Acked. This will only be relevant in clusters > 1000 nodes, which I must admit I haven't tested yet.
///jon > -----Original Message----- > From: Dan Carpenter [mailto:dan.carpen...@oracle.com] > Sent: Friday, 17 June, 2016 05:22 > To: Jon Maloy > Cc: Ying Xue; David S. Miller; netdev@vger.kernel.org; tipc- > discuss...@lists.sourceforge.net; kernel-janit...@vger.kernel.org > Subject: [patch -next] tipc: potential shift wrapping bug in map_set() > > "up_map" is a u64 type but we're not using the high 32 bits. > > Fixes: 35c55c9877f8 ('tipc: add neighbor monitoring framework') > Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com> > > diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c > index 87d4efe..0d489e8 100644 > --- a/net/tipc/monitor.c > +++ b/net/tipc/monitor.c > @@ -122,8 +122,8 @@ static int dom_size(int peers) > > static void map_set(u64 *up_map, int i, unsigned int v) > { > - *up_map &= ~(1 << i); > - *up_map |= (v << i); > + *up_map &= ~(1ULL << i); > + *up_map |= ((u64)v << i); > } > > static int map_get(u64 up_map, int i)
