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=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 99232C433E1 for ; Fri, 14 Aug 2020 13:17:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B70D20866 for ; Fri, 14 Aug 2020 13:17:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726444AbgHNNRM (ORCPT ); Fri, 14 Aug 2020 09:17:12 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:51150 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726268AbgHNNRI (ORCPT ); Fri, 14 Aug 2020 09:17:08 -0400 Received: by mail-il1-f199.google.com with SMTP id t20so6548241ill.17 for ; Fri, 14 Aug 2020 06:17:07 -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=IH2yFUwfReDyb+ZllS6U8RBdlomdqdJ/qVk5KbqvAis=; b=YlOczIz1RrPJz5d59PCiLPr8UgSefrpKH9tgQI8zgi1FqbTeldwzwtMdp3R+uavGSK qUqTZW6uw+krRJrD48fWtWDSILyotAFRd4BPsjEDTbudnk8az87G4ZmrCfENymFnMfvQ qhpWnmXjMvCZIUeBF8p/d9n84V1zIi5GCYLkMa9DRy4KGFR0ZEzjOVivxF4WF7K64rLm iA51aaPliJS4k16adFZS61sYjaqypzbDMHoC5yzwQgnvNonYghvxuZakO6IzsXcln9AO //5jimNJa7BcfO2PNxFRrUEAE3YqluK0bhI5W6pjXYtClH4TGroU3HlY1HP0ivO91A56 YVYQ== X-Gm-Message-State: AOAM531QsgthXCXO4S7h584UwMZ//pJKKZDber9i55GfiGKo9GmpEoKB VK2clh7Mhys/5F6SjgQTWGG1Pwi53KOXCiauwhE7YeM7OETx X-Google-Smtp-Source: ABdhPJw0DlrmX1wRwvc5QY6U9kAZSrT6vpFGHl67k3p4ysMpI61y/3sf2z41wWaLsVc2vLfboRZmffcWc+uADhjTbkL89fyq6HPG MIME-Version: 1.0 X-Received: by 2002:a92:d588:: with SMTP id a8mr2552007iln.146.1597411027574; Fri, 14 Aug 2020 06:17:07 -0700 (PDT) Date: Fri, 14 Aug 2020 06:17:07 -0700 In-Reply-To: <0000000000006dc0290581ca413e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dbe6ee05acd63ca2@google.com> Subject: Re: WARNING: locking bug in try_to_grab_pending From: syzbot To: davem@davemloft.net, edumazet@google.com, jmaloy@redhat.com, kuba@kernel.org, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 1378817486d6860f6a927f573491afe65287abf1 Author: Eric Dumazet Date: Thu May 21 18:29:58 2020 +0000 tipc: block BH before using dst_cache bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=175599f6900000 start commit: 6663cf82 flow_offload: Fix flow action infrastructure git tree: net-next kernel config: https://syzkaller.appspot.com/x/.config?x=8572a6e4661225f4 dashboard link: https://syzkaller.appspot.com/bug?extid=2b713236b28823cd4dff syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13e932a8c00000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: tipc: block BH before using dst_cache For information about bisection process see: https://goo.gl/tpsmEJ#bisection