On Tue, Jun 20, 2017 at 10:32:00AM +0800, Linus Torvalds wrote:
> On Tue, Jun 20, 2017 at 8:26 AM, Dave Jones <[email protected]> wrote:
> > > Hugh Dickins (1):
> > > mm: larger stack guard gap, between vmas
> >
> > This seems to be buggered.
> >
> > 002331 00000396712307 0 2 kernel BUG at mm/mmap.c:1963!
> > 002332 00000396712414 0 4 invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC
> > 002333 00000396712541 0 4 CPU: 0 PID: 4572 Comm: trinity-c41 Not tainted
> > 4.12.0-rc6-think+ #1
> > 002336 00000396712959 0 4 RIP: 0010:unmapped_area_topdown+0xa5/0x170
>
> Dave, do you have instructions for Hugh to recreate that with trinity
> (or perhaps some way to generate a test-case from trinity?). Or does
> it trigger easily by just running trinity?
trinity -c mmap hits it instantly for me. I'm using latest -git version,
but afair, even the older versions would hit this.
> I'm in China right now, and will be traveling again this afternoon, so
> I probably can't look at it myself until later, but hopefully Hugh has
> the cycles to follow up in it..
I'll figure out the exact params in the morning if no-one has it figured
out overnight.
Dave
