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=1792774541; b=iVIQiClPRYE0+qzN3/sVUNQqVnQzzIU7B5nOAbtshtc7Kht4GpYl9G47PWUPIMiNmFnQ KiwQEjciI6Qk9bmtRe4rs1qpq/v4Wyqzhj33XXb/6HnEXwoQ7SE4neq3qqQcP/mBv/TM2 qNBWeNa1b/SlK2FdWAaa/xcN4IhelrZHmE1L+/c1WEXi3nYajpZ64imRk1PjY+gmuAjLQ L0Njp0YF+SWijQAXrGkpPXCfJ2yOb4DeO8LR7XOZkWiQa78wgb+IJawWDiPrsUa7UC20x xZsleM4BkXycteB6XUxH3cB4rnNNv21uR3Ho6q2YocaAiViKDLhr2y+PR7EZ9FfnNfA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774541; 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=B/CdncJzum1aWkjC2I8nIon3w1rn7WMhKBQxbe/o3dk=; b=3U4ESpgXA8fl0tNzsFpm1xI93VHVUcHhcUMvsDM00tj3n6/11DoP8q9drpXwzfWDI2OD 2/SuEKzkDCiXnFBAFPvfEqty0iKBTxJMIMHRsSjxhNpRVAhNugBZjwIZbc4RC8lNBAOUs NBcP7EHW7di579rK6zZR4WP8xRMJfbsU4x8/xcIOHwUHXDidR7PQmdPCUSTYscKukpqEm B6vcWNTY+pyjD3sedQuiILsafvHGrZTb7Xq/aFyZ2LW/w78sZn1qfXcdsK1rbepC7PaZG NV3OfqQFmPlX4be06LsVfeVpYsaIj32TIEn+fnbDX/JLiOTNlDXZD+pBn9f9MJPkavA== 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=0NXYyShr; 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 0CCB7606A31A; Fri, 23 Oct 2026 16:55:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=0NXYyShr Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D5361F01825; Fri, 23 Oct 2026 16:55:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774540; bh=B/CdncJzum1aWkjC2I8nIon3w1rn7WMhKBQxbe/o3dk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0NXYyShrudgqwQ5PZvoqPOxiyxwQzfaPbDJMLQw/tdj6y08oCIXiIPMBA5DFSiW9T sdAz6IRJt69DkXR5LFX0ID90PkENx+S+1I1OFndOVrOoQosPqBQaxF8DgzhIPmgKnf YcDH5iE2kV2XRS3Qyq9/AONIPUeVj07L6oFJ084I= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, kernel test robot , Keith Busch , Dinh Nguyen , Sasha Levin Subject: [PATCH 7.2 048/242] nios2: fix __wsum type degradation in csum_fold() Date: Fri, 23 Oct 2026 18:38:10 +0200 Message-ID: <20261023163714.912930542@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261023163713.816071858@linuxfoundation.org> References: <20261023163713.816071858@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 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Keith Busch [ Upstream commit b963f2345fa20417401c51a69dedb6a58eea33a9 ] csum_fold() shifts a bitwise __wsum type, which sparse reports as "restricted __wsum degrades to integer". Sparse only checks the body of a static inline once something instantiates it, so this went unnoticed until a recent block layer change added the first csum_fold() caller to a file built on this architecture. Force cast to a __u32 for the shift, as the other architectures do. Fixes: eea9507a69d6 ("nios2: Library functions") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202609222053.5gjiJjtb-lkp@intel.com/ Signed-off-by: Keith Busch Signed-off-by: Dinh Nguyen Signed-off-by: Sasha Levin --- arch/nios2/include/asm/checksum.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/nios2/include/asm/checksum.h b/arch/nios2/include/asm/checksum.h index 69004e07a1ba3..b6b415ae17a08 100644 --- a/arch/nios2/include/asm/checksum.h +++ b/arch/nios2/include/asm/checksum.h @@ -27,7 +27,7 @@ static inline __sum16 csum_fold(__wsum sum) "add %0, %0, r8\n" "nor %0, %0, %0\n" : "=r" (sum) - : "r" (sum << 16), "0" (sum) + : "r" ((__force u32)sum << 16), "0" (sum) : "r8"); return (__force __sum16) sum; } -- 2.53.0