[ Upstream commitd380ce7005
] We need to protect the reader reading the sysctl value because the value can be changed concurrently. Fixes:1da177e4c3
("Linux-2.6.12-rc2") Signed-off-by: Jason Xing <kernelxing@tencent.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>