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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2A9EC433EF for ; Mon, 27 Sep 2021 17:18:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0306615E3 for ; Mon, 27 Sep 2021 17:18:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237022AbhI0RUO (ORCPT ); Mon, 27 Sep 2021 13:20:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:35166 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237265AbhI0RSP (ORCPT ); Mon, 27 Sep 2021 13:18:15 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B762861213; Mon, 27 Sep 2021 17:12:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1632762739; bh=qpgKfRSy0WRL//yUVgg/fqWsO5jm6cAXesAzEz4hoBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B2A5mNmbKTHIiPKv1PAd34pvMoK330B6O6wGTmDF3FvPiYVvCRvtQtO5cUGilDplZ izBTrdOXj8VUUnPztnymfVBtZn6MlmH181UEIZ1eEWPjgqmSk8Psl1ou1KXIb6GMHP gsH61qVM+YGoT4Sxn5KAZceGtXx1OxrM+WFEPrnw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chao Yu , Gao Xiang Subject: [PATCH 5.14 034/162] erofs: fix up erofs_lookup tracepoint Date: Mon, 27 Sep 2021 19:01:20 +0200 Message-Id: <20210927170234.652366457@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210927170233.453060397@linuxfoundation.org> References: <20210927170233.453060397@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Gao Xiang commit 93368aab0efc87288cac65e99c9ed2e0ffc9e7d0 upstream. Fix up a misuse that the filename pointer isn't always valid in the ring buffer, and we should copy the content instead. Link: https://lore.kernel.org/r/20210921143531.81356-1-hsiangkao@linux.alibaba.com Fixes: 13f06f48f7bf ("staging: erofs: support tracepoint") Cc: stable@vger.kernel.org # 4.19+ Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman --- include/trace/events/erofs.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/include/trace/events/erofs.h +++ b/include/trace/events/erofs.h @@ -35,20 +35,20 @@ TRACE_EVENT(erofs_lookup, TP_STRUCT__entry( __field(dev_t, dev ) __field(erofs_nid_t, nid ) - __field(const char *, name ) + __string(name, dentry->d_name.name ) __field(unsigned int, flags ) ), TP_fast_assign( __entry->dev = dir->i_sb->s_dev; __entry->nid = EROFS_I(dir)->nid; - __entry->name = dentry->d_name.name; + __assign_str(name, dentry->d_name.name); __entry->flags = flags; ), TP_printk("dev = (%d,%d), pnid = %llu, name:%s, flags:%x", show_dev_nid(__entry), - __entry->name, + __get_str(name), __entry->flags) );