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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2017-11-09 20:09:28 +0300
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2017-11-09 20:09:28 +0300
commit2e307cba0c56eba45649eb0f0f43b999e64aae94 (patch)
treead7b7966aa420b6afd3da33b02381e54b2d10fc3 /drivers/video/fbdev/au1200fb.c
parentcb6bc3ff59e3ff7a6fba8ca6ee649d532b4e17f2 (diff)
downloadlinux-2e307cba0c56eba45649eb0f0f43b999e64aae94.tar.xz
video: fbdev: au1200fb: Fix a potential double free
If 'fb_alloc_cmap()' fails, 'fbi->pseudo_palette' is freed and an error code is returned by 'au1200fb_init_fbinfo()'. The only caller, 'au1200fb_drv_probe()' goes to an error handling path where resources allocated in 'fb_alloc_cmap()' are freed. This leads to a double free of 'fbi->pseudo_palette'. Fix it by letting the caller free all resources in case of failure in 'au1200fb_init_fbinfo()'. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video/fbdev/au1200fb.c')
-rw-r--r--drivers/video/fbdev/au1200fb.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c
index 5f04b4096c42..a5facc2ad90b 100644
--- a/drivers/video/fbdev/au1200fb.c
+++ b/drivers/video/fbdev/au1200fb.c
@@ -1553,7 +1553,6 @@ static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
print_err("Fail to allocate colormap (%d entries)",
AU1200_LCD_NBR_PALETTE_ENTRIES);
- kfree(fbi->pseudo_palette);
return -EFAULT;
}