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=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 497B0C433E5 for ; Thu, 23 Jul 2020 17:06:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25FFC20792 for ; Thu, 23 Jul 2020 17:06:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729028AbgGWRGG (ORCPT ); Thu, 23 Jul 2020 13:06:06 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:56021 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbgGWRGF (ORCPT ); Thu, 23 Jul 2020 13:06:05 -0400 Received: by mail-io1-f71.google.com with SMTP id k10so4442383ioh.22 for ; Thu, 23 Jul 2020 10:06:05 -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=5CYbMZ9E5A0Mz6J623Xu55BU2Et7NhlNxD6HpaP2/I8=; b=eJdkkxgKlJG+7iX5VSYuKsyhNVtGl2gX9GiBfrAVoJ8PAm2J8bHGDAekHfrHNMmfeq TR0owyWil81G7eBQvfZ2X8njXYgklmcFI7dRHrR6JI3wUGGs5CK73qLTIIEo2axng01z PPeJLFQHv143RW2MWpxnfaHFzWDwG2B9roJynLqzaub16Io93awY4Xj98yE8muQP1iyo MkjOqUASm8HHJJzodCLiPx7Tzl/nHZwinkgs+eY0e85G4mppkydfWh3wiflaf0bhO6c7 IQBzLowGinK7fYG2PL/tooGeBhTs7BLrT7Nj6ZyD61Nv5xfLPreZjcLNG3KkNKVhgLEj bsgw== X-Gm-Message-State: AOAM531mk428/Lc7dAwmltpd2srxcOSLTwzgUj81Sja2o8hr9v8+HSro e87TLtlJQsQrPiXhmZpRvcqYJ0sdDza9CSPp33gDYROUxaZf X-Google-Smtp-Source: ABdhPJxO1HAnLT9DnS+ErjhGrIxE4rnBK+8uSCWAMhvotTHMVQYSX/Tja0D8v90nwLa656ScMblR2RAfY/8cBGRHlC5Im1fJq9o5 MIME-Version: 1.0 X-Received: by 2002:a92:3407:: with SMTP id b7mr5752526ila.66.1595523964723; Thu, 23 Jul 2020 10:06:04 -0700 (PDT) Date: Thu, 23 Jul 2020 10:06:04 -0700 In-Reply-To: <000000000000b1b74105a91bf53d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000025ed9705ab1edf54@google.com> Subject: Re: KASAN: use-after-free Read in macvlan_dev_get_iflink From: syzbot To: andriin@fb.com, ap420073@gmail.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this issue to: commit 1a33e10e4a95cb109ff1145098175df3113313ef Author: Cong Wang Date: Sun May 3 05:22:19 2020 +0000 net: partially revert dynamic lockdep key changes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17663aef100000 start commit: 1590a2e1 Merge tag 'acpi-5.8-rc3' of git://git.kernel.org/.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=14e63aef100000 console output: https://syzkaller.appspot.com/x/log.txt?x=10e63aef100000 kernel config: https://syzkaller.appspot.com/x/.config?x=20c907630cbdbe5 dashboard link: https://syzkaller.appspot.com/bug?extid=95eec132c4bd9b1d8430 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1559e6e5100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16aadd29100000 Reported-by: syzbot+95eec132c4bd9b1d8430@syzkaller.appspotmail.com Fixes: 1a33e10e4a95 ("net: partially revert dynamic lockdep key changes") For information about bisection process see: https://goo.gl/tpsmEJ#bisection