Re: [PATCH] ftrace: show debugging information when panic_on_warn set

[Steven Rostedt]

On Fri, 15 May 2020 10:08:28 +0000
Cheng Jian <cj.chengjian@xxxxxxxxxx> wrote:

> When an anomaly is detected in the function call modification
> code, ftrace_bug() is called to disable function tracing as well
> as give some warn and information that may help debug the problem.
> 
> But currently, we call FTRACE_WARN_ON_ONCE() first in ftrace_bug(),
> so when panic_on_warn is set, we can't see the debugging information
> here. Call FTRACE_WARN_ON_ONCE() at the end of ftrace_bug() to ensure
> that the debugging information is displayed first.
> 
> after this patch, the dmesg looks like:
> 

Thanks, I'll add this to my queue.

-- Steve