From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E3E63175A7E; Fri, 17 Jul 2026 00:30:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784248232; cv=none; b=dO8HWKUGBFy+aIC32VHHKyn+gWKLsmZIovQ328l1v3POvzuhbvnWqinwtW5AAa/hxkEzWnZy6rkMj3lQ3j+0n4egaNW0QXQYy16f5iL1PMWfxgMYzfzArF1wXa/hL/zcVEv1FypqAufFc+Pw1j+c9ITBqc1j12Jkn5zjQkzwqUk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784248232; c=relaxed/simple; bh=bCQC2Q9MKCS3P93oZ/w9/HKpPdBZiG6cBaRE49rt4Sc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qqeScimj/Hl5VFkJFszah1K7Nia0tNsiuZIyC2oubix7MKTwfSY+pgMoc24v9thsAY0m7zBCa+R2WWjdQfPbvt6K7WnYVpaiETR/HDPSw/N6FUHXT7cIW6DLNjPqgbFopM3C8UxF5EtuhT/9hQ4Hz//4x9aNjnaMuDpL2Vlykw0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RuglQjDn; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RuglQjDn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D3C11F000E9; Fri, 17 Jul 2026 00:30:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784248231; bh=xM5gDQraqqXBT37mFYIx8WuUHVtDjm2kQWuZX7uenPU=; 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 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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