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=1792774341; b=Sz87sDYw2pLcCukN0veWkEiuaS/NWT18Gmo1GaDtpT7tz13djgU5/L+BZdEO3OTIfG0E UmEKwao9HYlsPh8j2urc0HGj4neNInsdXfk8+F1tm6BuUUUtj/mkk1NPm8rJpif8tTkhH JyIl8Op5t3drmwsrW5zCOOS61yjeceUwLRpQcpEsly64BaVvc1P9pXVB5KDLru9PRL8ao 4F9s6sxlTUg9GXzN4vMro7WXCNmd4ieZo3ah9mJ8bXxZWeJ9SPq9jioEF5ocEFCT0tvpO ZT0+byUXIPJCPru9sTWnokvvFPgG+Ni+VCgvnujXYaNutE3lVCE8FrNe0IIu8DVbmvg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792774341; 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=jPP31pOCEoZUZ9p++sCp+Ro6I3RxuOE4vKvMVGwgUzk=; b=bGgYT0xzkAi6OLT7FIw6l7Alft1mFJIilxQoNPLgiEPU2BKX1fCdTvwgRGMtUnTeeiOr 4phzJIF/yjppOdWZiueTODURyqhu0DKwdIaGRLcI5owf33hZrbHCKpLEIGgbRDyA/cHeh WWw1LNQWlO0uyeLi4P804GmlBlom1Ff9Ecoi288ONgc6/acYWPIANlM8XVb28eY4WVMo/ G2HQR22CjLrJYj3RBT7cqLHaOLm2oaaVo990Ls9LcD9QRWHZM5uM9GP25l5F/RWNOKPiI 5qlMCl2szMhuySq12XoNEeoLavpTHBxJQpLMsV8SYlULYUaMlX9Nt8e6ttjXsJ+cx9w== 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=OgUcSfSo; 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 554A0606A31A; Fri, 23 Oct 2026 16:52:21 +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=OgUcSfSo Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CBC91F01825; Fri, 23 Oct 2026 16:52:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792774341; bh=jPP31pOCEoZUZ9p++sCp+Ro6I3RxuOE4vKvMVGwgUzk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OgUcSfSoqNXfTjNFPunuMBghJl9UFnFiU8zAsBfdDU8QXKk1dNcaVjDpnlfxtFLMF 9PrTmOFqCBCtuecrkLFMRpLmUCThKiUySt5quqC4YB117q+DaJd42tKOz5KRGqy1NR Ln/b0IQJL1DKs8iaIsh+R9Cxlbp/YNSUSxfF2cIQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Gael Blivet , ChenXiaoSong , Namjae Jeon , Sasha Levin Subject: [PATCH 7.2 001/242] ksmbd: exempt FSCTL_PIPE_TRANSCEIVE from the generic file-id lookup Date: Fri, 23 Oct 2026 18:37:23 +0200 Message-ID: <20261023163713.849250995@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: Gael Blivet [ Upstream commit a3bcea7c819a6c69ca937a68631311711bf20e66 ] smb2_ioctl() rejects FSCTL_PIPE_TRANSCEIVE with STATUS_OBJECT_NAME_NOT_FOUND before fsctl_pipe_transceive() runs. RPC pipe IDs live in sess->rpc_handle_list, a separate namespace from the ksmbd_file table the generic ksmbd_lookup_fd_slow() gate searches, so the lookup always misses. Found while testing generic SMB browsing (Finder's "Connect to Server"): every DCE/RPC bind over a named pipe (SRVSVC, WKSSVC, SAMR, LSARPC) failed right after CREATE. Adding FSCTL_PIPE_TRANSCEIVE to the same no_fileid_ioctl exemption as FSCTL_PIPE_WAIT fixes it, confirmed by testing a build with and without the change. Signed-off-by: Gael Blivet Assisted-by: Claude:claude-sonnet-5 Tested-by: ChenXiaoSong Reviewed-by: ChenXiaoSong Signed-off-by: Namjae Jeon Signed-off-by: Sasha Levin --- fs/smb/server/smb2pdu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index 5f82dcd9a0b55..7cc5ca6a12652 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -9634,6 +9634,7 @@ int smb2_ioctl(struct ksmbd_work *work) case FSCTL_QUERY_NETWORK_INTERFACE_INFO: case FSCTL_VALIDATE_NEGOTIATE_INFO: case FSCTL_PIPE_WAIT: + case FSCTL_PIPE_TRANSCEIVE: no_fileid_ioctl = true; break; default: -- 2.53.0