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{
    "id": 831022,
    "url": "http://patchwork.ozlabs.org/api/1.2/patches/831022/?format=api",
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        "url": "http://patchwork.ozlabs.org/api/1.2/projects/7/?format=api",
        "name": "Linux network development",
        "link_name": "netdev",
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    "msgid": "<20171027012443.3306-15-xiyou.wangcong@gmail.com>",
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    "date": "2017-10-27T01:24:41",
    "name": "[net,14/16] net_sched: fix call_rcu() race on act_sample module removal",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
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    "hash": "86abf983c7b471fd2e190333266d959ca5f97683",
    "submitter": {
        "id": 211,
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        "name": "Cong Wang",
        "email": "xiyou.wangcong@gmail.com"
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        "username": "davem",
        "first_name": "David",
        "last_name": "Miller",
        "email": "davem@davemloft.net"
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    "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/20171027012443.3306-15-xiyou.wangcong@gmail.com/mbox/",
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        {
            "id": 10472,
            "url": "http://patchwork.ozlabs.org/api/1.2/series/10472/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=10472",
            "date": "2017-10-27T01:24:27",
            "name": "net_sched: fix races with RCU callbacks",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/10472/mbox/"
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    ],
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    "check": "pending",
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    "tags": {},
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    "headers": {
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        "X-Received": "by 10.98.64.207 with SMTP id f76mr7041371pfd.279.1509067515269; \n\tThu, 26 Oct 2017 18:25:15 -0700 (PDT)",
        "From": "Cong Wang <xiyou.wangcong@gmail.com>",
        "To": "netdev@vger.kernel.org",
        "Cc": "Chris Mi <chrism@mellanox.com>, Cong Wang <xiyou.wangcong@gmail.com>,\n\tYotam Gigi <yotamg@mellanox.com>, Daniel Borkmann <daniel@iogearbox.net>,\n\tJiri Pirko <jiri@resnulli.us>, Jamal Hadi Salim <jhs@mojatatu.com>,\n\t\"Paul E. McKenney\" <paulmck@linux.vnet.ibm.com>",
        "Subject": "[Patch net 14/16] net_sched: fix call_rcu() race on act_sample\n\tmodule removal",
        "Date": "Thu, 26 Oct 2017 18:24:41 -0700",
        "Message-Id": "<20171027012443.3306-15-xiyou.wangcong@gmail.com>",
        "X-Mailer": "git-send-email 2.9.4",
        "In-Reply-To": "<20171027012443.3306-1-xiyou.wangcong@gmail.com>",
        "References": "<20171027012443.3306-1-xiyou.wangcong@gmail.com>",
        "Sender": "netdev-owner@vger.kernel.org",
        "Precedence": "bulk",
        "List-ID": "<netdev.vger.kernel.org>",
        "X-Mailing-List": "netdev@vger.kernel.org"
    },
    "content": "Similar to commit c78e1746d3ad\n(\"net: sched: fix call_rcu() race on classifier module unloads\"),\nwe need to wait for flying RCU callback tcf_sample_cleanup_rcu().\n\nCc: Yotam Gigi <yotamg@mellanox.com>\nCc: Daniel Borkmann <daniel@iogearbox.net>\nCc: Jiri Pirko <jiri@resnulli.us>\nCc: Jamal Hadi Salim <jhs@mojatatu.com>\nCc: \"Paul E. McKenney\" <paulmck@linux.vnet.ibm.com>\nSigned-off-by: Cong Wang <xiyou.wangcong@gmail.com>\n---\n net/sched/act_sample.c | 1 +\n 1 file changed, 1 insertion(+)",
    "diff": "diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c\nindex ec986ae52808..a9f9a2ccc664 100644\n--- a/net/sched/act_sample.c\n+++ b/net/sched/act_sample.c\n@@ -264,6 +264,7 @@ static int __init sample_init_module(void)\n \n static void __exit sample_cleanup_module(void)\n {\n+\trcu_barrier();\n \ttcf_unregister_action(&act_sample_ops, &sample_net_ops);\n }\n \n",
    "prefixes": [
        "net",
        "14/16"
    ]
}