From: SeongJae Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SeongJae Park <sj@kernel.org>, Shuah Khan <shuah@kernel.org>,
damon@lists.linux.dev, kernel-team@meta.com,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-mm@kvack.org, stable@vger.kernel.org, #@kvack.org,
6.3.x@kvack.org
Subject: [PATCH 0/2] mm/damon: fix memory leak in memcg_path sysfs file
Date: Thu, 19 Jun 2025 11:36:06 -0700 [thread overview]
Message-ID: <20250619183608.6647-1-sj@kernel.org> (raw)
Users can leak memory by repeatedly writing a string to DAMOS sysfs
memcg_path file. Fix it (patch 1) and add a selftest (patch 2) to avoid
reoccurrance of the bug.
SeongJae Park (2):
mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path
on write
selftets/damon: add a test for memcg_path leak
mm/damon/sysfs-schemes.c | 1 +
tools/testing/selftests/damon/Makefile | 1 +
.../selftests/damon/sysfs_memcg_path_leak.sh | 43 +++++++++++++++++++
3 files changed, 45 insertions(+)
create mode 100755 tools/testing/selftests/damon/sysfs_memcg_path_leak.sh
base-commit: 05b89e828eb4f791f721cbdc65f36e1a8287a9d3
--
2.39.5
next reply other threads:[~2025-06-19 18:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 18:36 SeongJae Park [this message]
2025-06-19 18:36 ` [PATCH 1/2] mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write SeongJae Park
2025-06-19 18:36 ` [PATCH 2/2] selftets/damon: add a test for memcg_path leak SeongJae Park
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