RE: [PATCH 2/4] ipc/shm.c: check for overflows of shm_tot

[Motohiro Kosaki]

> > shm_tot counts the total number of pages used by shm segments.
> >
> > If SHMALL is ULONG_MAX (or nearly ULONG_MAX), then the number can
> > overflow.  Subsequent calls to shmctl(,SHM_INFO,) would return wrong
> > values for shm_tot.
> >
> > The patch adds a detection for overflows.
> >
> > Signed-off-by: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
> 
> Acked-by: Davidlohr Bueso <davidlohr@xxxxxx>

Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>