From: Gaosheng Cui <cuigaosheng1@huawei.com>
Date: Wed, 9 Oct 2024 08:28:02 +0000 (+0800)
Subject: media: platform: allegro-dvt: Fix possible memory leak in allocate_buffers_internal()
X-Git-Tag: v5.15.174~557
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=64f72a738864b506ab50b4a6cb3ce3c3e04b71af;p=thirdparty%2Fkernel%2Fstable.git

media: platform: allegro-dvt: Fix possible memory leak in allocate_buffers_internal()

commit 0f514068fbc5d4d189c817adc7c4e32cffdc2e47 upstream.

The buffer in the loop should be released under the exception path,
otherwise there may be a memory leak here.

To mitigate this, free the buffer when allegro_alloc_buffer fails.

Fixes: f20387dfd065 ("media: allegro: add Allegro DVT video IP core driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c
index 14a119b43bca0..881c5bbf61568 100644
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -1431,8 +1431,10 @@ static int allocate_buffers_internal(struct allegro_channel *channel,
 		INIT_LIST_HEAD(&buffer->head);
 
 		err = allegro_alloc_buffer(dev, buffer, size);
-		if (err)
+		if (err) {
+			kfree(buffer);
 			goto err;
+		}
 		list_add(&buffer->head, list);
 	}