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 095962571A0; Sun, 28 Dec 2025 21:49:05 +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=1766958549; cv=none; b=lF652fjL7BeG4LWL+SBYlLs0Upxb+YiiG32yaN/eew9iPDkj791ijfL1V5XDk2BtqYTuhVjpNNH3rY9SWMqf1dMiJwK3JC24rpswnpPYBkUziClCQEVq/C6Gv9zhJbpmec5J4DAA3EGuIyHwrA6+eQy8matYAsAzhcqHkbxx5Hs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766958549; c=relaxed/simple; bh=WiKkNqaVGyD+3WP2nxdZU5QauiKRt1HwW9QgQv4ogP8=; h=Date:To:From:Subject:Message-Id; b=VPPzXFrn/i0muoGDijjGOlCeszqjcuIKW5RbxUlV/SKptacYYfiqnK7P/y+Zl3+blVqA1dj/PzD46ZGJhAk2f7Oi0WeKMgL86Jcpty0VAsKqtbJZ+pcub0DysHfxWuAkFNfpuavWrZT8GH1buwV5G5RB9nOzKahcETWq9qW4YBI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=r/AONAng; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="r/AONAng" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F91EC4CEFB; Sun, 28 Dec 2025 21:49:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1766958545; bh=WiKkNqaVGyD+3WP2nxdZU5QauiKRt1HwW9QgQv4ogP8=; h=Date:To:From:Subject:From; b=r/AONAng2CME21ueaY7RCdNudRp1FO1X7DtBInE6uCPSZW39jWLZTR3hDgDlkCf0W KPVSabdP17gwrcrQ3tiWUzMs4v5Z5AIczCOwl0aLPmJ/gUSpEvQWDkbyW9fVh2ZVEE Eflwy5iEGrm0ZqJ747nO5DNusINVzVXoe7182hm8= Date: Sun, 28 Dec 2025 13:49:04 -0800 To: mm-commits@vger.kernel.org,stable@vger.kernel.org,jiapeng.chong@linux.alibaba.com,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-sysfs-cleanup-attrs-subdirs-on-context-dir-setup-failure.patch added to mm-new branch Message-Id: <20251228214905.7F91EC4CEFB@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure has been added to the -mm mm-new branch. Its filename is mm-damon-sysfs-cleanup-attrs-subdirs-on-context-dir-setup-failure.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-cleanup-attrs-subdirs-on-context-dir-setup-failure.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: SeongJae Park Subject: mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure Date: Wed, 24 Dec 2025 18:30:35 -0800 When a context DAMON sysfs directory setup is failed after setup of attrs/ directory, subdirectories of attrs/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked. Cleanup the directories under such failures. Link: https://lkml.kernel.org/r/20251225023043.18579-3-sj@kernel.org Fixes: c951cd3b8901 ("mm/damon: implement a minimal stub for sysfs-based DAMON interface") Signed-off-by: SeongJae Park Cc: chongjiapeng Cc: # 5.18.x Signed-off-by: Andrew Morton --- mm/damon/sysfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/mm/damon/sysfs.c~mm-damon-sysfs-cleanup-attrs-subdirs-on-context-dir-setup-failure +++ a/mm/damon/sysfs.c @@ -950,7 +950,7 @@ static int damon_sysfs_context_add_dirs( err = damon_sysfs_context_set_targets(context); if (err) - goto put_attrs_out; + goto rmdir_put_attrs_out; err = damon_sysfs_context_set_schemes(context); if (err) @@ -960,7 +960,8 @@ static int damon_sysfs_context_add_dirs( put_targets_attrs_out: kobject_put(&context->targets->kobj); context->targets = NULL; -put_attrs_out: +rmdir_put_attrs_out: + damon_sysfs_attrs_rm_dirs(context->attrs); kobject_put(&context->attrs->kobj); context->attrs = NULL; return err; _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-remove-call_control-in-inactive-contexts.patch mm-damon-core-introduce-nr_snapshots-damos-stat.patch mm-damon-sysfs-schemes-introduce-nr_snapshots-damos-stat-file.patch docs-mm-damon-design-update-for-nr_snapshots-damos-stat.patch docs-admin-guide-mm-damon-usage-update-for-nr_snapshots-damos-stat.patch docs-abi-damon-update-for-nr_snapshots-damos-stat.patch mm-damon-update-damos-kerneldoc-for-stat-field.patch mm-damon-core-implement-max_nr_snapshots.patch mm-damon-sysfs-schemes-implement-max_nr_snapshots-file.patch docs-mm-damon-design-update-for-max_nr_snapshots.patch docs-admin-guide-mm-damon-usage-update-for-max_nr_snapshots.patch docs-abi-damon-update-for-max_nr_snapshots.patch mm-damon-core-add-trace-point-for-damos-stat-per-apply-interval.patch mm-damon-sysfs-cleanup-intervals-subdirs-on-attrs-dir-setup-failure.patch mm-damon-sysfs-cleanup-attrs-subdirs-on-context-dir-setup-failure.patch mm-damon-sysfs-scheme-cleanup-quotas-subdirs-on-scheme-dir-setup-failure.patch mm-damon-sysfs-scheme-cleanup-access_pattern-subdirs-on-scheme-dir-setup-failure.patch