linux-kernel - Re: [PATCH v3 0/2] Let illegal access to user-space memory die

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Message-ID: <mhng-607cbd62-adc5-45a7-adde-476741f9d63b@palmerdabbelt-glaptop>
Date:   Mon, 21 Dec 2020 18:35:14 -0800 (PST)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     tesheng@...estech.com
CC:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        walken@...gle.com, vbabka@...e.cz, peterx@...hat.com,
        akpm@...ux-foundation.org, penberg@...nel.org,
        aou@...s.berkeley.edu, Paul Walmsley <paul.walmsley@...ive.com>,
        tesheng@...estech.com
Subject:     Re: [PATCH v3 0/2] Let illegal access to user-space memory die

On Thu, 03 Dec 2020 21:42:57 PST (-0800), 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 v3:
> 	-Let no_context() use die_kernel_fault() helper
>
> Changes in v2:
>     -Add a die_kernel_fault() helper
>     -Split one long line code into two
>
> Eric Lin (2):
>   riscv/mm: Introduce a die_kernel_fault() helper function
>   riscv/mm: Prevent kernel module to access user memory without uaccess
>     routines
>
>  arch/riscv/mm/fault.c | 28 ++++++++++++++++++++++------
>  1 file changed, 22 insertions(+), 6 deletions(-)

Thanks, these will be on for-next when the merge window ends.