r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000100), 0xffffffffffffffff)
r2 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000140)={'syz_tun\x00', <r3=>0x0})
sendmsg$ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000280)={0x30, r1, 0x1, 0x0, 0x0, {}, [@ETHTOOL_A_LINKMODES_HEADER={0xc, 0x1, 0x0, 0x1, [@ETHTOOL_A_HEADER_DEV_INDEX={0x8, 0x1, r3}]}, @ETHTOOL_A_LINKMODES_OURS={0x10, 0x3, 0x0, 0x1, [@ETHTOOL_A_BITSET_SIZE={0x8}, @ETHTOOL_A_BITSET_VALUE={0x4}]}]}, 0x30}}, 0x0)