linux-kernel - Re: [PATCH v4 00/18] of: overlay: validation checks, subsequent fixes

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Date:   Wed, 17 Oct 2018 16:16:47 -0500
From:   Alan Tull <atull@...nel.org>
To:     Frank Rowand <frowand.list@...il.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Rob Herring <robh+dt@...nel.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Moritz Fischer <mdf@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, linux-fpga@...r.kernel.org
Subject: Re: [PATCH v4 00/18] of: overlay: validation checks, subsequent fixes

On Tue, Oct 16, 2018 at 10:08 PM Frank Rowand <frowand.list@...il.com> wrote:
>
> On 10/16/18 02:47, Michael Ellerman wrote:
> > frowand.list@...il.com writes:
> >
> >> From: Frank Rowand <frank.rowand@...y.com>
> >>
> >> Add checks to (1) overlay apply process and (2) memory freeing
> >> triggered by overlay release.  The checks are intended to detect
> >> possible memory leaks and invalid overlays.
> >>
> >> The checks revealed bugs in existing code.  Fixed the bugs.
> >>
> >> While fixing bugs, noted other issues, which are fixed in
> >> separate patches.
> >>
> >> *****  Powerpc folks: I was not able to test the patches that
> >> *****  directly impact Powerpc systems that use dynamic
> >> *****  devicetree.  Please review that code carefully and
> >> *****  test.  The specific patches are: 03/16, 04/16, 07/16
> >
> > Hi Frank,
> >
> > Do you have this series in a git tree somewhere?
> >
> > I tried applying it on top of linux-next but hit some conflicts which I
> > couldn't easily resolve.
> >
> > cheers
> >
>
>
>
> git://git.kernel.org/pub/scm/linux/kernel/git/frowand/linux.git
>
> $ git checkout v4.19-rc1--kfree_validate--v4
>
> $ git log --oneline v4.19-rc1..
> 2ba1b7d353dd of: unittest: initialize args before calling of_*parse_*()
> 4f9108209f79 of: unittest: find overlays[] entry by name instead of index
> 353403c76ff8 of: unittest: allow base devicetree to have symbol metadata
> 8fc37e04a01b of: overlay: set node fields from properties when add new overlay n
> 05d5df0e5151 of: unittest: remove unused of_unittest_apply_overlay() argument
> 8c021cba757a of: overlay: check prevents multiple fragments touching same proper
> 797a6f66e039 of: overlay: check prevents multiple fragments add or delete same n
> c385e25a040d of: overlay: test case of two fragments adding same node
> c88fd240f0e0 of: overlay: make all pr_debug() and pr_err() messages unique
> 1028a215d32a of: overlay: validate overlay properties #address-cells and #size-c
> f1a97ef74ce4 of: overlay: reorder fields in struct fragment
> ffe78cf7a1fb of: dynamic: change type of of_{at,de}tach_node() to void
> 5f5ff8ec0c0c of: overlay: do not duplicate properties from overlay for new nodes
> 06e72dcb2bb0 of: overlay: use prop add changeset entry for property in new nodes
> a02f8d326a08 powerpc/pseries: add of_node_put() in dlpar_detach_node()
> e203be664330 of: overlay: add missing of_node_get() in __of_attach_node_sysfs
> 8eb46208e7c8 of: overlay: add missing of_node_put() after add new node to change
> b22067db7cf9 of: overlay: add tests to validate kfrees from overlay removal

That branch is a real time saver, thanks!

ALan