derekbruening
commented
9 years ago From timurrrr@google.com on July 27, 2011 07:06:42
FTR, Repro written during investigation of these two Chromium reports: http://build.chromium.org/p/chromium.fyi/builders/Windows%20Tests%20%28DrMemory%29/builds/4637/steps/memory%20test%3A%20unit/logs/stdio UNINITIALIZED READ: reading 0x4d64ee24-0x4d64ee28 4 byte(s)
1 std::basic_string<char,std::char_traits,std::allocator >::assign c:\program files\microsoft visual studio 9.0\vc\include\xstring:1067
2 Encryptor::EncryptString chrome\browser\password_manager\encryptor_win.cc:43
3 browser_sync::Cryptographer::PackBootstrapToken chrome\browser\sync\util\cryptographer.cc:203
4 browser_sync::Cryptographer::GetBootstrapToken chrome\browser\sync\util\cryptographer.cc:180
5 sync_api::SyncManager::SyncInternal::SetPassphrase chrome\browser\sync\engine\syncapi.cc:2043
6 sync_api::SyncManager::SetPassphrase chrome\browser\sync\engine\syncapi.cc:1690
UNINITIALIZED READ: reading register eax
From timurrrr@google.com on July 27, 2011 10:04:48
include
include
pragma comment(lib, "crypt32.lib")
include
int main() { DATA_BLOB input; std::string message = "0123456789ABCDEF"; // must be at least 16 chars in length to force the string growth. input.pbData = (BYTE*)message.data(); input.cbData = (DWORD)message.length();
DATA_BLOB output; BOOL result = CryptProtectData(&input, L"", NULL, NULL, NULL, 0, &output);
std::string encrypted; encrypted.assign((char*)output.pbData, output.cbData); return 0; }
Reports on XP 32-bits: Error,std::allocator >::_Grow
c:\program files\microsoft visual studio 9.0\vc\include\xstring:2120
0x004013b8 <test.exe+0x13b8> test.exe!std::basic_string<char,std::char_traits,std::allocator >::assign
c:\program files\microsoft visual studio 9.0\vc\include\xstring:1074
0x00401209 <test.exe+0x1209> test.exe!main
test.cpp:17
#1: UNINITIALIZED READ: reading 0x0012ff08-0x0012ff0c 4 byte(s) @0:00:01.922 in thread 3060 0x00401661 <test.exe+0x1661> test.exe!std::basic_string<char,std::char_traitsError::_Copy_s
c:\program files\microsoft visual studio 9.0\vc\include\iosfwd:465
0x00401e38 <test.exe+0x1e38> test.exe!std::_Traits_helper::copy_sstd::char_traits
c:\program files\microsoft visual studio 9.0\vc\include\iosfwd:597
0x00401c86 <test.exe+0x1c86> test.exe!std::_Traits_helper::copy_sstd::char_traits
c:\program files\microsoft visual studio 9.0\vc\include\iosfwd:589
0x004013dc <test.exe+0x13dc> test.exe!std::basic_string<char,std::char_traits,std::allocator >::assign
c:\program files\microsoft visual studio 9.0\vc\include\xstring:1076
0x00401209 <test.exe+0x1209> test.exe!main
test.cpp:17
#2: UNINITIALIZED READ: reading register esi @0:00:01.938 in thread 3060 0x00402cbc <test.exe+0x2cbc> test.exe!memcpy_s f:\dd\vctools\crt_bld\self_x86\crt\src\memcpy_s.c:48 0x00401e68 <test.exe+0x1e68> test.exe!std::char_traitsError::assign
c:\program files\microsoft visual studio 9.0\vc\include\iosfwd:425
0x0040160b <test.exe+0x160b> test.exe!std::basic_string<char,std::char_traits,std::allocator >::_Eos
c:\program files\microsoft visual studio 9.0\vc\include\xstring:2114
0x004013eb <test.exe+0x13eb> test.exe!std::basic_string<char,std::char_traits,std::allocator >::assign
c:\program files\microsoft visual studio 9.0\vc\include\xstring:1077
0x00401209 <test.exe+0x1209> test.exe!main
test.cpp:17
#3: UNINITIALIZED READ: reading register eax @0:00:01.938 in thread 3060 0x0040163b <test.exe+0x163b> test.exe!std::char_traitsOriginal issue: http://code.google.com/p/drmemory/issues/detail?id=512