From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89BB3C433DB for ; Tue, 2 Mar 2021 09:49:29 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A975364EFC for ; Tue, 2 Mar 2021 09:49:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A975364EFC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=u5GKHCCGJdLoGILNM6kLaYT+FuyokZLYUuawBBtbbZ8=; b=gXw9sC3PE8/xiMDGcIni8rAPY XcmP+N6LqBPhwlQXfT+e9YeTd9W72sBdu+xp9ZDBoY0NcjH7tGo4DdCv6RcEaaDE/WiFlysFiRMKz Z7w9OZPO3xw9kwmVdXsehxxxHKxFpNV++N7dDAmDmAvQHjYlhHew43QNfG2y7rHW30DDzroJOVj3d tSqvRcYJj8CyzLcB0XOlDw/rxlCrT2Cd7e2/lc74v2EVtoD8KRuQgQyAAYupddRjSHxd33x7DWBVZ iUfdknGm6Mo2vHeUAeCANV9TbgDC0axuWcDh/KAmT/jPHcYTAX/cUGzerxl8msgcPSwKpQgn2H1Ut 16j0375Yw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lH1ed-0006Mu-66; Tue, 02 Mar 2021 09:49:23 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lH1eZ-0006MA-Ep for linux-nvme@lists.infradead.org; Tue, 02 Mar 2021 09:49:20 +0000 Received: from DGGEMM403-HUB.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4DqXMM6X1bzWGZf for ; Tue, 2 Mar 2021 17:46:23 +0800 (CST) Received: from dggema772-chm.china.huawei.com (10.1.198.214) by DGGEMM403-HUB.china.huawei.com (10.3.20.211) with Microsoft SMTP Server (TLS) id 14.3.498.0; Tue, 2 Mar 2021 17:49:06 +0800 Received: from [10.169.42.93] (10.169.42.93) by dggema772-chm.china.huawei.com (10.1.198.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2106.2; Tue, 2 Mar 2021 17:49:05 +0800 Subject: Re: [PATCH] nvme-rdma: fix crash for no IO queues To: Hannes Reinecke , References: <20210223072602.3196-1-lengchao@huawei.com> <20210223232137.GA23682@redsun51.ssa.fujisawa.hgst.com> <7c30ddb7-ee41-9972-4cb6-0a5c089f687c@huawei.com> <2a9bb7c3-eb4e-2341-dcfa-583d41912977@suse.de> <0a8fbff4-3759-f300-1fa8-601df1eab683@huawei.com> From: Chao Leng Message-ID: <8ceff1a9-8015-feab-6c02-fd22ec3346de@huawei.com> Date: Tue, 2 Mar 2021 17:49:05 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.169.42.93] X-ClientProxiedBy: dggeme709-chm.china.huawei.com (10.1.199.105) To dggema772-chm.china.huawei.com (10.1.198.214) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210302_044919_767918_D747A06D X-CRM114-Status: GOOD ( 18.47 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org CgpPbiAyMDIxLzMvMiAxNTo0OCwgSGFubmVzIFJlaW5lY2tlIHdyb3RlOgo+IE9uIDIvMjcvMjEg MTA6MzAgQU0sIENoYW8gTGVuZyB3cm90ZToKPj4KPj4KPj4gT24gMjAyMS8yLzI3IDE3OjEyLCBI YW5uZXMgUmVpbmVja2Ugd3JvdGU6Cj4+PiBPbiAyLzI0LzIxIDY6NTkgQU0sIENoYW8gTGVuZyB3 cm90ZToKPj4+Pgo+Pj4+Cj4+Pj4gT24gMjAyMS8yLzI0IDc6MjEsIEtlaXRoIEJ1c2NoIHdyb3Rl Ogo+Pj4+PiBPbiBUdWUsIEZlYiAyMywgMjAyMSBhdCAwMzoyNjowMlBNICswODAwLCBDaGFvIExl bmcgd3JvdGU6Cj4+Pj4+PiBBIGNyYXNoIGhhcHBlbnMgd2hlbiBzZXQgZmVhdHVyZShOVk1FX0ZF QVRfTlVNX1FVRVVFUykgdGltZW91dCBpbiBudm1lCj4+Pj4+PiBvdmVyIHJkbWEocm9jZSkgcmVj b25uZWN0aW9uLCB0aGUgcmVhc29uIGlzIHVzZSB0aGUgcXVldWUgd2hpY2ggaXMgbm90Cj4+Pj4+ PiBhbGxvY2VkLgo+Pj4+Pj4KPj4+Pj4+IElmIGl0IGlzIG5vdCBkaXNjb3ZlcnkgYW5kIG5vIGlv IHF1ZXVlcywgdGhlIGNvbm5lY3Rpb24gc2hvdWxkIGZhaWwuCj4+Pj4+Cj4+Pj4+IElmIHlvdSdy ZSBnZXR0aW5nIGEgdGltZW91dCwgd2UgbmVlZCB0byBxdWl0IGluaXRpYWxpemF0aW9uLiBIYW5u ZXMKPj4+Pj4gYXR0ZW1wdGVkIG1ha2luZyB0aGF0IHN0YXR1cyB2aXNpYmxlIGZvciBmYWJyaWNz IGhlcmU6Cj4+Pj4+Cj4+Pj4+IGh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL3BpcGVybWFpbC9s aW51eC1udm1lLzIwMjEtSmFudWFyeS8wMjIzNTMuaHRtbAo+Pj4+Pgo+Pj4+IEkga25vdyB0aGUg cGF0Y2guIEl0IGNhbiBub3Qgc29sdmUgdGhlIHNjZW5hcmlvOiB0YXJnZXQgbWF5IGJlIGFuCj4+ Pj4gYXR0YWNrZXIgb3IgdGhlIHRhcmdldCBiZWhhdmlvciBpcyBpbmNvcnJlY3QuCj4+Pj4gSWYg dGFyZ2V0IHJldHVybiAwIGlvIHF1ZXVlcyBvciByZXR1cm4gb3RoZXIgZXJyb3IgY29kZSwgdGhl IGNyYXNoIHdpbGwKPj4+PiBzdGlsbCBoYXBwZW4uIFdlIHNob3VsZCBub3QgYWxsb3cgdGhpcyB0 byBoYXBwZW4uCj4+PiBJJ20gZnVsbHkgd2l0aCB5b3UgdGhhdCB3ZSBzaG91bGRuJ3QgY3Jhc2gs IGJ1dCBhdCB0aGUgc2FtZSB0aW1lIGEKPj4+IHZhbHVlIG9mICcwJyBmb3IgdGhlIG51bWJlciBv ZiBJL08gcXVldWVzIGlzIGNvbnNpZGVyZWQgdmFsaWQuCj4+PiBTbyB3ZSBzaG91bGQgZml4IHRo ZSBjb2RlIHRvIGhhbmRsZSB0aGlzIHNjZW5hcmlvLCBhbmQgbm90IGRpc2FsbG93aW5nCj4+PiB6 ZXJvIEkvTyBxdWV1ZXMuCj4+ICcwJyBJL08gcXVldWVzIGRvZXNuJ3QgbWFrZSBhbnkgc2Vuc2Ug dG8gbnZtZSBvdmVyIGZhYnJpY3MsIGl0IGlzCj4+IGRpZmZlcmVudCB3aXRoIG52bWUgb3ZlciBw Y2kuIElmIHRoZXJlIGlzIHNvbWUgYnVnIHdpdGggdGFyZ2V0LCB3ZSBjYW4KPj4gZGVidWcgaXQg aW4gdGFyZ2V0IGluc3RlYWQgb2YgdXNlIGFkbWluIHF1ZXVlIGluIGhvc3QuCj4+IHRhcmdldCBt YXkgYmUgYW4gYXR0YWNrZXIgb3IgdGhlIHRhcmdldCBiZWhhdmlvciBpcyBpbmNvcnJlY3QuIFNv IHdlCj4+IHNob3VsZCBhdm9pZCBjcmFzaC4gQW5vdGhlciBvcHRpb246IHByb2hpYml0wqAgcmVx dWVzdCBkZWxpdmVyeSBpZgo+PiBpbyBxdWV1ZSBkbyBub3QgY3JlYXRlZC4KPj4gSSB0aGluayBm YWlsZWQgY29ubmVjdGlvbiB3aXRoICcwJyBJL08gcXVldWVzIGlzIGEgYmV0dGVyIGNob2ljZS4K PiAKPiBNaWdodCBiZSwgYnV0IHRoYXQncyBub3QgZm9yIG1lIHRvIGRlY2lkZS4KPiBJIHRyaWVk IHRoYXQgaW5pdGlhbGx5LCBidXQgdGhhdCBwYXRjaCBnb3QgcmVqZWN0ZWQgYXMgX3RlY2huaWNh bGx5XyB0aGUKPiBjb250cm9sbGVyIGlzIHJlYWNoYWJsZSB2aWEgaXRzIGFkbWluIHF1ZXVlLgpJ IGtub3cgYWJvdXQgeW91ciBwYXRjaC4gVGhhdCBwYXRjaCBmYWlsZWQgY29ubmVjdGlvbiBmb3Ig YWxsIHRyYW5zcG9ydHMuCkl0IGlzIG5vdCBnb29kIGZvciBwY2llIHRyYW5zcG9ydCwgdGhlIGNv bnRyb2xsZXIgY2FuIGFjY2VwdCBhZG1pbgpjb21tYW5kcyB0byBnZXQgc29tZSBkaWFnbm9zdGlj cyAocGVyaGFwcyBhbiBlcnJvciBsb2cgcGFnZSksIHRoaXMgaXMKa2VpdGgncyB0aG91Z2h0cy4K PiBTYWdpPyBDaHJpc3RvcGg/Cj4gQXJlIGNvbnRyb2xsZXJzIHdpdGggMCBJL08gcXVldWVzIHZh bGlkIG9yIGlzIHRoaXMgYW4gZXJyb3IgY29uZGl0aW9uPwo+IAo+IENoZWVycywKPiAKPiBIYW5u ZXMKPiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxp bnV4LW52bWUgbWFpbGluZyBsaXN0CkxpbnV4LW52bWVAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRw Oi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW52bWUK