r0 = socket$inet_udp(0x2, 0x2, 0x0)
openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.cpu/syz0\x00', 0x200002, 0x0)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, &(0x7f0000000000)={@multicast1, @dev, @multicast2}, 0xc)
getsockopt$inet_buf(r0, 0x0, 0x29, &(0x7f0000000000)=""/27, &(0x7f00000000c0)=0x1b)