macOS 12 Monterey 上的内存检查？

Question

Valgrind 现在与 macOS 12 不兼容，我尝试添加编译标志-fsanitize=address，但出现链接错误：

Undefined symbols for architecture x86_64:
  "___asan_init", referenced from:
      _asan.module_ctor in main.cpp.o
  "___asan_version_mismatch_check_apple_clang_1300", referenced from:
      _asan.module_ctor in main.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

有没有办法让 Valgrind 与 macOS 12 兼容？

Answer 1

我没有足够的声誉来评论 Paul 的帖子。 在我进行他所说的更改后，我收到以下错误。 我目前正在使用 Intel i7 的 Monterey 12.1 Beta (21C5021h)。

./vg-in-place yes
==30798== Memcheck, a memory error detector
==30798== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==30798== Using Valgrind-3.18.0.GIT-lbmacos and LibVEX; rerun with -h for copyright info
==30798== Command: yes
==30798== 
==30798== Invalid read of size 8
==30798==    at 0x100017126: cerror_nocancel (in /usr/lib/dyld)
==30798==    by 0x1000156E8: kdebug_is_enabled (in /usr/lib/dyld)
==30798==    by 0x10004215B: dyld3::kdebug_trace_dyld_marker(unsigned int, dyld3::kt_arg, dyld3::kt_arg, dyld3::kt_arg, dyld3::kt_arg) (in /usr/lib/dyld)
==30798==    by 0x100019375: (below main) (in /usr/lib/dyld)
==30798==  Address 0x8 is not stack'd, malloc'd or (recently) free'd
==30798== 
==30798== 
==30798== Process terminating with default action of signal 11 (SIGSEGV)
==30798==  Access not within mapped region at address 0x8
==30798==    at 0x100017126: cerror_nocancel (in /usr/lib/dyld)
==30798==    by 0x1000156E8: kdebug_is_enabled (in /usr/lib/dyld)
==30798==    by 0x10004215B: dyld3::kdebug_trace_dyld_marker(unsigned int, dyld3::kt_arg, dyld3::kt_arg, dyld3::kt_arg, dyld3::kt_arg) (in /usr/lib/dyld)
==30798==    by 0x100019375: (below main) (in /usr/lib/dyld)
==30798==  If you believe this happened as a result of a stack
==30798==  overflow in your program's main thread (unlikely but
==30798==  possible), you can try to increase the size of the
==30798==  main thread stack using the --main-stacksize= flag.
==30798==  The main thread stack size used in this run was 8388608.
==30798== 
==30798== HEAP SUMMARY:
==30798==     in use at exit: 0 bytes in 0 blocks
==30798==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==30798== 
==30798== All heap blocks were freed -- no leaks are possible
==30798== 
==30798== For lists of detected and suppressed errors, rerun with: -s
==30798== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
./vg-in-place: line 31: 30798 Segmentation fault: 11  VALGRIND_LIB="$vgbasedir/.in_place" VALGRIND_LIB_INNER="$vgbasedir/.in_place" "$vgbasedir/coregrind/valgrind" "$@"

Answer 2

是否有任何通过 macports 或 brew 提供的补丁可以让您在 macOS 12 上安装 Valgrind？

这都是资源问题。我认为我是唯一使用 macOS 的活跃 Valgrind 开发人员，但我的重点是 FreeBSD。有点遗憾的是，苹果（撰写本文时市值为 2.4 万亿美元）无法付出相对较小的努力来实现这一目标。有几位 IBM 工程师做出了贡献（直接为 s390 和 PPC，间接通过 RedHat）。

Valgrind 配置脚本所需的更改非常小。

试试这个

• 克隆https://github.com/LouisBrunner/valgrind-macos/tree/feature/macos_11pp2
• 编辑configure.ac
• 在第 430 行后添加 AC_DEFINE([DARWIN_12_00], 120000, [DARWIN_VERS value for macOS 12.0])
• 为 XCode 12 添加新版本： 第 435 行之后

AC_DEFINE([XCODE_12_0], 110000, [XCODE_VERS value for Xcode 12.0])

555 行之后

12.*)
            AC_DEFINE([XCODE_VERS], XCODE_12_0, [Xcode version])
            ;;

• 复制内核版本 21.0（第 526 行）的 case 块，类似于

       # comes after the 20.0) case
       21.*)
      AC_MSG_RESULT([Darwin 21.x (${kernel}) / macOS 12 Monterey])
      AC_DEFINE([DARWIN_VERS], DARWIN_12_00, [Darwin / Mac OS X version])
      DEFAULT_SUPP="darwin20.supp ${DEFAULT_SUPP}"
      DEFAULT_SUPP="darwin10-drd.supp ${DEFAULT_SUPP}"
                  ;;

• （暂时忽略抑制版本）
• 运行./autogen.sh
• 运行./configure
• 运行make
• 如果所有工作都运行./vg-in-place yes

完成上述操作，再加上对 DARWIN_12 的一些更改，我明白了

paulf> ./vg-in-place yes
==12358== Memcheck, a memory error detector
==12358== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==12358== Using Valgrind-3.18.0.GIT-lbmacos and LibVEX; rerun with -h for copyright info
==12358== Command: yes
==12358== 

valgrind: m_mach/dyld_cache.c:244 (int try_to_init(void)): Assertion 'dyld_cache.header->mappingCount == 3' failed.