| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 078/121] tipc: fix shift wrapping bug in map_get() | Date | Tue, 13 Sep 2022 16:04:29 +0200 |
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From: Dan Carpenter <dan.carpenter@oracle.com>
[ Upstream commit e2b224abd9bf45dcb55750479fc35970725a430b ]
There is a shift wrapping bug in this code so anything thing above 31 will return false.
Fixes: 35c55c9877f8 ("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> --- net/tipc/monitor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c index 2f4d23238a7e3..9618e4429f0fe 100644 --- a/net/tipc/monitor.c +++ b/net/tipc/monitor.c @@ -160,7 +160,7 @@ 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) -- 2.35.1
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