From patchwork Fri Oct 6 07:46:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Shiyan X-Patchwork-Id: 13411101 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A159AE92FF4 for ; Fri, 6 Oct 2023 07:47:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230327AbjJFHrN (ORCPT ); Fri, 6 Oct 2023 03:47:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230335AbjJFHrL (ORCPT ); Fri, 6 Oct 2023 03:47:11 -0400 Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15CB9EA for ; Fri, 6 Oct 2023 00:47:11 -0700 (PDT) Received: by mail-lf1-x131.google.com with SMTP id 2adb3069b0e04-503f39d3236so2264936e87.0 for ; Fri, 06 Oct 2023 00:47:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696578429; x=1697183229; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=K20DvfF1G3+DE1e2pKo6QyYsPpd+O8yAeixtZ1Wfa7Q=; b=NhHFeBuEvdL3Vjhq1TTFSw7mcCW+TXzTVMMsv2FdRIrFKR0AAsKYspvPD9CZMnsR1+ jy//Bu0WI9A/GfFqBCs6gg6DjCBLJF2jJfOhXFMHh1O+tGUCuni30wR/NZuEHvQXWaQn eMQzANuAAlnPIrEGqrW/zeuwkLJJSpUA+cIvNpXyjf2RFmAoBaT4cZLRVAgcfynrjAwp aqLint+D/aa7DlkFW2GapO2umkkcyCF0dtVQ84zSrYZHpLQDGK8zwv1MtVOjtCTt+DKe dEEAhCXaTd63Uw8wpwhN89vmp5eGK21sWw5nEIbQQcfLhPg19CY5j10SxAEqAQGN9CI5 iAbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696578429; x=1697183229; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=K20DvfF1G3+DE1e2pKo6QyYsPpd+O8yAeixtZ1Wfa7Q=; b=A39MiMIzkiDvXzcRvf+jHCQOACXNbjHloUQrBwAYXY03SAqSqAiD9xNTzGfib2/ubz iBH3yA1kjAMxTXI5X20Z7bXC0Dx1yan8P2578F96wjQxCT/SZpBGYIkD8qPr4rTf34S0 bB5hjkxRUtAI75+cWPS5eFC1UPVZ53JmhrfGNJPp4JO3otPgt05xE+kHRclyLWBm8y2a 4QkqFeg0YU6cYYA93nsgvjMl3lCjOAx3ij07SIZoPno3uwPEUluqewvIKKJwECV/5I0y VJHvD9UexQXCkuXnm4aMgvytrznR2xn/tLHw/uzmVlY/2u8KNWVIf1hLq77JB5FP+lV7 Trbw== X-Gm-Message-State: AOJu0YyqIMRhpjagKISo028SG1DZ9fV/uAwl7UYJpZDU2HgecfSJMbZ/ XxDTuqwPklq0pkP1EHI222dWQcnXENtpwA== X-Google-Smtp-Source: AGHT+IHms/UFSmLatDkW6FlhSCyxdZNBxpSOqJHCiwIXTyZe0W5OjkV7ytApy2Y6MqmaYa8cO64V/w== X-Received: by 2002:a05:6512:282:b0:502:cc8d:f20a with SMTP id j2-20020a056512028200b00502cc8df20amr6951851lfp.27.1696578428667; Fri, 06 Oct 2023 00:47:08 -0700 (PDT) Received: from localhost.localdomain ([188.243.23.53]) by smtp.gmail.com with ESMTPSA id c28-20020ac244bc000000b005046bf37bebsm204789lfm.57.2023.10.06.00.47.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Oct 2023 00:47:08 -0700 (PDT) From: Alexander Shiyan To: linux-media@vger.kernel.org Cc: Rui Miguel Silva , Laurent Pinchart , Martin Kepplinger , Alexander Shiyan Subject: [PATCH] media: imx: imx-mipi-csis: Fix null pointer dereference when link is not set Date: Fri, 6 Oct 2023 10:46:54 +0300 Message-Id: <20231006074654.11468-1-eagle.alexander923@gmail.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Let's add a check for src_sd before using it. The link may not be set, in which case the call to this function will fail. Signed-off-by: Alexander Shiyan --- drivers/media/platform/nxp/imx-mipi-csis.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c index 5f93712bf485..df5a159b2d39 100644 --- a/drivers/media/platform/nxp/imx-mipi-csis.c +++ b/drivers/media/platform/nxp/imx-mipi-csis.c @@ -595,6 +595,9 @@ static int mipi_csis_calculate_params(struct mipi_csis_device *csis, s64 link_freq; u32 lane_rate; + if (!csis->src_sd) + return -EINVAL; + /* Calculate the line rate from the pixel rate. */ link_freq = v4l2_get_link_freq(csis->src_sd->ctrl_handler, csis_fmt->width,