linux-kernel - RE: [PATCH v2 4/4] PCI: hv: kmemleak: Track the page allocations for struct hv_pcibus

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Message-ID: <PU1P153MB01698E8C1990284FB7F39E1FBF4E0@PU1P153MB0169.APCP153.PROD.OUTLOOK.COM>
Date:   Thu, 21 Nov 2019 00:53:47 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "sashal@...nel.org" <sashal@...nel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: RE: [PATCH v2 4/4] PCI: hv: kmemleak: Track the page allocations for
 struct hv_pcibus_device

> From: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Sent: Wednesday, November 20, 2019 9:12 AM
> 
> On Tue, Nov 19, 2019 at 11:16:58PM -0800, Dexuan Cui wrote:
> > The page allocated for struct hv_pcibus_device contains pointers to other
> > slab allocations in new_pcichild_device(). Since kmemleak does not track
> > and scan page allocations, the slab objects will be reported as leaks
> > (false positives). Use the kmemleak APIs to allow tracking of such pages.
> >
> > Reported-by: Lili Deng <v-lide@...rosoft.com>
> > Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> > ---
> >
> > This is actually v1. I use "v2" in the Subject just to be consistent with
> > the other patches in the patchset.
> 
> That's a mistake, you should have posted patches separately. I need

Got it. I'll remember to do it separately in future.

> hyper-V ACKs on this series to get it through.
> 
> Thanks,
> Lorenzo

Sure. I'm asking the Hyper-V maintainers to review the patchset.

Thanks,
-- Dexuan