Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19;
Subject: Re: [PATCH net-next v5 0/4] tun/tap: use kfree_skb_reason() to trace
 dropped skb
To:     David Miller <davem@davemloft.net>
Cc:     netdev@vger.kernel.org, bpf@vger.kernel.org,
        linux-kernel@vger.kernel.org, kuba@kernel.org, rostedt@goodmis.org,
        mingo@redhat.com, ast@kernel.org, daniel@iogearbox.net,
        andrii@kernel.org, imagedong@tencent.com,
        joao.m.martins@oracle.com, joe.jin@oracle.com, dsahern@gmail.com,
        edumazet@google.com
References: <20220304063307.1388-1-dongli.zhang@oracle.com>
 <20220304.122547.1342402483120688005.davem@davemloft.net>
From:   Dongli Zhang <dongli.zhang@oracle.com>
Message-ID: <578fc0bd-56bd-e644-6cf8-1c6b203f0f8b@oracle.com>
Date:   Fri, 4 Mar 2022 06:52:08 -0800
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
 Thunderbird/78.6.1
In-Reply-To: <20220304.122547.1342402483120688005.davem@davemloft.net>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?azhlQ3l1V2JCdmttRzluWFBhQ1JXc0IvZitWNzRTMnF2eDdhZ09xN2NMVmc4?=
 =?utf-8?B?ZlBJUERKbWFnL0gwL2RHazg5V1Q3Tm1aOFFkVkVtT3dRdGxjdjhQR0hwSE9X?=
 =?utf-8?B?anFoUEZ3VUxvNGFTaEtmK3lROFg1dHhEcUFjalRPL1FEN0NIbi85VXlia0xS?=
 =?utf-8?B?WHlvVGxWN3NnaDNacDFBcVpvTkxPamVpbTA0cHFlSEtuMVdTQSs0cHZLRE8w?=
 =?utf-8?B?MlFIMkZqY21QYzBPZHRMRXZjVU01dXVKeHgvU3BCcWhQT0g4MENIMm0xZlgw?=
 =?utf-8?B?djdUV05pTVJ0dFU1TVVYbmp0Tk9wU2JpZHp6NzJWVFdyTTZGN0N3SGZ3YVFm?=
 =?utf-8?B?RnUwRHgrb2E0dE1rZkoxVWpkRWJkaHVrK1FRQXE1a1NPaDZGNXJ4eXVVYmtN?=
 =?utf-8?B?N1VjNXJoV0MwVEdRWmV0V0JibWJNYTBwc3N6a20xQytLcFd6MWw3VWZaUjMw?=
 =?utf-8?B?Q3NtbzI0aVd6WXNuUUhVenhtb3FvbzhyT0ZPb2Jia0UzMUdLMUFiNWZ5Wkdw?=
 =?utf-8?B?NWFQSi9USjF6ZEZxdGNuWEdCMjkzNFJYc1hDNmx1YStLN2xaeWxDa3hMVEhZ?=
 =?utf-8?B?aEdFTmFvbDdwckJwWDR2eTdPT3JkQTJuQm1hakVRNEZ0Zm1lYzkrN251QUlI?=
 =?utf-8?B?Mno3NGp5RklQWEdNZHBVNEY2NW9rbEt0RVFnejJWSkxJNHFHZ25lQmxSeTVv?=
 =?utf-8?B?MXJkRVdXOFZLQWpoZG1BTDVnbWl0SzhOYzhsMC9NalVBMHVwSm52ZkQ5akxG?=
 =?utf-8?B?WExmQUdYenhHUjlYbTJibVlsMXB0YjJjSStMcHRZajNTZy9UQUtlL0JPN05X?=
 =?utf-8?B?S0d0djZDQVZnaytsVGNzaFkrdW1WT2xpZDBwN2lBWFJoeFlHaGRrN2xOcTlN?=
 =?utf-8?B?VkNGMlZaR2haOTZsTTB3a2dBUUNlRGNKN0xBc2hDaEhZNUZENkovUE9HdTh4?=
 =?utf-8?B?OUJScEJkM3ZzSS9YcmVwbkJraEZLem1JeHF3eUhDWVdsUkltRys4bEN0ZG13?=
 =?utf-8?B?S3VyQXdMY0gwekowQ0I4UkZxN3I3SkJVSVlJdjBXajZ3REx6d1oyTndDNWhG?=
 =?utf-8?B?c09mc2dmZjN6VCtFYWxVazVjUWpjM0VDMzV3UlNTckdvQzRrWUh1Z0JERzlj?=
 =?utf-8?B?d3J5ZGlZVE5SYWpBSkMzOG94YW1kM1pvT2xnOUJ3QkYrcE1XK0xsbytKRlFo?=
 =?utf-8?B?UDBzWTF0VkhYSS9rQk5UdVU3amxjSWRWd2dVL3puSUZkVStJSHYvV2wzQmZU?=
 =?utf-8?B?Sm9ZNnp2bDhzMWljU2RhZnZRb0JqcG5kT3JJR3Nzaldzb2REY3RQeFBGbTFt?=
 =?utf-8?B?T3RROVVpNGRLWFRmS2RxTmEzcHVzODZDQTJoWDd3Rm4xUFdVbHlURTRsTko5?=
 =?utf-8?B?aXFDMzEwZU5aQzlsaXFpSzBIWW9SRTRtTlh6VmhWTit5QXA5cnFKUDNmb013?=
 =?utf-8?B?b1ZHbzg4MElOV2QwUVRBM2RUazRYbTdVUUtHaU1SVTRHZ044czBhSEJENTdS?=
 =?utf-8?B?UDZTdWRSN1N4bzhVSVhoYXRIY2hldGJ3M0hBWFRiNHlENkREQ2dUbmE2d0o3?=
 =?utf-8?B?UWVDWVhDd3hUL1BQSWJuUFQ2ZWVIQ01XZklBK2xmejgwZmhNckcyeU5md0o2?=
 =?utf-8?B?VmFDdzNGUHY0VXJnNnQvbEF5bTRYZk9HbytMaEFPMWttTytRVkhsbHpseGdL?=
 =?utf-8?B?bkhCSDFGVFV4bnZZU05rd3V5ZmQvS0dLMVZoNENXU2NhZjZMalcyWHJIVGpX?=
 =?utf-8?B?cE9GamlYUEhMTFpQeTZISmxhUnpMT2s1QTZJUDRiZlIxemtJOFZhUGhNRHZy?=
 =?utf-8?B?cy9TZ2JqSGZTWFNZbHF0K013aDBZWkh1aHJRWUpUZFVGTGJVS2drQ0cybUEv?=
 =?utf-8?B?TVZ2R1Z0cXFIcnRTU09yNjBjSFF2ZnQyNFlpQSt4bG9pcCtKQ2syWnZITnhj?=
 =?utf-8?B?cndObzZhOGxweUFTYjJDY1F6bVhLeWJGWk1aRlpwdTJFNlg4a3Zya0ZNNFpo?=
 =?utf-8?B?YkhjeTVOTHM3eHBwZ2U0WGMwMSt4UGVsMkw5K1NodWhuNEVzQkhBb0JDMkFa?=
 =?utf-8?B?Q0NDQmFWbTRhUUgwNjRiUnpKcWhwL2pBRkhOeHpTREYxNmJTZXd6dThCMFRD?=
 =?utf-8?B?ZnEzRXU4Yk1TeHNuQWx0aDF5azdHYWxLUy91L2V2eVFPc1RLaVh1RWVFeEYw?=
 =?utf-8?Q?T84y6ZD+NJIki+AynNWsZGIipxvK5itzNR3LUAoo15Q/?=
X-OriginatorOrg: oracle.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 6e2ecf44-f1f2-4149-033b-08d9fdee8fe1
X-MS-Exchange-CrossTenant-AuthSource: BYAPR10MB2663.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Mar 2022 14:52:10.9599
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: Yjo8ovXKpxhULeFKJ1pS7M0DcuZaKHt++ZAwNYqgHZjbR1Y63l8uRTwDj5tfmRT4AXTamqoJcufDoebk/LQDIg==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB5672
X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10276 signatures=690470
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 adultscore=0 mlxscore=0
 malwarescore=0 bulkscore=0 suspectscore=0 mlxlogscore=999 spamscore=0
 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000
 definitions=main-2203040080
X-Proofpoint-GUID: OiMWQF-DllDrPBluVetTMJxMRx26wyQz
X-Proofpoint-ORIG-GUID: OiMWQF-DllDrPBluVetTMJxMRx26wyQz
X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,NICE_REPLY_A,RDNS_NONE,SPF_HELO_NONE,
	T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi David,

On 3/4/22 4:25 AM, David Miller wrote:
> From: Dongli Zhang <dongli.zhang@oracle.com>
> Date: Thu,  3 Mar 2022 22:33:03 -0800
> 
>> The commit c504e5c2f964 ("net: skb: introduce kfree_skb_reason()") has
>> introduced the kfree_skb_reason() to help track the reason.
>>
>> The tun and tap are commonly used as virtio-net/vhost-net backend. This is to
>> use kfree_skb_reason() to trace the dropped skb for those two drivers. 
> 
> This patch series does not apply cleanly against net-next, plewase respin.
> 

Sorry for that. I will rebase to the most recent net-next.

Unfortunately, one patch just merged to net-next has already been in my patchset ...

https://lore.kernel.org/netdev/40f63798-2b85-c31c-9722-ee24d55093a8@oracle.com/

...  so that I will need to remove my PATCH 1/4 and rebase.

Thank you very much!

Dongli Zhang