in reply to Re^5: Segmentation Fault when using LWP::UserAgent
in thread Segmentation Fault when using LWP::UserAgent

Hi and Thanks a lot for your help.

After some thinking about your last comment I found that I totally forgot the existence of Dr. Watson. Dr. Watson is also active on my PC and the Log file was quite informative. It seems to be that the problem has to do with my antivirus program. This is (a part of) what Dr Watson found out: 

*** ERROR: Module load completed but symbols could not be loaded for C
+:\strawberry\perl\bin\perl.exe
Funktion: <nosymbols>
No prior disassembly possible
        :
        00000000 ??               ???
        00000002 ??               ???
        00000004 ??               ???
        00000006 ??               ???
        00000008 ??               ???
        0000000a ??               ???
        0000000c ??               ???
        0000000e ??               ???
FEHLER ->:
00000000 ??               ???
Error 0x00000001
        00000002 ??               ???
        00000004 ??               ???
        00000006 ??               ???
        00000008 ??               ???
        0000000a ??               ???
        0000000c ??               ???
        0000000e ??               ???
        00000010 ??               ???
        00000012 ??               ???
        00000014 ??               ???

*----> Stack Back Trace <----*
*** ERROR: Symbol file could not be found.  Defaulted to export symbol
+s for C:\Programme\F-Secure Internet Security\FSPS\program\FSLSP.DLL 
+- 
WARNING: Stack unwind information not available. Following frames may 
+be wrong.
*** ERROR: Symbol file could not be found.  Defaulted to export symbol
+s for C:\WINDOWS\system32\WS2_32.DLL - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbol
+s for C:\strawberry\perl\bin\perl510.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbol
+s for C:\WINDOWS\system32\kernel32.dll - 
ChildEBP RetAddr  Args to Child              
0023f828 170ed02c 000007b8 0023f854 009797a8 0x0
0023f83c 71a13e72 000007b8 0023f854 00c9a764 FSLSP!GetLspGuid+0x243
0023f858 6a7840bb 000007b8 00000003 00000000 WS2_32!closesocket+0x47
0023f878 6a777f20 00000003 00000003 00000000 perl510!win32_socket+0xdb
0023f898 6a776750 00033fc4 00c9a764 000329f8 perl510!PerlIO_teardown+0
+x470
0023f8b8 6a779291 00033fc4 009c468c 6a7a78aa perl510!PerlIOBase_close+
+0x90
0023f8d8 6a7767d1 00033fc4 009c468c 0023f918 perl510!PerlIOBuf_close+0
+x21
0023f8f8 6a68554e 00033fc4 009c468c 01d4b474 perl510!Perl_PerlIO_close
++0x21
0023f918 6a7332e4 00033fc4 00d1002c 00000000 perl510!Perl_do_openn+0x1
+89e
0023f958 6a73349a 00033fc4 00d1002c 00000000 perl510!Perl_sv_clear+0x8
+24
0023f978 6a695bd4 00033fc4 00d1002c 0023f9b8 perl510!Perl_sv_free2+0x4
+a
0023f9b8 6a733151 00033fc4 00d0ffdc 00000042 perl510!Perl_gp_free+0x20
+4
0023f9f8 6a73349a 00033fc4 00d0ffdc 00000001 perl510!Perl_sv_clear+0x6
+91
0023fa18 6a72c138 00033fc4 00d0ffdc 00000001 perl510!Perl_sv_free2+0x4
+a
0023fa68 6a72c20c 00033fc4 0000005d 0023faa8 perl510!Perl_leave_scope+
+0x12b8
0023fa78 6a6ed8c0 00033fc4 00d5e47c 0023faa8 perl510!Perl_pop_scope+0x
+2c
0023faa8 6a729a89 00033fc4 00033fc4 0023fb38 perl510!Perl_sv_compile_2
+op+0xbd00
0023fab8 6a6c2754 00033fc4 00000007 00000001 perl510!Perl_runops_stand
+ard+0x19
0023fb38 6a774a88 00033fc4 6a76e450 00000002 perl510!perl_run+0x2a4
0023ff48 00401322 00000002 00033f68 00032c98 perl510!RunPerl+0x188
0023ff78 0040124b 00000002 00033f68 00032c98 perl+0x1322
0023ffb0 00401298 00000001 00000009 0023fff0 perl+0x124b
0023ffc0 7c817077 00000010 00000000 7ffd5000 perl+0x1298
0023fff0 00000000 00401280 00000000 78746341 kernel32!RegisterWaitForI
+nputIdle+0x49

*----> Raw Stack Dump <----*
000000000023f82c  2c d0 0e 17 b8 07 00 00 - 54 f8 23 00 a8 97 97 00  ,
+.......T.#.....
000000000023f83c  58 f8 23 00 72 3e a1 71 - b8 07 00 00 54 f8 23 00  X
+.#.r>.q....T.#.
000000000023f84c  64 a7 c9 00 03 00 00 00 - 00 00 00 00 78 f8 23 00  d
+...........x.#.
000000000023f85c  bb 40 78 6a b8 07 00 00 - 03 00 00 00 00 00 00 00  .
+@xj............
000000000023f86c  00 00 00 00 c4 3f 03 00 - 03 00 00 00 98 f8 23 00  .
+....?........#.
000000000023f87c  20 7f 77 6a 03 00 00 00 - 03 00 00 00 00 00 00 00   
+.wj............
000000000023f88c  64 a7 c9 00 8c 46 9c 00 - 00 00 00 00 b8 f8 23 00  d
+....F........#.
000000000023f89c  50 67 77 6a c4 3f 03 00 - 64 a7 c9 00 f8 29 03 00  P
+gwj.?..d....)..
000000000023f8ac  8c 46 9c 00 8c 46 9c 00 - c4 3f 03 00 d8 f8 23 00  .
+F...F...?....#.
000000000023f8bc  91 92 77 6a c4 3f 03 00 - 8c 46 9c 00 aa 78 7a 6a  .
+.wj.?...F...xzj
000000000023f8cc  8c 46 9c 00 c4 3f 03 00 - c4 3f 03 00 f8 f8 23 00  .
+F...?...?....#.
000000000023f8dc  d1 67 77 6a c4 3f 03 00 - 8c 46 9c 00 18 f9 23 00  .
+gwj.?...F....#.
000000000023f8ec  00 00 00 00 2c 00 d1 00 - c4 3f 03 00 18 f9 23 00  .
+...,....?....#.
000000000023f8fc  4e 55 68 6a c4 3f 03 00 - 8c 46 9c 00 74 b4 d4 01  N
+Uhj.?...F..t...
000000000023f90c  ec c0 9c 00 58 da 04 01 - c4 3f 03 00 58 f9 23 00  .
+...X....?..X.#.
000000000023f91c  e4 32 73 6a c4 3f 03 00 - 2c 00 d1 00 00 00 00 00  .
+2sj.?..,.......
000000000023f92c  a0 e7 76 6a 00 00 00 00 - a4 6e d4 00 24 9b ad 00  .
+.vj.....n..$...
000000000023f93c  2c e3 a9 00 e8 28 7a 6a - 0f 00 00 00 2c 00 d1 00  ,
+....(zj....,...
000000000023f94c  2c 00 d1 00 c4 3f 03 00 - c4 3f 03 00 78 f9 23 00  ,
+....?...?..x.#.
000000000023f95c  9a 34 73 6a c4 3f 03 00 - 2c 00 d1 00 00 00 00 00  .
+4sj.?..,.......

*----> Statusabbild für Threadkennung 0xe58 <----*

eax=719bd2c6 ebx=c0000000 ecx=7c922d78 edx=ffffffff esi=00000000 edi=7
+19e793c
eip=7c91e514 esp=015cff7c ebp=015cffb4 iopl=0         nv up ei pl nz n
+a po nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=0
+0000206

*** ERROR: Symbol file could not be found.  Defaulted to export symbol
+s for C:\WINDOWS\system32\ntdll.dll - 
Funktion: ntdll!KiFastSystemCallRet
        7c91e4fa e829000000       call    ntdll!RtlRaiseException (7c9
+1e528)
        7c91e4ff 8b0424           mov     eax,[esp]
        7c91e502 8be5             mov     esp,ebp
        7c91e504 5d               pop     ebp
        7c91e505 c3               ret
        7c91e506 8da42400000000   lea     esp,[esp]
        7c91e50d 8d4900           lea     ecx,[ecx]
        ntdll!KiFastSystemCall:
        7c91e510 8bd4             mov     edx,esp
        7c91e512 0f34             sysenter
        ntdll!KiFastSystemCallRet:
        7c91e514 c3               ret
        7c91e515 8da42400000000   lea     esp,[esp]
        7c91e51c 8d642400         lea     esp,[esp]
        ntdll!KiIntSystemCall:
        7c91e520 8d542408         lea     edx,[esp+0x8]
        7c91e524 cd2e             int     2e
        7c91e526 c3               ret
        7c91e527 90               nop
        ntdll!RtlRaiseException:
        7c91e528 55               push    ebp
        7c91e529 8bec             mov     ebp,esp

*----> Stack Back Trace <----*
WARNING: Stack unwind information not available. Following frames may 
+be wrong.
ChildEBP RetAddr  Args to Child              
015cffb4 7c80b729 719bd65f 0023f6b4 7c91e920 ntdll!KiFastSystemCallRet
015cffec 00000000 719bd2c6 00259e40 00000000 kernel32!GetModuleFileNam
+eA+0x1ba

*----> Raw Stack Dump <----*
00000000015cff7c  4a da 91 7c 20 d3 9b 71 - 74 07 00 00 bc ff 5c 01  J
+..| ..qt.....\.
00000000015cff8c  b0 ff 5c 01 a4 ff 5c 01 - 68 d3 9b 71 b4 f6 23 00  .
+.\...\.h..q..#.
00000000015cff9c  20 e9 91 7c 40 9e 25 00 - 00 00 00 00 00 00 00 00   
+..|@.%.........
00000000015cffac  00 00 9b 71 58 25 36 01 - ec ff 5c 01 29 b7 80 7c  .
+..qX%6...\.)..|
00000000015cffbc  5f d6 9b 71 b4 f6 23 00 - 20 e9 91 7c 40 9e 25 00  _
+..q..#. ..|@.%.
00000000015cffcc  00 e0 fd 7f 00 c6 74 8a - c0 ff 5c 01 18 63 e8 87  .
+.....t...\..c..
00000000015cffdc  ff ff ff ff d8 9a 83 7c - 30 b7 80 7c 00 00 00 00  .
+......|0..|....
00000000015cffec  00 00 00 00 00 00 00 00 - c6 d2 9b 71 40 9e 25 00  .
+..........q@.%.
00000000015cfffc  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d000c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d001c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d002c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d003c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d004c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d005c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d006c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d007c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d008c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d009c  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............
00000000015d00ac  00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00  .
+...............

[download]
It is not totally clear to me what kind of symbol files are missing and where they had vanished.

Regarding your suggestion to reinstall Perl (ActiveState) in a new directory: When I uninstalled and reinstalled Perl - I did it twice so far - I deleted everything (including directories and registry entries). I could definitely do it again if this helps for further analysis.

Regards

Replies are listed 'Best First'.
Re^7: Segmentation Fault when using LWP::UserAgent
by BrowserUk (Patriarch) on May 29, 2010 at 00:30 UTC
    It is not totally clear to me what kind of symbol files are missing and where they had vanished.

    You would only have the symbol files for Perl if your copy of perl was built in such a way to produce them, which it isn't. And you have to install an SDK to get symbol files for Windows. In truth the almost certainly wouldn't help you even if you had them.

    Have you tried temporarially disabling F-Secure? My bet is that it is the cause here. If so, you'll need to either: download a newer version of it; or report it and wait for them to fix it; or use some other. I've been very happy with Comodo.

    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]

      Yes, I had disabled F-Secure and also removed all running processes belongig to it - but not during installation. According to the log-files F-Secure had not deleted any files or put them under quarantine.

      But I will do as you suggested and disable, remove or replace F-Secure. I will let you know the outcome.

      Thank you so far and best regards.
[reply]
        Yes, I had disabled F-Secure and also removed all running processes belongig to it

        Hm. It's just that the stack trace you posted clearly identifies dll;c:\Programme\F-Secure Internet Security\FSPS\program\FSLSP.DLL; entrypoint FSLSP!GetLspGuid as the source of the segfault.

        Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
        "Science is about questioning the status quo. Questioning authority".
        In the absence of evidence, opinion is indistinguishable from prejudice.
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