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Linux: Skip sections of type SHT_NOBITS when loading symbols.

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Review URL: http://breakpad.appspot.com/120001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@620 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
thestig@chromium.org 2010-07-06 05:11:50 +00:00
parent e193098543
commit 7fbd77715f
1 changed files with 10 additions and 3 deletions
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13
src/common/linux/dump_symbols.cc
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@ -111,15 +111,22 @@ static const ElfW(Shdr) *FindSectionByName(const char *name,
// Find the end of the section name section, to make sure that // Find the end of the section name section, to make sure that
// comparisons don't run off the end of the section. // comparisons don't run off the end of the section.
const char *names_end = const char *names_end =
reinterpret_cast<char*>(section_names->sh_offset + section_names->sh_size); reinterpret_cast<char*>(section_names->sh_offset + section_names->sh_size);
for (int i = 0; i < nsection; ++i) { for (int i = 0; i < nsection; ++i) {
const char *section_name = const char *section_name =
reinterpret_cast<char*>(section_names->sh_offset + sections[i].sh_name); reinterpret_cast<char*>(section_names->sh_offset + sections[i].sh_name);
if (names_end - section_name >= name_len + 1 && if (names_end - section_name >= name_len + 1 &&
strcmp(name, section_name) == 0) strcmp(name, section_name) == 0) {
if (sections[i].sh_type == SHT_NOBITS) {
fprintf(stderr,
"Section %s found, but ignored because type=SHT_NOBITS.\n",
name);
return NULL;
}
return sections + i; return sections + i;
}
} }
return NULL; return NULL;
} }
@ -313,7 +320,7 @@ static bool LoadDwarfCFI(const string &dwarf_filename,
byte_reader.SetDataBase(got_section->sh_addr); byte_reader.SetDataBase(got_section->sh_addr);
if (text_section) if (text_section)
byte_reader.SetTextBase(text_section->sh_addr); byte_reader.SetTextBase(text_section->sh_addr);
dwarf2reader::CallFrameInfo::Reporter dwarf_reporter(dwarf_filename, dwarf2reader::CallFrameInfo::Reporter dwarf_reporter(dwarf_filename,
section_name); section_name);
dwarf2reader::CallFrameInfo parser(cfi, cfi_size, dwarf2reader::CallFrameInfo parser(cfi, cfi_size,