r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000080)='ns/mnt\x00')
r1 = syz_open_procfs$namespace(0x0, &(0x7f0000000000)='ns/ipc\x00')
r2 = dup2(r0, r1)
setns(r2, 0x0)