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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFDFAC3525A for ; Wed, 9 Feb 2022 05:09:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233286AbiBIFHL (ORCPT ); Wed, 9 Feb 2022 00:07:11 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:56656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230153AbiBIFCS (ORCPT ); Wed, 9 Feb 2022 00:02:18 -0500 Received: from out30-130.freemail.mail.aliyun.com (out30-130.freemail.mail.aliyun.com [115.124.30.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57C81C03E926; Tue, 8 Feb 2022 21:02:19 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R821e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=guwen@linux.alibaba.com;NM=1;PH=DS;RN=16;SR=0;TI=SMTPD_---0V3ze3Rg_1644382934; Received: from 30.225.24.53(mailfrom:guwen@linux.alibaba.com fp:SMTPD_---0V3ze3Rg_1644382934) by smtp.aliyun-inc.com(127.0.0.1); Wed, 09 Feb 2022 13:02:15 +0800 Message-ID: <4da041e7-d88c-16ba-d180-f8e8b8c2ef31@linux.alibaba.com> Date: Wed, 9 Feb 2022 13:02:13 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [syzbot] BUG: MAX_LOCK_DEPTH too low! (3) To: syzbot , andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, john.fastabend@gmail.com, kafai@fb.com, kgraul@linux.ibm.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com References: <0000000000006d045e05d78776f6@google.com> From: Wen Gu In-Reply-To: <0000000000006d045e05d78776f6@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2022/2/9 4:21 am, syzbot wrote: > > The issue was bisected to: > > commit 341adeec9adad0874f29a0a1af35638207352a39 > Author: Wen Gu > Date: Wed Jan 26 15:33:04 2022 +0000 > > net/smc: Forward wakeup to smc socket waitqueue after fallback > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11c2637c700000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=13c2637c700000 > console output: https://syzkaller.appspot.com/x/log.txt?x=15c2637c700000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+4de3c0e8a263e1e499bc@syzkaller.appspotmail.com > Fixes: 341adeec9ada ("net/smc: Forward wakeup to smc socket waitqueue after fallback") > > BUG: MAX_LOCK_DEPTH too low! > turning off the locking correctness validator. > depth: 48 max: 48! Thanks for syzbot's report. I will look into this issue and give feedback as soon as possible. Thanks, Wen Gu