r0 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
writev(r0, &(0x7f0000000080)=[{&(0x7f0000001140)="202dd2", 0x3}], 0x1)