From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794064283; b=3ckz1AMkVBJJyCbfqkKO5JArMMSqKx9auTOHPWQfNdNn1m/+L1rv9zDp5+C1tW1XVwqa UBM4os/jJ4lH19FGDn/9kqpl2BNOzxHlSfeLvv0BvmCmbxABivJfTCTOXpvQlBdDOtBL7 wQGyULOEjUL7russyrVz4WxTcKxx4ZOQFErW3zVi8Io0PrYPjtfhAv+uIsDrvA28BBt9e I1Es3YF9/hgrPb4tnapTPO5mg9OLvxNft1LiAy4Up1BN6S3FUvOWPJKUZ05p+6Y2Bc4zp +GNGFBT4ZhHKfW2vrUKvhyS25WMNfBKDUk6uvDKhl1rObYoX/ozt2rwHyxhxFVzxT6A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064283; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=mQ6zgfphrONjo5Iq6K2PcD8gT40kljuYnBt2U4ehSvI=; b=EC670sTnnMqRgOZGGfJoM0maZteJnxxqJcrfyF8K5V8F/hhIi+eFD+g3BY1iqMLJiZz5 68TncCmuO7PXjS9faXRDvF7o1S88aVjHeb1zb5IDflnjcyc9NrUQnzndBW0YEOAf+8hTE IfEDosE8/UhzvyPgY98kdcxLcJqjMF0g9zR3nmz3pYHJnO4s5EtEnihII1esp83kHeXZG f6Fx3RVkvBFYr3X8xKw8eaw5VjVHDkNnbW5N7PaH0uzsVTMwzqD3siSHjLyXHQree8rNM c0a81fwHvzwTYlEXIhaPZeegV7uFjOJ7PP5o1AApSTxLmNj12nN18E8hVQHQQ+7bC9A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="Xq+/lW6X"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C149606C006; Sat, 7 Nov 2026 15:11:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Xq+/lW6X Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD3C41F008A1; Sat, 7 Nov 2026 15:11:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064283; bh=mQ6zgfphrONjo5Iq6K2PcD8gT40kljuYnBt2U4ehSvI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Xq+/lW6XEjHBNZXW9R/fwAs9maCWE6eFKRNh1gn9xV86TUaNGkvPFeCRGhanx9bYV 4xNz2B9Klr7LRF7WgpwkNBKvS6j9Aadr/xHsqy1oA2cPNk/mOQG9slgVyEcSINfQLp nCCjKgrDSRkZSVXUvtRLWO96wGVtfTtNlgTNqbLk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiale Yao , Jonathan Cameron , Sasha Levin Subject: [PATCH 7.3 0340/1257] iio: adc: max11205: reject devices without match data Date: Sat, 7 Nov 2026 08:43:56 -0500 Message-ID: <20261107134948.794557369@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao [ Upstream commit a07b5db685b2a3084240f9b4a9ee44f3b478c6e3 ] SPI driver_override allows a device to bind to this driver without matching either the OF or SPI device ID table. In that case, spi_get_device_match_data() returns NULL. max11205_probe() immediately dereferences the returned chip information to set the IIO device name, causing a NULL pointer dereference. Commit 572a00852635 ("iio: dac: ad5686: missing NULL check on match data") fixed the same driver_override issue in another SPI driver. Reject devices without match data before using the chip information. Fixes: bf3c855be801 ("iio: adc: max11205: simplify with spi_get_device_match_data()") Cc: stable@vger.kernel.org Signed-off-by: Jiale Yao Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/adc/max11205.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/adc/max11205.c b/drivers/iio/adc/max11205.c index 63b6561dcf475..53ac2f4f383e9 100644 --- a/drivers/iio/adc/max11205.c +++ b/drivers/iio/adc/max11205.c @@ -117,6 +117,8 @@ static int max11205_probe(struct spi_device *spi) ad_sd_init(&st->sd, indio_dev, spi, &max11205_sigma_delta_info); st->chip_info = spi_get_device_match_data(spi); + if (!st->chip_info) + return -ENODATA; indio_dev->name = st->chip_info->name; indio_dev->modes = INDIO_DIRECT_MODE; -- 2.53.0