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=1793253914; b=X8MnYrza0o2K617YPA7kgrI/TMc3q1mgxytRtMmW8YaiqAodGoe0lrP/TuETrlNGzqWg yeFgWN+XKmBFss9Kcs6um9mWD3mbz2BrThiNDjAl/S498mIqX2nbAkZfUxGNE8TGls/av LzvIGrQkmmDcnRJPwLu8mQu8iolU6wLcROSimB6C2g4oEbXkTJkUqGi9EDnAf1NI8NKU4 fO6elD8C7UdoyBfsn8/wWA0ozktXhNOZxnR9XWKzz9RsAPCXW5QJOOI8BbtTdmySwujWa n8qTbRL35SxixkCZ7bAY2BPxAQb1+015HXS0pnvlcjqw564t6TBx1U5Z9xRYewmYttg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793253914; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=RhWSRkx7PvODuPDJav0DD8D71ISyb27AyGFn7PsZggU=; b=PmKGShs7uHh9hFl/YnqQBI1HAHH5t18iN4R2BYEjKSOFlmHyYAw6uTSn99VPrHFRJlr4 +Xee693+uxaJSo1/RGPnPY+Py1o774oRHg1LnPxexN3DB9EPjQuGgfKZk0SrfWACwuphP 4XAa2VDQsKf5gdZ5NZtWYmLb00sNNGXVyqG3uq4p/kLWYe8v8u+jEUKa5Q4QrA1LIK9rQ 5Y3VTDXdluwCMhqr+qKd5PS3ZLTXLa4Tn9m0wWJK5TgkZyUPpjmFbEvGW3b8Ttb3+lmlE RUFayLI8efKYm45K9xfTCtadhUfY1A2YE/HwpFP2t4D4YUp3EruofF7jlK8mVKy3lYg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=EOq7Rv7O; 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 CB62B606A31A for ; Thu, 29 Oct 2026 06:05:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=EOq7Rv7O Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC5D51F01828; Thu, 29 Oct 2026 06:05:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793253913; bh=RhWSRkx7PvODuPDJav0DD8D71ISyb27AyGFn7PsZggU=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=EOq7Rv7OGbEPLjwpNiukxGQFe8M5YU4NoBg3eTY82qEYY+UvobPkCDCkHZlsemnRT XWxzlLm/N9F756N+69F27LnDnD0O00N5tUSDkCH+yI8t8KjmU+PSM3TX7B+bcasY5M IO7UWhFlYgCvzh6AaCRWQJ8yYcyyF44GomwnK3EVmKLaX04x28kh3Sin1ilVM5DcAy ARNC/o7CxNUG1PGWJnFYwmnvnuDRJVEx2jxnYZC2LwPSCl4OF6qLB60FSF0lW2x/1x SmJiw5pdirPk2CTdCSjwKK5L27DcLFizGkhrsnybnqoOwQ7yIo4EKgWczcUL9cqSd0 X7HhM4jUDkMgA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH] 9p: reject RERROR/RLERROR with zero errcode Reply-To: sashiko-reviews@lists.linux.dev To: "Dominique Martinet" Cc: v9fs@lists.linux.dev In-Reply-To: <20261029055801.3-1-asmadeus@codewreck.org> References: <20261029055801.3-1-asmadeus@codewreck.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 29 Oct 2026 06:05:12 +0000 X-Mailing-List: v9fs@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Hui Peng >=20 > In p9_check_errors() (net/9p/client.c), a malicious or buggy 9p server > returning P9_RERROR or P9_RLERROR with ecode =3D=3D 0 causes > p9_check_errors() to return 0 (success) while leaving the unparsed > response payload as if the expected reply message type succeeded. >=20 > Map ecode =3D=3D 0 on RERROR / RLERROR to -EPROTO. >=20 > Link: https://lore.kernel.org/all/20260919221734.3708000-1-benquike@gmail= .com/ > Signed-off-by: Hui Peng Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261029055801.3-1-= asmadeus@codewreck.org?part=3D1