Re: 用gflag同时打开ust和hpa后为什么stack trace不起作用了？？

Windows内核调试

用gflag同时打开ust和hpa后为什么stack trace不起作用了？？

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Coding 2009-11-18, 11:41 上午

WinXP SP3

如果同时用gflag.exe打开 +ust +hpa的话

ust - Create user mode stack trace database
hpa - Enable page heap

我发现好像ust没有用处，无法用!heap -p -a得到stack trace了

0:000> !gflag
Current NtGlobalFlag contents: 0x02000000
    hpa - Place heap allocations at ends of pages
0:000> !heap -p -a 0x01638fd0
ReadMemory error for address eeddccee
Use `!address eeddccee' to check validity of the address.

如果只是用ust的话，可以得到stack trace

0:000> !gflag
Current NtGlobalFlag contents: 0x00001040
    hpc - Enable heap parameter checking
    ust - Create user mode stack trace database

0:000> !heap -p -a 0x00344f58
    address 00344f58 found in
    _HEAP @ 340000
      HEAP_ENTRY Size Prev Flags    UserPtr UserSize - state
        00344f30 000d 0000  [07]   00344f38    0004c - (busy)
        Trace: 0026
        7c96eed2 ntdll!RtlDebugAllocateHeap+0x000000e1
        7c94b394 ntdll!RtlAllocateHeapSlowly+0x00000044
        7c918f21 ntdll!RtlAllocateHeap+0x00000e64
        102c163e MSVCR90D!malloc_base+0x000000ee
        102d0336 MSVCR90D!malloc_dbg+0x00000306
        102d00ef MSVCR90D!malloc_dbg+0x000000bf
        102d009c MSVCR90D!malloc_dbg+0x0000006c
        102db7bb MSVCR90D!malloc+0x0000001b
        102bdc91 MSVCR90D!operator new+0x00000011
        411aac HeapExample!fuc1+0x0000002c
        411443 HeapExample!wmain+0x00000023
        4119d8 HeapExample!__tmainCRTStartup+0x000001a8
        41181f HeapExample!wmainCRTStartup+0x0000000f
        7c817077 kernel32!BaseProcessStart+0x00000023

Re: 用gflag同时打开ust和hpa后为什么stack trace不起作用了？？

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Coding 2009-11-18, 11:58 上午
直接也发现了错误，这可能是什么问题？还有其他的flags需要开吗？
ReadMemory error for address eeddccee
Use `!address eeddccee' to check validity of the address.

0:000> !heap -p

Active GlobalFlag bits:
hpa - Place heap allocations at ends of pages

StackTraceDataBase @ 00420000 of size 01000000 with 00000024 traces

PageHeap enabled with options:
ENABLE_PAGE_HEAP
COLLECT_STACK_TRACES

active heaps:

+ 150000
ENABLE_PAGE_HEAP COLLECT_STACK_TRACES
NormalHeap - 250000
HEAP_GROWABLE
ReadMemory error for address eeddccee
Use `!address eeddccee' to check validity of the address.

Re: 用gflag同时打开ust和hpa后为什么stack trace不起作用了？？

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格蠹老雷 2009-11-18, 12:54 下午
可能是!heap命令的问题，这个命令太复杂了，bug也比较多，建议使用UMDH（《软件调试》23.7.2和23.7.3）

Re: 用gflag同时打开ust和hpa后为什么stack trace不起作用了？？

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Coding 2009-11-18, 13:26 下午
您老太明智了，换到Windbg 6.8就好了
用Windbg 6.11就有问题。