From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 965B582871; Wed, 19 Jun 2024 13:04:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718802296; cv=none; b=pX15lDPZuQ6vrPDncGpA7AfBxL1XDbjnUjIhDhPICcTyA6JA3bJ/CZnizmJobVN6/g3VtM6IJvP0YGhXTPSB0JJFubuI5ndMFgRA7+q7w1rTKYC/TQdSjEz1oPdsQtu6pyCF1/ixsqI/BOWK0QGA/++DUQzDPpkZ/T3kEe3dUAY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718802296; c=relaxed/simple; bh=Rv/kd7KxBQSOeK4T9AbgF54XrlaPPHj1VfPy7mBbOVE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AaProD9HiVsZEBP6AUGXQQQYsxI1aaAkljkqkQDqhFuOxCeQ3QBtK9r7ZpDFtIFD3+hcO70xPn11IkWVsYvknOEUTrKTYBEGG/cM9kBxWwSPGfKCXtIs5M3ere2mHmzRFJkJjdJzntLaXYIdnI1r5CdhN7k2SPq96IHffRbTMRY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LQT2ks42; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LQT2ks42" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14530C2BBFC; Wed, 19 Jun 2024 13:04:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718802296; bh=Rv/kd7KxBQSOeK4T9AbgF54XrlaPPHj1VfPy7mBbOVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LQT2ks42OPqUGhMhmZLTnGFj23ZrOWIcim2jPJtnxnvr7ib4O1qMuop/Fc5MTO/Uy aHw3QXhCFVcR9BQLVCUsvyyjhyYMqJCRwmC99EaU4Ol716sLclmysuVOYRnCGHA38Y qrZn5VT+gIppUVzOr+VbH/7rymOj4thKa2XBoC+s= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Amjad Ouled-Ameur , Maxime Ripard , Sasha Levin Subject: [PATCH 6.6 147/267] drm/komeda: check for error-valued pointer Date: Wed, 19 Jun 2024 14:54:58 +0200 Message-ID: <20240619125611.990775294@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240619125606.345939659@linuxfoundation.org> References: <20240619125606.345939659@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Amjad Ouled-Ameur [ Upstream commit b880018edd3a577e50366338194dee9b899947e0 ] komeda_pipeline_get_state() may return an error-valued pointer, thus check the pointer for negative or null value before dereferencing. Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE") Signed-off-by: Amjad Ouled-Ameur Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20240610102056.40406-1-amjad.ouled-ameur@arm.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index f3e744172673c..f4e76b46ca327 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers; pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR_OR_NULL(pipe_st)) return NULL; avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^ -- 2.43.0