Hi,
On FreeBSD 4.1, with threads, ntop core dumps with the following patterns:
1) when displaying on web the page about one specific host:
0 0x280a2f02 in printHostEvents () at report.c:2805
#1 0x280a7bef in printHostTrafficStats () at reportUtils.c:1581
#2 0x2809adea in printAllSessionsHTML () at report.c:710
#3 0x28096642 in returnHTTPPage (pageName=0xbfa87c4d "203.159.25.52",
postLen=-1) at http.c:997
#4 0x28096ba6 in handleHTTPrequest () at http.c:1167
#5 0x280adbed in handleSingleWebConnection () at webInterface.c:531
#6 0x280ad912 in handleWebConnections () at webInterface.c:531
#7 0x285c4683 in _thread_start () from /usr/lib/libc_r.so.4
#8 0x0 in ?? ()
I added a return at the very first line of printHostEvents and it works fine.
2) when displaying the page stats>throughput (and others):
#0 0x8058acd in out_graph (GIFWIDTH=10248, GIFHEIGHT=20736,
gif_fptr=0x286531e0, type=GDC_3DBAR, num_points=9, xlbl=0xbfa8728c,
num_sets=1) at gdchart.c:261
#1 0x28093a81 in drawGlobalProtoDistribution () at graph.c:636
#2 0x280960c7 in returnHTTPPage (
pageName=0xbfa87c4d "drawGlobalProtoDistribution.gif", postLen=-1)
at http.c:904
#3 0x28096b66 in handleHTTPrequest () at http.c:1167
#4 0x280ad521 in handleSingleWebConnection () at webInterface.c:531
#5 0x280ad246 in handleWebConnections () at webInterface.c:531
#6 0x285c3683 in _thread_start () from /usr/lib/libc_r.so.4
#7 0x0 in ?? ()
note the HUGE gif size (200MB, twice my RAM), it may be the
problem. Got a singal 11, I found that problem (sig 11) before when
handling a big gif with ghostscript.
I renamed the function out_graph, created one that is empty (return 0)
and it works (but no display of course.
3) from time to time, when displkaying a page while the previous is
still loading:
#0 0x2861ae2f in sendto () from /usr/lib/libc_r.so.4
#1 0x286198ef in send () from /usr/lib/libc_r.so.4
#2 0x28094579 in sendStringLen () at http.c:236
#3 0x28094612 in sendString () at http.c:236
#4 0x28096a22 in returnHTTPnotImplemented () at http.c:1161
#5 0x28096aeb in handleHTTPrequest () at http.c:1167
#6 0x280ad521 in handleSingleWebConnection () at webInterface.c:531
#7 0x280ad246 in handleWebConnections () at webInterface.c:531
#8 0x285c3683 in _thread_start () from /usr/lib/libc_r.so.4
#9 0x0 in ?? ()
I need to look at this one.
I have never worked with threads before, if someone can give me a hint
on how to debug those, it would be fine, I tried to set break point
with gdb, but it will not allow them as it is in a separate thread.
4) eventually, stats>traffic does not display the global protocol and
global ip protocol graphs.
Olivier
