From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37656747F for ; Mon, 27 Jan 2025 15:31:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737991865; cv=none; b=H2nNLvQOM6ivd0MFChRmp0fKHr474bqrO7kE4cP+d8kyJgdrpuVCrJ0QVlwbjAIfj4ISml8ra7BbyFygWcQ4sY5MSh8d7oIQtcnuTNhkfjCXz9ZNOLOMLa+BvTdNNvhGNdYvXrIdZvr9ZcV3rdC0yZXtAULhsZFe+XlQrC06etU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737991865; c=relaxed/simple; bh=pk0falugNVXW9YaSYAKN1kLbELC3pSSmtTENQHaRLYc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=DePmig7xWYQzwZPD12p3r8K8sbYfROzBehVDJm8eUhN3qMW6BRHcoNPAODiUx4NBB46NyF+sxfkQtiAXQNiYUqTw281w8XD8kmWbvao5/i7k0PcPEBqIMzuwi5l6SWqFyTYuEd1lfuhvY1M6Db6p3LzQ/2m8lTF17XWlZv98370= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-844dadd9bdcso695299339f.2 for ; Mon, 27 Jan 2025 07:31:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737991863; x=1738596663; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=vTNYafEybL4lXeY2S2Qmsrv13OQGCeTdEc6zMRGI760=; b=ECwpxA05B/HOsW0J/qQvm7Yt7+brZ0/c7hdfCGpJLGLfmTGBAzYHf2/A9WE9TUd/qD gbWYuwl+fsY4DJqtRC2takbw15y5nV4Nv0ZEMLJahk3Sr61bcDnoInwj11sw5NRpEY8B ZIGj+TReQKSRbYGSv58fhoKabEKnmHIzZmb+TelJyjp3k/wxeXVlBXf8U1feyxpH33BJ SLJ0RRNIUnZ08aXkGnWQKIW1yxBz0Lh8/a5D/MQKgzHq6rKmJpyUOEFQP+AamdsKrIq4 GlAkL7JiO+/oMZlmjESQLLCmyFPCEtEx0pTseGQt1Xx+EhCw0YDwBfPHyHcpzyyDdxrt 5TQg== X-Forwarded-Encrypted: i=1; AJvYcCVjCeK86AcSAj9BfjBqjYDjdgQxzulgGTBRimQXO12fu4FebuDpkeG8uWLFeXA7QTw1icw=@vger.kernel.org X-Gm-Message-State: AOJu0Yz4JmEf1ycgxyLiFRsxERmWYBQtwRpANfm1x+X4SpkyeKD1mz4z okhlf3eC+THRyM72HIsIC8id+AF4r4670tvtZidVM/ncWSlupFkRtXCngBU3/hwXot0fhMC4OGq xvGQDK5REflydyJOq7IwHmGzcrWBa1uHzmVttq46ZHH7IAd6LI6jLvQc= X-Google-Smtp-Source: AGHT+IF0k5Aqucvj2ffNiCSgdgQE4Eik8GYb/V1Y57DZpMfTifsnu9wpqZCJNhjDBi3HTM+7rzOrPAIeuRSdWD4dQZM8q6G+xIjV Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:b4c:b0:3a7:e86a:e803 with SMTP id e9e14a558f8ab-3cf743f8834mr360037455ab.8.1737991863199; Mon, 27 Jan 2025 07:31:03 -0800 (PST) Date: Mon, 27 Jan 2025 07:31:03 -0800 In-Reply-To: <67555b72.050a0220.2477f.0026.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6797a6b7.050a0220.ac840.01cd.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in sys_umount (3) From: syzbot To: andrii@kernel.org, ast@kernel.org, bigeasy@linutronix.de, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, eddyz87@gmail.com, edumazet@google.com, haoluo@google.com, jiri@resnulli.us, john.fastabend@gmail.com, jolsa@kernel.org, kerneljasonxing@gmail.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, martin.lau@linux.dev, netdev@vger.kernel.org, pabeni@redhat.com, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit d15121be7485655129101f3960ae6add40204463 Author: Paolo Abeni Date: Mon May 8 06:17:44 2023 +0000 Revert "softirq: Let ksoftirqd do its job" bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1066f9f8580000 start commit: feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1266f9f8580000 console output: https://syzkaller.appspot.com/x/log.txt?x=1466f9f8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=1ec0f904ba50d06110b1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c060f8580000 Reported-by: syzbot+1ec0f904ba50d06110b1@syzkaller.appspotmail.com Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"") For information about bisection process see: https://goo.gl/tpsmEJ#bisection