Re: [LKP] Re: [refcount] d2d337b185: WARNING:at_lib/refcount.c:#refcount_warn_saturate

[Rong Chen]

On 12/3/19 4:09 PM, Will Deacon wrote:
> On Tue, Dec 03, 2019 at 04:01:46PM +0800, Rong Chen wrote:
> > On 12/2/19 5:43 PM, Ard Biesheuvel wrote:
> > > On Sun, 1 Dec 2019 at 16:49, kernel test robot <rong.a.chen@xxxxxxxxx> wrote:
> > > > FYI, we noticed the following commit (built with gcc-7):
> > > >
> > > > commit: d2d337b185bd2abff262f3cf7de0080b3888e41c ("[RESEND PATCH v4
> > > > 08/10] refcount: Consolidate implementations of refcount_t")
> > > > url:
> > > > https://github.com/0day-ci/linux/commits/Will-Deacon/Rework-REFCOUNT_FULL-using-atomic_fetch_-operations/20191124-052413
> > > >
> > > >
> > > > in testcase: ocfs2test
> > > > with following parameters:
> > > >
> > > >           disk: 1SSD
> > > >           test: test-mkfs
> > > So we went from a success rate of 0 out of 24 to 0 out of 24 by
> > > applying that patch. How on earth is that a result that justifies
> > > spamming everybody?
> > These failures were triggered by ocfs2test test, and all tests were failed
> > include parent commit "2ab80bd4ae".
> https://lore.kernel.org/lkml/20191119182745.GA11397@willie-the-truck
> https://lore.kernel.org/lkml/20190912105640.2l6mtdjmcyyhmyun@willie-the-truck/
>
> The refcount code is doing its job afaict and its the ocfs2 code at fault.
>
> Will

Hi Will,

Thanks for your explanation, we'll disable the test.

Best Regards,
Rong Chen