r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
r1 = openat$pidfd(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r2 = dup2(r1, r0)
open_tree(r2, &(0x7f0000000140)='\x00', 0x1902)