From patchwork Tue Sep 12 11:03:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13381425 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10960CA0ECA for ; Tue, 12 Sep 2023 11:05:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rAPqIQsSPzSwj0ctE9lVWb983QCOI52gkxrX1JRDDi4=; b=JJSXsA88L+FMGY O1WwbHQpUVlvTpNrlx63xmYlv6KpklX6znNVMgoRSbNNL5e8RluJV+l2wfDos/MhiCt9aPi7waZkD 6Unc9/iTUFt2Svn7ybq2wxjpt5TYlfRZyEKyMgiiMhLe6yafnXjc4fCHKuKtPom9WZ59zEMzRzVNC ELh91XpIBR4XylrLysOCcv+LLGUdF7ndtZ/ls/60kpfVFw4ifBQPSW8y0XqMTvie8NZ35JLlXPFPf awcqoau6Sg9zvwiZaVCw54Rr+tCF1jHGxxyqWFtqJhQFwGTsDpqTJEDxJVPKj/jDqt7kyh9R1beuq WBK9NDfS2/c4AKfiSdUA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qg1CY-0037tE-2p; Tue, 12 Sep 2023 11:05:02 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qg1CW-0037pr-0F for linux-arm-kernel@lists.infradead.org; Tue, 12 Sep 2023 11:05:01 +0000 Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RlLGn5jKFztSKx; Tue, 12 Sep 2023 19:00:49 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 12 Sep 2023 19:04:55 +0800 From: Jinjie Ruan To: , , , , , , , , , CC: Subject: [PATCH net v3 3/5] net: microchip: sparx5: Fix possible memory leak in vcap_api_encode_rule_test() Date: Tue, 12 Sep 2023 19:03:08 +0800 Message-ID: <20230912110310.1540474-4-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230912110310.1540474-1-ruanjinjie@huawei.com> References: <20230912110310.1540474-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230912_040500_538008_BE065865 X-CRM114-Status: GOOD ( 10.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Inject fault while probing kunit-example-test.ko, the duprule which is allocated in vcap_dup_rule() and the vcap enabled port which is allocated in vcap_enable() of vcap_enable_lookups in vcap_api_encode_rule_test() is not freed, and it cause the memory leaks below. Use vcap_enable_lookups() with false arg to free the vcap enabled port as other drivers do it. And use vcap_del_rule() to free the duprule. unreferenced object 0xffff677a0278bb00 (size 64): comm "kunit_try_catch", pid 388, jiffies 4294895987 (age 1101.840s) hex dump (first 32 bytes): 18 bd a5 82 00 80 ff ff 18 bd a5 82 00 80 ff ff ................ 40 fe c8 0e be c6 ff ff 00 00 00 00 00 00 00 00 @............... backtrace: [<000000007d53023a>] slab_post_alloc_hook+0xb8/0x368 [<0000000076e3f654>] __kmem_cache_alloc_node+0x174/0x290 [<0000000034d76721>] kmalloc_trace+0x40/0x164 [<00000000013380a5>] vcap_enable_lookups+0x1c8/0x70c [<00000000bbec496b>] vcap_api_encode_rule_test+0x2f8/0xb18 [<000000002c2bfb7b>] kunit_try_run_case+0x50/0xac [<00000000ff74642b>] kunit_generic_run_threadfn_adapter+0x20/0x2c [<000000004af845ca>] kthread+0x124/0x130 [<0000000038a000ca>] ret_from_fork+0x10/0x20 unreferenced object 0xffff677a027803c0 (size 192): comm "kunit_try_catch", pid 388, jiffies 4294895988 (age 1101.836s) hex dump (first 32 bytes): 00 12 7a 00 05 00 00 00 0a 00 00 00 64 00 00 00 ..z.........d... 00 00 00 00 00 00 00 00 d8 03 78 02 7a 67 ff ff ..........x.zg.. backtrace: [<000000007d53023a>] slab_post_alloc_hook+0xb8/0x368 [<0000000076e3f654>] __kmem_cache_alloc_node+0x174/0x290 [<0000000034d76721>] kmalloc_trace+0x40/0x164 [<00000000c1010131>] vcap_dup_rule+0x34/0x14c [<00000000d43c54a4>] vcap_add_rule+0x29c/0x32c [<0000000073f1c26d>] vcap_api_encode_rule_test+0x304/0xb18 [<000000002c2bfb7b>] kunit_try_run_case+0x50/0xac [<00000000ff74642b>] kunit_generic_run_threadfn_adapter+0x20/0x2c [<000000004af845ca>] kthread+0x124/0x130 [<0000000038a000ca>] ret_from_fork+0x10/0x20 Fixes: c956b9b318d9 ("net: microchip: sparx5: Adding KUNIT tests of key/action values in VCAP API") Signed-off-by: Jinjie Ruan --- v3: - Update the commit message, "export" -> "vcap enabled port" --- drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c index f268383a7570..8c61a5dbce55 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c @@ -1439,6 +1439,10 @@ static void vcap_api_encode_rule_test(struct kunit *test) ret = list_empty(&is2_admin.rules); KUNIT_EXPECT_EQ(test, false, ret); KUNIT_EXPECT_EQ(test, 0, ret); + + vcap_enable_lookups(&test_vctrl, &test_netdev, 0, 0, + rule->cookie, false); + vcap_free_rule(rule); /* Check that the rule has been freed: tricky to access since this @@ -1449,6 +1453,8 @@ static void vcap_api_encode_rule_test(struct kunit *test) KUNIT_EXPECT_EQ(test, true, ret); ret = list_empty(&rule->actionfields); KUNIT_EXPECT_EQ(test, true, ret); + + vcap_del_rule(&test_vctrl, &test_netdev, id); } static void vcap_api_set_rule_counter_test(struct kunit *test)