diff options
| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-12-01 06:03:06 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-12-06 12:59:06 -0800 |
| commit | f7fce74e387e0563e5a165704664aa5ee8b2f48b (patch) | |
| tree | 7c80f4ec69bb2fef3ad8513d3c9d83c6bd2035e2 /net/ipv4/devinet.c | |
| parent | __in_dev_get_rtnl() can use rtnl_dereference() (diff) | |
| download | linux-dev-f7fce74e387e0563e5a165704664aa5ee8b2f48b.tar.xz linux-dev-f7fce74e387e0563e5a165704664aa5ee8b2f48b.zip | |
net: kill an RCU warning in inet_fill_link_af()
commits 9f0f7272 (ipv4: AF_INET link address family) and cf7afbfeb8c
(rtnl: make link af-specific updates atomic) used incorrect
__in_dev_get_rcu() in RTNL protected contexts, triggering PROVE_RCU
warnings.
Switch to __in_dev_get_rtnl(), wich is more appropriate, since we hold
RTNL.
Based on a report and initial patch from Amerigo Wang.
Reported-by: Amerigo Wang <amwang@redhat.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Graf <tgraf@infradead.org>
Reviewed-by: WANG Cong <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index d9f71bae45c4..3b067704ab38 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1258,7 +1258,7 @@ errout: static size_t inet_get_link_af_size(const struct net_device *dev) { - struct in_device *in_dev = __in_dev_get_rcu(dev); + struct in_device *in_dev = __in_dev_get_rtnl(dev); if (!in_dev) return 0; @@ -1268,7 +1268,7 @@ static size_t inet_get_link_af_size(const struct net_device *dev) static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev) { - struct in_device *in_dev = __in_dev_get_rcu(dev); + struct in_device *in_dev = __in_dev_get_rtnl(dev); struct nlattr *nla; int i; @@ -1295,7 +1295,7 @@ static int inet_validate_link_af(const struct net_device *dev, struct nlattr *a, *tb[IFLA_INET_MAX+1]; int err, rem; - if (dev && !__in_dev_get_rcu(dev)) + if (dev && !__in_dev_get_rtnl(dev)) return -EAFNOSUPPORT; err = nla_parse_nested(tb, IFLA_INET_MAX, nla, inet_af_policy); @@ -1319,7 +1319,7 @@ static int inet_validate_link_af(const struct net_device *dev, static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla) { - struct in_device *in_dev = __in_dev_get_rcu(dev); + struct in_device *in_dev = __in_dev_get_rtnl(dev); struct nlattr *a, *tb[IFLA_INET_MAX+1]; int rem; |