From: SJ Park <sj@kernel.org>
Cc: SJ Park <sj@kernel.org>,
stable@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
Yunjeong Mun <yunjeong.mun@sk.com>,
damon@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [RFC PATCH v2 0/2] mm/damon: avoid division by zero from damos_quota_score()
Date: Sun, 2 Aug 2026 09:20:47 -0700 [thread overview]
Message-ID: <20260802162050.89477-1-sj@kernel.org> (raw)
DAMON_SAMPLE_MTIER and DAMON_LRU_SORT allow the user to trigger division
by zero in damos_quota_score(). Avoid it by adding parameters
validation checks.
Changes from RFC
- RFC: https://lore.kernel.org/20260801211315.2456-1-sj@kernel.org
- Add a fix for DAMON_LRU_SORT.
SJ Park (2):
samples/damon/mtier: error out for zero quota goal target values
mm/damon/lru_sort: error out for >10000 active_mem_bp
mm/damon/lru_sort.c | 2 ++
samples/damon/mtier.c | 3 +++
2 files changed, 5 insertions(+)
base-commit: 51d61cb34d137b13957ce83455c1f596d39e8cfe
--
2.47.3
next reply other threads:[~2026-08-02 16:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-02 16:20 SJ Park [this message]
2026-08-02 16:20 ` [RFC PATCH v2 1/2] samples/damon/mtier: error out for zero quota goal target values SJ Park
2026-08-02 16:20 ` [RFC PATCH v2 2/2] mm/damon/lru_sort: error out for >10000 active_mem_bp SJ Park
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