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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham 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 D47F6C43381 for ; Tue, 12 Mar 2019 18:55:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9CC10214AE for ; Tue, 12 Mar 2019 18:55:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552416938; bh=z+F3y0MfbWF3mPPNljc/WguivEOctEt4DSUUq+NI1jw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=qksH8Mmuw6PL23xW/u8zRhwsAd4De2hL0jh8GN6XEMmR8wzK/EhMfqncT1OpfMyIp YrtXB1uuHx6aUVIvDE0u6gqXyRCWxW2E9rneqT0Q5zIPvssUiVKgn/1GoFoLuBuuJ0 yO4/p6BWdXVQE+We0NTxJTUlbOn6Fe7cOkNI2BSw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726438AbfCLSzi (ORCPT ); Tue, 12 Mar 2019 14:55:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:44162 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726339AbfCLSzh (ORCPT ); Tue, 12 Mar 2019 14:55:37 -0400 Received: from localhost (unknown [104.133.8.98]) (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 EA3292147C; Tue, 12 Mar 2019 18:55:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552416937; bh=z+F3y0MfbWF3mPPNljc/WguivEOctEt4DSUUq+NI1jw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FVwKTF2dZd/OYLG1qV8I80N6a4t8XLttpTkug/Gsr9p/XfYdsO0zWTKpSFrk29SQV FLLESX/+L/48r7SZVdrDCH2H2N1+I5tbe9amyQHufT/ReSiovWS8sGEi8QG4PEGsQH lrJolk5huoX48n4GGOCHJhsrBsMq2MuMB8+yEc5M= Date: Tue, 12 Mar 2019 11:55:35 -0700 From: Greg KH To: Zubin Mithra Cc: stable@vger.kernel.org, groeck@chromium.org, edumazet@google.com, davem@davemloft.net, kuznet@ms2.inr.ac.ru, herbert@gondor.apana.org.au Subject: Re: 30c7be26fd35 ("udplite: call proper backlog handlers") Message-ID: <20190312185535.GA13892@kroah.com> References: <20190312174249.GA185472@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190312174249.GA185472@google.com> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Tue, Mar 12, 2019 at 10:42:50AM -0700, Zubin Mithra wrote: > Hello, > > Syzkaller has triggered a GPF when fuzzing a 4.4 kernel with the following calltrace. > > Call Trace: > [] sk_backlog_rcv include/net/sock.h:874 [inline] > [] __release_sock net/core/sock.c:2059 [inline] > [] release_sock+0x16b/0x520 net/core/sock.c:2507 > [] udp_sendmsg+0x115b/0x1c70 net/ipv4/udp.c:1107 > [] inet_sendmsg+0x20c/0x4d0 net/ipv4/af_inet.c:780 > [] sock_sendmsg_nosec net/socket.c:638 [inline] > [] sock_sendmsg+0xd1/0x110 net/socket.c:648 > [] SYSC_sendto+0x21c/0x370 net/socket.c:1678 > [] SyS_sendto+0x45/0x60 net/socket.c:1646 > [] entry_SYSCALL_64_fastpath+0x1e/0xa0 > Code: 74 24 58 41 f6 c6 01 0f 85 b2 08 00 00 e8 65 d2 c3 fe 49 83 e6 fe 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 60 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e b9 0e 00 00 41 f6 46 60 04 > RIP [] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline] > RIP [] xfrm_policy_check include/net/xfrm.h:1076 [inline] > RIP [] xfrm4_policy_check include/net/xfrm.h:1081 [inline] > RIP [] udp_queue_rcv_skb+0x194/0x1590 net/ipv4/udp.c:1520 > RSP > > Could the following patch be applied to v4.4.y? It is present in v4.9.y. > * 30c7be26fd35 ("udplite: call proper backlog handlers") > > Tests run: > * Chrome OS tryjob tests > * Syzkaller reproducer Now queued up, thanks. greg k-h