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

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Date:   Fri, 4 Dec 2020 13:42:57 +0800
From:   Eric Lin <tesheng@...estech.com>
To:     <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>, <palmer@...belt.com>,
        <paul.walmsley@...ive.com>
CC:     Eric Lin <tesheng@...estech.com>
Subject: [PATCH v3 0/2] Let illegal access to user-space memory die

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(-)

-- 
2.17.0