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=1794590573; b=G58X1eXMFS40i7wa08goBMvaN5vjoJb2uGkFCK3LMxvjZB6tcm08/khSUvWGVPkpP/Vc z7aQAJJXkG1JrMBCA1VHQEqV2PKTpIHoipdI73qRQIpRrsx1OsM1DKrn1nZqG3ocGytrK R5eQa5mCXZ2AZI5YjO37Jbs0i7XD8Dmdr/1X4T2vMdQKCsNmbYlNObr0RZeO66C7TLb9w FGiGkEHWo6P4Vs8mZhJxoM32X2qq5esKeqRQ5RMbZneDWgoQ/v3hE5SVdnFIZMO8EPZ7/ eBHFwyjgW4gszrykd3Sjl2TkekoOoiRUNJE1s+7x/1t3LK83fGi54LZo8dRZcjqNTqA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794590573; 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=mUT/tdUQs/ooLHW/1ybbI8wAdBPGsEtI+wVIT/b6B6g=; b=xgk2X8PlOfkN/cMxoJC5Kn+mqnHaLOcj3SeM2lKDRIGOtU7LJIJki2YqhbpDoakpkWtV cKQfsScIddBFSYA5NaoElLCGIgM/hrvTxJ7/chuWK8eaxt7hzQu0iwWCsmi2STnRNka7a dEPk3xpevdIz/J1VyOBOOSaxCd0nmtBpza3JwfI34h7I5ZTuvtstB1glCnc6wmm0rMOYr WJZ0gOg6570YEQbum6+K7pJhfWMtpl4lyVJQjbEWka6AQsnPj01NzsOsqWpgIrKM8r0NZ eS8cfQswWo78wHGjhqtSgHZUgJPfvNXjMwexpLIzvNH4SNc4nVbvoliCwRKndoWvI/Q== 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=nZYNMLjY; 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 20743606BD23; Fri, 13 Nov 2026 17:22:53 +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=nZYNMLjY Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA1941F000C4; Fri, 13 Nov 2026 17:22:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794590573; bh=mUT/tdUQs/ooLHW/1ybbI8wAdBPGsEtI+wVIT/b6B6g=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=nZYNMLjYeUaK/UkgpfFvsyBpFwWHJWnY6nDJSqUu6XtMRtN4ZygvtQqgZIX9rG6s3 tPtVxIWcWZ5n4DVAem9nuHc+LF6mhPerZq0k/zAAxbCqbcwHs4T3phkqRhSCppOtwa ukFkaXEezUjuiXqONl0b2nbl/A94r4+ejXS5zRJg= 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 6.18 504/686] iio: adc: ad7192: reject devices without match data Date: Fri, 13 Nov 2026 10:50:37 -0500 Message-ID: <20261113153837.985069139@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153820.902362109@linuxfoundation.org> References: <20261113153820.902362109@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao [ Upstream commit 7f7a119a370ecf6c8d4ab9e9ee0a8cdd77afedd3 ] 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. ad7192_probe() immediately dereferences the returned chip information to initialize the IIO device, 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: c3708c829a06 ("iio: adc: ad7192: Convert from of specific to fwnode property handling") Cc: stable@vger.kernel.org Signed-off-by: Jiale Yao Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/adc/ad7192.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index 8b1664f6b102c..394137a127abb 100644 --- a/drivers/iio/adc/ad7192.c +++ b/drivers/iio/adc/ad7192.c @@ -1402,6 +1402,9 @@ static int ad7192_probe(struct spi_device *spi) st->int_vref_mv = ret == -ENODEV ? avdd_mv : ret / MILLI; 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; indio_dev->info = st->chip_info->info; -- 2.53.0