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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 2D514C433F5 for ; Thu, 9 Sep 2021 10:07:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06B3C611B0 for ; Thu, 9 Sep 2021 10:07:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230404AbhIIKIz (ORCPT ); Thu, 9 Sep 2021 06:08:55 -0400 Received: from wout5-smtp.messagingengine.com ([64.147.123.21]:55757 "EHLO wout5-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229980AbhIIKIy (ORCPT ); Thu, 9 Sep 2021 06:08:54 -0400 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 1D5023200922; Thu, 9 Sep 2021 06:07:45 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Thu, 09 Sep 2021 06:07:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm1; bh=1K0/ZBiegBz77RDKugnz5oOr1bJ GQ2coLljxrhEuL/w=; b=xqsSUI87cW3U5oPZeCHQc90SI3l07gfGR/XF64WAiZV oV13IC/rmAGNP+OOGe1Vp0vosCJW9YPuG9L3SnjYXYUKGklzgr7KatWplSKtEWYT BPluid8QRjfboTRnetKpLl3ui966q4U02o3EvBWNUtgpYcdqqVQL/AmD8AVIgUnU S9u9+T+UTbXgJF+SOmyH8Qr1fx6tgUq1F9/m5a4+9BrvzhfbWltVWx8EVRolNwWq r5TaUHitsUN4cWuKrBEQYUFQR7pEuzMffOq5VJzTkr6cUjJe1O3Z0lXEZFtiQkIs Q/eDJQCSP/DsTcoQVoINQsHCJ36CdEOY+flZbmpeHLg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=1K0/ZB iegBz77RDKugnz5oOr1bJGQ2coLljxrhEuL/w=; b=uCGD0nQAUoVY8GtWlrAMdv tG0IR3A4/26sVNPQUsK5AQ7kbzvke+KURQVZ0Rlz2yaRdhD3Rwwv1xQYFbGKB9bi 5cNYTzVZtQygQd2BhPzussuW6SloW6LF1919AaECkE84oa3ALnAaViRsOyB7XENm dnOVBE+8U3kwHUwmLeL8l5Vv05sVXtOOmsPXGhslU/yLemRozU1Q8XDx7wUDRsLH fkLJS/Z4pLsgXIbp6VJQYEEP5b8M3jqW9uoQUmfhEU4QuJLSy4VZcZAsz4E6uNKJ mjI+z3KqOXR6fOdpGaw6o0EfzwMGJXdajFcx5rGSkDoktX9n36USn20XH2NU+lbA == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrudefledgvdegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfhfgggtuggjsehttdertddttddvnecuhfhrohhmpefirhgvghcu mffjuceoghhrvghgsehkrhhorghhrdgtohhmqeenucggtffrrghtthgvrhhnpeeuleeltd ehkeeltefhleduuddvhfffuedvffduveegheekgeeiffevheegfeetgfenucffohhmrghi nhepkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpe hmrghilhhfrhhomhepghhrvghgsehkrhhorghhrdgtohhm X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 9 Sep 2021 06:07:43 -0400 (EDT) Date: Thu, 9 Sep 2021 12:07:32 +0200 From: Greg KH To: Ming Lei Cc: Yi Zhang , linux-block , stable@vger.kernel.org Subject: Re: [bug report] NULL pointer at blk_mq_put_rq_ref+0x20/0xb4 observed with blktests on 5.13.15 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Thu, Sep 09, 2021 at 05:14:18PM +0800, Ming Lei wrote: > On Thu, Sep 9, 2021 at 4:47 PM Yi Zhang wrote: > > > > Hello > > > > I found this issue with blktests on[1], did we miss some patch on stable? > > [1] > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > > queue/5.13 > > > > [ 68.989907] run blktests block/006 at 2021-09-09 04:34:35 > > [ 69.085724] null_blk: module loaded > > [ 74.271624] Unable to handle kernel NULL pointer dereference at > > virtual address 00000000000002b8 > > [ 74.280414] Mem abort info: > > [ 74.283195] ESR = 0x96000004 > > [ 74.286245] EC = 0x25: DABT (current EL), IL = 32 bits > > [ 74.291545] SET = 0, FnV = 0 > > [ 74.294587] EA = 0, S1PTW = 0 > > [ 74.297720] Data abort info: > > [ 74.300588] ISV = 0, ISS = 0x00000004 > > [ 74.304411] CM = 0, WnR = 0 > > [ 74.307368] user pgtable: 4k pages, 48-bit VAs, pgdp=000008004366e000 > > [ 74.313796] [00000000000002b8] pgd=0000000000000000, p4d=0000000000000000 > > [ 74.320577] Internal error: Oops: 96000004 [#1] SMP > > [ 74.325443] Modules linked in: null_blk mlx5_ib ib_uverbs ib_core > > rfkill sunrpc vfat fat joydev acpi_ipmi ipmi_ssif cdc_ether usbnet mii > > mlx5_core psample ipmi_devintf mlxfw tls ipmi_msghandler arm_cmn > > cppc_cpufreq arm_dsu_pmu acpi_tad fuse zram ip_tables xfs ast > > i2c_algo_bit drm_vram_helper drm_kms_helper crct10dif_ce syscopyarea > > ghash_ce sysfillrect uas sysimgblt sbsa_gwdt fb_sys_fops cec > > drm_ttm_helper ttm nvme usb_storage nvme_core drm xgene_hwmon > > aes_neon_bs > > [ 74.366458] CPU: 31 PID: 2511 Comm: fio Not tainted 5.13.15+ #1 > > Looks the fixes haven't land on linux-5.13.y: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a9ed27a764156929efe714033edb3e9023c5f321 > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c2da19ed50554ce52ecbad3655c98371fe58599f Now queued up. Someone could have told us they were needed :) thanks, greg k-h