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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 599FBC282D1 for ; Thu, 6 Mar 2025 20:54:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:Subject:To:From:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=GzcVtYLuIwXLiUH6fZgTvs8oVMg1+gDbgR6VTBxNxQE=; b=cjO24DCyssDXmIpEcNH2P2HL8+ dzDY9qARCYHskXHcuB/FvWUTk+/10QH/PIID/DQGua412n/fZ6n7glVDxSfloTXgkAnVciCeyERAl b0iia7aok5wXeR+VCNHVUQZ/xZXK7TEpyUqUq3IAiJCvqFq8Kezma8CTboEc6U4YsDXT3DPT6yy5r dtzpQkt9gxEo/Cdn7TMk6tuT1DcaPo0DgHsPoTExDPyvyThKOBqJKVSUCv074R2Alaef6WtKnlzab 9qUCUahhvLfH7/gcdKCC4ASMrSfl3PKljFC0KeWfIo5TCcvDad1AQFv+P1XgentKxHZIL2iuiPQEH ehLqFy6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqIEB-0000000CAua-0FIG; Thu, 06 Mar 2025 20:53:59 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqI7V-0000000C9lN-2lxu for linux-nvme@lists.infradead.org; Thu, 06 Mar 2025 20:47:06 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id A1A7F5C5714; Thu, 6 Mar 2025 20:44:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A85BC4CEE0; Thu, 6 Mar 2025 20:47:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741294024; bh=GzcVtYLuIwXLiUH6fZgTvs8oVMg1+gDbgR6VTBxNxQE=; h=From:To:Subject:Date:From; b=HzJssaA4Nzx3z2R/4738UEe1wTJb+w0CxYL6RJQze8NYIc4rMfz9dmIuwzR+Y4xUc aRPkiNZILcVGc7c+FPUmyGoDEcl51dSuWhqCrfT07WuNOKA7AQZEgVQiR1u5xY3fGM 36euFrnzEhVAqDKRuX0aTdOp6AQzXt2Y2OxPDsfuht+3hJDCe5raWfbRysaeE9GMcs J2UbYteLshONIHUjVhU/jRR+NmJU3kkIV9WNfECdHkceNjWOxUts/c3hlGEgwT0Vqd cNN+xZJZzLNVmxPJcHNYUs3Smqz+o0XoyTEmnP8ZUvITxL+L9CVl3xR45TEdAPujzU JJY/GYgyQxLKQ== From: Andreas Hindborg To: Keith Busch ,Jens Axboe , Christoph Hellwig ,Sagi Grimberg , linux-nvme@lists.infradead.org,linux-kernel@vger.kernel.org Subject: [bug report] nvme: fio workload hangs on 16m random read User-Agent: mu4e 1.12.7; emacs 29.4 Date: Thu, 06 Mar 2025 21:46:37 +0100 Message-ID: <87a59x6g5u.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_124705_755200_1D1A5732 X-CRM114-Status: UNSURE ( 5.51 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hi All, My CI system has found an issue for the following fio workload: root@debian:~# insmod /mnt/v6.14-rc5-build/drivers/nvme/host/nvme-core.ko root@debian:~# insmod /mnt/v6.14-rc5-build/drivers/nvme/host/nvme.ko poll_queues=1 "fio" "--group_reporting" "--name=default" "--filename=/dev/nvme0n1" "--readwrite=randread" "--blocksize=16777216" "--direct=1" "--numjobs=1" "--ioengine=io_uring" "--iodepth=1" "--hipri=1" "--time_based=1" "--runtime=3000" fio will hang, some times immediately, some times after a few minutes. I observed this on v6.14-rc1 and v6.14-rc5. It is not present in v6.13. Can any of you reproduce this? I was able to reproduce this on real hardware and in qemu. Best regards, Andreas Hindborg