Memory corruption with Token Buckets in a custom click element

[Callen Steffensen]

Hi!

I'm creating my own element in Click and I'm wanting to use a TokenBucket. I have defined the token bucket in my header file by including the following:

#include <click/tokenbucket.hh>

I declared the Token bucket as follows:

TokenBucket tb;

As soon as these two lines are added to the element I get the following error when loading my router config:

*** Error in `click': malloc(): memory corruption: 0x0000000002651880 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7fcd4203c7e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8213e)[0x7fcd4204713e]
/lib/x86_64-linux-gnu/libc.so.6(__libc_malloc+0x54)[0x7fcd42049184]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_Znwm+0x18)[0x7fcd42725e78]
click[0x5485fa]
click[0x591bfc]
click[0x5afab7]
click[0x54d467]
click[0x470064]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fcd41fe5830]
click[0x472319]
======= Memory map: ========
00400000-00655000 r-xp 00000000 08:01 1149                               /usr/local/bin/click
00854000-00876000 r--p 00254000 08:01 1149                               /usr/local/bin/click
00876000-00877000 rw-p 00276000 08:01 1149                               /usr/local/bin/click
00877000-00878000 rw-p 00000000 00:00 0
02627000-0267a000 rw-p 00000000 00:00 0                                  [heap]

I'm using DPDK on an Ubuntu 16.04 machine. If I remove the two lines from the element, the router functions perfectly.

I would appreciate some advice on how to solve the memory allocation issue.

Thanks!

[Derrick Lyndon Pallas]

Can you please include more code than that? It isn't clear to me where you're putting the TokenBucket or how you're loading your Elements. I have some guesses, but the above is not detailed enough to help.

[Derrick Lyndon Pallas]

Additionally, you do not appear to be compiling with debugging symbols.

[Callen Steffensen]

I have fixed the issue now, I had to declare the token bucket in the code file rather than the header file.

[Tom Barbette]

This often happens when you modify a .hh and do not recompile elements.cc. "make findelem" will force it.