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 9FE3433554B for ; Mon, 5 Jan 2026 11:06:09 +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=1767611169; cv=none; b=SPD/Qd+tAiYSlQbVhO52DKZJa+X+R2jsaj0QYdziAg0RvD4cULAKtknnyiL2dfy+TtfVOHxgsK8sOAuaoCd7vRyb9cQ1u/1PHNUUZxeyc9CPmlUFjB4E0W+mB2PU5me14Hingl6VS5VGMflbdT+pwLa5/VRyyjZroS8xlpUUZQ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767611169; c=relaxed/simple; bh=Nu8O57vTlis9wFrQvHZqPoRyQ+P46GCT26rzCcC4fpQ=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=YKVsYF6g4uPPodLIQijrxHLPkfJcdRSPv7FqOdXX7jlaOkfbN6T4IWheoe5aL5dFuFIeJJO6xxXNz8AmHeF73EmGL9qEqbpwnizzA26sXYvmoc3OX4uBb7hqsYGpPRdaQKGjg8yKzxHYMHMnbUQvXqFyGj1Sy8PyD4ZLVf396Q4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jyuWtL00; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jyuWtL00" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6030C19425; Mon, 5 Jan 2026 11:06:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767611169; bh=Nu8O57vTlis9wFrQvHZqPoRyQ+P46GCT26rzCcC4fpQ=; h=Subject:To:Cc:From:Date:From; b=jyuWtL00Jb0tbTfMCFJfmiHPtlJN1u5TgqUhCrDgAKtd5CbLS6QJvmNmt08yMCKTn GfemfuhLXDkDkKhzl0YrBdhg6W9xuT+Z1nJIKxNv6ZlqgS3vA8zOL0ggJAKTNwXOLD STnl+BDCBIDCq5QHQWwwDGz26yqSLFf47FDMcN6w= Subject: FAILED: patch "[PATCH] mm/damon/tests/core-kunit: handle alloc failures in" failed to apply to 6.6-stable tree To: sj@kernel.org,akpm@linux-foundation.org,brendan.higgins@linux.dev,davidgow@google.com,stable@vger.kernel.org,wangkefeng.wang@huawei.com Cc: From: Date: Mon, 05 Jan 2026 12:06:05 +0100 Message-ID: <2026010505-yiddish-alienable-7ae9@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 8cf298c01b7fdb08eef5b6b26d0fe98d48134d72 # git commit -s git send-email --to '' --in-reply-to '2026010505-yiddish-alienable-7ae9@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 8cf298c01b7fdb08eef5b6b26d0fe98d48134d72 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Sat, 1 Nov 2025 11:20:05 -0700 Subject: [PATCH] mm/damon/tests/core-kunit: handle alloc failures in damon_test_update_monitoring_result() damon_test_update_monitoring_result() is assuming all dynamic memory allocation in it will succeed. Those are indeed likely in the real use cases since those allocations are too small to fail, but theoretically those could fail. In the case, inappropriate memory access can happen. Fix it by appropriately cleanup pre-allocated memory and skip the execution of the remaining tests in the failure cases. Link: https://lkml.kernel.org/r/20251101182021.74868-12-sj@kernel.org Fixes: f4c978b6594b ("mm/damon/core-test: add a test for damon_update_monitoring_results()") Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Cc: Kefeng Wang Cc: [6.3+] Signed-off-by: Andrew Morton diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index e38c95f86a68..10c9953581ee 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -429,6 +429,9 @@ static void damon_test_update_monitoring_result(struct kunit *test) struct damon_attrs new_attrs; struct damon_region *r = damon_new_region(3, 7); + if (!r) + kunit_skip(test, "region alloc fail"); + r->nr_accesses = 15; r->nr_accesses_bp = 150000; r->age = 20;