socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000040)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
sendto$unix(r0, 0x0, 0x0, 0x0, 0x0, 0x0)
r2 = dup(r1)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0)
recvmmsg(r2, &(0x7f0000007940)=[{{0x0, 0x0, 0x0}}], 0x500, 0x20000022, 0x0)