net: Fix data-races around sysctl_devconf_inherit_init_net.
[ Upstream commit a5612ca1 ] While reading sysctl_devconf_inherit_init_net, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 856c395c ("net: introduce a knob to control whether to inherit devconf config") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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