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=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 EEDBBC433E9 for ; Thu, 3 Sep 2020 17:16:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCA5520716 for ; Thu, 3 Sep 2020 17:16:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=buslov.dev header.i=@buslov.dev header.b="o+yStLzc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728708AbgICRQg (ORCPT ); Thu, 3 Sep 2020 13:16:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727786AbgICRQe (ORCPT ); Thu, 3 Sep 2020 13:16:34 -0400 X-Greylist: delayed 586 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 03 Sep 2020 10:16:33 PDT Received: from mail.buslov.dev (mail.buslov.dev [IPv6:2001:19f0:5001:2e3f:5400:1ff:feed:a259]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A93AAC061244; Thu, 3 Sep 2020 10:16:33 -0700 (PDT) Received: from vlad-x1g6 (unknown [IPv6:2a01:d0:40b3:9801:fec2:781d:de90:e768]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by mail.buslov.dev (Postfix) with ESMTPSA id 166AC1F899; Thu, 3 Sep 2020 20:06:42 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=buslov.dev; s=2019; t=1599152802; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=cYNnDoJ2SqlCA9nFNN49olKHiWCFYIXnAJSiUk0aIBM=; b=o+yStLzcfvZNIJO6NNb9dvjI+5O3MhqRLR3OFTuTxow1TKMp5g7TPcIPxwLPNsZ9eYE16n RTxfgBicNm3PWsYaxdfm/gOTu/IBdiN7uAvb2T5Dfj7N/tYkROsPaFtukCJHK+dPYqkbhF WNq4uPsDA19MlOhFFcqiUFiPE0DRpg5jFMyRha7yg6Jm76Ce4CZdfxGAtfWNJcHERtGY/5 +hDFhvX57Qms43rg1MhTD7pNTzxqPxCOHNpoN5TvznezApbqp8v+o8yWQwfZCOkH+FktQ3 tCW7ntfmdJyUDhE3p5U09e+mBEnScYR3HbR8g8b24j5jhSoqChg4dGLd09+xBg== References: <00000000000014fd1405ae64d01f@google.com> <000000000000fcd01005ae6a77e7@google.com> User-agent: mu4e 1.4.10; emacs 26.3 From: Vlad Buslov To: syzbot Cc: davem@davemloft.net, eric.dumazet@gmail.com, jhs@mojatatu.com, jiri@mellanox.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, marcelo.leitner@gmail.com, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, vladbu@mellanox.com, xiyou.wangcong@gmail.com Subject: Re: INFO: task hung in tcf_ife_init In-reply-to: <000000000000fcd01005ae6a77e7@google.com> Date: Thu, 03 Sep 2020 20:08:23 +0300 Message-ID: <878sdqg54o.fsf@buslov.dev> MIME-Version: 1.0 Content-Type: text/plain Authentication-Results: ORIGINATING; auth=pass smtp.auth=vlad@buslov.dev smtp.mailfrom=vlad@buslov.dev Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Thu 03 Sep 2020 at 18:33, syzbot wrote: > syzbot has bisected this issue to: > > commit 4e8ddd7f1758ca4ddd0c1f7cf3e66fce736241d2 > Author: Vlad Buslov > Date: Thu Jul 5 14:24:30 2018 +0000 > > net: sched: don't release reference on action overwrite > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ae08e9900000 > start commit: 1996cf46 net: bcmgenet: fix mask check in bcmgenet_validat.. > git tree: net > final oops: https://syzkaller.appspot.com/x/report.txt?x=16ae08e9900000 > console output: https://syzkaller.appspot.com/x/log.txt?x=12ae08e9900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11 > dashboard link: https://syzkaller.appspot.com/bug?extid=80e32b5d1f9923f8ace6 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=161678e1900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f826d1900000 > > Reported-by: syzbot+80e32b5d1f9923f8ace6@syzkaller.appspotmail.com > Fixes: 4e8ddd7f1758 ("net: sched: don't release reference on action overwrite") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection The trace in bisection result doesn't seem to be related to the original report and is fixed by 32039eac4c48 ("net: sched: act_ife: always release ife action on init error").