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 6A2F1EE3F0B for ; Tue, 12 Sep 2023 18:22:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237346AbjILSW1 (ORCPT ); Tue, 12 Sep 2023 14:22:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231197AbjILSWZ (ORCPT ); Tue, 12 Sep 2023 14:22:25 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15505115 for ; Tue, 12 Sep 2023 11:22:22 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACF34C433C8; Tue, 12 Sep 2023 18:22:21 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qg824-000JQt-0P; Tue, 12 Sep 2023 14:22:40 -0400 Message-ID: <20230912182213.795801173@goodmis.org> User-Agent: quilt/0.66 Date: Tue, 12 Sep 2023 14:22:13 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Andrew Morton Subject: [for-linus][PATCH 0/3] tracing: Some more fixes before pushing to 6.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tracing updates for 6.6: - Fix NULL pointer dereference with eventfs_remove_rec() If an allocation fails in one of the eventfs_add_*() functions, the caller of it in event_subsystem_dir() or event_create_dir() assigns the result to the structure. But it's assigning the ERR_PTR and not NULL. This was passed to eventfs_remove_rec() which expects either a good pointer or a NULL, not ERR_PTR. The fix is to not assign the ERR_PTR to the structure, but to keep it NULL on error. - Fix list_for_each_rcu() to use list_for_each_srcu() in dcache_dir_open_wrapper(). One iteration of the code used RCU but because it had to call sleepable code, it had to be changed to use SRCU, but one of the iterations was missed. - Fix synthetic event print function to use "as_u64" instead of passing in a pointer to the union. To fix big/little endian issues, the u64 that represented several types was turned into a union to define the types properly. git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git trace/urgent Head SHA1: c8414dab164a74bd3bb859a2d836cb537d6b9298 Jinjie Ruan (1): eventfs: Fix the NULL pointer dereference bug in eventfs_remove_rec() Steven Rostedt (Google) (1): tracefs/eventfs: Use list_for_each_srcu() in dcache_dir_open_wrapper() Tero Kristo (1): tracing/synthetic: Print out u64 values properly ---- fs/tracefs/event_inode.c | 3 ++- kernel/trace/trace_events.c | 13 +++++++++---- kernel/trace/trace_events_synth.c | 2 +- 3 files changed, 12 insertions(+), 6 deletions(-)