Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CDB7C4332F for ; Mon, 20 Dec 2021 04:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237301AbhLTEPJ (ORCPT ); Sun, 19 Dec 2021 23:15:09 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:37617 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230231AbhLTEPH (ORCPT ); Sun, 19 Dec 2021 23:15:07 -0500 Received: by mail-il1-f197.google.com with SMTP id v3-20020a92c6c3000000b002b3919079d1so776908ilm.4 for ; Sun, 19 Dec 2021 20:15:07 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=dA41sw2aNHV4UHGeC8RSbb14+HrrLILYaej89YpH4eE=; b=ZwNiUCQE0ucbmCMN+4cwG8pWOO7WtQwREOoAOz4ABJMBbpPgn2LtLnN1wnOnCZt3/f DPZWf6mgMZ6JA5Q/zqpfQ2uBOmdDFnsGQKe7uuUTf9vJZkbg8MFGpmOE2CxNiiBxEfN7 udhV5UgVOFHJkgp28Mj6BZp3abt9+MGNPxajfPj/L/7+ioduJmMsfFVOmeA8FFMGauvC 2Eyrxxomc3+FsmOdbL2c6I2dFDkqVW7IVjLUl0GuiE7VyqjfqD6XHPVfQtEk6tb0srnV 9p+KP3yiRABSz0tGy0i5iQ22Kn8JLKJVW93IT7fVMhtah8otBmzKzr18hzK+QgS6KGvX BENQ== X-Gm-Message-State: AOAM5318LmyHGTLfb5EDexfpeRe3gv/ufNVQYmxw7ZkmEz7v9J/FeLHg /QdfcBgs+ceNVMssOyS2m9ZKqkAat1VOczEBD491uPZm43VV X-Google-Smtp-Source: ABdhPJyXcmpph7Uxs90eXgZ4J6O5bHwJHb0SeCJqzeX4nFnzR45jGIA0ziodV3xPBXpgT54fSJAUrsGi/SHKY0zsV96A9223mP06 MIME-Version: 1.0 X-Received: by 2002:a05:6638:22c8:: with SMTP id j8mr8937412jat.21.1639973707134; Sun, 19 Dec 2021 20:15:07 -0800 (PST) Date: Sun, 19 Dec 2021 20:15:07 -0800 In-Reply-To: <0000000000007ea16705d0cfbb53@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000413eba05d38c22c2@google.com> Subject: Re: [syzbot] kernel BUG in pskb_expand_head From: syzbot To: anthony.l.nguyen@intel.com, changbin.du@intel.com, christian.brauner@ubuntu.com, davem@davemloft.net, edumazet@google.com, eric.dumazet@gmail.com, hawk@kernel.org, hkallweit1@gmail.com, intel-wired-lan-owner@osuosl.org, intel-wired-lan@lists.osuosl.org, jesse.brandeburg@intel.com, kuba@kernel.org, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com, yajun.deng@linux.dev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit e4b8954074f6d0db01c8c97d338a67f9389c042f Author: Eric Dumazet Date: Tue Dec 7 01:30:37 2021 +0000 netlink: add net device refcount tracker to struct ethnl_req_info bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=109e6fcbb00000 start commit: 434ed2138994 Merge branch 'tc-action-offload' git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=129e6fcbb00000 console output: https://syzkaller.appspot.com/x/log.txt?x=149e6fcbb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7488eea316146357 dashboard link: https://syzkaller.appspot.com/bug?extid=4c63f36709a642f801c5 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14141ca3b00000 Reported-by: syzbot+4c63f36709a642f801c5@syzkaller.appspotmail.com Fixes: e4b8954074f6 ("netlink: add net device refcount tracker to struct ethnl_req_info") For information about bisection process see: https://goo.gl/tpsmEJ#bisection