socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000540)={0xffffffffffffffff}) r1 = getpid() sendmmsg$unix(r0, &(0x7f00000010c0)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000ac0)=[@cred={{0x1c, 0x1, 0x2, {r1}}}], 0x20}}], 0x1, 0x0)