r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$sr(0xffffffffffffff9c, &(0x7f00000035c0), 0xe8b02, 0x0)
mmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x0, 0x1f012, r1, 0x0)
setsockopt$inet_tcp_TCP_FASTOPEN_KEY(r0, 0x6, 0x21, &(0x7f0000000000)="43a4852956f08d422f26ecbc68bfb35c", 0x10)