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 1AC2515ADB4; Fri, 9 Jan 2026 12:22:49 +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=1767961369; cv=none; b=kTZBhKTeyDXFXsMzAlKbage+tQuywjAvO/NKNRWis3Svimv7eMGCS8X+ls2fPbVKuxNuSk+6D8xfg1Ee6OlUhZ+vwCIbh7hhWDCT9ekt+2d6HqnwUqcJMd6zush/S83pRyCuyMbArrB0Wz4PBBPeiKb7BGNupCuATBfCneQ19H4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767961369; c=relaxed/simple; bh=6o6opTAy12UVqvLeUysvUtjNqis+16t9IcM2/Tbt2tM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QRUmQam+BjBfpt+DWBzkfv+EN0OMr2EPoE1g4oOo85FFJXU/9uA6PY2oCRkiWWjJtaGQHb7WC4xtpumS5/J5wAX1d1jRwGUMYYx0SU9AFJRmwh+FbPqGJIqKcihhcneTN9UqjjSluRPD0ysI3ddghPmnaWplgZkUYJznOFxEd/A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=uwPNTzWO; 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="uwPNTzWO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92297C4CEF1; Fri, 9 Jan 2026 12:22:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767961369; bh=6o6opTAy12UVqvLeUysvUtjNqis+16t9IcM2/Tbt2tM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uwPNTzWOKAlFPcT5VNqoNdZPCtKhQekfhoYGAiR6MGRY4wpja6Ick60toITuoBY+P t2aegwIoI9tzqTU67HH8bRK+KDrBWe22BlvymQFQCHMxWfeaJSx12P9yARzEdhDic0 uOTJHLMf896r1moFBuhOlLFtG8XLAx6leyH2S530= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, SeongJae Park , Brendan Higgins , David Gow , Kefeng Wang , Andrew Morton Subject: [PATCH 6.6 728/737] mm/damon/tests/core-kunit: handle alloc failure on damon_test_set_attrs() Date: Fri, 9 Jan 2026 12:44:27 +0100 Message-ID: <20260109112201.489727629@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112133.973195406@linuxfoundation.org> References: <20260109112133.973195406@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: SeongJae Park commit 915a2453d824a9b6bf724e3f970d86ae1d092a61 upstream. damon_test_set_attrs() 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/20251101182021.74868-13-sj@kernel.org Fixes: aa13779be6b7 ("mm/damon/core-test: add a test for damon_set_attrs()") Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Cc: Kefeng Wang Cc: [6.5+] Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- mm/damon/core-test.h | 3 +++ 1 file changed, 3 insertions(+) --- a/mm/damon/core-test.h +++ b/mm/damon/core-test.h @@ -413,6 +413,9 @@ static void damon_test_set_attrs(struct .sample_interval = 5000, .aggr_interval = 100000,}; struct damon_attrs invalid_attrs; + if (!c) + kunit_skip(test, "ctx alloc fail"); + KUNIT_EXPECT_EQ(test, damon_set_attrs(c, &valid_attrs), 0); invalid_attrs = valid_attrs;