static int au1100fb_drv_probe(struct platform_device *dev)
{
	struct au1100fb_device *fbdev = NULL;
	struct resource *regs_res;
	unsigned long page;
	u32 sys_clksrc;

	/* Allocate new device private */
	fbdev = devm_kzalloc(&dev->dev, sizeof(struct au1100fb_device),
			     GFP_KERNEL);
	if (!fbdev) {
		print_err("fail to allocate device private record");
		return -ENOMEM;
	}

	if (au1100fb_setup(fbdev))
		goto failed;

	platform_set_drvdata(dev, (void *)fbdev);

	/* Allocate region for our registers and map them */
	regs_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!regs_res) {
		print_err("fail to retrieve registers resource");
		return -EFAULT;
	}

	au1100fb_fix.mmio_start = regs_res->start;
	au1100fb_fix.mmio_len = resource_size(regs_res);

	if (!devm_request_mem_region(&dev->dev,
				     au1100fb_fix.mmio_start,
				     au1100fb_fix.mmio_len,
				     DRIVER_NAME)) {
		print_err("fail to lock memory region at 0x%08lx",
				au1100fb_fix.mmio_start);
		return -EBUSY;
	}

	fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start);

	print_dbg("Register memory map at %p", fbdev->regs);
	print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len);

	/* Allocate the framebuffer to the maximum screen size * nbr of video buffers */
	fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres *
		  	(fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS;

	fbdev->fb_mem = dmam_alloc_coherent(&dev->dev,
					    PAGE_ALIGN(fbdev->fb_len),
					    &fbdev->fb_phys, GFP_KERNEL);
	if (!fbdev->fb_mem) {
		print_err("fail to allocate frambuffer (size: %dK))",
			  fbdev->fb_len / 1024);
		return -ENOMEM;
	}

	au1100fb_fix.smem_start = fbdev->fb_phys;
	au1100fb_fix.smem_len = fbdev->fb_len;

	/*
	 * Set page reserved so that mmap will work. This is necessary
	 * since we'll be remapping normal memory.
	 */
	for (page = (unsigned long)fbdev->fb_mem;
	     page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len);
	     page += PAGE_SIZE) {
#ifdef CONFIG_DMA_NONCOHERENT
		SetPageReserved(virt_to_page(CAC_ADDR((void *)page)));
#else
		SetPageReserved(virt_to_page(page));
#endif
	}

	print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
	print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);

	/* Setup LCD clock to AUX (48 MHz) */
	sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL);
	au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC);

	/* load the panel info into the var struct */
	au1100fb_var.bits_per_pixel = fbdev->panel->bpp;
	au1100fb_var.xres = fbdev->panel->xres;
	au1100fb_var.xres_virtual = au1100fb_var.xres;
	au1100fb_var.yres = fbdev->panel->yres;
	au1100fb_var.yres_virtual = au1100fb_var.yres;

	fbdev->info.screen_base = fbdev->fb_mem;
	fbdev->info.fbops = &au1100fb_ops;
	fbdev->info.fix = au1100fb_fix;

	fbdev->info.pseudo_palette =
		devm_kzalloc(&dev->dev, sizeof(u32) * 16, GFP_KERNEL);
	if (!fbdev->info.pseudo_palette)
		return -ENOMEM;

	if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
		print_err("Fail to allocate colormap (%d entries)",
			   AU1100_LCD_NBR_PALETTE_ENTRIES);
		return -EFAULT;
	}

	fbdev->info.var = au1100fb_var;

	/* Set h/w registers */
	au1100fb_setmode(fbdev);

	/* Register new framebuffer */
	if (register_framebuffer(&fbdev->info) < 0) {
		print_err("cannot register new framebuffer");
		goto failed;
	}

	return 0;

failed:
	if (fbdev->fb_mem) {
		dma_free_noncoherent(&dev->dev, fbdev->fb_len, fbdev->fb_mem,
				     fbdev->fb_phys);
	}
	if (fbdev->info.cmap.len != 0) {
		fb_dealloc_cmap(&fbdev->info.cmap);
	}

	return -ENODEV;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.