idev->cnf.disable_policy and net->ipv6.devconf_all->disable_policy
can be read locklessly. Add appropriate annotations on reads
and writes.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (!rtnl_trylock())
return restart_syscall();
- *valp = val;
+ WRITE_ONCE(*valp, val);
net = (struct net *)ctl->extra2;
if (valp == &net->ipv6.devconf_dflt->disable_policy) {
if (skb_warn_if_lro(skb))
goto drop;
- if (!net->ipv6.devconf_all->disable_policy &&
- (!idev || !idev->cnf.disable_policy) &&
+ if (!READ_ONCE(net->ipv6.devconf_all->disable_policy) &&
+ (!idev || !READ_ONCE(idev->cnf.disable_policy)) &&
!xfrm6_policy_check(NULL, XFRM_POLICY_FWD, skb)) {
__IP6_INC_STATS(net, idev, IPSTATS_MIB_INDISCARDS);
goto drop;
f6i->dst_nocount = true;
if (!anycast &&
- (net->ipv6.devconf_all->disable_policy ||
- idev->cnf.disable_policy))
+ (READ_ONCE(net->ipv6.devconf_all->disable_policy) ||
+ READ_ONCE(idev->cnf.disable_policy)))
f6i->dst_nopolicy = true;
}