wifi: nl80211: Add checks for nla_nest_start() in nl80211_send_iface()
[ Upstream commit
5cc58b376675981386c6192405fe887cd29c527a ]
As the nla_nest_start() may fail with NULL returned, the return value needs
to be checked.
Fixes:
ce08cd344a00 ("wifi: nl80211: expose link information for interfaces")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221129014211.56558-1-yuancan@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>