parseIptunData caused index out of range panic #509
Description
The ip link command dump:
13: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
14: ipip0@NONE: <NOARP,UP,LOWER_UP> mtu 1480 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
15: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/tunnel6 :: brd ::
16: ipip60@NONE: <NOARP,UP,LOWER_UP> mtu 1452 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/tunnel6 :: brd ::
The panic backtrace are:
panic: runtime error: index out of range
github.com/vishvananda/netlink.parseIptunData(0xcc4b40, 0xc000214580, 0xc00028ee00, 0xd, 0x10)
/go/src/github.com/vishvananda/netlink/link_linux.go:2580 +0x2c1
github.com/vishvananda/netlink.LinkDeserialize(0x0, 0xc00028497c, 0x590, 0x113c, 0x9, 0xc00028c700, 0x8, 0x10)
/go/src/github.com/vishvananda/netlink/link_linux.go:1608 +0x1482
github.com/vishvananda/netlink.(*Handle).LinkList(0x1359fd0, 0xbff8b3, 0x9, 0x21a, 0xc000034f70, 0xc000034f00)
/go/src/github.com/vishvananda/netlink/link_linux.go:1813 +0x2e6
github.com/vishvananda/netlink.LinkList(...)
/go/src/github.com/vishvananda/netlink/link_linux.go:1791