linux-kernel - [ftrace/kprobes PATCH 0/3] tracing: probeevent: Fix module symbol probing

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Date:   Wed, 29 Aug 2018 01:17:18 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     mhiramat@...nel.org, Ingo Molnar <mingo@...hat.com>,
        linux-kernel@...r.kernel.org,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [ftrace/kprobes PATCH 0/3] tracing: probeevent: Fix module symbol probing

Hi,

This series is for fixing some bugs in Steve's ftrace/kprobes branch.

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

Which is based on my fetcharg improvement series.

https://lkml.org/lkml/2018/4/25/601

This includes following fixes.

- Fix copy_from_user() misusing which Dan was reported.
- Fix to reject incorrect probeevent on loaded kernel module.
- Fix to update symbol-based argument on module.
  This also checks the symbol-based argument is correct or not when
  target module is loaded. If it is not correct, the event is kept
  unavailable.

Thank you,

---

Masami Hiramatsu (3):
      tracing/uprobes: Fix to return -EFAULT if copy_from_user failed
      tracing/kprobes: Check the probe on unloaded module correctly
      tracing/kprobes: Allow kprobe-events to record module symbol


 kernel/trace/trace_kprobe.c |   51 ++++++++++++++++++++++++++---------
 kernel/trace/trace_probe.c  |   62 +++++++++++++++++++++++++++++++++++++------
 kernel/trace/trace_probe.h  |    4 ++-
 kernel/trace/trace_uprobe.c |    2 +
 4 files changed, 95 insertions(+), 24 deletions(-)

--
Masami Hiramatsu (Linaro) <mhiramat@...nel.org>