linux-kernel - Re: [PATCH v8 14/21] mm/mmap: Avoid zeroing vma tree in mmap

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Message-ID: <60d07aa7-e5d3-4b4b-a497-9665be68448f@lucifer.local>
Date: Thu, 3 Oct 2024 11:46:46 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Bert Karwatzki <spasswolf@....de>
Cc: "Liam R . Howlett" <Liam.Howlett@...cle.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 14/21] mm/mmap: Avoid zeroing vma tree in mmap_region()

On Thu, Oct 03, 2024 at 12:41:33PM +0200, Bert Karwatzki wrote:
> Here's the log procduced by this kernel:
> 79012bc73c33 (HEAD -> maple_tree_debug) maybe fix
> db8adf7c0a23 hack: mm: see if we can get some more information 2
> 7e3bb072761a mm: correct error handling in mmap_region()
> 77df9e4bb222 (tag: next-20241001, origin/master, origin/HEAD, master) Add linux-next specific files for 20241001
> The "maybe fix" did not work, as you already expected.
>
> Bert Karwatzki

[snip]

Thanks!

The 'maybe fix 2' I sent separately I strongly suspect _might_ fix this,
please give that one a go, it might finally put this to rest. The fix there
aligns very well with what we're seeing.

If not well then, we have more info in this log at least :)

Cheers, Lorenzo