lkml.org 
[lkml]   [2015]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: perf, kprobes: fuzzer generates huge number of WARNings
On Mon, 6 Jul 2015, Steven Rostedt wrote:

> On Mon, 6 Jul 2015 17:27:04 -0400 (EDT)
> Vince Weaver <vincent.weaver@maine.edu> wrote:
> > [ 3521.650521] ---[ end trace a413501925547ed5 ]---
> > [ 3521.655960] ftrace failed to modify [<ffffffff81196730>] handle_mm_fault+0x0/0x1750
> > [ 3521.664767] actual: e8:cb:18:ef:1e
>
> Hmm, it was not expecting to see this address above in the mcount slot.
> Did you have other tracing going on, or did you add a kprobe to
> handle_mm_fault too?

it's fuzzing so there were potentially a large number of tracepoint events
active at the time. Only one kprobe event,
p:probe/VMW _text+1664816
and I forget what that actually mapped to originally.

Vince


\
 
 \ /
  Last update: 2015-07-07 06:01    [W:0.116 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site