linux-kernel - [for-next-3.11][PATCH 0/8] ftrace/tracing: Event file fixes and ftrace function hash fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 30 Jul 2013 07:27:18 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Oleg Nesterov <oleg@...hat.com>
Subject: [for-next-3.11][PATCH 0/8] ftrace/tracing: Event file fixes and ftrace function hash fixes

Oleg has been continuing his work on fixing a race between opening an
event file and deleting that same event. Using the i_private and event_mutex
to verify that the event still exists to solve the race.

A long standing bug on the ftrace hash accounting has finally been figured
out. When tracing a module that is removed and then reloaded, the function
filter hash gets out of sync with the function record's ref count which
causes a nasty warning and disabling of the function tracer.

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
for-next

Head SHA1: 6fd52fce057b55cc1bba463e6f05536a76c058b4


Oleg Nesterov (6):
      tracing: Turn event/id->i_private into call->event.type
      tracing: Change event_enable/disable_read() to verify i_private != NULL
      tracing: Change event_filter_read/write to verify i_private != NULL
      tracing: Change f_start() to take event_mutex and verify i_private != NULL
      tracing: Introduce remove_event_file_dir()
      tracing: Change remove_event_file_dir() to clear "d_subdirs"->i_private

Steven Rostedt (Red Hat) (2):
      ftrace: Consolidate some duplicate code for updating ftrace ops
      ftrace: Clear module traced functions on unload module

----
 kernel/trace/ftrace.c              |   76 +++++++++++++++--
 kernel/trace/trace_events.c        |  159 ++++++++++++++++++++----------------
 kernel/trace/trace_events_filter.c |   17 ++--
 3 files changed, 164 insertions(+), 88 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/