socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000480)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = getpgrp(0x0) sendmsg$unix(r0, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000040)=[@cred={{0x1c, 0x1, 0x2, {r2}}}], 0x20}, 0x0) recvmmsg$unix(r1, &(0x7f0000005580)=[{{0x0, 0x0, 0x0}}], 0x1, 0x42, 0x0)