linux-kernel - Re: [GIT PULL] tracing: Fixes for v5.5

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Date:   Tue, 21 Jan 2020 10:05:20 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [GIT PULL] tracing: Fixes for v5.5

On Tue, 21 Jan 2020 09:49:06 -0500
Steven Rostedt <rostedt@...dmis.org> wrote:

> Linus,
> 
> Various tracing fixes:
> 
>  - Fix a function comparison warning for a xen trace event macro
>  - Fix a double perf_event linking to a trace_uprobe_filter for multiple events
>  - Fix suspicious RCU warnings in trace event code for using
>     list_for_each_entry_rcu() when the "_rcu" portion wasn't needed.
>  - Fix a bug in the histogram code when using the same variable
>  - Fix a NULL pointer dereference when tracefs lockdown enabled and calling
>     trace_set_default_clock()
> 
> 
> Please pull the latest trace-v5.5-rc6 tree, which can be found at:

Hi Linus,

Hold off on pulling this. Peter just notified me there's an issue with
one of the patches.

-- Steve

> 
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> trace-v5.5-rc6
> 
> Tag SHA1: f920461f2655601c33276a60a2fb39d0b4f24e28
> Head SHA1: bf24daac8f2bd5b8affaec03c2be1d20bcdd6837
> 
> 
> Changbin Du (1):
>       tracing: xen: Ordered comparison of function pointers
> 
> Masami Hiramatsu (2):
>       tracing/uprobe: Fix double perf_event linking on multiprobe uprobe
>       tracing: trigger: Replace unneeded RCU-list traversals
> 
> Masami Ichikawa (1):
>       tracing: Do not set trace clock if tracefs lockdown is in effect
> 
> Steven Rostedt (VMware) (1):
>       tracing: Fix histogram code when expression has same var as value
> 
> ----
>  include/trace/events/xen.h          |   6 +-
>  kernel/trace/trace.c                |   5 ++
>  kernel/trace/trace_events_hist.c    |  63 ++++++++++++++----
>  kernel/trace/trace_events_trigger.c |  20 ++++--
>  kernel/trace/trace_kprobe.c         |   2 +-
>  kernel/trace/trace_probe.c          |   5 +-
>  kernel/trace/trace_probe.h          |   3 +-
>  kernel/trace/trace_uprobe.c         | 124 +++++++++++++++++++++++-------------
>  8 files changed, 163 insertions(+), 65 deletions(-)
> ---------------------------
> diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h
>