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=-4.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 77F03C43381 for ; Wed, 20 Mar 2019 00:23:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B39B20828 for ; Wed, 20 Mar 2019 00:23:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726835AbfCTAXz convert rfc822-to-8bit (ORCPT ); Tue, 19 Mar 2019 20:23:55 -0400 Received: from mail.wl.linuxfoundation.org ([198.145.29.98]:38608 "EHLO mail.wl.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726686AbfCTAXz (ORCPT ); Tue, 19 Mar 2019 20:23:55 -0400 Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0545729911 for ; Wed, 20 Mar 2019 00:23:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EDC512992E; Wed, 20 Mar 2019 00:23:54 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 202897] BUG: unable to handle kernel paging request at __memmove Date: Wed, 20 Mar 2019 00:23:54 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: 389387252@qq.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=202897 --- Comment #4 from phoonchiang (389387252@qq.com) --- The following patch can fix this bug, but i'm not sure it is the best way to fix it. diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 86ed9c6..fd2ebba 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1695,7 +1695,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, /* No failures allowed past this point. */ - if (!s->not_found && here->e_value_size && here->e_value_offs) { + if (!s->not_found && here->e_value_size && here->e_value_offs && !here->e_value_inum) { /* Remove the old value. */ void *first_val = s->base + min_offs; size_t offs = le16_to_cpu(here->e_value_offs); -- You are receiving this mail because: You are watching the assignee of the bug.