setgroups(0x2, &(0x7f0000000400)=[0x0, 0x0]) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) getsockopt$sock_buf(r0, 0x1, 0x3b, &(0x7f00000000c0)=""/136, &(0x7f0000000180)=0x88)