#tar -xvzf ntop-3.1.tgz

#cd ntop

#./configure (I can attach config.log if you think it will help it didn’t complain about anything other than xmldump plugin)

#make

#make install

[EMAIL PROTECTED] ~]# gdb ntop

GNU gdb Red Hat Linux (6.3.0.0-1.21rh)

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 "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) set args -u root -K

(gdb) r

Starting program: /usr/local/bin/ntop -u root -K

Reading symbols from shared object read from target memory...done.

Loaded system supplied DSO at 0xc08000

[Thread debugging using libthread_db enabled]

[New Thread -1208338752 (LWP 32287)]

Wed Aug 3 10:06:18 2005 Initializing gdbm databases

Wed Aug 3 10:06:18 2005 ntop v.3.1 MT (SSL)

Wed Aug 3 10:06:18 2005 Configured on Aug 3 2005 10:02:06, built on Aug 3 2005 10:03:25.

Wed Aug 3 10:06:18 2005 Get the freshest ntop from http://www.ntop.org/

Wed Aug 3 10:06:18 2005 Initializing ntop

Wed Aug 3 10:06:18 2005 Checking eth0 for additional devices

Wed Aug 3 10:06:18 2005 Added virtual interface: 'eth0:1'

Wed Aug 3 10:06:18 2005 Resetting traffic statistics for device eth0

Wed Aug 3 10:06:18 2005 DLT: Device 0 [eth0] is 1, mtu 1514, header 14

Program received signal SIGSEGV, Segmentation fault.

[Switching to Thread -1208338752 (LWP 32287)]

initNtop (devices=Cannot access memory at address 0x8

) at globals-core.c:602

602 if(myGlobals.runningPref.enableSessionHandling)

(gdb) list

597 */

598 if (myGlobals.capturePackets == FLAG_NTOPSTATE_RUN) {

599 initDevices(devices);

600 }

601

602 if(myGlobals.runningPref.enableSessionHandling)

603 initPassiveSessions();

604

605 /* ********************************** */

606

(gdb) frame 5

Cannot access memory at address 0x4

(gdb) bt full

#0 initNtop (devices=Cannot access memory at address 0x8

) at globals-core.c:602

value = Cannot access memory at address 0xffffffd0

(gdb)

Burton, what else would you like to see and I would be happy to try that too.

Kind Regards

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Burton Strauss
Sent: Tuesday, August 02, 2005 12:32 PM
To: [email protected]
Subject: RE: [Ntop-dev] BUG: build on FC4

Buzzz...

Thanks for playing, but no dice.

You missed the frame command. Without backing up through the stack into our code, you are listing __kernel_vsyscall. Since gdb doesn't have the sources for it, you just get the first few lines of ntop's initialization routine.

All that said and as was pointed out in another thread

(1) We don't support other people's RPMs. Just no way to know what version it is, what patches, etc.

(2) Kenneth's comment re stripping symbols may make gdb fail to show anything in frame 5 anyway.

(3) Use the source and see if it still fails.

-----Burton

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Randy Gordey
Sent: Tuesday, August 02, 2005 9:16 AM
To: [email protected]
Subject: RE: [Ntop-dev] BUG: build on FC4

First I installed the debuginfo from the rpmbuild

[EMAIL PROTECTED] i386]rpm -ihv /usr/src/redhat/RPMS/i386/ntop-debuginfo-3.1-1.2.fc4.rf.i386.rpm

So now I have

[EMAIL PROTECTED] i386]# gdb ntop

GNU gdb Red Hat Linux (6.3.0.0-1.21rh)

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 "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) set args -u root -K

Program received signal SIGABRT, Aborted.

[Switching to Thread -1208719680 (LWP 26085)]

0x00979402 in __kernel_vsyscall ()

(gdb) list

259 /* ************************************ */

260

261 /* That's the meat */

262 #ifdef WIN32

263 int ntop_main(int argc, char *argv[]) {

264 #else

265 int main(int argc, char *argv[]) {

266 #endif

267 int i, rc, userSpecified;

268 char ifStr[196] = {0};

(gdb) info stack

#0 0x00979402 in __kernel_vsyscall ()

#1 0x006e71f8 in raise () from /lib/libc.so.6

#2 0x006e8948 in abort () from /lib/libc.so.6

#3 0x0071c52a in __libc_message () from /lib/libc.so.6

#4 0x0079d565 in __chk_fail () from /lib/libc.so.6

#5 0x00e2d484 in initDevices (devices=0x0) at initialize.c:1499

#6 0x00e23e57 in initNtop (devices=0x0) at globals-core.c:599

#7 0x0804aaf5 in main (argc=4, argv=0xbfb57e84) at main.c:471

#8 0x006d3de6 in __libc_start_main () from /lib/libc.so.6

#9 0x08049c01 in _start ()

(gdb) bt full

#0 0x00979402 in __kernel_vsyscall ()