Access not within mapped region at address

Hi, 
I am using netsnmp 5.3 on readhat enterprise 4. 
I am writting an agentx sub agent and i am getting the following back
trace using valgrind :


 
Invalid read of size 1
==26756==    at 0x52ECBF: agentx_check_packet
(in /usr/lib/libnetsnmpagent.so.10.0.0)
==26756==    by 0x6A7F76: _sess_read (in /usr/lib/libnetsnmp.so.10.0.0)
==26756==    by 0x6A909B: snmp_sess_read
(in /usr/lib/libnetsnmp.so.10.0.0)
==26756==    by 0x6A90E9: snmp_read (in /usr/lib/libnetsnmp.so.10.0.0)
==26756==  Address 0x2 is not stack'd, malloc'd or (recently) free'd
==26756== 
==26756== Process terminating with default action of signal 11
(SIGSEGV): dumping core
==26756==  Access not within mapped region at address 0x2
==26756==    at 0x52ECBF: agentx_check_packet
(in /usr/lib/libnetsnmpagent.so.10.0.0)
==26756==    by 0x6A7F76: _sess_read (in /usr/lib/libnetsnmp.so.10.0.0)
==26756==    by 0x6A909B: snmp_sess_read
(in /usr/lib/libnetsnmp.so.10.0.0)
==26756==    by 0x6A90E9: snmp_read (in /usr/lib/libnetsnmp.so.10.0.0)
==26756== 
==26756== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 51 from
2)
==26756== malloc/free: in use at exit: 288679 bytes in 8985 blocks.
==26756== malloc/free: 77164 allocs, 68179 frees, 268354569 bytes
allocated.
==26756== For counts of detected errors, rerun with: -v
==26756== searching for pointers to 8985 not-freed blocks.
==26756== checked 12785220 bytes.

GDB gives : 
#0  0x0052ecbf in agentx_check_packet ()
from /usr/lib/libnetsnmpagent.so.10
(gdb) bt
#0  0x0052ecbf in agentx_check_packet ()
from /usr/lib/libnetsnmpagent.so.10
#1  0x006a7f77 in _sess_read () from /usr/lib/libnetsnmp.so.10
#2  0x006a909c in snmp_sess_read () from /usr/lib/libnetsnmp.so.10
#3  0x006a90ea in snmp_read () from /usr/lib/libnetsnmp.so.10
#4  0x006807e4 in snmp_synch_response_cb ()
from /usr/lib/libnetsnmp.so.10
#5  0x1cb0b35b in ?? ()
#6  0x00000000 in ?? ()


I din't know if it is my bug or a netsnmp bug.
Can anyone help me please?

Thanks






-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
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