[PATCH 01/14] fbdev: hecubafb: fix potential memory leak in hecubafb_probe()

[Abdun Nihaal]

The memory allocated for pagerefs in fb_deferred_io_init() is not freed
on the error path. Fix it by calling fb_deferred_io_cleanup().

Fixes: 56c134f7f1b5 ("fbdev: Track deferred-I/O pages in pageref struct")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Abdun Nihaal <nihaal@xxxxxxxxxxxxxx>
---
 drivers/video/fbdev/hecubafb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/hecubafb.c b/drivers/video/fbdev/hecubafb.c
index 3547d58a29cf..dd2af980f3d8 100644
--- a/drivers/video/fbdev/hecubafb.c
+++ b/drivers/video/fbdev/hecubafb.c
@@ -192,7 +192,9 @@ static int hecubafb_probe(struct platform_device *dev)
 	info->flags = FBINFO_VIRTFB;
 
 	info->fbdefio = &hecubafb_defio;
-	fb_deferred_io_init(info);
+	retval = fb_deferred_io_init(info);
+	if (retval)
+		goto err_fbdefio;
 
 	retval = register_framebuffer(info);
 	if (retval < 0)
@@ -209,6 +211,8 @@ static int hecubafb_probe(struct platform_device *dev)
 
 	return 0;
 err_fbreg:
+	fb_deferred_io_cleanup(info);
+err_fbdefio:
 	framebuffer_release(info);
 err_fballoc:
 	vfree(videomemory);

-- 
2.43.0