r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
writev(r0, &(0x7f0000001680)=[{&(0x7f0000000180)='E', 0x1}], 0x1)
readv(r0, &(0x7f0000000100)=[{&(0x7f0000000000)=""/102, 0x66}], 0x1)