Messages in this thread | | | Date | Tue, 30 Sep 2014 09:46:45 -0700 | Subject | Re: pipe/page fault oddness. | From | Linus Torvalds <> |
| |
On Tue, Sep 30, 2014 at 9:40 AM, Dave Jones <davej@redhat.com> wrote: > > ah, echo 0 > tracing_on isn't enough, I had to 0 out set_ftrace_pid too. > Never mind. Subsequent traces all looking the same, minus the tracing > junk though.
Yeah, looks like that copy_page_to_iter+0x3b3 is always there.
> Is there some way I can figure out what address it's faulting on ? > I wonder if that might give some clues.
Could be useful. There's a trace_page_fault_kernel() entry that should give it to you, along with error code.
Linus
| |