Re: Regression in linux-next

[Petri Latvala]

On 10/16/2017 03:54 PM, Thomas Gleixner wrote:
> On Mon, 16 Oct 2017, Thomas Gleixner wrote:
> > On Mon, 16 Oct 2017, Petri Latvala wrote:
> > > > That should dump the trace buffer when the bug hits. I try to reproduce
> > > > myself.
> > > With those:
> > >
> > > # rtcwake -s 15 -m mem
> > >
> > > [   67.069522] kernel BUG at arch/x86/kernel/apic/vector.c:154!
> > > [   67.075509] invalid opcode: 0000 [#1] PREEMPT SMP
> > > [   67.080481] Dumping ftrace buffer:
> > Hrm. I completely forgot that this does not dump the buffers of offline
> > CPUs. So half of the information is missing. So forget the tracer for now.
> >
> > Can you please apply the debug patch below and provide the full dmesg
> > output?
> >
> > Its going to be too big for LKML so either upload it somewhere or send it
> > to me in private mail.
> >
> > Note, I removed the BUG_ON, so box might survive suspend/resume but it
> > should trigger that printout.
> Forgot to add the counterpart to the clear side. Updated patch below.


http://paste.debian.net/991048/


--
Petri Latvala