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tipc: fix shift wrapping bug in map_get() 

[ Upstream commit e2b224abd9 ]

There is a shift wrapping bug in this code so anything thing above
31 will return false.

Fixes: 35c55c9877 ("tipc: add neighbor monitoring framework")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2022-08-31 17:47:56 +03:00 committed by Greg Kroah-Hartman
parent 2ee85ac1b2
commit 22922da737
1 changed files with 1 additions and 1 deletions
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2
net/tipc/monitor.c
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@ -130,7 +130,7 @@ static void map_set(u64 *up_map, int i, unsigned int v)
static int map_get(u64 up_map, int i)
{
return (up_map & (1 << i)) >> i;
return (up_map & (1ULL << i)) >> i;
}
static struct tipc_peer *peer_prev(struct tipc_peer *peer)