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Tue, 09 Feb 2021 07:58:03 -0500 X-MC-Unique: 5VYmTVcON_WAMHtZiGoxlg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A41BD106BC6D; Tue, 9 Feb 2021 12:58:02 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-90.pek2.redhat.com [10.72.12.90]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 427DC5D6D7; Tue, 9 Feb 2021 12:57:58 +0000 (UTC) Subject: Re: kernel null pointer at nvme_tcp_init_iter+0x7d/0xd0 [nvme_tcp] To: Sagi Grimberg , linux-nvme@lists.infradead.org, linux-block References: <630237787.11660686.1612580898410.JavaMail.zimbra@redhat.com> <5848858e-239d-acb2-fa24-c371a3360557@redhat.com> From: Yi Zhang Message-ID: Date: Tue, 9 Feb 2021 20:57:55 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210209_075811_644677_691EAAF7 X-CRM114-Status: GOOD ( 18.93 ) 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: axboe@kernel.dk, Rachel Sibley , Chaitanya.Kulkarni@wdc.com, CKI Project , Ming Lei 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 CgpPbiAyLzkvMjEgNjoyNSBQTSwgU2FnaSBHcmltYmVyZyB3cm90ZToKPgo+PiBIaSBTYWdpCj4+ Cj4+IE9uIDIvOC8yMSA1OjQ2IFBNLCBTYWdpIEdyaW1iZXJnIHdyb3RlOgo+Pj4KPj4+PiBIZWxs bwo+Pj4+Cj4+Pj4gV2UgZm91bmQgdGhpcyBrZXJuZWwgTlVMTCBwb2ludGVyIGlzc3VlIHdpdGgg bGF0ZXN0IAo+Pj4+IGxpbnV4LWJsb2NrL2Zvci1uZXh0IGFuZCBpdCdzIDEwMCUgcmVwcm9kdWNl ZCwgbGV0IG1lIGtub3cgaWYgeW91IAo+Pj4+IG5lZWQgbW9yZSBpbmZvL3Rlc3RpbmcsIHRoYW5r cwo+Pj4+Cj4+Pj4gS2VybmVsIHJlcG86IAo+Pj4+IGh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcvcHVi L3NjbS9saW51eC9rZXJuZWwvZ2l0L2F4Ym9lL2xpbnV4LWJsb2NrLmdpdAo+Pj4+IENvbW1pdDog MTFmOGI2ZmQwZGI5IC0gTWVyZ2UgYnJhbmNoICdmb3ItNS4xMi9pb191cmluZycgaW50byBmb3It bmV4dAo+Pj4+Cj4+Pj4gUmVwcm9kdWNlcjogYmxrdGVzdHMgbnZtZS10Y3AvMDEyCj4+Pgo+Pj4g VGhhbmtzIGZvciByZXBvcnRpbmcgTWluZywgSSd2ZSB0cmllZCB0byByZXByb2R1Y2UgdGhpcyBv biBteSBWTQo+Pj4gYnV0IGRpZCBub3Qgc3VjY2VlZC4gR2l2ZW4gdGhhdCB5b3UgaGF2ZSBpdCAx MDAlIHJlcHJvZHVjaWJsZSwKPj4+IGNhbiB5b3UgdHJ5IHRvIHJldmVydCBjb21taXQ6Cj4+Pgo+ Pj4gMGRjOWVkYWY4MGVhIG52bWUtdGNwOiBwYXNzIG11bHRpcGFnZSBidmVjIHRvIHJlcXVlc3Qg aW92X2l0ZXIKPj4+Cj4+Cj4+IFJldmVydCB0aGlzIGNvbW1pdCBmaXhlZCB0aGUgaXNzdWUgYW5k IEkndmUgYXR0YWNoZWQgdGhlIGNvbmZpZy4gOikKPgo+IEhleSBNaW5nLAo+Cj4gSW5zdGVhZCBv ZiByZXZlcnQsIGRvZXMgdGhpcyBwYXRjaCBtYWtlcyB0aGUgaXNzdWUgZ28gYXdheT8KSGkgU2Fn aQoKQmVsb3cgcGF0Y2ggZml4ZWQgdGhlIGlzc3VlLCBsZXQgbWUga25vdyBpZiB5b3UgbmVlZCBt b3JlIHRlc3RpbmcuIDopCgpUaGFua3MKWWkKCj4gLS0gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMv bnZtZS9ob3N0L3RjcC5jIGIvZHJpdmVycy9udm1lL2hvc3QvdGNwLmMKPiBpbmRleCA2MTliMGQ4 ZjZlMzguLjY5ZjU5ZDJjNTc5OSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL252bWUvaG9zdC90Y3Au Ywo+ICsrKyBiL2RyaXZlcnMvbnZtZS9ob3N0L3RjcC5jCj4gQEAgLTIyNzEsNyArMjI3MSw3IEBA IHN0YXRpYyBibGtfc3RhdHVzX3QgCj4gbnZtZV90Y3Bfc2V0dXBfY21kX3BkdShzdHJ1Y3QgbnZt ZV9ucyAqbnMsCj4gwqDCoMKgwqDCoMKgwqAgcmVxLT5kYXRhX2xlbiA9IGJsa19ycV9ucl9waHlz X3NlZ21lbnRzKHJxKSA/Cj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgYmxrX3JxX3BheWxvYWRfYnl0ZXMocnEpIDogMDsKPiDC oMKgwqDCoMKgwqDCoCByZXEtPmN1cnJfYmlvID0gcnEtPmJpbzsKPiAtwqDCoMKgwqDCoMKgIGlm IChyZXEtPmN1cnJfYmlvKQo+ICvCoMKgwqDCoMKgwqAgaWYgKHJlcS0+Y3Vycl9iaW8gJiYgcmVx LT5kYXRhX2xlbikKPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgbnZtZV90Y3BfaW5p dF9pdGVyKHJlcSwgcnFfZGF0YV9kaXIocnEpKTsKPgo+IMKgwqDCoMKgwqDCoMKgIGlmIChycV9k YXRhX2RpcihycSkgPT0gV1JJVEUgJiYKPiAtLSAKPgoKCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4LW52bWUgbWFpbGluZyBsaXN0CkxpbnV4LW52 bWVAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2xpbnV4LW52bWUK