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| author | Michal Schmidt <mschmidt@redhat.com> | 2017-05-04 16:48:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-14 14:00:21 +0200 |
| commit | 5d8e07740c69fac6ebd6cc0657a41e561e50d124 (patch) | |
| tree | 1536702513e3fde72753b290d900d296722fb446 /net/core/rtnetlink.c | |
| parent | f1906530860104b9c7e1b66302fc2029f6a92461 (diff) | |
rtnetlink: NUL-terminate IFLA_PHYS_PORT_NAME string
[ Upstream commit 77ef033b687c3e030017c94a29bf6ea3aaaef678 ]
IFLA_PHYS_PORT_NAME is a string attribute, so terminate it with \0.
Otherwise libnl3 fails to validate netlink messages with this attribute.
"ip -detail a" assumes too that the attribute is NUL-terminated when
printing it. It often was, due to padding.
I noticed this as libvirtd failing to start on a system with sfc driver
after upgrading it to Linux 4.11, i.e. when sfc added support for
phys_port_name.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/rtnetlink.c')
| -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 b7f9ae7b1c5f..b490af67c6fa 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1059,7 +1059,7 @@ static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) return err; } - if (nla_put(skb, IFLA_PHYS_PORT_NAME, strlen(name), name)) + if (nla_put_string(skb, IFLA_PHYS_PORT_NAME, name)) return -EMSGSIZE; return 0; |