RE: snmpd under cygwin gdb.
Why does the error message, announcing the segmentation fault, look as if it comes from the DLL (kernel32.dll), and not from snmpd? Could it be that the segmentation fault owes its observation to a failure of MS programmers to handle a GPF? MS code is well know to be full of bugs, so perhaps the problem is not with gdb, or snmpd, or cygwin. I suppose I could be wrong but, on the face of it, the reported error suggests (to me) that the problem is with MS code. William R. Buckley -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of kumaresh malli Sent: Thursday, July 29, 2004 4:05 PM To: [EMAIL PROTECTED] Subject: snmpd under cygwin gdb. Hi All, I am getting this segmentation fault error while trying to run snmpd under cygwin gdb. Any suggestions or ideas? Thanks for your help in advance. Kmesh bash-2.05b$ cd bash-2.05b$ gdb GNU gdb 2003-09-20-cvs (cygwin-special) Copyright 2003 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type show copying to see the conditions. There is absolutely no warranty for GDB. Type show warranty for details. This GDB was configured as i686-pc-cygwin. (gdb) file /usr/local/sbin/snmpd Reading symbols from /usr/local/sbin/snmpd...done. (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ Net-snmp-users mailing list [EMAIL PROTECTED] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ Net-snmp-users mailing list [EMAIL PROTECTED] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: snmpd under cygwin gdb.
I am getting this segmentation fault error while trying to run snmpd under cygwin gdb. Any suggestions or ideas? This *might* be a bug in the Windows library, as William suggests. But it might also be a result of a failure in higher level code. I'd suggest that before trying to point the finger as MS code, it would be worth looking a little more closely at exactly *where* the agent is failing, and hopefully *why*. (gdb) file /usr/local/sbin/snmpd Reading symbols from /usr/local/sbin/snmpd...done. (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) Try (gdb) bt to display the stack trace of the agent at this point. Then use up to go back up the stack, until you get to Net-SNMP code. What was the call that triggered the crash, and what were the parameter values? Dave --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ Net-snmp-users mailing list [EMAIL PROTECTED] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: snmpd under cygwin gdb.
Hi Dave, William, Here is some more details regarding the environment and back trace information. Still the segmentation fault points to kernel32.dll. Environment details: Host Platform: Microsoft Windows XP professional version 2002 Service Pack 1 Cygwin Version : 2.427 Net-Snmp Version: 5.1.1 GDB Version: GNU gdb 2003-09-20-cvs (cygwin-special) bash-2.05b$ gdb snmpd.exe GNU gdb 2003-09-20-cvs (cygwin-special) Copyright 2003 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type show copying to see the conditions. There is absolutely no warranty for GDB. Type show warranty for details. This GDB was configured as i686-pc-cygwin... (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) bt #0 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll #1 0x0013 in ?? () #2 0x0022eb44 in ?? () #3 0x0012 in ?? () #4 0x0022e000 in ?? () #5 0x0022e000 in ?? () #6 0x0022d4fc in ?? () #7 0x0008 in ?? () #8 0x0022f090 in ?? () #9 0x77e94809 in SetThreadExecutionState () from /cygdrive/c/WINDOWS/system32/kernel32.dll #10 0x610a92ed in cygwin1!__getreent () from /usr/bin/cygwin1.dll #11 0x0008 in ?? () #12 0x0022d558 in ?? () #13 0x610a9387 in cygwin1!__getreent () from /usr/bin/cygwin1.dll #14 0x0a0521b0 in ?? () #15 0x0022d568 in ?? () #16 0x0022eb44 in ?? () (gdb) Thanks Kumaresh Malli On Fri, 30 Jul 2004 09:37:00 +0100, Dave Shield [EMAIL PROTECTED] wrote: I am getting this segmentation fault error while trying to run snmpd under cygwin gdb. Any suggestions or ideas? This *might* be a bug in the Windows library, as William suggests. But it might also be a result of a failure in higher level code. I'd suggest that before trying to point the finger as MS code, it would be worth looking a little more closely at exactly *where* the agent is failing, and hopefully *why*. (gdb) file /usr/local/sbin/snmpd Reading symbols from /usr/local/sbin/snmpd...done. (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) Try (gdb) bt to display the stack trace of the agent at this point. Then use up to go back up the stack, until you get to Net-SNMP code. What was the call that triggered the crash, and what were the parameter values? Dave --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ Net-snmp-users mailing list [EMAIL PROTECTED] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: snmpd under cygwin gdb.
I just thought of adding this details too. I have not made any changes to net-snmp code. Planning to extend MIB module using C code. But right now, Just trying to set up development environment under cygwin. Downloaded net-snmp, compiled and able to run successfully as a stand alone program but fails to run under cygwin gdb. Thanks Kumaresh Malli On Fri, 30 Jul 2004 09:13:19 -0400, kumaresh malli [EMAIL PROTECTED] wrote: Hi Dave, William, Here is some more details regarding the environment and back trace information. Still the segmentation fault points to kernel32.dll. Environment details: Host Platform: Microsoft Windows XP professional version 2002 Service Pack 1 Cygwin Version : 2.427 Net-Snmp Version: 5.1.1 GDB Version: GNU gdb 2003-09-20-cvs (cygwin-special) bash-2.05b$ gdb snmpd.exe GNU gdb 2003-09-20-cvs (cygwin-special) Copyright 2003 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type show copying to see the conditions. There is absolutely no warranty for GDB. Type show warranty for details. This GDB was configured as i686-pc-cygwin... (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) bt #0 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll #1 0x0013 in ?? () #2 0x0022eb44 in ?? () #3 0x0012 in ?? () #4 0x0022e000 in ?? () #5 0x0022e000 in ?? () #6 0x0022d4fc in ?? () #7 0x0008 in ?? () #8 0x0022f090 in ?? () #9 0x77e94809 in SetThreadExecutionState () from /cygdrive/c/WINDOWS/system32/kernel32.dll #10 0x610a92ed in cygwin1!__getreent () from /usr/bin/cygwin1.dll #11 0x0008 in ?? () #12 0x0022d558 in ?? () #13 0x610a9387 in cygwin1!__getreent () from /usr/bin/cygwin1.dll #14 0x0a0521b0 in ?? () #15 0x0022d568 in ?? () #16 0x0022eb44 in ?? () (gdb) Thanks Kumaresh Malli On Fri, 30 Jul 2004 09:37:00 +0100, Dave Shield [EMAIL PROTECTED] wrote: I am getting this segmentation fault error while trying to run snmpd under cygwin gdb. Any suggestions or ideas? This *might* be a bug in the Windows library, as William suggests. But it might also be a result of a failure in higher level code. I'd suggest that before trying to point the finger as MS code, it would be worth looking a little more closely at exactly *where* the agent is failing, and hopefully *why*. (gdb) file /usr/local/sbin/snmpd Reading symbols from /usr/local/sbin/snmpd...done. (gdb) run -f -L Starting program: /usr/local/sbin/snmpd.exe -f -L Program received signal SIGSEGV, Segmentation fault. 0x77e75a3d in KERNEL32!IsBadWritePtr () from /cygdrive/c/WINDOWS/system32/kernel32.dll (gdb) Try (gdb) bt to display the stack trace of the agent at this point. Then use up to go back up the stack, until you get to Net-SNMP code. What was the call that triggered the crash, and what were the parameter values? Dave --- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com ___ Net-snmp-users mailing list [EMAIL PROTECTED] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
