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=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_MED,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 2C0FDC072B5 for ; Fri, 24 May 2019 09:24:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DCF56217F9 for ; Fri, 24 May 2019 09:24:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="wFonep2d" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390027AbfEXJY0 (ORCPT ); Fri, 24 May 2019 05:24:26 -0400 Received: from mail-it1-f193.google.com ([209.85.166.193]:39950 "EHLO mail-it1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389788AbfEXJY0 (ORCPT ); Fri, 24 May 2019 05:24:26 -0400 Received: by mail-it1-f193.google.com with SMTP id h11so12807763itf.5 for ; Fri, 24 May 2019 02:24:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=HYgiw9gdlhueg6+WRAGyhJKX3AtGrR1zYnjTbOTRfuY=; b=wFonep2dku0EgPsJQkwjn4qapIzbxEItS07MsYZtekZBxqqCxFWH+MeuyJ6bjDF28a KpuMxHLx4Dey+j1/UoQ0wEodShezvwCAaVP8ACNkyacJvevRpu9drmOiaT4m7EKklQqk jQU3VG3IbBvFEEQ+u2u2r/Z4MWdh9ywg9cey7DPiNvK/PTrUhJdOQ4lcCn+invrdaAB9 x/MFN1bt83Gy7Rpatti38cgt1xZ5RA1W4y+lRbbLgzBM7IYWHHeSbgceaYm3DhNY1M1Z uftoxhYDz76QZHEF+QurEEU+8+XHbJ3lQGO1ZP47YB5JC53IIMAZtqQX7S8S95j5YX1g xlgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=HYgiw9gdlhueg6+WRAGyhJKX3AtGrR1zYnjTbOTRfuY=; b=KS3WxqJVvgdNKsa13pRgE+N3/Mo37LYe7K88aze65ChyUm+/2afR0MMOXDkK6sdbP8 8CHBa7s5LPu8CmCjipj7+NxFvOsF+TQuQUhjoNP5WJUB5ABCRaP5ILx7O+rlC22TNNMe wX7S50bbX786Je6+nKcbnhZc1nXpYKWmspfQOs3CnBe/f7oS9VQVtSe0RVGnT97l21fH og3e0Df+xS54SHkJ/ayCb2yehASk1o33sUeqOa3LswX7NjfTKFVOIbN1vHf96axnpNfP t79/3iFGFCBo4sUEMXwNtyfjsu5HcFsR3uTkV/LMDUnXrvOQbBWk8dvJP4NydUvQ9ayC Wswg== X-Gm-Message-State: APjAAAWqcAygilUmnc279RbRCtFt+SXpxqUZ3Izl0wHzVYJ/xQB7okA7 IyZ3rVt78RHEFd+vBbrsIq9Rr5rb90AtmteeZfcK2g== X-Google-Smtp-Source: APXvYqzSFjcTrQ2rHAw6gfH24REoDGsW3b8LRVtsKU42COArxlGqgL+aTZ/NtgQ7xnvLKEwhjywv57YGeuFjAvP552U= X-Received: by 2002:a02:1384:: with SMTP id 126mr60762476jaz.72.1558689865209; Fri, 24 May 2019 02:24:25 -0700 (PDT) MIME-Version: 1.0 References: <0000000000008666df05899b7663@google.com> <649cac1e-c77c-daf8-6ae7-b02c8571b988@iogearbox.net> In-Reply-To: <649cac1e-c77c-daf8-6ae7-b02c8571b988@iogearbox.net> From: Dmitry Vyukov Date: Fri, 24 May 2019 11:24:14 +0200 Message-ID: Subject: Re: bpf build error To: Daniel Borkmann Cc: syzbot , LKML , netdev , syzkaller-bugs Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 24, 2019 at 10:08 AM Daniel Borkmann wro= te: > > On 05/24/2019 07:28 AM, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: e6f6cd0d bpf: sockmap, fix use after free from sleep in= ps.. > > git tree: bpf > > console output: https://syzkaller.appspot.com/x/log.txt?x=3D16f116e4a00= 000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=3Dfc045131472= 947d7 > > dashboard link: https://syzkaller.appspot.com/bug?extid=3Dcbe357153903f= 8d9409a > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > > > Unfortunately, I don't have any reproducer for this crash yet. > > > > IMPORTANT: if you fix the bug, please add the following tag to the comm= it: > > Reported-by: syzbot+cbe357153903f8d9409a@syzkaller.appspotmail.com > > > > net/core/skbuff.c:2340:6: error: =E2=80=98struct msghdr=E2=80=99 has no= member named =E2=80=98flags=E2=80=99 > > Disregard, tossed from bpf tree. Let's close it then #syz invalid or it will hang open on the dashboard distracting people looking for open bugs and new bpf build breakages won't be reported.