From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 984208F54 for ; Tue, 4 Nov 2025 19:30:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762284644; cv=none; b=Z5un5KOKWA6TCrkMkYKiVgYefmSou9saSFgHwcb6ykFaeBbGghy5GL38+L9fNy/tVkcDHpWVSUxAjkO7N8xzca9423YR+4dWVoMg2b+LuvLcTJqKZm9zsNl7u6YGsJaMJP4gC/VA9JWtin3lwZv9VWRAyvmYYce0gEOYThakTNM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762284644; c=relaxed/simple; bh=4IGghb+PdozHytQUZpeqOp4t9p9Ko5vzzEC9iU5cpEA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=GlQut8VgrlJvJap0IUuUyGa9TIPFhAwk1iVz1BSAYJmmfENXZED7fpJTZTd1WHGiY0PEL0sji/oDmQkUVK7GraTP87T060kNHbDlsVOSUFuAfdv5gnMpamVAOKStIl/h0THGhNrRYq4XUbYNtd4EpIrDoJfQ4evl8yy03GWBUUI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZxLKM4G0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZxLKM4G0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 166CCC4CEF7; Tue, 4 Nov 2025 19:30:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762284644; bh=4IGghb+PdozHytQUZpeqOp4t9p9Ko5vzzEC9iU5cpEA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZxLKM4G0udzgWHz7ZlarbroDDhyS/VyIV1AJnUUxpFzC3r/9EH/Ebtuub3vNX1uxc 4GQ6lDqzx09VjwgmoOvJSkjoZG2w/uWrxg/uutW76Rklanp8ZwxFBCQs+SRHQe01or 76+1J0rE82E1SWzi+oJe6iBBFFrOw95E+tv9jkjy2Skv2nWN+6uTDcEnPdfdjFKlKz +eqe9gRBTohDTliOpQz6ZFy6jr/1euWOnKhyhD58MrfKAIA7tQsnFwHaj5xX62vHKW 8Ip2MFQmnWPiToH/QCQiXyQrDj9XTk2Hti9sxdCp+5xmf1N1B4erT0z4HoTOk7hHKn iOqzzjRBHeV5Q== Date: Tue, 4 Nov 2025 09:30:43 -1000 From: Tejun Heo To: Calvin Owens Cc: linux-kernel@vger.kernel.org, Dan Schatzberg , Peter Zijlstra Subject: Re: DEBUG_ATOMIC_SLEEP spew in cgroup_task_dead() on next-20251104 Message-ID: References: <20251104181114.489391-1-calvin@wbinvd.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251104181114.489391-1-calvin@wbinvd.org> Hello, Calvin! How are you? On Tue, Nov 04, 2025 at 10:11:14AM -0800, Calvin Owens wrote: > I'm guessing this is related to d245698d727a ("cgroup: Defer task cgroup > unlink until after the task is done switching out")? Is there any other > useful info I can provide? Ah, I need to make css_set_lock a raw one. I'll reply with patches. Thanks. -- tejun