From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f72.google.com (mail-oo1-f72.google.com [209.85.161.72]) (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 0D4FC442392 for ; Tue, 1 Sep 2026 08:22:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788250925; cv=none; b=a+FdMtFw/L1rizNowZWgHqf3zYkmnSBeZI+F9AKD1tWEgNBAP40a7seu8YY+G2CrXqvJJeUCaaglCRXyOg1beANepig+Dq1e2MygYp+BTjvZrh0NGRTES5FwBJSgj3Iiq5zzBnYELtG2Xp8Wb0FSmNo+rGWCMQez2VZRxGR8iDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788250925; c=relaxed/simple; bh=q2ef4aVgRZ0IRRYARvgwN/BgJu11vID21E9V5Gms9O4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Z3n5ZFbx/P9Sfop3cdGYcL8WQXpd0u5qJZeAtW9IsLAJBWcWGOopXOqXV5pH5I5HSyGuJZ309DSNhfs1hp+OIKEzv28qjA/K5Td9i+pm8Sgh1iOHeghP08DC117K4k5Orw4mu/cb4ARioXeXmgO11KPX2eamL9bwLy2tOPPVKAw= 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=209.85.161.72 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-f72.google.com with SMTP id 006d021491bc7-6b1478e3546so516860eaf.0 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=ISgQQ0vQy6zLzvK2M3/gxbL68oYYw2DKI7amRZvGNgKJSBxyz8UArPTOg2rvRWq3dk rDJMQok9yQcoD6mrIOqTm0OxM8bDfBxm9cHt3a2scCSgAbNZxGnQ8mcZRLBr9FJ/qe5M 7CXfv+R2dL9YXbIq1V9hCc27YpGo19hAmU/2IGmPmKeb3fZAubIPDHTvOWbKOvOmEU82 4+0zHw5ARDAUJiMZ1ZF3Zz4E+Ar/EyUns3WzHU/2HKoJp5iYP6YoEW33J3FznGvs/wKs eqQCwFAE0LHA2HfwkTgz1BQuXgB++dEv51GKBBp5rxrx649Nuza6G4oF9x8FRQSz47Hc UK3g== X-Forwarded-Encrypted: i=1; AHgh+RqvJi2A5ORzDklvQXwbnwykuHNmEIK133Crri95C/RV+8nF0mnub791+hO9S5T9ttA9F77eF70gqdI7fMs=@vger.kernel.org X-Gm-Message-State: AFuF++lj/EydEdLuCKMpIYXb+UkvIY3m5PBA263XyfjZS8jkE3fS0MvT pTTKecBPoaywDBYJ6K7pX2qiEJ0lNaAptRB99Gs/LJQ0OTmVHmsnCZMTu/laXzhnE+pCANnXrVd 6a0TTTh+4SPQ7eTv6JW9tNngFwVxaV7pIzxBKQ6VyeD11jiW1zUANsogGxF4= Precedence: bulk X-Mailing-List: linux-kernel@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.