tcp: annotate data-races around tp->linger2

stable inclusion
from stable-v4.19.291
commit db4a513616f904b75e86cc725cf96d5ddeeb6936
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7ZELT


CVE: NA

--------------------------------

[ Upstream commit 9df5335c ]

do_tcp_getsockopt() reads tp->linger2 while another cpu
might change its value.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230719212857.3943972-8-edumazet@google.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>