linux-kernel - Re: [PATCH v2 22/44] mmap: Pass through vmi iterator to __split

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Date:   Mon, 9 Jan 2023 16:45:46 +0000
From:   Liam Howlett <liam.howlett@...cle.com>
To:     SeongJae Park <sj@...nel.org>
CC:     "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2 22/44] mmap: Pass through vmi iterator to __split_vma()

* SeongJae Park <sj@...nel.org> [230106 21:40]:
> Hello Liam,
> 
> On Sat, 7 Jan 2023 02:01:26 +0000 SeongJae Park <sj@...nel.org> wrote:
> 
> > Hello Liam,
> > 
> > 
> > I found 'make install' mm-unstable kernel fails from initramfs stage with
> > 'not a dynamic executable' message.  I confirmed the issue is not reproducible
> > before your patchset[1] but after the series[2].
> > 
> > I tried to bisect, but on a commit[3] middle of mm-unstable tree which this
> > patch is applied, I get below error while booting.  Do you have an idea?
> 
> I further bisected for the boot failure.  The first bad commit was a8e0f2e12936
> ("mmap: change do_mas_munmap and do_mas_aligned_munmap() to use vma
> iterator")[1].  The stacktrace on the commit is as below.
> 
...

Thanks for your work on this.

I have found the issue and will send out a fix shortly.  I am not
handling the invalidated state correctly in the write path.