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[2620:137:e000::1:20]) by mx.google.com with ESMTP id v8-20020a50a448000000b0042acba0b85bsi14364090edb.200.2022.05.31.04.20.54; Tue, 31 May 2022 04:21:20 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=gHcxRtGD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242221AbiE3Vt4 (ORCPT + 99 others); Mon, 30 May 2022 17:49:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240644AbiE3Vtz (ORCPT ); Mon, 30 May 2022 17:49:55 -0400 Received: from mail-qk1-x72d.google.com (mail-qk1-x72d.google.com [IPv6:2607:f8b0:4864:20::72d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 927AD53730 for ; Mon, 30 May 2022 14:49:54 -0700 (PDT) Received: by mail-qk1-x72d.google.com with SMTP id m68so240299qkb.9 for ; Mon, 30 May 2022 14:49:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=oyIZLMpN8yM0C+zjTwxWjwcZ2QrcKF6IgeGKdgmBFJY=; b=gHcxRtGDoYeO+1kAyP6pFVBMMe0X3RvUE1GAgq20de6KB30VN8KNhd8+GPYpjxwIY5 KALbPX55/RvHg8AeuuBUC4el4dBrfSm5QYa8H2uW/dP1D7PigbqIlrl084fYKQlgJ10E rjdcV65g8ZK0vPIc/mvl+B3HbQbtfCD3+f8RqOH5FB0hd2DyFYG6EPD3ZckOXOjtf6ql pUU6rLqd+YbMNhBb6sy1J6kxHWO1pUtOc14aHifvdD+NFbpEZh2DjDpvVP8GBhEoaBya 6uhd0jw2PLnFaW5RpzLveGX/SVZd+SWgUM/MWyw4FuAuAxlXPXxk3x9gXFrlIWW27Z5x HguA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=oyIZLMpN8yM0C+zjTwxWjwcZ2QrcKF6IgeGKdgmBFJY=; b=5VPvVWw/0jHPJhZ+ScRQ66Al7xYYU8YWEgc2ZVDlb55KTiSXd+yGyJTasoH8RCFI+0 OFR38f5Y5SJs5ytYrpVVwQmXu/NsDK8ltRNXMFi/MFIqKCr+zXGeOi8TrPlaOY7g3jad y4vXqiaAek4fasLbE47h5tm95v8ftFyz4D7B4V7ipatKQEwQiF9L7Rpaq6ZQqcd4HVjy gOfWTNlMGv3VLrOKjPjQbQF/ZYsKpDYpCjMo6AG2KRpXvaeDEF7zQyVv+CsJyUQ4cvCH yc6Gvg3dMhPZCP7BxFulIOG+PaOB0tHyIkdzaBdPod7UmT/ZBojzxoR9X3axAmNcDAmv Wukw== X-Gm-Message-State: AOAM531tsQMVpfdRnh22dKMNzMAUSdlyt+KIeaLvhC7XzAQMJ/wAQy3H yhtAjbMYXNBpthzwAhB88T+SejOjFKtQ/E7v0rnVGQ== X-Received: by 2002:a37:6883:0:b0:6a3:42ae:e17b with SMTP id d125-20020a376883000000b006a342aee17bmr36933263qkc.59.1653947393598; Mon, 30 May 2022 14:49:53 -0700 (PDT) MIME-Version: 1.0 References: <1653877196-23114-1-git-send-email-baihaowen@meizu.com> In-Reply-To: <1653877196-23114-1-git-send-email-baihaowen@meizu.com> From: Dmitry Baryshkov Date: Tue, 31 May 2022 00:49:42 +0300 Message-ID: Subject: Re: [PATCH] drm/msm/dpu: Fix pointer dereferenced before checking To: Haowen Bai Cc: Rob Clark , Abhinav Kumar , Sean Paul , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 30 May 2022 at 05:20, Haowen Bai wrote: > > The phys_enc->wb_idx is dereferencing before null checking, so move > it after checking. > > Signed-off-by: Haowen Bai > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Reviewed-by: Dmitry Baryshkov -- With best wishes Dmitry