diff options
| author | Tom Rix <trix@redhat.com> | 2022-03-05 10:13:46 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-07 12:26:53 +0000 |
| commit | 57d29a2935c9aab0aaef6264bf6a58aad3859e7c (patch) | |
| tree | 14dd865f56e08c9e7d6aa5ea9c15d841c004cb18 /net/core | |
| parent | cd5169841c49dab75ecc3b20b3bd1100395b6909 (diff) | |
| download | linux-57d29a2935c9aab0aaef6264bf6a58aad3859e7c.tar.gz | |
net: rtnetlink: fix error handling in rtnl_fill_statsinfo()
The clang static analyzer reports this issue
rtnetlink.c:5481:2: warning: Undefined or garbage
value returned to caller
return err;
^~~~~~~~~~
There is a function level err variable, in the
list_for_each_entry_rcu block there is a shadow
err. Remove the shadow.
In the same block, the call to nla_nest_start_noflag()
can fail without setting an err. Set the err
to -EMSGSIZE.
Fixes: 216e690631f5 ("net: rtnetlink: rtnl_fill_statsinfo(): Permit non-EMSGSIZE error returns")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/rtnetlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index a66b6761b88b..a759f9e0a847 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -5440,12 +5440,12 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { if (af_ops->fill_stats_af) { struct nlattr *af; - int err; af = nla_nest_start_noflag(skb, af_ops->family); if (!af) { rcu_read_unlock(); + err = -EMSGSIZE; goto nla_put_failure; } err = af_ops->fill_stats_af(skb, dev); |