linux-kernel - Re: [syzbot] [mm?] possible deadlock in __vma_start

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Message-ID: <59aed5fa-1d19-442b-9b7b-a99aee9b7689@lucifer.local>
Date: Mon, 2 Jun 2025 15:19:40 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Suren Baghdasaryan <surenb@...gle.com>
Cc: syzbot <syzbot+23de6daeb71241d36a18@...kaller.appspotmail.com>,
        Liam.Howlett@...cle.com, akpm@...ux-foundation.org, jannh@...gle.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, pfalcato@...e.de,
        syzkaller-bugs@...glegroups.com, vbabka@...e.cz
Subject: Re: [syzbot] [mm?] possible deadlock in __vma_start_write

On Mon, Jun 02, 2025 at 07:16:40AM -0700, Suren Baghdasaryan wrote:
> On Mon, Jun 2, 2025 at 6:04 AM Lorenzo Stoakes
> <lorenzo.stoakes@...cle.com> wrote:
> >
> > +cc Suren
> >
> > Suren - could you take a look at this please?
>
> Sure. I'll take a look today or tomorrow once I sort out my email
> backlog. I was away for 10 days and have 2K emails to go through.
>

Oh man and I thought my inbox was bad :) Sorry to add to it!

No pressure, just a weird locking case, I'm wondering if there's something
here or we just need to teach lockdep that this situation is ok.

Hope you had some nice time away anyway :)

Cheers, Lorenzo