linux-kernel - Re: [PATCH] fs/ntfs3: Fix memory corruption when page

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Message-ID: <a60fc742-0ad4-498d-b90f-793b9578b843@leemhuis.info>
Date: Mon, 1 Jul 2024 14:53:55 +0200
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Cc: popcorn mix <popcornmix@...il.com>, ntfs3@...ts.linux.dev,
 Linux-fsdevel <linux-fsdevel@...r.kernel.org>,
 LKML <linux-kernel@...r.kernel.org>,
 Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: Re: [PATCH] fs/ntfs3: Fix memory corruption when page_size changes

[CCing a few lists]

Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
for once, to make this easily accessible to everyone.

Konstantin, what's the status of this regression report or the patch Dom
Cobley propsed to fix the issue? From here it looks like it fall through
the cracks, but I might be missing something.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

#regzbot poke

On 14.06.24 18:24, popcorn mix wrote:
> On Fri, Jun 14, 2024 at 4:55 PM Dom Cobley <popcornmix@...il.com> wrote:
>> The kernel panic can be observed when connecting an
>> ntfs formatted drive that has previously been connected
>> to a Windows machine to a Raspberry Pi 5, which by defauilt
>> uses a 16K kernel pagesize.
> 
> Here are links to some bug reports about the issue:
> https://github.com/raspberrypi/linux/issues/6036
> https://forum.libreelec.tv/thread/28620-libreelec-12-0-rpi5-and-ntfs-hdd-problem/?postID=192713#post192713
> https://forums.raspberrypi.com/viewtopic.php?p=2203090#p2203090
> https://forums.raspberrypi.com/viewtopic.php?t=367545
> 
> The common points are it occurs on the (default) 16K pagesize kernel,
> but switching to 4K pagesize kernel
> avoids the issue.
> 
> Issue wasn't present in previous RPiOS LTS kernel (6.1), but is
> present in current LTS kernel (6.6).
> Revering to 6.1 kernel avoids the issue.
> 
> I've confirmed that reverting the commit:
> 865e7a7700d9 ("fs/ntfs3: Reduce stack usage")
> 
> avoids the issue.
> 
> This patch avoids the issue for me, and I'd like confirmation it is correct.