r0 = memfd_create(&(0x7f0000001b80)='(\xc8\xf5\x82j\xca', 0x0)
prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f00000001c0))
read(r0, 0x0, 0x0)