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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9C52C8300C for ; Wed, 7 Jun 2023 21:04:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236240AbjFGVEe (ORCPT ); Wed, 7 Jun 2023 17:04:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235812AbjFGVET (ORCPT ); Wed, 7 Jun 2023 17:04:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96CE126B1; Wed, 7 Jun 2023 14:03:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2279A649C2; Wed, 7 Jun 2023 21:03:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 337F0C433D2; Wed, 7 Jun 2023 21:03:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1686171838; bh=CXoOYQWfn/gfiuJeYsYil+eQ9GHgcNCLyTFZQPddJaU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rfzI45WHZru78wT2DapCBLR+jIFBLrX2COw7daYW5FkDpg09mKO4cM5n0YH3F7eJu 5Cn7AnkMUT2qdTzUu10mxbIoAM8BD/SGIXQuEuIookOtlCC5lAhaW/2aOrRIYu7H8f sxotfEvjqHeQ1Ip9Ig0ZCJyta1D1l6Gbe8RgqdBg= Date: Wed, 7 Jun 2023 22:36:09 +0200 From: Greg KH To: "Bhatnagar, Rishabh" Cc: sfrench@samba.org, stable@vger.kernel.org, linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5.4 0/2] Backport few dfs related fixes to cifs Message-ID: <2023060752-trespass-hertz-32a4@gregkh> References: <20230607185313.11363-1-risbhat@amazon.com> <2023060750-unpledged-effective-bd95@gregkh> 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 Wed, Jun 07, 2023 at 01:20:23PM -0700, Bhatnagar, Rishabh wrote: > > On 6/7/23 12:07 PM, Greg KH wrote: > > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe. > > > > > > > > On Wed, Jun 07, 2023 at 06:53:11PM +0000, Rishabh Bhatnagar wrote: > > > Recently we have been seeing kernel panic in cifs_reconnect function > > > while accessing tgt_list. Looks like tgt_list is not initialized > > > correctly. There are fixes already present in 5.10 and later trees. > > > Backporting them to 5.4 > > > > > > CIFS VFS: \\172.30.1.14 cifs_reconnect: no target servers for DFS > > > failover > > > BUG: unable to handle page fault for address: fffffffffffffff8 > > > #PF: supervisor read access in kernel mode > > > #PF: error_code(0x0000) - not-present page > > > PGD 260e067 P4D 260e067 PUD 2610067 PMD 0 > > > Oops: 0000 [#1] SMP PTI > > > RIP: 0010:cifs_reconnect+0x51d/0xef0 [cifs] > > > RSP: 0018:ffffc90000693da0 EFLAGS: 00010282 > > > RAX: fffffffffffffff8 RBX: ffff8887fa63b800 RCX: fffffffffffffff8 > > > Call Trace: > > > cifs_handle_standard+0x18d/0x1b0 [cifs] > > > cifs_demultiplex_thread+0xa5c/0xc90 [cifs] > > > kthread+0x113/0x130 > > > > > > *** BLURB HERE *** > > No blurb? > > > > And this says 5.4, yet your patches say 5.10? > > > > Totally confused... > > > > greg k-h > > These patches are applicable for 5.4. Will send another version with that > fixed. > Apologies for the mess. Please resend both series, as this one I already dropped from my queue. thanks, greg k-h