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Tue, 24 Sep 2019 04:52:53 +0000 (UTC) Date: Tue, 24 Sep 2019 00:52:52 -0400 (EDT) From: Yi Zhang To: Max Gurtovoy Message-ID: <116222781.3022437.1569300772965.JavaMail.zimbra@redhat.com> In-Reply-To: <0a8fffe2-f607-26ac-43f5-86182b1c782e@mellanox.com> References: <1437535598.446597.1568798016422.JavaMail.zimbra@redhat.com> <2ea07772-3905-fb82-4d73-7458a963677c@mellanox.com> <1a2ef415-72fd-7a78-33b3-5a2656246f77@redhat.com> <0a8fffe2-f607-26ac-43f5-86182b1c782e@mellanox.com> Subject: Re: NVMeoF RDMA IB: I/O timeout and NULL pointer observed during rescan_controller/reset_controller with fio background MIME-Version: 1.0 X-Originating-IP: [10.68.5.41, 10.4.195.6] Thread-Topic: NVMeoF RDMA IB: I/O timeout and NULL pointer observed during rescan_controller/reset_controller with fio background Thread-Index: vbgc8fEBbemmlYnIMe+4WqbE73k8hw== X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Tue, 24 Sep 2019 04:52:54 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190923_215255_117724_48561EAE X-CRM114-Status: GOOD ( 12.32 ) 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: , Cc: Sagi Grimberg , linux-nvme@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org SGkgTWF4L1NhZ2kKU29ycnkgZm9yIHRoZSBsYXRlIHJlc3BvbnNlLCB3aWxsIHVwZGF0ZSBpdCB0 b2RheS4KCkJlc3QgUmVnYXJkcywKICBZaSBaaGFuZwoKCi0tLS0tIE9yaWdpbmFsIE1lc3NhZ2Ug LS0tLS0KRnJvbTogIk1heCBHdXJ0b3ZveSIgPG1heGdAbWVsbGFub3guY29tPgpUbzogIlNhZ2kg R3JpbWJlcmciIDxzYWdpQGdyaW1iZXJnLm1lPiwgIllpIFpoYW5nIiA8eWkuemhhbmdAcmVkaGF0 LmNvbT4sIGxpbnV4LW52bWVAbGlzdHMuaW5mcmFkZWFkLm9yZwpTZW50OiBNb25kYXksIFNlcHRl bWJlciAyMywgMjAxOSAxMToyNTozMSBQTQpTdWJqZWN0OiBSZTogTlZNZW9GIFJETUEgSUI6IEkv TyB0aW1lb3V0IGFuZCBOVUxMIHBvaW50ZXIgb2JzZXJ2ZWQgZHVyaW5nIHJlc2Nhbl9jb250cm9s bGVyL3Jlc2V0X2NvbnRyb2xsZXIgd2l0aCBmaW8gYmFja2dyb3VuZAoKQW55IHVwZGF0ZSBZaSA/ Cgp3ZSBtdXN0IGZpeCB0aGlzIGlzc3VlLi4KCk9uIDkvMjAvMjAxOSA3OjU4IFBNLCBTYWdpIEdy aW1iZXJnIHdyb3RlOgo+IFRoYW5rcyBmb3IgcmVwb3J0aW5nIFlpLAo+Cj4gRG9lcyB0aGlzIGZp eCB5b3VyIGlzc3VlPwo+Cj4gLS0gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbnZtZS9ob3N0L3Jk bWEuYyBiL2RyaXZlcnMvbnZtZS9ob3N0L3JkbWEuYwo+IGluZGV4IGRmYTA3YmI5ZGZlYi4uOTgx ZGE5Y2UzY2ZjIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvbnZtZS9ob3N0L3JkbWEuYwo+ICsrKyBi L2RyaXZlcnMvbnZtZS9ob3N0L3JkbWEuYwo+IEBAIC02MTQsNyArNjE0LDggQEAgc3RhdGljIGlu dCBudm1lX3JkbWFfc3RhcnRfcXVldWUoc3RydWN0IAo+IG52bWVfcmRtYV9jdHJsICpjdHJsLCBp bnQgaWR4KQo+IMKgwqDCoMKgwqDCoMKgIGlmICghcmV0KSB7Cj4gwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgIHNldF9iaXQoTlZNRV9SRE1BX1FfTElWRSwgJnF1ZXVlLT5mbGFncyk7Cj4g wqDCoMKgwqDCoMKgwqAgfSBlbHNlIHsKPiAtwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBf X252bWVfcmRtYV9zdG9wX3F1ZXVlKHF1ZXVlKTsKPiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoCBpZiAodGVzdF9iaXQoTlZNRV9SRE1BX1FfQUxMT0NBVEVELCAmcXVldWUtPmZsYWdzKSkK PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgX19udm1lX3Jk bWFfc3RvcF9xdWV1ZShxdWV1ZSk7Cj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGRl dl9pbmZvKGN0cmwtPmN0cmwuZGV2aWNlLAo+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqAgImZhaWxlZCB0byBjb25uZWN0IHF1ZXVlOiAlZCByZXQ9JWRcbiIs IGlkeCwgCj4gcmV0KTsKPiDCoMKgwqDCoMKgwqDCoCB9Cj4gLS0gCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1udm1lIG1haWxpbmcgbGlzdApM aW51eC1udm1lQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcv bWFpbG1hbi9saXN0aW5mby9saW51eC1udm1lCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fXwpMaW51eC1udm1lIG1haWxpbmcgbGlzdApMaW51eC1udm1lQGxp c3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0 aW5mby9saW51eC1udm1lCg==