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Re: nmap on sparc/linux
From: Matt <matt () use net>
Date: Mon, 16 Dec 2002 15:21:22 -0800 (PST)

On Mon, 16 Dec 2002, Tom Duffy wrote:

On Mon, 2002-12-16 at 14:20, Fyodor wrote:

Thanks for all the debug info.  I have a few questions:

o Do this bus error happen at every execution, or is it an
  intermittent problem?

happens every time.

o The stack trace you sent involved a crash in the Nmap ping routine.
  Does it crash when you use -P0?  If so, please send a stack trace
  like the one you sent last time.  That can help us determine whether
  the problem is in Libpcap or the Nmap ping code.

(gdb) set args -P0 deedeed
(gdb) run
Starting program: /root/nmap-3.10ALPHA4/nmap -P0 deedeed

Starting nmap V. 3.10ALPHA4 ( www.insecure.org/nmap/ )

Program received signal SIGBUS, Bus error.
0x0003b354 in bpf_filter (pc=0xd8c18, p=0xd8490 "??????", wirelen=42,
    buflen=42) at bpf_filter.c:300

What optimization level are you compiling at? Does the problem go away
when you specify -O0 to gcc and remove any specific optimziations (like
-fomit-frame-pointer)? Are you using the latest binutils along with gcc
3.2.1?

Just some generic suggestions/questions..

--
http://www.clock.org/~matt


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