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 8645334A790; Tue, 11 Nov 2025 01:42:18 +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=1762825338; cv=none; b=msClpCoCO73FFkriKH1KZqryy4EbTbIVyRkuYQPUU2T37308YHbtomxu9zIxbL+cmDajeXrQZQ8lodJJ22A9QzTHV4CCKZPps140zM0YexfrVxK5/8nXPHFtlH6Xqn9p9VPtqdal8t+sS7lN54xQM9cdPRPjWCteZAQsjaOFkcw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762825338; c=relaxed/simple; bh=qpGs6pJI7KmnothcuDfNPt+Eo9V57CkCHWeZc7xVkiY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iYV1Y8XxsLtb+022WSBgyNdyMOBIng4/bVdyE57BubUy/puJPSu9Am6TbH84ZL+JbFCUu1hB6jhbVbcNt0Zd9+eXBgfQ58jgLtD3CCoNMxE6vgZgJfeTkksNCCCtW//HT7N8fpieaN2p/Zr68PWK9e0ne4HwiJKsTH95OXUn32I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=WddZbDj3; 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="WddZbDj3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26AF1C4CEFB; Tue, 11 Nov 2025 01:42:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1762825338; bh=qpGs6pJI7KmnothcuDfNPt+Eo9V57CkCHWeZc7xVkiY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WddZbDj3DMZmiDFy/HksPiHN37GCwMX4IPfBo3RXJ52f7yu0xL+2zP9kXYQLDPwgv I5StZVzyThYw7wTR0M/1S8paQ34XSNglvk/dfjM0L1C0aGSECUon8zemhRR6ub8uv3 d8IKQJgQ+m5H7FcOrkE09aX9SI50NTwVVHsNGqT0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zsolt Kajtar , Helge Deller , Sasha Levin Subject: [PATCH 6.17 717/849] fbdev: core: Fix ubsan warning in pixel_to_pat Date: Tue, 11 Nov 2025 09:44:47 +0900 Message-ID: <20251111004553.766207014@linuxfoundation.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251111004536.460310036@linuxfoundation.org> References: <20251111004536.460310036@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zsolt Kajtar [ Upstream commit aad1d99beaaf132e2024a52727c24894cdf9474a ] It could be triggered on 32 bit big endian machines at 32 bpp in the pattern realignment. In this case just return early as the result is an identity. Signed-off-by: Zsolt Kajtar Signed-off-by: Helge Deller Signed-off-by: Sasha Levin --- drivers/video/fbdev/core/fb_fillrect.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/video/fbdev/core/fb_fillrect.h b/drivers/video/fbdev/core/fb_fillrect.h index 66042e534de77..f366670a53af8 100644 --- a/drivers/video/fbdev/core/fb_fillrect.h +++ b/drivers/video/fbdev/core/fb_fillrect.h @@ -92,8 +92,7 @@ static unsigned long pixel_to_pat(int bpp, u32 color) pattern = pattern | pattern << bpp; break; default: - pattern = color; - break; + return color; } #ifndef __LITTLE_ENDIAN pattern <<= (BITS_PER_LONG % bpp); -- 2.51.0