dentry->d_name.len, old_dentry->d_name.name); + } goto bail; + } status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); if (status < 0) { mlog_errno(status); + if (!is_journal_aborted(osb->journal->j_journal)) { + ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " + "is not deleted.", + new_dentry->d_name.len, new_dentry->d_name.name, + old_dentry->d_name.len, old_dentry->d_name.name); + } goto bail; } -- cgit v1.2.1