r0 = syz_io_uring_setup(0x4e0b, &(0x7f0000001780), &(0x7f0000ff9000/0x4000)=nil, &(0x7f0000ffb000/0x1000)=nil, &(0x7f0000001800), &(0x7f0000001840))
io_uring_register$IORING_UNREGISTER_BUFFERS(r0, 0x1, 0x0, 0x8)