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Date:   Thu, 1 Apr 2021 00:24:42 +0800
From:   Jisheng Zhang <jszhang3@mail.ustc.edu.cn>
To:     Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Alexander Potapenko <glider@google.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        " =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?=" <bjorn@kernel.org>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>,
        Luke Nelson <luke.r.nels@gmail.com>,
        Xi Wang <xi.wang@gmail.com>
Cc:     linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
        kasan-dev@googlegroups.com, netdev@vger.kernel.org,
        bpf@vger.kernel.org
Subject: [PATCH v2 0/9] riscv: improve self-protection
Message-ID: <20210401002442.2fe56b88@xhacker>
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From: Jisheng Zhang <jszhang@kernel.org>

patch1 is a trivial improvement patch to move some functions to .init
section

Then following patches improve self-protection by:

Marking some variables __ro_after_init
Constifing some variables
Enabling ARCH_HAS_STRICT_MODULE_RWX


Since v1:
  - no need to move bpf_jit_alloc_exec() and bpf_jit_free_exec() to core
    because RV32 uses the default module_alloc() for jit code which also
    meets W^X after patch8
  - fix a build error caused by local debug code clean up

Jisheng Zhang (9):
  riscv: add __init section marker to some functions
  riscv: Mark some global variables __ro_after_init
  riscv: Constify sys_call_table
  riscv: Constify sbi_ipi_ops
  riscv: kprobes: Implement alloc_insn_page()
  riscv: bpf: Write protect JIT code
  riscv: bpf: Avoid breaking W^X on RV64
  riscv: module: Create module allocations without exec permissions
  riscv: Set ARCH_HAS_STRICT_MODULE_RWX if MMU

 arch/riscv/Kconfig                 |  1 +
 arch/riscv/include/asm/smp.h       |  4 ++--
 arch/riscv/include/asm/syscall.h   |  2 +-
 arch/riscv/kernel/module.c         | 10 ++++++++--
 arch/riscv/kernel/probes/kprobes.c |  8 ++++++++
 arch/riscv/kernel/sbi.c            | 10 +++++-----
 arch/riscv/kernel/smp.c            |  6 +++---
 arch/riscv/kernel/syscall_table.c  |  2 +-
 arch/riscv/kernel/time.c           |  2 +-
 arch/riscv/kernel/traps.c          |  2 +-
 arch/riscv/kernel/vdso.c           |  4 ++--
 arch/riscv/mm/init.c               | 12 ++++++------
 arch/riscv/mm/kasan_init.c         |  6 +++---
 arch/riscv/mm/ptdump.c             |  2 +-
 arch/riscv/net/bpf_jit_comp64.c    |  2 +-
 arch/riscv/net/bpf_jit_core.c      |  1 +
 16 files changed, 45 insertions(+), 29 deletions(-)

-- 
2.31.0