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Date: Wed, 3 Jan 2024 13:51:53 +0100
From: Petr =?UTF-8?B?VGVzYcWZw61r?= <petr@tesarici.cz>
To: Richard Weinberger <richard@nod.at>, Anton Ivanov
 <anton.ivanov@cambridgegreys.com>, Johannes Berg
 <johannes@sipsolutions.net>
Cc: Petr Tesarik <petrtesarik@huaweicloud.com>, linux-um@lists.infradead.org
 (open list:USER-MODE LINUX (UML)), linux-kernel@vger.kernel.org (open
 list), Roberto Sassu <roberto.sassu@huaweicloud.com>, Petr Tesarik
 <petr.tesarik1@huawei-partners.com>
Subject: Re: [PATCH 0/2] um: improve UML page fault handling
Message-ID: <20240103135153.4696cb0f@meshulam.tesarici.cz>
In-Reply-To: <20231215121431.680-1-petrtesarik@huaweicloud.com>
References: <20231215121431.680-1-petrtesarik@huaweicloud.com>
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Happy New Year, everyone!

I can fully understand that you all have had other priorities around
the year end; it was no different with me. ;-)

However, may I kindly ask for some feedback on my proposed fixes?

Petr T

On Fri, 15 Dec 2023 13:14:29 +0100
Petr Tesarik <petrtesarik@huaweicloud.com> wrote:

> From: Petr Tesarik <petr.tesarik1@huawei-partners.com>
> 
> Improve UML handling of segmentation faults in kernel mode. Although
> such page faults are generally caused by a kernel bug, it is annoying
> if they cause an infinite loop, or panic the kernel. More importantly,
> a robust implementation allows to write KUnit tests for various guard
> pages, preventing potential kernel self-protection regressions.
> 
> Petr Tesarik (2):
>   um: do not panic on kernel mode faults
>   um: oops on accessing an non-present page in the vmalloc area
> 
>  arch/um/kernel/trap.c | 19 ++++++++++++++-----
>  1 file changed, 14 insertions(+), 5 deletions(-)
>