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 49485314D0C; Wed, 17 Sep 2025 19:19:49 +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=1758136790; cv=none; b=l20cMfhjsSkdKsX+CsNCQbqiV9nSRrmrwX6vgG9J/kyKD7rre7HC9bbCzABXCG+tojkmMfKXLLn2sopC9Bih0IqFcw1dddWPBwSLmkixRJw6ti4banKsKnzhdchItB+anL+wXqA8C9lVdRnTPz9HnQO7HfM6JNCJs+NdPNtBB+4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758136790; c=relaxed/simple; bh=8vOSHuxDh5rS2TQSsLVX8UZJhtTlo0eEN9UUzTM1Sms=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=Mtz5sw3VRh97kk1q39KRxYo2/rTxFnkLst8mFH0XfX6N8BPhW9eQtypjF5+Gq2UIZuIpFgNfQ4BQZQE/9yaMplAtL22Afq2r5ktL9YDDtAAvKgfAtgdtuDpVZS5upMWMcqvTGN4yiQ/ULFZr6UYTOuUpZApoy3Yfx7qMSGcw5Cw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qr03+UE9; 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="qr03+UE9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD5BCC4CEE7; Wed, 17 Sep 2025 19:19:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758136789; bh=8vOSHuxDh5rS2TQSsLVX8UZJhtTlo0eEN9UUzTM1Sms=; h=Date:From:To:Cc:Subject:From; b=qr03+UE9m4rMoVlZL9vwZ0Bu9KwplUd2GH0IqH1Dqhgp1vR7wEiQmMUF6uKg/26+4 iLZfaJWdSPuhtoyQjxzNCLYwl2O0PWpCdwTKs8NC31jvEcQdNFwkjW5rw4cWjtVL56 aaj0P3bvVLw2E1jdTw9CbhVBxA72bITKgsS48h86m+Zz549hiqIRci2rwoEXUXqoaM omP0W8cNIUZtubCWf3fhi80I+v/Xs1OBdjWje09TS6KULqLK3DaKpf46ywuAI0W0bf G0tmCCi8uxEwUOZ13px6WrJ5PfyRdwulUuZ4oJckXld12b66mLRKwYiQPs6Y0/920F GzKczMNZE2S2A== Date: Wed, 17 Sep 2025 09:19:48 -1000 From: Tejun Heo To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Johannes Weiner , Michal =?iso-8859-1?Q?Koutn=FD?= , cgroups@vger.kernel.org Subject: [GIT PULL] cgroup: Fixes for v6.17-rc6 Message-ID: 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 The following changes since commit 6563623e604e3e235b2cee71190a4972be8f986b: docs: cgroup: fixed spelling mistakes in documentation (2025-08-12 10:52:28 -1000) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git/ tags/cgroup-for-6.17-rc6-fixes for you to fetch changes up to 94a4acfec14615e971eb2c9e1fa6c992c85ff6c6: cgroup/psi: Set of->priv to NULL upon file release (2025-08-22 07:47:43 -1000) ---------------------------------------------------------------- cgroup: Fixes for v6.17-rc6 This contains two cgroup changes. Both are pretty low risk. - Fix deadlock in cgroup destruction when repeatedly mounting/unmounting perf_event and net_prio controllers. The issue occurs because cgroup_destroy_wq has max_active=1, causing root destruction to wait for CSS offline operations that are queued behind it. The fix splits cgroup_destroy_wq into three separate workqueues to eliminate the blocking. - Set of->priv to NULL upon file release to make potential bugs to manifest as NULL pointer dereferences rather than use-after-free errors. ---------------------------------------------------------------- Chen Ridong (2): cgroup: split cgroup_destroy_wq into 3 workqueues cgroup/psi: Set of->priv to NULL upon file release kernel/cgroup/cgroup.c | 44 +++++++++++++++++++++++++++++++++++++------- 1 file changed, 37 insertions(+), 7 deletions(-) -- tejun