From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11F7AC83022 for ; Tue, 27 Oct 2020 14:52:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D838420732 for ; Tue, 27 Oct 2020 14:52:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603810355; bh=V7dREi8fC+dA9++ovT36KVgbZ66sB5aTseBMqv1pjpo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=C1s8tcMIYTo+GeBKf8UolwadniJEn+fXC80GP/rGJucvhLATHWgkrlzW7fFx6bNHt +h1IQsclHhlOEAFPyjWvsB1BwsMfTjsaO3NKOJBTBuPYAD7hokwjSI/duCkz+76+nt u132T5cxPKVw3JGRX0l6xjcUNgmytP4yqvQ5s2io= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1766366AbgJ0Os0 (ORCPT ); Tue, 27 Oct 2020 10:48:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:48432 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1766346AbgJ0OsV (ORCPT ); Tue, 27 Oct 2020 10:48:21 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E7F162222C; Tue, 27 Oct 2020 14:48:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603810100; bh=V7dREi8fC+dA9++ovT36KVgbZ66sB5aTseBMqv1pjpo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FRlqM4xT1MfTdUgTNTjyrflfkvVCVEplEN42J/5BdQr9QrYycsCtie2m0G1TFwsvw z54WAS6z+xRQt9Ui7cMsEineAxN6cEYy6ZOKIjrZScv24iGZ22Hsnr2qePyw6Qx9/l YbsdbS+/rZk6fGXnas2Ho/x5H8ELCmD1qQlNu5ig= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Robin van der Gracht , Oleksij Rempel , Pengutronix Kernel Team , Oliver Hartkopp , Marc Kleine-Budde , Cong Wang , syzbot+3f3837e61a48d32b495f@syzkaller.appspotmail.com Subject: [PATCH 5.8 021/633] can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt Date: Tue, 27 Oct 2020 14:46:04 +0100 Message-Id: <20201027135523.682289586@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135522.655719020@linuxfoundation.org> References: <20201027135522.655719020@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Cong Wang [ Upstream commit e009f95b1543e26606dca2f7e6e9f0f9174538e5 ] This fixes an uninit-value warning: BUG: KMSAN: uninit-value in can_receive+0x26b/0x630 net/can/af_can.c:650 Reported-and-tested-by: syzbot+3f3837e61a48d32b495f@syzkaller.appspotmail.com Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") Cc: Robin van der Gracht Cc: Oleksij Rempel Cc: Pengutronix Kernel Team Cc: Oliver Hartkopp Cc: Marc Kleine-Budde Signed-off-by: Cong Wang Link: https://lore.kernel.org/r/20201008061821.24663-1-xiyou.wangcong@gmail.com Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- net/can/j1939/transport.c | 1 + 1 file changed, 1 insertion(+) --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -580,6 +580,7 @@ sk_buff *j1939_tp_tx_dat_new(struct j193 skb->dev = priv->ndev; can_skb_reserve(skb); can_skb_prv(skb)->ifindex = priv->ndev->ifindex; + can_skb_prv(skb)->skbcnt = 0; /* reserve CAN header */ skb_reserve(skb, offsetof(struct can_frame, data));