RE: [Ntop-dev] BUG: build on FC4

Burton Strauss Mon, 01 Aug 2005 14:32:20 -0700

First (idle) question - why are you running a debugging version of glibc?

Second:

(gdb) info stack

#0 0x0050f402 in __kernel_vsyscall ()

#1 0x0071a1f8 in raise () from /lib/libc.so.6

#2 0x0071b948 in abort () from /lib/libc.so.6

#3 0x0074f52a in __libc_message () from /lib/libc.so.6

#4 0x007d0565 in __chk_fail () from /lib/libc.so.6

#5 0x00f8b474 in initDevices () from /usr/lib/libntop-3.1.so

Boy, that's totally useless isn't it! Hello - gdb - give me information - hellooooo is anybody there....

OK... try this:

(gdb) frame 5

(gdb) list

hopefully, that will show WHICH line of the 211 in initDevices is causing some kind of error check in glibc to be tripped. Otherwise, you will have to add a bunch of traceEvent() calls and use that to see where it's bombing. I usually use this, added at the end of ntop.h:

#define traceEventTemp(fmt, ...) { \
if(myGlobals.runningPref.traceLevel >= CONST_DETAIL_TRACE_LEVEL) \
traceEvent(CONST_TRACE_INFO, "TEMP: " fmt, __VA_ARGS__); \
else \
traceEvent(CONST_TRACE_INFO, "TEMP: %05d " fmt, __LINE__, __VA_ARGS__); \
}

and then code

traceEventTemp("%s", "text");

Before/after every branch or even every line...

(you MUST use two parameters - the macro isn't smart enough to handle none, while the normal traceEvent() does)

-----Burton

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Randy Gordey
Sent: Monday, August 01, 2005 4:03 PM
To: [email protected]
Subject: RE: [Ntop-dev] BUG: build on FC4

[EMAIL PROTECTED] ~]# gdb ntop

GNU gdb Red Hat Linux (6.3.0.0-1.21rh)

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welcome to change it and/or distribute copies of it under certain conditions.

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This GDB was configured as "i386-redhat-linux-gnu"...(no debugging symbols found)

Using host libthread_db library "/lib/libthread_db.so.1".

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RE: [Ntop-dev] BUG: build on FC4

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