From: Ethan Tidmore <ethantidmore06@gmail.com>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
Hans Verkuil <hverkuil+cisco@kernel.org>,
Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>,
Daniel Scally <dan.scally+renesas@ideasonboard.com>,
Biju Das <biju.das.jz@bp.renesas.com>,
Jacopo Mondi <jacopo.mondi@ideasonboard.com>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Ethan Tidmore <ethantidmore06@gmail.com>
Subject: [PATCH] media: rzg2l-cru: Fix error pointer dereference
Date: Mon, 16 Feb 2026 22:10:55 -0600 [thread overview]
Message-ID: <20260217041055.88912-1-ethantidmore06@gmail.com> (raw)
The function media_pad_remote_pad_unique() can return an error pointer
and is not checked. Add check for error pointer.
Detected by Smatch:
drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c:414 rzg2l_cru_get_virtual_channel() error:
'remote_pad' dereferencing possible ERR_PTR()
Fixes: d7d72dae81d5d ("media: rzg2l-cru: Retrieve virtual channel information")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
---
drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index 162e2ace6931..bf7d96841c78 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -411,6 +411,9 @@ static int rzg2l_cru_get_virtual_channel(struct rzg2l_cru_dev *cru)
int ret;
remote_pad = media_pad_remote_pad_unique(&cru->ip.pads[RZG2L_CRU_IP_SINK]);
+ if (IS_ERR(remote_pad))
+ return PTR_ERR(remote_pad);
+
ret = v4l2_subdev_call(cru->ip.remote, pad, get_frame_desc, remote_pad->index, &fd);
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_err(cru->dev, "get_frame_desc failed on IP remote subdev\n");
--
2.53.0
reply other threads:[~2026-02-17 4:11 UTC|newest]
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