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=-8.7 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 96CD9C388F7 for ; Thu, 22 Oct 2020 12:40:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43741223BF for ; Thu, 22 Oct 2020 12:40:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2505295AbgJVMkM (ORCPT ); Thu, 22 Oct 2020 08:40:12 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:43110 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2504575AbgJVMkH (ORCPT ); Thu, 22 Oct 2020 08:40:07 -0400 Received: by mail-il1-f197.google.com with SMTP id p15so904028ilq.10 for ; Thu, 22 Oct 2020 05:40:05 -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=YPsm7wTqwgB7HM8NoGjpzt0jTQrojzltFX1YmnCyMgA=; b=acZ2c6lwSLj/AiGjgiCCIGCQ2Q7Q8KP+uvXyRMCWBF/Uej08yLGqzIKPuSt7TmGxJY BtvX0JKS5GoC9xI85mKJyig0Gw7e8odj6NsTad1rXsNonVrGWkuextXVAFQOXfylgrJG lQcsozJNSnSk4nWL5k/O0dHawfUrIBbBPGiQ2Wcz5IycYmUE7qIOj5KIDhQarukWCFPg ONTmhLm/GLrDYMP82deIxCkTolotMzz235mpR6IeF/eS74PIUxqBby+pFHnh8FGJD2Fu 0RNDEUMDGtaDHfl8SzxssAK9opsx4clk9YtVCTZpYaP4Au24z1T0Jv3H3NMrCYglatfS 9sqw== X-Gm-Message-State: AOAM531cC2aZ+MnG0yBSbzjs8DAImQPfzwmfatFPY8wWXIsBUu9/yiKM xG+aCHyuNT2aYtiYSmgTy3/s3gIjKVxyPeTENz0FpAKzcJYV X-Google-Smtp-Source: ABdhPJz6S3j+p9N8Mn8XnEFCZqzaJIEIlYealXw2z4J2EQRPPGK94GoFSGIbIevJK22mOLgyD6udTcjXwHdyUItSiH/g+Idl4r+7 MIME-Version: 1.0 X-Received: by 2002:a05:6602:6ce:: with SMTP id n14mr1671095iox.34.1603370405018; Thu, 22 Oct 2020 05:40:05 -0700 (PDT) Date: Thu, 22 Oct 2020 05:40:05 -0700 In-Reply-To: <000000000000add83505a8e38c4c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006f439b05b241c3c5@google.com> Subject: Re: WARNING: suspicious RCU usage in ctrl_cmd_new_lookup From: syzbot To: anant.thazhemadam@gmail.com, bjorn.andersson@linaro.org, colin.king@canonical.com, dan.carpenter@oracle.com, davem@davemloft.net, dragonjetli@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, manivannan.sadhasivam@linaro.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot suspects this issue was fixed by commit: commit a7809ff90ce6c48598d3c4ab54eb599bec1e9c42 Author: Manivannan Sadhasivam Date: Sat Sep 26 16:56:25 2020 +0000 net: qrtr: ns: Protect radix_tree_deref_slot() using rcu read locks bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=143867c8500000 start commit: 7ae77150 Merge tag 'powerpc-5.8-1' of git://git.kernel.org.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=d195fe572fb15312 dashboard link: https://syzkaller.appspot.com/bug?extid=3025b9294f8cb0ede850 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11802cf9100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144acc03100000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: net: qrtr: ns: Protect radix_tree_deref_slot() using rcu read locks For information about bisection process see: https://goo.gl/tpsmEJ#bisection