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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 75A52C606B0 for ; Tue, 9 Jul 2019 04:08:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50CDE2073D for ; Tue, 9 Jul 2019 04:08:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726058AbfGIEIB (ORCPT ); Tue, 9 Jul 2019 00:08:01 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:44112 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726018AbfGIEIB (ORCPT ); Tue, 9 Jul 2019 00:08:01 -0400 Received: by mail-io1-f72.google.com with SMTP id s9so18345489iob.11 for ; Mon, 08 Jul 2019 21:08:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=Tojd49K4TWJ2ahCpfLjRNApjFre4XIEC+uxSBIyo+38=; b=XxO3enggT8j8yiU5VTfrvikR24qs1jPgendUG8/Limh4+b+5p0XFFUHF/X6PufNGpU 15pUXG2c+ng7TXIu2M2P+2hgVl/T9t3mgd2gqTWXFkziSle6qqGvDBqaGA76jlhbWx3Q UkK3AkLZQIcqLAE1MmNvTc2ht2pWld3QOZmiiqPN0QEHq52PR5/ubdYepv9kkMyfgabi 016HJ5CD8pi5jWY1wq57hFmpQgGZi/t/NtYy6+14Sa8jsPXuckW3CN/v2868y6RcVjSk a8Ik4aHDHFmJiRzyIDl3d/kqyFqyM2prDhzNIteg2ExYNkajATS4vQASsVxOO/LI0AV9 u/4w== X-Gm-Message-State: APjAAAVJZxyH3Rd39i/bg+RI+AfkiOtTHnZroKms5jlQzje/90wrwhjV H7Z7hNmsBOmKlueJHddipy+X5PH8nV5VRVg3pFpuL5b/u4cl X-Google-Smtp-Source: APXvYqxm/mXCoJ5Hk6y8vR6v2IS4oj/n6X0W9JquEY5V/Gz6bIh3qzQKuPRQYew4ljT/GIOxZ10ZAdEqTPIVIKbtLtZFlys15uqe MIME-Version: 1.0 X-Received: by 2002:a6b:cf17:: with SMTP id o23mr791127ioa.176.1562645280222; Mon, 08 Jul 2019 21:08:00 -0700 (PDT) Date: Mon, 08 Jul 2019 21:08:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d676f2058d37b4a9@google.com> Subject: Re: WARNING in __mark_chain_precision From: syzbot To: andrii.nakryiko@gmail.com, ast@kernel.org, bcrl@kvack.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, jakub.kicinski@netronome.com, john.fastabend@gmail.com, kafai@fb.com, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, viro@zeniv.linux.org.uk, xdp-newbies@vger.kernel.org, yhs@fb.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+4da3ff23081bafe74fc2@syzkaller.appspotmail.com Tested on: commit: b9321614 bpf: fix precision bit propagation for BPF_ST ins.. git tree: https://github.com/anakryiko/linux bpf-fix-precise-bpf_st kernel config: https://syzkaller.appspot.com/x/.config?x=6bb3e6e7997c14f9 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Note: testing is done by a robot and is best-effort only.