The Opterons are 64 bit, right? So the size of u_long (typedef unsigned
long) depends on the processor. u_int32_t is a 32bit unsigned integer
across all platforms. And thus the u_int32_t change makes a lot of sense.
Similarly, the definition of u_int (idx) is also OS dependent.
unsigned short computeIdx(HostAddr *srcAddr, HostAddr *dstAddr, int sport,
int dport) {}
so there's an implicit conversion there. W/o a 64bit Operton I can't say
more, but I'd be interested in the value of idx at that point. Maybe add
some traceEvent() calls after:
idx = computeIdx(&srcHost->hostIpAddress,&dstHost->hostIpAddress, sport,
dport);
traceEvent(CONST_TRACE_INFO, "computeIdx() = %u (%x)", idx, idx);
And again at the failure point...
traceEvent(CONST_TRACE_INFO, "myGlobals.device[%d].tcpSession[%d]=",
actualDeviceId, idx);
traceEvent(CONST_TRACE_INFO, "%d",
myGlobals.device[actualDeviceId].tcpSession[idx]);
prevSession = theSession =
myGlobals.device[actualDeviceId].tcpSession[idx];
Could also be the computeIdx() routine itself:
unsigned short computeIdx(HostAddr *srcAddr, HostAddr *dstAddr, int sport,
int dport) {
unsigned short idx;
if (srcAddr->hostFamily != dstAddr->hostFamily)
return -1;
switch (srcAddr->hostFamily){
case AF_INET:
/*
* The hash key has to be calculated in a specular
* way: its value has to be the same regardless
* of the flow direction.
*
* Patch on the line below courtesy of
* Paul Chapman <[EMAIL PROTECTED]>
*/
idx =
(u_int)(dstAddr->Ip4Address.s_addr+srcAddr->Ip4Address.s_addr+sport+dport) ;
break;
#ifdef INET6
case AF_INET6:
idx = (u_int)(dstAddr->Ip6Address.s6_addr[0] +
dstAddr->Ip6Address.s6_addr[0] +
srcAddr->Ip6Address.s6_addr[0] +
srcAddr->Ip6Address.s6_addr[0] + sport +! dport);
break;
#endif
}
return idx;
}
which doesn't like the 64bit... How wide is unsigned short? You could try
replacing it with the explicit type here so it does the 'right' (expected)
truncation.
-----Burton
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of
Bret Jordan
Sent: Monday, July 26, 2004 5:29 PM
To: [EMAIL PROTECTED]
Subject: [Ntop] sflow - update
Okay I have been playing around with this some more and running ntop
through gdb and found that if I do the following I can get sflow to work
on my Opterons with a 2.6.5 kernel.
1) Edit the sflowplugin.c file and change all "u_long" references to
"u_int32_t"
2) Do NOT use a "-m" option to define local subnets .
IIf you use the -m option to define local subnets it WILL segfault.
Below you will find the output (STDOUT and a list and bt from gdb) from
the segfault.
Bret
Wed Jul 21 12:15:46 2004 SFLOW: Collector listening on port 6343
Wed Jul 21 12:15:46 2004 Creating dummy interface, 'sFlow-device'
Wed Jul 21 12:15:46 2004 THREADMGMT: sFlow thread (1092614512) started...
[New Thread 1092614512 (LWP 17049)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1092614512 (LWP 17049)]
0x0000002a958178e3 in handleSession (h=Variable "h" is not available.
) at sessions.c:637
637 prevSession = theSession =
myGlobals.device[actualDeviceId].tcpSession[idx];
(gdb) list
632
633 #ifdef CFG_MULTITHREADED
634 accessMutex(&myGlobals.tcpSessionsMutex, "handleSession");
635 #endif
636
637 prevSession = theSession =
myGlobals.device[actualDeviceId].tcpSession[idx];
638
639 while(theSession != NULL) {
640 if(theSession && (theSession->next == theSession)) {
641 traceEvent(CONST_TRACE_WARNING, "Internal Error (4)
(idx=%d)", idx);
(gdb) bt
#0 0x0000002a958178e3 in handleSession (h=Variable "h" is not available.
) at sessions.c:637
#1 0x0000002a9580e3b1 in processIpPkt (bp=Variable "bp" is not available.
) at pbuf.c:1358
#2 0x0000002a9581050f in processPacket (_deviceId=Variable "_deviceId"
is not available.
) at pbuf.c:3160
#3 0x0000002a9581298e in queuePacket (_deviceId=Variable "_deviceId" is
not available.
) at pbuf.c:2108
#4 0x0000002a98c5efd2 in receiveSflowSample (sample=Variable "sample"
is not available.
) at sflowPlugin.c:940
#5 0x0000002a98c5f112 in sFlowMainLoop (notUsed=Variable "notUsed" is
not available.
) at sflowPlugin.c:1839
#6 0x0000002a9697e8e2 in start_thread () from /lib64/tls/libpthread.so.0
#7 0x0000002a96ea84d3 in thread_start () from /lib64/tls/libc.so.6
#8 0x0000000000000000 in ?? ()
#9 0x0000000000000000 in ?? ()
#10 0x0000000000000000 in ?? ()
#11 0x0000000000000000 in ?? ()
#12 0x0000000000000000 in ?? ()
#13 0x0000000000000000 in ?? ()
#14 0x0000000000000000 in ?? ()
#15 0x0000000000000000 in ?? ()
#16 0x0000000000000000 in ?? ()
#17 0x0000000000000000 in ?? ()
#18 0x0000000000000000 in ?? ()
#19 0x0000000000000000 in ?? ()
#20 0x0000002a96ff55e0 in _nl_C_locobj () from /lib64/tls/libc.so.6
#21 0x00000000411ffdc8 in ?? ()
#22 0x0000000000000000 in ?? ()
#23 0x0000000000000000 in ?? ()
#24 0x0000000000000000 in ?? ()
#25 0x0000000000000000 in ?? ()
#26 0x0000002a9700d4a0 in __malloc_initialize_hook () from
/lib64/tls/libc.so.6
#27 0x0000000000000000 in ?? ()
#28 0x0000000000000000 in ?? ()
#29 0x0000000000000000 in ?? ()
#30 0x00000000411ff970 in ?? ()
#31 0x0000000000b39f48 in ?? ()
#32 0x00000000411ff970 in ?? ()
#33 0x0000000000000001 in ?? ()
#34 0x0000000000000000 in ?? ()
#35 0x0000000000000000 in ?? ()
#36 0x0000000000000000 in ?? ()
#37 0x0000000000000000 in ?? ()
#38 0x0000000000000000 in ?? ()
#39 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#40 0x0000000000000000 in ?? ()
#41 0x0000000000000000 in ?? ()
#42 0x0000000000000000 in ?? ()
#43 0x0000000000000000 in ?? ()
#44 0x0000000000000000 in ?? ()
#45 0x0000000000000000 in ?? ()
#46 0x0000000040fff9f0 in ?? ()
#47 0x0000002a96a861d0 in stack_cache_maxsize () from
/lib64/tls/libpthread.so.0
#48 0x00003aae00004299 in ?? ()
#49 0x0000000000000000 in ?? ()
#50 0x00000000411ff810 in ?? ()
#51 0x0000000000000000 in ?? ()
#52 0x0000000000000000 in ?? ()
#53 0x0000000000000000 in ?? ()
#54 0x0000000000000000 in ?? ()
#55 0x0000000000000000 in ?? ()
#56 0x0000000000000000 in ?? ()
#57 0x0000000000000000 in ?? ()
#58 0x0000000000000000 in ?? ()
#59 0x0000000000000000 in ?? ()
#60 0x0000000000000000 in ?? ()
#61 0x0000000000000000 in ?? ()
#62 0x0000000000000000 in ?? ()
#63 0x0000000000000000 in ?? ()
#64 0x0000000000000000 in ?? ()
#65 0x0000000000000000 in ?? ()
#66 0x0000000000000000 in ?? ()
#67 0x0000000000000000 in ?? ()
#68 0x0000000000000000 in ?? ()
#69 0x0000000000000000 in ?? ()
#70 0x0000000000000000 in ?? ()
#71 0x0000000000000000 in ?? ()
#72 0x0000000000000000 in ?? ()
#73 0x0000000000000000 in ?? ()
#74 0x0000000000000000 in ?? ()
#75 0x0000000000000000 in ?? ()
#76 0x0000000000000000 in ?? ()
#77 0x0000000000000000 in ?? ()
#78 0x0000000000000000 in ?? ()
#79 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#80 0x0000000000000000 in ?? ()
#81 0x0000000000000000 in ?? ()
#82 0x0000000000000000 in ?? ()
#83 0x0000000000000000 in ?? ()
#84 0x0000000000000000 in ?? ()
#85 0x0000000000000000 in ?? ()
#86 0x0000000000000000 in ?? ()
#87 0x0000000000000000 in ?? ()
#88 0x0000000000000000 in ?? ()
#89 0x0000000000000000 in ?? ()
#90 0x0000000000000000 in ?? ()
#91 0x0000000000000000 in ?? ()
#92 0x0000000000000000 in ?? ()
#93 0x0000000000000000 in ?? ()
#94 0x0000000000000000 in ?? ()
#95 0x0000000000000000 in ?? ()
#96 0x0000000000000000 in ?? ()
#97 0x0000000000000000 in ?? ()
#98 0x0000000000000000 in ?? ()
#99 0x0000000000000000 in ?? ()
#100 0x0000000000000000 in ?? ()
#101 0x0000000000000000 in ?? ()
#102 0x0000000000000000 in ?? ()
#103 0x0000000000000000 in ?? ()
#104 0x0000000000000000 in ?? ()
#105 0x0000000000000000 in ?? ()
#106 0x0000000000000000 in ?? ()
#107 0x0000000000000000 in ?? ()
#108 0x0000000000000000 in ?? ()
#109 0x0000000000000000 in ?? ()
#110 0x0000000000000000 in ?? ()
#111 0x0000000000000000 in ?? ()
#112 0x0000000000000000 in ?? ()
#113 0x0000000000000000 in ?? ()
#114 0x0000000000000000 in ?? ()
#115 0x0000000000000000 in ?? ()
#116 0x0000000000000000 in ?? ()
#117 0x00000000411ffa20 in ?? ()
#118 0x0000000000000000 in ?? ()
#119 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#120 0x0000000000000000 in ?? ()
#121 0x0000000000000000 in ?? ()
#122 0x0000000000000000 in ?? ()
#123 0x0000000000000000 in ?? ()
#124 0x0000000000000000 in ?? ()
#125 0x0000000000000000 in ?? ()
#126 0x0000000000000000 in ?? ()
#127 0x0000000000000000 in ?? ()
#128 0x0000000000000000 in ?? ()
#129 0x0000000000000000 in ?? ()
#130 0x0000000000000000 in ?? ()
#131 0x0000000000000000 in ?? ()
#132 0x0000000000000000 in ?? ()
#133 0x0000000000000000 in ?? ()
#134 0x0000000000000000 in ?? ()
#135 0x0000000000000000 in ?? ()
#136 0x0000000000000000 in ?? ()
#137 0x0000000000000000 in ?? ()
#138 0x0000000000000000 in ?? ()
#139 0x0000000000000000 in ?? ()
#140 0x0000000000000000 in ?? ()
#141 0x0000000000000000 in ?? ()
#142 0x0000000000000000 in ?? ()
#143 0x0000000000000000 in ?? ()
#144 0x0000000000000000 in ?? ()
#145 0x0000000000000000 in ?? ()
#146 0x0000000000000000 in ?? ()
#147 0x0000000000000000 in ?? ()
#148 0x0000000000000000 in ?? ()
#149 0x0000000000000001 in ?? ()
#150 0x0003cfc929ead38f in ?? ()
#151 0x0000000000000000 in ?? ()
#152 0x0000000000000000 in ?? ()
#153 0x0000000000000000 in ?? ()
#154 0x0000000000000000 in ?? ()
#155 0x0000002a98c5eff0 in receiveSflowSample () at sflowPlugin.c:925
#156 0x0000000000000000 in ?? ()
#157 0x0000000000000000 in ?? ()
#158 0x0000000000000000 in ?? ()
#159 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#160 0x0000000000000000 in ?? ()
#161 0x0000000000000000 in ?? ()
#162 0x0000000000000000 in ?? ()
#163 0x0000000000000000 in ?? ()
#164 0x0000000000000000 in ?? ()
#165 0x0000000000000000 in ?? ()
#166 0x0000000041000000 in ?? ()
#167 0x0000000000200000 in ?? ()
#168 0x0000000000001000 in ?? ()
#169 0x0000000000000000 in ?? ()
#170 0x0000000000000000 in ?? ()
#171 0x0000000000000000 in ?? ()
#172 0x0000000000000000 in ?? ()
#173 0x0000000000000000 in ?? ()
#174 0x0000000000000000 in ?? ()
#175 0x0000000000000000 in ?? ()
#176 0x0000000000000000 in ?? ()
#177 0x0000000000000000 in ?? ()
#178 0x0000000000000000 in ?? ()
#179 0x0000000000000000 in ?? ()
#180 0x0000000000000000 in ?? ()
#181 0x0000000000000000 in ?? ()
#182 0x0000000000000000 in ?? ()
#183 0x0000000000000000 in ?? ()
#184 0x0000000000000000 in ?? ()
#185 0x0000000000000000 in ?? ()
#186 0x0000000000000000 in ?? ()
#187 0x0000000000000000 in ?? ()
#188 0x0000000000000000 in ?? ()
#189 0x0000000000000000 in ?? ()
#190 0x0000000000000000 in ?? ()
#191 0x0000000000000000 in ?? ()
#192 0x0000000000000000 in ?? ()
#193 0x0000000000000000 in ?? ()
#194 0x0000000000000000 in ?? ()
#195 0x0000000000000000 in ?? ()
#196 0x0000000000000000 in ?? ()
#197 0x0000000000000000 in ?? ()
#198 0x0000000000000000 in ?? ()
#199 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#200 0x0000000000000000 in ?? ()
#201 0x0000000000000000 in ?? ()
#202 0x0000000000000000 in ?? ()
#203 0x0000000000000000 in ?? ()
#204 0x0000000000000000 in ?? ()
#205 0x0000000000000000 in ?? ()
#206 0x0000000000000000 in ?? ()
#207 0x0000000000000000 in ?? ()
#208 0x0000000000000000 in ?? ()
#209 0x0000000000000000 in ?? ()
#210 0x0000000000000000 in ?? ()
#211 0x0000000000000000 in ?? ()
#212 0x0000000000000000 in ?? ()
#213 0x0000000000000000 in ?? ()
#214 0x0000000000000000 in ?? ()
#215 0x0000000000000000 in ?? ()
#216 0x0000000000000000 in ?? ()
#217 0x0000000000000000 in ?? ()
#218 0x0000000000000000 in ?? ()
#219 0x0000000000000000 in ?? ()
#220 0x0000000000000000 in ?? ()
#221 0x0000000000000000 in ?? ()
#222 0x0000000000000000 in ?? ()
#223 0x0000000000000000 in ?? ()
#224 0x0000000000000000 in ?? ()
#225 0x0000000000000000 in ?? ()
#226 0x0000000000000000 in ?? ()
#227 0x0000000000000000 in ?? ()
#228 0x0000000000000000 in ?? ()
#229 0x0000000000000000 in ?? ()
#230 0x0000000000000000 in ?? ()
#231 0x0000000000000000 in ?? ()
#232 0x0000000000000000 in ?? ()
#233 0x0000000000000000 in ?? ()
#234 0x0000000000000000 in ?? ()
#235 0x0000000000000000 in ?? ()
#236 0x0000000000000000 in ?? ()
#237 0x0000000000000000 in ?? ()
#238 0x0000000000000000 in ?? ()
#239 0x0000000000000000 in ?? ()
Cannot access memory at address 0x41200000
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bret Jordan Dean's Office
Director of Networking College of Engineering
801.585.3765 University of Utah
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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