链接ArmPL与Pthread时Valgrind出现readdwarf.c断言失败求助

问题现象 #

在Nvidia Jetson平台使用Valgrind调试程序，只要同时链接ArmPL（Arm性能库）和Pthread库，程序启动就会触发断言失败。单独链接其中任意一个库则无异常。

最小复现代码 #

#include <iostream>

int main(int argc, char *argv[]) 
{
   std::cout << "Hello, world!" << std::endl;
}

编译命令 #

g++ -g -O0 main.cpp -L/mnt/data/opt/lib -larmpl -lpthread

运行命令 #

valgrind ./a.out

错误输出 #

==8903== Memcheck, a memory error detector
==8903== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==8903== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==8903== Command: ./a.out
==8903== 
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11
--8903-- Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x11

valgrind: m_debuginfo/readdwarf.c:2396 (copy_convert_CfiExpr_tree): Assertion 'srcix >= 0 && srcix < VG_(sizeXA)(srcxa)' failed.

host stacktrace:
==8903==    at 0x5803DBA0: ??? (in /usr/lib/valgrind/memcheck-arm64-linux)

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable (lwpid 8903)
==8903==    at 0x4016D44: mmap (mmap64.c:59)
==8903==    by 0x4005627: _dl_map_segments (dl-map-segments.h:94)
==8903==    by 0x4005627: _dl_map_object_from_fd (dl-load.c:1181)
==8903==    by 0x4007C5F: _dl_map_object (dl-load.c:2460)
==8903==    by 0x400BCE7: openaux (dl-deps.c:63)
==8903==    by 0x4015A53: _dl_catch_exception (dl-error-skeleton.c:196)
==8903==    by 0x400C057: _dl_map_object_deps (dl-deps.c:249)
==8903==    by 0x40037EF: dl_main (rtld.c:1726)
==8903==    by 0x4014D6F: _dl_sysdep_start (dl-sysdep.c:253)
==8903==    by 0x40018C3: _dl_start_final (rtld.c:414)
==8903==    by 0x4001B47: _dl_start (rtld.c:523)
==8903==    by 0x40011C7: ??? (in /lib/aarch64-linux-gnu/ld-2.27.so)


Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.

If that doesn't help, please report this bug to: www.valgrind.org

In the bug report, send all the above text, the valgrind
version, and what OS and version you are using.  Thanks.

系统环境 #

Nvidia Jetson AGX Xavier
Ubuntu 18.04
gcc version 7.5.0
valgrind version 3.13.0
ArmPL version 21.1_Ubuntu-18.04_gcc-7.5

可行的排查与解决方向 #

• 升级Valgrind版本：当前使用的3.13.0版本较旧，后续版本大概率修复了DWARF2调试信息解析的兼容问题，建议升级到最新稳定版。
• 调整链接顺序：交换-larmpl和-lpthread的位置，改为g++ -g -O0 main.cpp -L/mnt/data/opt/lib -lpthread -larmpl，链接顺序会影响库依赖的解析逻辑。
• 去除ArmPL的调试符号：用strip工具清理ArmPL库的调试信息，命令示例：strip /mnt/data/opt/lib/libarmpl.so，再重新编译链接。
• 跳过有问题的调试信息解析：启动Valgrind时添加--debuginfo=0参数，强制跳过调试信息解析，但会影响调试时的符号显示。

内容的提问来源于stack exchange，提问作者Wolfy