From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 21E32BA45; Mon, 21 Sep 2026 00:13:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789949586; cv=none; b=MSajB4mXGktv8krkYNfwhu2+vyNR2Yn+tUgt3JXZUGG2RoS57qCkAdw4K1kzUiPsjg75tAqoja7+sDTZUikIyaQ8GcX/ed5RQ1/V+m9K8VR0PPX/Y9Clgb+lRaCsMAFzXqhef57TDqHWBICOHRnxm1VF8G9is6UUL9e0H9Kj+h0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789949586; c=relaxed/simple; bh=70U/mKZZCoK204siZkA8JxgieTMUxnMu7/kNXmbiIks=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nQUyHFtPgEBiaWjjGqmz+hpeXxKpgFWUxn98WiSee71vZMoSZMbbskPlhWGoYETafPSmbak+tVPdvt1r9JgURUpaq/lmQh4WnCVL3QvM/9E2oNTpabTE27eIab3dP+arR7rLh3CmhaZyFnEDRevGd7/LJbZxN09DM8tILmZ7Eb4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Zekdbm6U; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Zekdbm6U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95B1D1F000FF; Mon, 21 Sep 2026 00:13:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789949584; bh=YN1oN1wZnzFbnwYA5jad0HdKingtmleOV9lWTzSMxqg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Zekdbm6U3Pm3+GnP3esDQeN+UW1vPdodY8flZQCdjCMOD6RKoyViRsXYWRYtuaxYV IKbXsOqZajn9xoNw5w8vnRU1Wp7x2Y6KntYt/Rm+iwx8xuvzxAg91z3WM0d5SD1cDc 8Cizn6stzh2uDLOSX+PdpMrpodBFoZ0q7MWUAS7NPVZNYn8dBS33ASguZetCFhsLUA 6Q95/JkGZ3Tr2sLoGqW4PHZvG16UEDkeYHpBMK24Gav9oqWHxt2vD0Gj6EVy1dv3LS hIvKjOq/A1B7azl+aJ50i1/I3TKFgXujLcHOLItmiaRONm7EZIdLKpBVhL/BYTGkfB Y10uPNd2B6rEQ== From: Sasha Levin To: David Lomas , gregkh@linuxfoundation.org Cc: Sasha Levin , stable@vger.kernel.org, rafael.j.wysocki@intel.com, matthew.leach@collabora.com, superm1@kernel.org, linux-pm@vger.kernel.org, regressions@lists.linux.dev Subject: Re: [PATCH 6.18 0167/1250] PM: hibernate: call preallocate_image() after freeze prepare Date: Sun, 20 Sep 2026 20:13:01 -0400 Message-ID: <20260920200637.10dc42c1bb6a@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Sat, Sep 19, 2026 at 02:47:25PM +0100, David Lomas wrote: > Upstream commit 783c8109844503bd1c35dab41b6d5fd074a9f131 deadlocks > hibernation entry on my machine (7.2.4, Dell XPS 13 9360, 8 GB, zswap > on) whenever the system has been in use for some hours: the hibernate > call never returns and the laptop sits warm with no image written, Thank you for the report! > Captured with SysRq (w) after ~8 minutes hung. The hibernating task is > in the direct-reclaim throttle waiting for kswapd, which was frozen 27 > ms earlier by freeze_kernel_threads(), which this commit moved ahead > of hibernate_preallocate_memory(): I've dropped the patch from the 6.18 queue. 783c8109 has not appeared in a released 6.18.y yet (v6.18.52 is the latest), so dropping it from the queue is enough to keep 6.18.y clear of this. -- Thanks, Sasha