If we have LOCKDOWN_TRACEFS, the function bails out - *after* having locked the parent directory and without bothering to undo that. Just check it before tracefs_start_creating()...
Fixes: e24709454c45 "tracefs/eventfs: Add missing lockdown checks" Signed-off-by: Al Viro <[email protected]> --- fs/tracefs/event_inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c index 8705c77a9e75..93c231601c8e 100644 --- a/fs/tracefs/event_inode.c +++ b/fs/tracefs/event_inode.c @@ -757,7 +757,7 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry const struct eventfs_entry *entries, int size, void *data) { - struct dentry *dentry = tracefs_start_creating(name, parent); + struct dentry *dentry; struct eventfs_root_inode *rei; struct eventfs_inode *ei; struct tracefs_inode *ti; @@ -768,6 +768,7 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry if (security_locked_down(LOCKDOWN_TRACEFS)) return NULL; + dentry = tracefs_start_creating(name, parent); if (IS_ERR(dentry)) return ERR_CAST(dentry); -- 2.47.3
