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=-5.4 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 A9D69C433E0 for ; Thu, 21 Jan 2021 09:06:51 +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 45D7C22B51 for ; Thu, 21 Jan 2021 09:06:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 45D7C22B51 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=grimberg.me 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=HBuha7LAfXuYy52pcHLhwiyLU4/Eg2m6apXdG2fIQ8o=; b=3cNRUWQJh0EbL02KL2mn6nRM0 2KE796cAwBFzn4DZFOO5wOEQXlhL4MZm/pxk6jKa0h63JIswLoU0eKHQwlmEIl4WfsbBTK81pHH9e cCTxx3sH/a6AjonDJd3o5vD+/am4h2UfbZjMw3s+N9zXsHvJoKuCceUr8X/R0vnfMHNkLI0SzIalm 0DKAI/+KkTHPxwk26fNfeMMsqSI/DhX7g42EYb9gKbKCzDOD2szu1ugTnt6dNgeVt1PsPuxANw4e4 8a94Ojp4plVfROxg9ntPLxqzRlJKDxg21Z9PGo/2vkGK+jJiZ1W/rCiOlaCQ00VwUFnzptNQ75yGj zmYmtNpuQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2VvC-0002bg-Db; Thu, 21 Jan 2021 09:06:30 +0000 Received: from mail-wm1-f48.google.com ([209.85.128.48]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2VvA-0002aG-4g for linux-nvme@lists.infradead.org; Thu, 21 Jan 2021 09:06:28 +0000 Received: by mail-wm1-f48.google.com with SMTP id 190so775899wmz.0 for ; Thu, 21 Jan 2021 01:06:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=5HmyGtKqj+8I9c2l4T8oRXQ+RIfM350busV8nW/+tzo=; b=BB3XyB01j4YM1nWq/YR/wP/gPWwDRM5h1VBZPP3Jq0C0hop7gDEgycYq32A4b1D7Qn uiv4amOLGxqqRYNJKfG9To0CI2mvA8lEP/YfhC1F8Ze0P7ejS8l7yIibRtInZcshNDOd +Ublhz/qgv/L0oZQPAySNM3t9F8MH79AoLSb910WAZMd/F8OalYW5RmIqEQSLn+KM0gd 8eWe29Nr3G2HwhDk+csaploYKf/AbjvhvwImUGkDokq7bpiumlKcp2feU6FbB5CoTL8F w8yucZ0R8+bz7RW052j5UJwO3AfvlH7o072wTE6aHKGXdDeQCAawnGZgD3cv7CiAF1/d V4+g== X-Gm-Message-State: AOAM531ubSnznU3gEZzBTSY/EwvsH9o4idY5hq28EYfHFKkejub0b5t9 vwalZ1s0pv9t58nwHeGF5CZ80vZ7fZo= X-Google-Smtp-Source: ABdhPJw9heKUjEIa/CCuvLoU6GFc/LwFPnmT9pbkklrEx/2Xnr6IBm7lL0i3M5PBJ1CC+j4fah9mPQ== X-Received: by 2002:a1c:4907:: with SMTP id w7mr7997521wma.118.1611219986440; Thu, 21 Jan 2021 01:06:26 -0800 (PST) Received: from ?IPv6:2601:647:4802:9070:fd72:cb73:9874:5790? ([2601:647:4802:9070:fd72:cb73:9874:5790]) by smtp.gmail.com with ESMTPSA id r25sm6529123wrr.64.2021.01.21.01.06.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Jan 2021 01:06:25 -0800 (PST) Subject: Re: kernel oops after nvme_set_queue_count() To: Hannes Reinecke , Christoph Hellwig , "linux-nvme@lists.infradead.org" References: From: Sagi Grimberg Message-ID: <7b532e99-8d94-28c1-6e82-bb1d9eb4b439@grimberg.me> Date: Thu, 21 Jan 2021 01:06:22 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210121_040628_194857_94321646 X-CRM114-Status: GOOD ( 25.19 ) 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 Cj4gSGkgYWxsLAo+IAo+IGEgY3VzdG9tZXIgb2Ygb3VycyByYW4gaW50byB0aGlzIG9vcHM6Cj4g Cj4gWzQ0MTU3LjkxODk2Ml0gbnZtZSBudm1lNTogSS9PIDIyIFFJRCAwIHRpbWVvdXQKPiBbNDQx NjMuMzQ3NDY3XSBudm1lIG52bWU1OiBDb3VsZCBub3Qgc2V0IHF1ZXVlIGNvdW50ICg4ODApCj4g WzQ0MTYzLjM0NzU1MV0gbnZtZSBudm1lNTogU3VjY2Vzc2Z1bGx5IHJlY29ubmVjdGVkICg2IGF0 dGVtcHRzKQo+IFs0NDE2OC40MTQ5NzddIEJVRzogdW5hYmxlIHRvIGhhbmRsZSBrZXJuZWwgcGFn aW5nIHJlcXVlc3QgYXQgCj4gZmZmZjg4OGUyNjFlNzgwOAo+IFs0NDE2OC40MTQ5ODhdIElQOiAw eGZmZmY4ODhlMjYxZTc4MDgKPiBbNDQxNjguNDE0OTk0XSBQR0QgOThjMmFlMDY3IFA0RCA5OGMy YWUwNjcgUFVEIGY1NzkzNzA2MyBQTUQgCj4gODAwMDAwMGY2NjAwMDFlMwo+IAo+IEl0J3MgcmVs YXRlZCB0byB0aGlzIGNvZGUgc25pcHBldCBpbiBkcml2ZXJzL252bWUvaG9zdC9jb3JlLmMKPiAK PiAgwqDCoMKgwqAvKgo+ICDCoMKgwqDCoCAqIERlZ3JhZGVkIGNvbnRyb2xsZXJzIG1pZ2h0IHJl dHVybiBhbiBlcnJvciB3aGVuIHNldHRpbmcgdGhlIHF1ZXVlCj4gIMKgwqDCoMKgICogY291bnQu wqAgV2Ugc3RpbGwgd2FudCB0byBiZSBhYmxlIHRvIGJyaW5nIHRoZW0gb25saW5lIGFuZCBvZmZl cgo+ICDCoMKgwqDCoCAqIGFjY2VzcyB0byB0aGUgYWRtaW4gcXVldWUsIGFzIHRoYXQgbWlnaHQg YmUgb25seSB3YXkgdG8gZml4IHRoZW0gCj4gdXAuCj4gIMKgwqDCoMKgICovCj4gIMKgwqDCoMKg aWYgKHN0YXR1cyA+IDApIHsKPiAgwqDCoMKgwqDCoMKgwqAgZGV2X2VycihjdHJsLT5kZXZpY2Us ICJDb3VsZCBub3Qgc2V0IHF1ZXVlIGNvdW50ICglZClcbiIsIHN0YXR1cyk7Cj4gIMKgwqDCoMKg wqDCoMKgICpjb3VudCA9IDA7Cj4gCj4gCj4gY2F1c2luZyBudm1lX3NldF9xdWV1ZV9jb3VudCgp IF9ub3RfIHRvIHJldHVybiBhbiBlcnJvciwgYnV0IHJhdGhlciBsZXQgCj4gdGhlIHJlY29ubmVj dCBjb21wbGV0ZS4KPiBPZiBjb3Vyc2UsIGFzIHRoaXMgZmFpbHVyZSBpcyBkdWUgdG8gYSB0aW1l b3V0IChjZiB0aGUgc3RhdHVzIGNvZGU7IDg4MAo+IGlzIE5WTUVfU0NfSE9TVF9QQVRIX0VSUk9S KSwgdGhlIGFkbWluIHF1ZXVlIGhhcyBiZWVuIHRvcm4gZG93biBieSB0aGUgCj4gdHJhbnNwb3J0 LCBjYXVzaW5nIHRoaXMgY3Jhc2guCj4gCj4gU28sIHF1ZXN0aW9uOiBfd2h5XyBkbyB3ZSBpZ25v cmUgdGhlIHN0YXR1cz8KClRoaXMgdXNlZCB0byBleGlzdCBpbiBwY2kgd2hlcmUgYSBjb250cm9s bGVyIHJlc2V0IHdpbGwgZmFpbCB0byBzZXQgdXAKSS9PIHF1ZXVlcywgYXQgbGVhc3QgdGhlIGNv bnRyb2xsZXIgY2FuIGFjY2VwdCBhZG1pbiBjb21tYW5kcyB0byBnZXQKc29tZSBkaWFnbm9zdGlj cyAocGVyaGFwcyBhbiBlcnJvciBsb2cgcGFnZSkuCgo+IEZvciBmYWJyaWNzIEkgY29tcGxldGVs eSBmYWlsIHRvIHNlZSB0aGUgcmVhc29uIGhlcmU7IGV2ZW4gX2lmXyBpdCAKPiB3b3JrZWQgd2Ug d291bGQgZW5kIHVwIHdpdGggYSBjb25uZWN0aW9uIGZvciB3aGljaCBqdXN0IHRoZSBhZG1pbiBx dWV1ZSAKPiBpcyBvcGVyYWJsZSwgdGhlIHN0YXRlIGlzIExJVkUsIGFuZCBhbGwgaW5mb3JtYXRp b24gd2UgY291bGQgZ2xhbmNlIAo+IHdvdWxkIGluZGljYXRlIHRoYXQgdGhlIGNvbm5lY3Rpb24g aXMgcGVyZmVjdGx5IGhlYWx0aHkuCgpXZSBhbHNvIGhhZCBhIEFETUlOX09OTFkgc3RhdGUgYXQg c29tZSBwb2ludCwgYnV0IHRoYXQgd2FzIGRyb3BwZWQgYXMKd2VsbCBmb3IgcmVhc29ucyBJIGRv bid0IHJlbWVtYmVyIGF0IHRoZSBtb21lbnQuCgo+IEl0IGp1c3QgZG9lc24ndCBoYXZlIGFueSBJ L08gcXVldWVzLgo+IFdoaWNoIHdpbGwgbGVhZCB0byBzb21lIHZlcnkgY29uZnVzZWQgY3VzdG9t ZXJzIGFuZCBzb21lIHZlcnkgdW5oYXBweSAKPiBzdXBwb3J0IGZvbGtzIHRyeWluZyB0byBmaWd1 cmUgb3V0IHdoYXQgaGFzIGhhcHBlbmVkLgo+IAo+IENhbiB3ZSBqdXN0IGtpbGwgdGhpcyBzdGF0 ZW1lbnQgYW5kIGFsd2F5cyByZXR1cm4gYW4gZXJyb3I/Cj4gSW4gYWxsIG90aGVyIGNhc2VzIHdl IGFyZSBxdWl0ZSB0cmlnZ2VyLWhhcHB5IHdpdGggY29udHJvbGxlciByZXNldDsgd2h5IAo+IG5v dCBoZXJlPwoKSSB0aGluayB3ZSB3aWxsIHdhbnQgdG8ga2VlcCB0aGUgZXhpc3RpbmcgYmVoYXZp b3IgZm9yIHBjaSwgYnV0IGFncmVlIHdlCnByb2JhYmx5IHdhbnQgdG8gY2hhbmdlIGl0IGZvciBm YWJyaWNzLi4uCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpMaW51eC1udm1lIG1haWxpbmcgbGlzdApMaW51eC1udm1lQGxpc3RzLmluZnJhZGVhZC5vcmcK aHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1udm1lCg==