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Date: Thu, 14 Mar 2024 13:58:51 +0800 From: Dongliang Mu <dzm91@...t.edu.cn> To: Yanteng Si <siyanteng@...ngson.cn>, Alex Shi <alexs@...nel.org>, Jonathan Corbet <corbet@....net>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, Vegard Nossum <vegard.nossum@...cle.com> Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, llvm@...ts.linux.dev Subject: Re: [PATCH] docs/zh_CN: Add dev-tools/ubsan Chinese translation ping? On 2024/3/6 17:15, Yanteng Si wrote: > > 在 2024/3/2 22:00, Dongliang Mu 写道: >> Translate dev-tools/ubsan.rst into Chinese, add it into >> zh_CN/dev-tools/index.rst. >> >> Signed-off-by: Dongliang Mu <dzm91@...t.edu.cn> > > Reviewed-by: Yanteng Si <siyanteng@...ngson.cn> > > > Thanks, > > Yanteng > >> --- >> .../translations/zh_CN/dev-tools/index.rst | 2 +- >> .../translations/zh_CN/dev-tools/ubsan.rst | 91 +++++++++++++++++++ >> 2 files changed, 92 insertions(+), 1 deletion(-) >> create mode 100644 >> Documentation/translations/zh_CN/dev-tools/ubsan.rst >> >> diff --git a/Documentation/translations/zh_CN/dev-tools/index.rst >> b/Documentation/translations/zh_CN/dev-tools/index.rst >> index c2db3e566b1b..c4463f0750f0 100644 >> --- a/Documentation/translations/zh_CN/dev-tools/index.rst >> +++ b/Documentation/translations/zh_CN/dev-tools/index.rst >> @@ -22,13 +22,13 @@ >> Documentation/translations/zh_CN/dev-tools/testing-overview.rst >> sparse >> gcov >> kasan >> + ubsan >> gdb-kernel-debugging >> >> Todolist: >> >> - coccinelle >> - kcov >> - - ubsan >> - kmemleak >> - kcsan >> - kfence >> diff --git a/Documentation/translations/zh_CN/dev-tools/ubsan.rst >> b/Documentation/translations/zh_CN/dev-tools/ubsan.rst >> new file mode 100644 >> index 000000000000..2487696b3772 >> --- /dev/null >> +++ b/Documentation/translations/zh_CN/dev-tools/ubsan.rst >> @@ -0,0 +1,91 @@ >> +.. SPDX-License-Identifier: GPL-2.0 >> + >> +.. include:: ../disclaimer-zh_CN.rst >> + >> +:Original: Documentation/dev-tools/ubsan.rst >> +:Translator: Dongliang Mu <dzm91@...t.edu.cn> >> + >> +未定义行为消毒剂 - UBSAN >> +==================================== >> + >> +UBSAN是一种动态未定义行为检查工具。 >> + >> +UBSAN使用编译时插桩捕捉未定义行为。编译器在可能导致未定义行为的操作前插入特定 >> >> +检测代码。如果检查失败，即检测到未定义行为，__ubsan_handle_* >> 函数将被调用打印 >> +错误信息。 >> + >> +GCC自4.9.x [1_] （详见 ``-fsanitize=undefined`` >> 选项及其子选项）版本后引入这 >> +一特性。GCC 5.x 版本实现了更多检查器 [2_]。 >> + >> +报告样例 >> +-------------- >> + >> +:: >> + >> + >> ================================================================================ >> + UBSAN: Undefined behaviour in ../include/linux/bitops.h:110:33 >> + shift exponent 32 is to large for 32-bit type 'unsigned int' >> + CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.0-rc1+ #26 >> + 0000000000000000 ffffffff82403cc8 ffffffff815e6cd6 >> 0000000000000001 >> + ffffffff82403cf8 ffffffff82403ce0 ffffffff8163a5ed >> 0000000000000020 >> + ffffffff82403d78 ffffffff8163ac2b ffffffff815f0001 >> 0000000000000002 >> + Call Trace: >> + [<ffffffff815e6cd6>] dump_stack+0x45/0x5f >> + [<ffffffff8163a5ed>] ubsan_epilogue+0xd/0x40 >> + [<ffffffff8163ac2b>] >> __ubsan_handle_shift_out_of_bounds+0xeb/0x130 >> + [<ffffffff815f0001>] ? radix_tree_gang_lookup_slot+0x51/0x150 >> + [<ffffffff8173c586>] _mix_pool_bytes+0x1e6/0x480 >> + [<ffffffff83105653>] ? dmi_walk_early+0x48/0x5c >> + [<ffffffff8173c881>] add_device_randomness+0x61/0x130 >> + [<ffffffff83105b35>] ? dmi_save_one_device+0xaa/0xaa >> + [<ffffffff83105653>] dmi_walk_early+0x48/0x5c >> + [<ffffffff831066ae>] dmi_scan_machine+0x278/0x4b4 >> + [<ffffffff8111d58a>] ? vprintk_default+0x1a/0x20 >> + [<ffffffff830ad120>] ? early_idt_handler_array+0x120/0x120 >> + [<ffffffff830b2240>] setup_arch+0x405/0xc2c >> + [<ffffffff830ad120>] ? early_idt_handler_array+0x120/0x120 >> + [<ffffffff830ae053>] start_kernel+0x83/0x49a >> + [<ffffffff830ad120>] ? early_idt_handler_array+0x120/0x120 >> + [<ffffffff830ad386>] x86_64_start_reservations+0x2a/0x2c >> + [<ffffffff830ad4f3>] x86_64_start_kernel+0x16b/0x17a >> + >> ================================================================================ >> + >> +用法 >> +----- >> + >> +使用如下内核配置启用UBSAN:: >> + >> + CONFIG_UBSAN=y >> + >> +使用如下内核配置检查整个内核:: >> + >> + CONFIG_UBSAN_SANITIZE_ALL=y >> + >> +为了在特定文件或目录启动代码插桩，需要在相应的内核Makefile中添加一行类似内容: >> >> + >> +- 单文件（如main.o）:: >> + >> + UBSAN_SANITIZE_main.o := y >> + >> +- 一个目录中的所有文件:: >> + >> + UBSAN_SANITIZE := y >> + >> +即使设置了``CONFIG_UBSAN_SANITIZE_ALL=y``，为了避免文件被插桩，可使用:: >> + >> + UBSAN_SANITIZE_main.o := n >> + >> +与:: >> + >> + UBSAN_SANITIZE := n >> + >> +未对齐的内存访问检测可通过开启独立选项 - CONFIG_UBSAN_ALIGNMENT 检测。 >> +该选项在支持未对齐访问的架构上(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y) >> >> +默认为关闭。该选项仍可通过内核配置启用，但它将产生大量的UBSAN报告。 >> + >> +参考文献 >> +---------- >> + >> +.. _1: >> https://gcc.gnu.org/onlinedocs/gcc-4.9.0/gcc/Debugging-Options.html >> +.. _2: https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html >> +.. _3: https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html >> -- >> 2.39.2 >> >>
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