| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.16 02/55] rtnetlink: fix VF info size | Date | Mon, 13 Oct 2014 04:24:16 +0200 |
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3.16-stable review patch. If anyone has any objections, please let me know.
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From: Jiri Benc <jbenc@redhat.com>
[ Upstream commit 945a36761fd7877660f630bbdeb4ff9ff80d1935 ]
Commit 1d8faf48c74b8 ("net/core: Add VF link state control") added new attribute to IFLA_VF_INFO group in rtnl_fill_ifinfo but did not adjust size of the allocated memory in if_nlmsg_size/rtnl_vfinfo_size. As the result, we may trigger warnings in rtnl_getlink and similar functions when many VF links are enabled, as the information does not fit into the allocated skb.
Fixes: 1d8faf48c74b8 ("net/core: Add VF link state control") Reported-by: Yulong Pei <ypei@redhat.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/core/rtnetlink.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -799,7 +799,8 @@ static inline int rtnl_vfinfo_size(const (nla_total_size(sizeof(struct ifla_vf_mac)) + nla_total_size(sizeof(struct ifla_vf_vlan)) + nla_total_size(sizeof(struct ifla_vf_spoofchk)) + - nla_total_size(sizeof(struct ifla_vf_rate))); + nla_total_size(sizeof(struct ifla_vf_rate)) + + nla_total_size(sizeof(struct ifla_vf_link_state))); return size; } else return 0;
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