nitesh.jain added a comment.
The issue was observed while parsing "vdso module" for the core file. When the
DynamicLoader::LoadModuleAtAddress is called to load "vdso" module. Since
"vdso" doesn't match with any of the module in the target.GetImages(), the
check_alternative_file_name becomes true. This cause MatchesModuleSpec to
return true and application binary to reload again at vdso base
address(AT_SYSINFO_EHDR) thus all load addresses of application elf's sections
becomes incorrect. Please find attach log file.
DynamicLoader::LoadModuleAtAddress(...)
{
...
...
...
if (check_alternative_file_name) {
...
...
...
**FileSpec(memory_info.GetName().AsCString(), false),** ** //
memory_info.GetName().AsCString() is empty here**
target.GetArchitecture());
if ((module_sp = modules.FindFirstModule(new_module_spec))) { //
FindFirstModule returns application elf's module
UpdateLoadedSections(module_sp, link_map_addr, base_addr, false); //
load addresses of application elf's sections gets updated to vdso's address
(which is incorrect)
return module_sp;
}
...
...
...
}
https://reviews.llvm.org/D30454
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