From 003f01c780020daa9a06dea1db495b553a868c29 Mon Sep 17 00:00:00 2001
From: Lucas Stach <l.stach@pengutronix.de>
Date: Mon, 4 Nov 2019 15:58:34 -0800
Subject: [PATCH] Input: synaptics-rmi4 - fix video buffer size
Git-commit: 003f01c780020daa9a06dea1db495b553a868c29
Patch-mainline: v5.4-rc8
References: git-fixes
The video buffer used by the queue is a vb2_v4l2_buffer, not a plain
vb2_buffer. Using the wrong type causes the allocation of the buffer
storage to be too small, causing a out of bounds write when
__init_vb2_v4l2_buffer initializes the buffer.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Fixes: 3a762dbd5347 ("[media] Input: synaptics-rmi4 - add support for F54 diagnostics")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191104114454.10500-1-l.stach@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/input/rmi4/rmi_f54.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/rmi4/rmi_f54.c b/drivers/input/rmi4/rmi_f54.c
index 710b02595486..4841354af0d7 100644
--- a/drivers/input/rmi4/rmi_f54.c
+++ b/drivers/input/rmi4/rmi_f54.c
@@ -359,7 +359,7 @@ static const struct vb2_ops rmi_f54_queue_ops = {
static const struct vb2_queue rmi_f54_queue = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ,
- .buf_struct_size = sizeof(struct vb2_buffer),
+ .buf_struct_size = sizeof(struct vb2_v4l2_buffer),
.ops = &rmi_f54_queue_ops,
.mem_ops = &vb2_vmalloc_memops,
.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC,
--
2.16.4