r0 = syz_io_uring_setup(0x4e4f, &(0x7f0000001a00), &(0x7f0000ffc000/0x4000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000001a80), &(0x7f0000001ac0))
io_uring_register$IORING_UNREGISTER_EVENTFD(r0, 0x5, 0x0, 0x0)