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net: bridge: fix uninitialized variables when BRIDGE_CFM is disabled

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[ Upstream commit 829e050eea ]

Function br_get_link_af_size_filtered() calls br_cfm_{,peer}_mep_count()
that return a count. When BRIDGE_CFM is not enabled these functions
simply return -EOPNOTSUPP but do not modify count parameter and
calling function then works with uninitialized variables.
Modify these inline functions to return zero in count parameter.

Fixes: b6d0425b81 ("bridge: cfm: Netlink Notifications.")
Cc: Henrik Bjoernlund <henrik.bjoernlund@microchip.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ivan Vecera
2021-10-28 17:58:35 +02:00
committed by Greg Kroah-Hartman
parent e176585f05
commit 24c8fd3239
1 changed files with 2 additions and 0 deletions
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2
net/bridge/br_private.h
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@@ -1911,11 +1911,13 @@ static inline int br_cfm_status_fill_info(struct sk_buff *skb,
static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
{
*count = 0;
return -EOPNOTSUPP;
}
static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
{
*count = 0;
return -EOPNOTSUPP;
}
#endif