linux-kernel - [PATCH 3/6] Convert v4l2 event to struct

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Message-Id: <20180607145720.22590-4-willy@infradead.org>
Date:   Thu,  7 Jun 2018 07:57:17 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Matthew Wilcox <mawilcox@...rosoft.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: [PATCH 3/6] Convert v4l2 event to struct_size

From: Matthew Wilcox <mawilcox@...rosoft.com>

Signed-off-by: Matthew Wilcox <mawilcox@...rosoft.com>
---
 drivers/media/v4l2-core/v4l2-event.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-event.c b/drivers/media/v4l2-core/v4l2-event.c
index 968c2eb08b5a..127fe6eb91d9 100644
--- a/drivers/media/v4l2-core/v4l2-event.c
+++ b/drivers/media/v4l2-core/v4l2-event.c
@@ -215,8 +215,7 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
 	if (elems < 1)
 		elems = 1;
 
-	sev = kvzalloc(sizeof(*sev) + sizeof(struct v4l2_kevent) * elems,
-		       GFP_KERNEL);
+	sev = kvzalloc(struct_size(sev, events, elems), GFP_KERNEL);
 	if (!sev)
 		return -ENOMEM;
 	for (i = 0; i < elems; i++)
-- 
2.17.0