linux-kernel - Re: [PATCH v2 0/2] Let illegal access to user-space memory die

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Message-ID: <20201203081655.GB25276@atcfdc88>
Date:   Thu, 3 Dec 2020 16:16:55 +0800
From:   Eric Lin <tesheng@...estech.com>
To:     Pekka Enberg <penberg@...il.com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Michel Lespinasse <walken@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>, Peter Xu <peterx@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH v2 0/2] Let illegal access to user-space memory die

On Thu, Dec 03, 2020 at 03:29:57PM +0800, Pekka Enberg wrote:

Hi Pekka, 

> Hi Eric,
> 
> On Thu, Dec 3, 2020 at 8:51 AM Eric Lin <tesheng@...estech.com> wrote:
> >
> > Accesses to user-space memory without calling uaccess routine
> > leads to hanging in page fault handler. Like arm64, we let it
> > die earlier in page fault handler.
> >
> > Changes in v2:
> >     -Add a die_kernel_fault() helper
> >     -Split one long line code into two
> 
> Please also make no_context() use the new helper. Other than that:
> 

OK, I'll make no_context() use the new helper in v3.
Thanks for your review.

> Reviewed-by: Pekka Enberg <penberg@...nel.org>