From e08c30efda21ef4c0ec084a3a9581c220b442ba9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 27 Oct 2023 15:04:56 +0300 Subject: [PATCH] fbdev: imsttfb: fix double free in probe() The init_imstt() function calls framebuffer_release() on error and then the probe() function calls it again. It should only be done in probe. Fixes: 518ecb6a209f ("fbdev: imsttfb: Fix error path of imsttfb_probe()") Signed-off-by: Dan Carpenter Signed-off-by: Helge Deller --- drivers/video/fbdev/imsttfb.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/video/fbdev/imsttfb.c b/drivers/video/fbdev/imsttfb.c index e7e03e920729..acb943f85700 100644 --- a/drivers/video/fbdev/imsttfb.c +++ b/drivers/video/fbdev/imsttfb.c @@ -1421,7 +1421,6 @@ static int init_imstt(struct fb_info *info) if ((info->var.xres * info->var.yres) * (info->var.bits_per_pixel >> 3) > info->fix.smem_len || !(compute_imstt_regvals(par, info->var.xres, info->var.yres))) { printk("imsttfb: %ux%ux%u not supported\n", info->var.xres, info->var.yres, info->var.bits_per_pixel); - framebuffer_release(info); return -ENODEV; } @@ -1453,14 +1452,11 @@ static int init_imstt(struct fb_info *info) FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_YPAN; - if (fb_alloc_cmap(&info->cmap, 0, 0)) { - framebuffer_release(info); + if (fb_alloc_cmap(&info->cmap, 0, 0)) return -ENODEV; - } if (register_framebuffer(info) < 0) { fb_dealloc_cmap(&info->cmap); - framebuffer_release(info); return -ENODEV; }