From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 24 Aug 2025 13:14:55 +0000 (-0400)
Subject: iio: light: as73211: Ensure buffer holes are zeroed
X-Git-Tag: v6.1.149~35
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83f14c4ca1ad78fcfb3e0de07d6d8a0c59550fc2;p=thirdparty%2Fkernel%2Fstable.git

iio: light: as73211: Ensure buffer holes are zeroed

[ Upstream commit 433b99e922943efdfd62b9a8e3ad1604838181f2 ]

Given that the buffer is copied to a kfifo that ultimately user space
can read, ensure we zero it.

Fixes: 403e5586b52e ("iio: light: as73211: New driver")
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250802164436.515988-2-jic23@kernel.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c
index 895b0c9c6d1d3..5f943705ce8d0 100644
--- a/drivers/iio/light/as73211.c
+++ b/drivers/iio/light/as73211.c
@@ -573,7 +573,7 @@ static irqreturn_t as73211_trigger_handler(int irq __always_unused, void *p)
 	struct {
 		__le16 chan[4];
 		s64 ts __aligned(8);
-	} scan;
+	} scan = { };
 	int data_result, ret;
 
 	mutex_lock(&data->mutex);