On Thu, Jun 28, 2018 at 7:40 PM, Jan Kara <jack@xxxxxxx> wrote: > When an inode is tagged with a tree, tag_chunk() checks whether there is > audit_tree_group mark attached to the inode and adds one if not. However > nothing protects another tag_chunk() to add the mark between we've > checked and try to add the fsnotify mark thus resulting in an error from > fsnotify_add_mark() and consequently an ENOSPC error from tag_chunk(). > > Fix the problem by holding mark_mutex over the whole check-insert code > sequence. > > Signed-off-by: Jan Kara <jack@xxxxxxx> > --- Never dived into the audit_tree code, but this looks sane. Thanks, Amir.
