Re: mm: mmap_sem lock assertion failure in __mlock_vma_pages_range

[Sasha Levin]

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.


Thanks,
Sasha

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/