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Tue, 23 Jun 2020 08:45:37 +0000 To: guro@fb.com Cc: "cam@neo-zeon.de lizefan@huawei.com pgwipeout@gmail.com xiyou.wangcong"@gmail.com, "daniel@iogearbox.net tj@kernel.org netdev"@vger.kernel.org, dsonck92@gmail.com, lizefan@huawei.com, lufq.fnst@cn.fujitsu.com, netdev@vger.kernel.org, pgwipeout@gmail.com, tj@kernel.org, xiyou.wangcong@gmail.com References: <20200622203910.GE301338@carbon.dhcp.thefacebook.com> Subject: Re: [Patch net] cgroup: fix cgroup_sk_alloc() for sk_clone_lock() From: "Zhang,Qiang" Message-ID: Date: Tue, 23 Jun 2020 16:45:28 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 In-Reply-To: <20200622203910.GE301338@carbon.dhcp.thefacebook.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-ClientProxiedBy: HK2PR03CA0065.apcprd03.prod.outlook.com (2603:1096:202:17::35) To BYAPR11MB2632.namprd11.prod.outlook.com (2603:10b6:a02:c4::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [128.224.162.183] (60.247.85.82) by HK2PR03CA0065.apcprd03.prod.outlook.com (2603:1096:202:17::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.11 via Frontend Transport; Tue, 23 Jun 2020 08:45:34 +0000 X-Originating-IP: [60.247.85.82] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1f64d63b-7e66-4147-c4e6-08d81751ccb7 X-MS-TrafficTypeDiagnostic: BYAPR11MB3718: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; X-Forefront-PRVS: 04433051BF X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: v2xlALMieWtme8TH7HtYiwtmbQdj8Ofq3IgbRub8EiKIhMkzGCUUtoD0qvHTaeAeQAFRqN7vx9WhbyIMwk8eXpZZT56tyHGSW+GIkhVz5/P05kTZT5SF997yDkU6DxUcAx9B+5WZPyNxI4lqc0HjL2Xmyx+74Jaea3XgnWUoZnEGyf1MDUDfX3D8gLs8CGVTO+PJ0VRpPTtcwnhhpoyT1dlNE70U4zpFlnAcxT7jxrieCneS1uS8AyoLE8N1+zGS6M/pq5AelfPZ3fS6e7wQejpIoHi/Ic7iKUoj6wfGBuR8UaV8klCsnAjiaAWLVS5nk60TxfJuvegLKE7T8tQmmzZesra8AeSOz/xcX8cOXXg3A6EjC4iMUcUzc7u4mR6qLJ4z3/71zxbGX6P2JUYdzjgSZDQKG0fIfvtyEDYqTtjKg6Qz7xYsHOlgLn7YePOa X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR11MB2632.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(136003)(39850400004)(396003)(346002)(376002)(366004)(26005)(8936002)(5660300002)(31696002)(8676002)(2906002)(86362001)(66556008)(66946007)(16526019)(6706004)(186003)(66476007)(6916009)(36756003)(7416002)(6666004)(16576012)(2616005)(956004)(4326008)(83380400001)(31686004)(478600001)(316002)(52116002)(45080400002)(6486002)(78286006)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: oAJ994WiyyiYDCZw5R8cP4sN0RaPhcV7ixep3701ikyzwCZ7133oIcPNy7eRBiHVkIC4DM/Z7Cu4zgp3RK0NPQ/+qr2JNAOmgG+siaB6Y6XlHn8r4egMHcp6PzSVbkgPJm1ZuNwpzzRVLGqaeFIrW7CzKdQ7Dfpiy/8tGejEQX5mHyT3KSuClgocAUF13NbxHXfdV/J4nnPV2/pL0kKwG3K6pLPXOOpH2e17sr1QRxcK2BdWvs8eBqRTK5IIO9FBbAaQpJ2dNmoTHdWedzBT+YzrdC2WA6GvXdTk4AnZmbFEcWvYxe0s5lnBfGzqUdsYBOmB9o2j8Eu3o6awEntEmuqdVmKjxL5MfpmSihRi/+BWFS/Puah22JkurMFxoXhTe7Xy3LPzfRuuXu6yP+ZfNQZB7tlvbtOM8u8cHJJmjm+p6PXmszDeEc1/ZBkAII86o1X5cyxXbBt+1R92Ue8V2JzG9N2oUXjYTscK1HTIeJA= X-OriginatorOrg: windriver.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1f64d63b-7e66-4147-c4e6-08d81751ccb7 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jun 2020 08:45:36.9229 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ddb2873-a1ad-4a18-ae4e-4644631433be X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8HhXYf5MROphVuekj8sTldeQclK+L3vlLsvUO1jrxFa3PudWf6yRldpDB8wg2NyQ+Jik4etzGRyrB62XxhuHkSUDr+G/l+61Ow/WAYwdxWI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB3718 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org There are some message in kernelv5.4, I don't know if it will help. demsg: cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation IPv6: ADDRCONF(NETDEV_CHANGE): veth4c31d8d2: link becomes ready cni0: port 1(veth4c31d8d2) entered blocking state cni0: port 1(veth4c31d8d2) entered disabled state device veth4c31d8d2 entered promiscuous mode cni0: port 1(veth4c31d8d2) entered blocking state cni0: port 1(veth4c31d8d2) entered forwarding state IPv4: martian source 10.244.1.2 from 10.244.1.2, on dev cni0 ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06 IPv4: martian source 10.244.1.2 from 10.244.1.2, on dev eth0 ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06 IPv4: martian source 10.244.1.1 from 10.244.1.2, on dev eth0 ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06 IPv6: ADDRCONF(NETDEV_CHANGE): vethb556dc7b: link becomes ready cni0: port 2(vethb556dc7b) entered blocking state cni0: port 2(vethb556dc7b) entered disabled state device vethb556dc7b entered promiscuous mode cni0: port 2(vethb556dc7b) entered blocking state cni0: port 2(vethb556dc7b) entered forwarding state IPv4: martian source 10.244.1.3 from 10.244.1.3, on dev eth0 ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06 IPv4: martian source 10.244.1.1 from 10.244.1.3, on dev eth0 ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06 IPv4: martian source 10.244.1.2 from 10.244.1.3, on dev eth0 ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06 -----------[ cut here ]----------- percpu ref (cgroup_bpf_release_fn) <= 0 (-12) after switching to atomic WARNING: CPU: 1 PID: 0 at lib/percpu-refcount.c:161 percpu_ref_switch_to_atomic_rcu+0x12a/0x140 Modules linked in: ipt_REJECT nf_reject_ipv4 vxlan ip6_udp_tunnel udp_tunnel xt_statistic xt_nat xt_tcpudp iptable_mangle xt_comment xt_mark xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user iptable_nat xt_addrtype iptable_filter ip_tables xt_conntrack x_tables br_netfilter bridge stp llc bnep iTCO_wdt iTCO_vendor_support watchdog intel_powerclamp gpio_ich mgag200 drm_vram_helper drm_ttm_helper ttm i2c_i801 coretemp lpc_ich acpi_cpufreq sch_fq_codel openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nfsd CPU: 1 PID: 0 Comm: swapper/1 Tainted: G I 5.7.0-yoctodev-standard #1 Hardware name: Intel Corporation S5520HC/S5520HC, BIOS S5500.86B.01.10.0025.030220091519 03/02/2009 RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x12a/0x140 Code: 80 3d b1 42 3b 01 00 0f 85 56 ff ff ff 49 8b 54 24 d8 48 c7 c7 68 57 1d a9 c6 05 98 42 3b 01 01 49 8b 74 24 e8 e8 ea 14 aa ff <0f> 0b e9 32 ff ff ff 0f 0b eb 97 cc cc cc cc cc cc cc cc cc cc cc RSP: 0018:ffff996183268e90 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 7ffffffffffffff3 RCX: 0000000000000000 RDX: 0000000000000102 RSI: ffffffffa9794aa7 RDI: 00000000ffffffff RBP: ffff996183268ea8 R08: ffffffffa9794a60 R09: 0000000000000047 R10: 0000000080000001 R11: ffffffffa9794a8c R12: ffff95855904fef0 R13: 000023dc1ba33080 R14: ffff996183268ee0 R15: ffff95855904fef0 FS: 0000000000000000(0000) GS:ffff958563c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f62622f8658 CR3: 000000044fc0a000 CR4: 00000000000006e0