On 03/11/2014 05:45 PM, Davidlohr Bueso wrote:
On Tue, 2014-03-11 at 17:02 -0400, Sasha Levin wrote:
>On 03/11/2014 04:47 PM, Davidlohr Bueso wrote:
> >>Bingo! With the above patch:
> >> >
> >> >[ 243.565794] kernel BUG at mm/vmacache.c:76!
> >> >[ 243.566720] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
> >> >[ 243.568048] Dumping ftrace buffer:
> >> >[ 243.568740] (ftrace buffer empty)
> >> >[ 243.569481] Modules linked in:
> >> >[ 243.570203] CPU: 10 PID: 10073 Comm: trinity-c332 Tainted: G W 3.14.0-rc5-next-20140307-sasha-00010-g1f812cb-dirty #143
> >and this is also part of the DEBUG_PAGEALLOC + trinity combo! I suspect
> >the root cause it the same as Fengguang's report.
>
>The BUG still happens without DEBUG_PAGEALLOC.
Any idea what trinity itself is doing?
Could you add the following, I just want to make sure the bug isn't
being caused by an overflow:
Not hitting that WARN.
Thanks,
Sasha
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