On 6/17/25 06:43, Daniel Wagner wrote: > group_cpu_evenly() might have allocated less groups then requested: > > group_cpu_evenly() > __group_cpus_evenly() > alloc_nodes_groups() > # allocated total groups may be less than numgrps when > # active total CPU number is less then numgrps > > In this case, the caller will do an out of bound access because the > caller assumes the masks returned has numgrps. > > Return the number of groups created so the caller can limit the access > range accordingly. > > Acked-by: Thomas Gleixner<tglx@xxxxxxxxxxxxx> > Reviewed-by: Hannes Reinecke<hare@xxxxxxx> > Reviewed-by: Ming Lei<ming.lei@xxxxxxxxxx> > Signed-off-by: Daniel Wagner<wagi@xxxxxxxxxx> > --- Looks good. Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx> -ck
