r0 = creat(&(0x7f00000001c0)='./file1\x00', 0x0)
r1 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)
dup2(r1, r0)
write$binfmt_elf64(r0, &(0x7f0000000540)=ANY=[], 0xfdef)