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h=From:To:Cc:Subject:Date; b=RuglQjDn3bYdgeg6ncYPVDXHbOj7ciTiM64J4RZbSLqjMtlMwvz7yMWrfYdvIeOm5 eFVRrwi8/McVixBoxsMIiXdjVOjlGsM0Y+Q1U3XRa7w6FWMExDLA04lNLgFrQrUO32 Xd7InuA11qiY1xvn82GQyp/+Jb1HXcYkfLhLdsIj0laRWtfP1M/NgMeZbqnbSUN2EC +hWsHlRvOG92a7vu5kBIExeAVzDq8gPaD6TQpOfqzl1ELHDdVs9FivdGYlql5ATWFx T4cNEgTzw7xp0YXRNQ+BpOZJ6LpLKlSH9a1Blg/OYlLMwfK0MZghXQ3PchL3oDcEQX oA1Ovv72fRKgw== From: SJ Park To: Cc: SJ Park , stable@vger.kernel.org, Andrew Morton , Brendan Higgins , David Gow , SeongJae Park , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 0/7] mm/damon: fix uninitialized DAMOS field and kunit exec expectation bugs Date: Thu, 16 Jul 2026 17:30:14 -0700 Message-ID: <20260717003022.119437-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 786DBC0009 X-Stat-Signature: t3kfgcqmycfyzdn5r538ueeyfaj6tocp X-HE-Tag: 1784248232-635618 X-HE-Meta: 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 8WMUQy7v pGz0znOTAYuKZFXAaD2ey1lhteEhPsJkzRtCJ5p7fckU7BSdfqNYZOll6zekMMK3dYHHQMsS9Z1+jLIr+hahVydh1FIp10dV0l10M+o7u3Zf1oU03L7naHxYXRdjQGKGju6xztR6+R/ZODRG2y5df2n9p8jij8Fny515vtK3LFvNY+TJGbwGAlgLEISOpqUxb/tszGCHSatzBvrM= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Fix a few Sashiko-found unurgent bugs. Patch 1 fixes use of uninitialized damos->last_applied field. Patches 2-7 fix DAMON kunit tests that do invalid memory access under test failures. The bugs are better to be fixed and eventually merged into stable@ kernel. That said, the fixes are arguably not urgent. Patch 1 only introduces negligible DAMOS efficiency degradation in occasional cases. Kunit fixes could introduce quite bad consequences but those are test code that affect only test run setups. SJ Park (7): mm/damon/core: initialize damos->last_applied mm/damon/core-kunit: check region count before testing in split_at() mm/damon/vaddr-kunit: check region count in three_regions test mm/damon/core-kunit: handle region split failure in filter_out() mm/damon/core-kunit: skip wrong dest walk in commit_dests_for() mm/damon/core-kunit: skip wrong quota goal walk in commit_quota_goals() mm/damon/core-kunit: skip wrong region walk in commit_target_regions() mm/damon/core.c | 1 + mm/damon/tests/core-kunit.h | 28 ++++++++++++++++++++++++++-- mm/damon/tests/vaddr-kunit.h | 5 +++++ 3 files changed, 32 insertions(+), 2 deletions(-) base-commit: 1ce4cbd62f48552188b3f6fac8a14b709e97b7be -- 2.47.3