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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94BEFC433EF for ; Tue, 19 Oct 2021 17:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6833060F9D for ; Tue, 19 Oct 2021 17:09:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234307AbhJSRL3 (ORCPT ); Tue, 19 Oct 2021 13:11:29 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:56284 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231231AbhJSRL0 (ORCPT ); Tue, 19 Oct 2021 13:11:26 -0400 Received: by mail-il1-f199.google.com with SMTP id o8-20020a056e02068800b0025999dab84fso4421521ils.22 for ; Tue, 19 Oct 2021 10:09:13 -0700 (PDT) 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=rcp90Jycu8Zrw+AkGD2yNkS0oA6YUsleSOyH/uwUAPI=; b=bVyNaTOLV2Lvc74UD0jbfKc6z4YCe7fVINYhJeKh0RHQ6KadCLPgmj4vpHvxeHyR6x 2Sov+p7Wfmxc5A401e+mO4rqGmBsqZWhlnw3cm6ztYeYsQjxNuOCOK8BNjpDINfCjS0F dUNVRNISs1udRDTCKg3+gLzrWba5/BZ8y/7rM9Ic/2mA8CSrNOdPkKWQyuKQk83k1DhI 7oPnx7II9tFAo5OQDRH2rjX2ocoujinBNCGYc9cc7wbZAz+uQeMVDfe+0n2ImI4frYSY rnTECpMWyoOcr/rg23Uxt6MLn6KlzJL5dpXEvj13qGL64B3BqrNY66Bq3Ve9pNMp4oxG qEDg== X-Gm-Message-State: AOAM531zat6IGLSSpVxaLvI/7YoimDm94VGMjosOeEGH8jzDQ8dxpKKf fSRUYAXC/PB5pjTWJe4ZLryXFvuxEUslFnw/2NIaE0Gl9vpa X-Google-Smtp-Source: ABdhPJz5oWnGZhBKSmLq/ZFBEeB1xmILbveWmW93eY56Q5lQV4BTx0LgwgOxqR5ByYO9WNkp6QGlx3AVqX7ABhzla8Dajhiij5VX MIME-Version: 1.0 X-Received: by 2002:a6b:ee0d:: with SMTP id i13mr19679964ioh.166.1634663353642; Tue, 19 Oct 2021 10:09:13 -0700 (PDT) Date: Tue, 19 Oct 2021 10:09:13 -0700 In-Reply-To: <0000000000007e727005c284bc8e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008578d105ceb7b82e@google.com> Subject: Re: [syzbot] possible deadlock in perf_event_ctx_lock_nested (2) From: syzbot To: acme@kernel.org, alexander.shishkin@linux.intel.com, andrii@kernel.org, ast@kernel.org, bigeasy@linutronix.de, bpf@vger.kernel.org, bristot@redhat.com, bsegall@google.com, daniel@iogearbox.net, dietmar.eggemann@arm.com, gor@linux.ibm.com, jgross@suse.com, john.fastabend@gmail.com, jolsa@redhat.com, juri.lelli@redhat.com, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mark.rutland@arm.com, mgorman@suse.de, mingo@redhat.com, namhyung@kernel.org, namit@vmware.com, netdev@vger.kernel.org, peterz@infradead.org, rostedt@goodmis.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, vincent.guittot@linaro.org, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org syzbot has bisected this issue to: commit 8850cb663b5cda04d33f9cfbc38889d73d3c8e24 Author: Peter Zijlstra Date: Tue Sep 21 20:16:02 2021 +0000 sched: Simplify wake_up_*idle*() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=166a8c90b00000 start commit: 60e8840126bd Add linux-next specific files for 20211018 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=156a8c90b00000 console output: https://syzkaller.appspot.com/x/log.txt?x=116a8c90b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4bd44cafcda7632e dashboard link: https://syzkaller.appspot.com/bug?extid=4b71bb3365e7d5228913 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11eccf58b00000 Reported-by: syzbot+4b71bb3365e7d5228913@syzkaller.appspotmail.com Fixes: 8850cb663b5c ("sched: Simplify wake_up_*idle*()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection