From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (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 26928370AE5 for ; Tue, 1 Sep 2026 08:22:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788250924; cv=none; b=KENiesKb0G4VBM9iDEMYoNu+nScy0ZQXu6/x3QDkxkHgLu77vjSaDVZE4EpkPpgefNaPD7kttZCIMnA6EEyJVDiRq8kSfdPQ6OqwIsVuEDB8RSUk06Hys+SOtTUe9A311nynyAweZW+GV219DZeAOJ8hJOOvUgO040mKknBXX14= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788250924; c=relaxed/simple; bh=q2ef4aVgRZ0IRRYARvgwN/BgJu11vID21E9V5Gms9O4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=myxo5lCfoNxWW+uGr7fRFReyn+M4LR62XcEHTvqNIA/A1zLrVHp4eaHq3KFca7pvq7ubEzyXTkYselFjYKHbTl7tAdCElnomRvyDxyGGIbhrHNgi2d+LtEkG4Jy/sEEI48PUFJyDCtK5e8+ixnzptQSNGVtrxM15MLLpZj3S0SQ= 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=209.85.161.70 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-oo1-f70.google.com with SMTP id 006d021491bc7-6b12ae7394cso820084eaf.1 for ; Tue, 01 Sep 2026 01:22:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788250922; x=1788855722; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=Fxsg3tyZFfDboYC1KLQNAGrb0RmxM442yXMbJyS8HSI=; b=MLoZgEptPAG87I/duKkMH3BoU5kuqlqXZqKko6XCeKUOmzrnR3bYVOGnvc0jJWMvkc +Out8SptO+9XVKwEYZB4xFc/wf6eoFsut4YuBup/vBZvU+uljYvTPMvgBgrr6jeWqrCs AFwze/igxAVoV/KyyxtptL33yawjFRvm3FMWqgek+KJfU6tUy0/JX8Ed9PzZdGArY90k q9ymWRF2KWgmtpr6aglpIwPOKRFS8zgwDqcU1UyWJ6xkncKO6GC2H81NHNeucIuSgKdo HpdSbebzp92IDgVDlIzkt+QTBQ5ZGBHX3DJO89qQXctV8TQfd8dPDVGRYr2v+R4nbBcC pGeQ== X-Forwarded-Encrypted: i=1; AHgh+RogjQ/BiTAoR4RW8tVvvjiLN1KDEjbgtM9UUYZzg6pnO3HNrveOMsWYXBf083Iab7cY/NZY1/j8@vger.kernel.org X-Gm-Message-State: AFuF++l9pQ5ssPQbGIWAX9lMBNVDpkOflHjUNmb2/O4V1sxx1OzBxelU yRzyKTNePRTCeWj5QI3CPlX4FZIP94taFDLxfJHubf4jVcLh3L3q6X9n7R2oVuFjhSOA0RJzDcf aw4NvILBu/kYzUUrC04bTRqtPgsamQLjXHzzR5uZx1eXTFAubfYkPsheDEDE= Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:7049:b0:6b1:a812:9871 with SMTP id 006d021491bc7-6b1c66855d6mr31267352eaf.18.1788250922028; Tue, 01 Sep 2026 01:22:02 -0700 (PDT) Date: Tue, 01 Sep 2026 01:22:02 -0700 In-Reply-To: <20260901014303.417027-1-junjie.cao@intel.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a968b2a.08473e0e.15b4ac.0000.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in exit_to_user_mode_loop From: syzbot To: akpm@linux-foundation.org, cgroups@vger.kernel.org, davem@davemloft.net, edumazet@google.com, hannes@cmpxchg.org, hdanton@sina.com, horms@kernel.org, jackmanb@google.com, jhs@mojatatu.com, jiri@resnulli.us, junjie.cao@intel.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, mhocko@suse.com, muchun.song@linux.dev, netdev@vger.kernel.org, pabeni@redhat.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, surenb@google.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, vinicius.gomes@intel.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+2642f347f7309b4880dc@syzkaller.appspotmail.com Tested-by: syzbot+2642f347f7309b4880dc@syzkaller.appspotmail.com Tested on: commit: abdf623d Merge tag 'wq-for-7.3-rc1-fixes' of git://git.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=123d1379580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9cc692b98d9b4fdb dashboard link: https://syzkaller.appspot.com/bug?extid=2642f347f7309b4880dc compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=16f7eb79580000 Note: testing is done by a robot and is best-effort only.