r0 = openat$tcp_congestion(0xffffffffffffff9c, &(0x7f00000000c0), 0x1, 0x0)
pwrite64(r0, &(0x7f0000001580)="b6", 0x1, 0x0)
openat$tcp_congestion(0xffffffffffffff9c, &(0x7f00000000c0), 0x1, 0x0)
copy_file_range(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0)