net: Fix data-races around sysctl_devconf_inherit_init_net.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 23 Aug 2022 17:46:57 +0000 (10:46 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 31 Aug 2022 15:16:44 +0000 (17:16 +0200)
commitb340f83dafbaf821cc2ab5f078a3652c0d09f97a
tree851912b17766944a6f98b58f5c2dcc6a3d0df7a7
parent181bae6dff66401a2fee4345242ed8a760493a62
net: Fix data-races around sysctl_devconf_inherit_init_net.

[ Upstream commit a5612ca10d1aa05624ebe72633e0c8c792970833 ]

While reading sysctl_devconf_inherit_init_net, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its readers.

Fixes: 856c395cfa63 ("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>
include/linux/netdevice.h
net/ipv4/devinet.c
net/ipv6/addrconf.c