r0 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
r1 = dup2(r0, r0)
ioctl$FIONREAD(r1, 0x8901, &(0x7f0000001a00))
migrate_pages(0x0, 0x4, &(0x7f0000000040)=0x7, &(0x7f0000000080)=0x9)