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Crash on Squid when clearign cache

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Hi,
We are having squid crash a few times and creating Watson dumps when
user clears cache. We do stop the squid ( using Terminate Process),
clean the cache and restart it. This happens on field and we don't have
much info. The crash however seems to point to the squid source.. We are
using Squid version 2.5 STABLE 9. Is this a known issue on this version?
I tried searching on the release notes for this version and also on
Squid version 2.6 release notes but couldn't find any reference to this.
Can anyone please help us out on what might be the cause and help
resolve it.





Details of the crash is as below:

FAULTING_IP:
ventcsquid!ipc_thread_1+21e7 [\squid-2.5.STABLE9-NT-CVS\src\ipc.c @ 801]
0044c145 ?? ???

EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 0044c145 (ventcsquid!ipc_thread_1+0x000021e7)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 00000000
   Parameter[1]: 2af1b8a8
Attempt to read from address 2af1b8a8

PROCESS_NAME: ventcsquid.exe

ADDITIONAL_DEBUG_TEXT:
Use '!findthebuild' command to search for the target build information.
If the build information is available, run '!findthebuild -s ; .reload'
to set symbol path and load symbols.

FAULTING_MODULE: 7c900000 ntdll

DEBUG_FLR_IMAGE_TIMESTAMP: 49a64ee1

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx"
referenced memory at "0x%08lx". The memory could not be "%s".

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx"
referenced memory at "0x%08lx". The memory could not be "%s".

EXCEPTION_PARAMETER1: 00000000

EXCEPTION_PARAMETER2: 2af1b8a8

READ_ADDRESS: 2af1b8a8

FOLLOWUP_IP:
ventcsquid!ipc_thread_1+21e7
[C:\VClient_4.5.1_9thFeb\vent2\squid\client\squid-2.5.STABLE9-NT-CVS\src
\ipc.c @ 801]
0044c145 ?? ???

FAULTING_THREAD: 00001030

BUGCHECK_STR: APPLICATION_FAULT_INVALID_POINTER_READ_WRONG_SYMBOLS

PRIMARY_PROBLEM_CLASS: INVALID_POINTER_READ

DEFAULT_BUCKET_ID: INVALID_POINTER_READ

IP_ON_HEAP: 00b30650

FRAME_ONE_INVALID: 1

LAST_CONTROL_TRANSFER: from 00b30650 to 0044c145

STACK_TEXT:
00ecfbd0 00b30650 00000001 00000009 00000001
ventcsquid!ipc_thread_1+0x21e7
[C:\VClient_4.5.1_9thFeb\vent2\squid\client\squid-2.5.STABLE9-NT-CVS\src
\ipc.c @ 801]
WARNING: Frame IP not in any known module. Following frames may be
wrong.
00ecff7c 00493957 0012fd14 0000007c 00000000 0xb30650
00ecffb4 7c80b713 00b30650 0000007c 00000000
ventcsquid!_beginthreadex+0xf4
00ecffec 00000000 004938ce 00b30650 00000000
kernel32!GetModuleFileNameA+0x1b4


STACK_COMMAND: ~3s; .ecxr ; kb

FAULTING_SOURCE_CODE:
   797:
   798: cleanup:
   799: if (c2p[1] != -1)
   800: close(c2p[1]);
> 801: if (fd_table[crfd].flags.open)
   802: ipcCloseAllFD(-1, -1, crfd, cwfd);
   803: if (prfd_ipc != -1) {
   804: send(crfd_ipc, shutdown_string, strlen(shutdown_string), 0);
   805: shutdown(crfd_ipc, SD_BOTH);
   806: shutdown(prfd_ipc, SD_BOTH);


SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: ventcsquid!ipc_thread_1+21e7

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: ventcsquid

IMAGE_NAME: ventcsquid.exe

BUCKET_ID: WRONG_SYMBOLS

WATSON_IBUCKET: 360931898

WATSON_IBUCKETTABLE: 1

FAILURE_BUCKET_ID:
INVALID_POINTER_READ_c0000005_ventcsquid.exe!ipc_thread_1


Thanks
Balaji



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