Uninit to be investigated from running Win8 32-bit calc with Dr.Memory

[derekbruening]

From zhao...@google.com on April 04, 2014 18:06:08

C:\Workspace\DrMemory-Windows-1.7.0-4\DrMemory-Windows-1.7.0-4>.\bin\drmemory.exe -- calc
Dr.M
Dr.M ERRORS FOUND:
Dr.M 0 unique, 0 total unaddressable access(es)
Dr.M 4 unique, 4 total uninitialized access(es)
Dr.M 0 unique, 0 total invalid heap argument(s)
Dr.M 0 unique, 0 total GDI usage error(s)
Dr.M 0 unique, 0 total handle leak(s)
Dr.M 0 unique, 0 total warning(s)
Dr.M 62 unique, 62 total, 5100 byte(s) of leak(s)
Dr.M 1 unique, 1 total, 160 byte(s) of possible leak(s)

Error #1: UNINITIALIZED READ: reading register eax
#0 calc.exe!? +0x0 (0x012f0b66 <calc.exe+0x30b66>)
#1 calc.exe!? +0x0 (0x012f9c97 <calc.exe+0x39c97>)
#2 calc.exe!? +0x0 (0x012f9c16 <calc.exe+0x39c16>)
#3 calc.exe!? +0x0 (0x012e68a2 <calc.exe+0x268a2>)
#4 calc.exe!? +0x0 (0x012c185b <calc.exe+0x185b>)
#5 calc.exe!? +0x0 (0x012f345f <calc.exe+0x3345f>)
#6 KERNEL32.dll!BaseThreadInitThunk +0x11 (0x772a1866 <KERNEL32.dll+0x1866>)
Note: @0:00:04.711 in thread 3604
Note: instruction: cmp %eax $0x00000002

Error #2: UNINITIALIZED READ: reading register eax
#0 calc.exe!? +0x0 (0x012d4cee <calc.exe+0x14cee>)
#1 calc.exe!? +0x0 (0x012d4897 <calc.exe+0x14897>)
#2 calc.exe!? +0x0 (0x012d446b <calc.exe+0x1446b>)
#3 calc.exe!? +0x0 (0x012d2528 <calc.exe+0x12528>)
#4 calc.exe!? +0x0 (0x012d41df <calc.exe+0x141df>)
#5 calc.exe!? +0x0 (0x012d5b06 <calc.exe+0x15b06>)
#6 calc.exe!? +0x0 (0x012d396e <calc.exe+0x1396e>)
#7 calc.exe!? +0x0 (0x012d1f46 <calc.exe+0x11f46>)
#8 calc.exe!? +0x0 (0x012f9c3a <calc.exe+0x39c3a>)
#9 calc.exe!? +0x0 (0x012e68a2 <calc.exe+0x268a2>)
#10 calc.exe!? +0x0 (0x012c185b <calc.exe+0x185b>)
#11 calc.exe!? +0x0 (0x012f345f <calc.exe+0x3345f>)
Note: @0:00:04.820 in thread 3604
Note: instruction: test %eax %eax

Error #3: UNINITIALIZED READ: reading 0x004fdd74-0x004fdd78 4 byte(s) within 0x004fdd74-0x004fdd78
#0 system call NtUserGetObjectInformation parameter #4
#1 USER32.dll!GetUserObjectInformationW +0x9 (0x75c8eea7 <USER32.dll+0xeea7>)
#2 calc.exe!? +0x0 (0x012c1fb8 <calc.exe+0x1fb8>)
#3 calc.exe!? +0x0 (0x012f345f <calc.exe+0x3345f>)
#4 KERNEL32.dll!BaseThreadInitThunk +0x11 (0x772a1866 <KERNEL32.dll+0x1866>)
Note: @0:00:06.501 in thread 3604

Error #4: UNINITIALIZED READ: reading 0x004fdd5c-0x004fdd60 4 byte(s) within 0x004fdd5c-0x004fdd60
#0 system call NtUserGetObjectInformation parameter #4
#1 USER32.dll!GetUserObjectInformationW +0x9 (0x75c8eea7 <USER32.dll+0xeea7>)
#2 calc.exe!? +0x0 (0x012c2005 <calc.exe+0x2005>)
#3 calc.exe!? +0x0 (0x012f345f <calc.exe+0x3345f>)
#4 KERNEL32.dll!BaseThreadInitThunk +0x11 (0x772a1866 <KERNEL32.dll+0x1866>)
Note: @0:00:06.517 in thread 3604

Original issue: http://code.google.com/p/drmemory/issues/detail?id=1508

[derekbruening]

From bruen...@google.com on April 04, 2014 15:08:30

xref issue #1246

Labels: Component-FullMode Bug-FalsePositive

[derekbruening]

From bruen...@google.com on April 04, 2014 18:32:26

On Vista I see:

Potential Error #1: UNINITIALIZED READ: reading 0x000df2c8-0x000df2cc 4 byte(s) within 0x000df2c8-0x000df2cc

0 system call NtUserGetObjectInformation parameter #4

1 MSCTF.dll!CtfImeDispatchDefImeMessage +0xf3a (0x766a3bb7 <MSCTF.dll+0x3bb7>)

2 MSCTF.dll!CtfImeDispatchDefImeMessage +0xfa0 (0x766a3c1d <MSCTF.dll+0x3c1d>)

3 MSCTF.dll!CtfImeDispatchDefImeMessage +0x10cd (0x766a3d4a <MSCTF.dll+0x3d4a>)

4 MSCTF.dll!CtfImeDispatchDefImeMessage +0x1016 (0x766a3c93 <MSCTF.dll+0x3c93>)

5 MSCTF.dll!TF_Notify +0x41 (0x766a23f8 <MSCTF.dll+0x23f8>)

6 USER32.dll!GetMenuStringW +0x5d6 (0x765452d1 <USER32.dll+0x552d1>)

7 USER32.dll!CallNextHookEx +0xcc (0x76507c70 <USER32.dll+0x17c70>)

8 USER32.dll!GetFocus +0xe1 (0x76507f4d <USER32.dll+0x17f4d>)

9 ntdll.dll!KiUserCallbackDispatcher +0x2d (0x76fde3d6 <ntdll.dll+0x1e3d6>)

#10 calc.exe!? +0x0 (0x002c23bd <calc.exe+0x23bd>)
#11 calc.exe!? +0x0 (0x002d2588 <calc.exe+0x12588>)
Note: @0:00:00.907 in thread 3820