r0 = openat$tcp_congestion(0xffffffffffffff9c, &(0x7f0000000000), 0x1, 0x0)
stat(&(0x7f0000000180)='.\x00', &(0x7f0000001c00)={0x0, 0x0, 0x0, 0x0, <r1=>0x0})
setreuid(0x0, r1)
writev(r0, &(0x7f0000000380)=[{&(0x7f0000000140)="b3", 0x1}], 0x1)