r0 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000140)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
mmap(&(0x7f0000ffa000/0x3000)=nil, 0x3000, 0x2, 0x11, r0, 0x0)