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<!-- name="Milon Firikis" -->
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<!-- subject="Re: Sane 1.01pre5 segfaults in RedHat 5.1 (net)" -->
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<title>sane-devel: Re: Sane 1.01pre5 segfaults in RedHat 5.1 (net)</title>
<h1>Re: Sane 1.01pre5 segfaults in RedHat 5.1 (net)</h1>
<b>Milon Firikis</b> (<a href="mailto:milonf@ariadne-t.gr"><i>milonf@ariadne-t.gr</i></a>)<br>
<i>Thu, 22 Apr 1999 13:25:55 +0300</i>
<p>
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Petter Reinholdtsen wrote:<br>
<i>&gt; </i><br>
<i>&gt; [Milon Firikis]</i><br>
<i>&gt; &gt; I keep getting SIGSEGVs in redhat 5.1</i><br>
<i>&gt; &gt;</i><br>
<i>&gt; &gt; I have reported it some time ago... but I am not qualified to find</i><br>
<i>&gt; &gt; the solution...</i><br>
<i>&gt; </i><br>
<i>&gt; Try running 'SANE_DEBUG_NET=128 scanimage -T' and report the output.</i><br>
<i>&gt; What is the exact command line when crashing? Try rerunning that</i><br>
<i>&gt; command line with 'SANE_DEBUG_NET=128' set.</i><br>
<i>&gt; </i><br>
<i>&gt; The pnm backend is supposed to be full of bugs. Maybe you should try</i><br>
<i>&gt; with another backend?</i><br>
<p>
Let's forget the pnm backend. I have to admit I wasn't clear enough. The<br>
offending command is scanimage -L. So I just disabled the pnm entry from<br>
the dll.conf. That means that I have only the net backend listed in<br>
there and so it should return "No available devices" or something.<br>
Instead of that I am getting...<br>
<p>
[13:19:32~(1003)]$&gt;SANE_DEBUG_NET=128 gdb scanimage<br>
GNU gdb 4.17<br>
Copyright 1998 Free Software Foundation, Inc.<br>
GDB is free software, covered by the GNU General Public License, and you<br>
are<br>
welcome to change it and/or distribute copies of it under certain<br>
conditions.<br>
Type "show copying" to see the conditions.<br>
There is absolutely no warranty for GDB. Type "show warranty" for<br>
details.<br>
This GDB was configured as "i386-redhat-linux"...<br>
(gdb) run -L<br>
Starting program: /usr/local/bin/scanimage -L<br>
[sanei_init_debug]: Setting debug level of net to 128.<br>
[net] adding backend localhost<br>
<p>
Program received signal SIGSEGV, Segmentation fault.<br>
0x40099d43 in memcpy (dstpp=0x804e328, srcpp=0x804e32c, len=4294967292)<br>
at ../sysdeps/generic/memcpy.c:57<br>
../sysdeps/generic/memcpy.c:57: No such file or directory.<br>
(gdb) up<br>
#1 0x400fd9fe in sanei_w_space (w=0x804e2e4, howmuch=4) at<br>
sanei_wire.c:84<br>
84 memcpy (w-&gt;buffer.start, w-&gt;buffer.curr, left_over);<br>
(gdb) print left_over <br>
$1 = 4294967292<br>
(gdb) print *w<br>
$2 = {version = 0, direction = WIRE_DECODE, status = 22, codec = {<br>
w_byte = 0x400fd458 &lt;bin_w_byte&gt;, w_char = 0x400fd458 &lt;bin_w_byte&gt;, <br>
w_word = 0x400fd520 &lt;bin_w_word&gt;, w_string = 0x400fd4ac<br>
&lt;bin_w_string&gt;}, <br>
buffer = {size = 8192, curr = 0x804e32c "", start = 0x804e328 "\001", <br>
end = 0x804e328 "\001"}, io = {fd = 6, read = 0x400bec60 &lt;__read&gt;, <br>
write = 0x400becb0 &lt;__write&gt;}}<br>
(gdb) info locals<br>
w = (Wire *) 0x804e2e4<br>
nbytes = 4294967292<br>
left_over = 4294967292<br>
fd = 6<br>
nread = 0<br>
nwritten = 0<br>
(gdb) <br>
<p>
Assuming I haven't configured properly the saned service in inetd.conf,<br>
scanimage shouldn't core dump, should it?<br>
<p>
MF<br>
<p>
<pre>
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</pre>
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<p>
<ul>
<!-- next="start" -->
<li> <b>Next message:</b> <a href="0293.html">John Stoffel: "Sane config thoughts"</a>
<li> <b>Previous message:</b> <a href="0291.html">Gunter Koenigsmann: "Blast Mustek?"</a>
<li> <b>Maybe in reply to:</b> <a href="0271.html">Petter Reinholdtsen: "Sane 1.01pre5 segfaults in RedHat 5.1 (net)"</a>
<!-- nextthread="start" -->
<li> <b>Next in thread:</b> <a href="0398.html">Graham Stoney: "Possible fix for Sane 1.0.1 segfault in RedHat 5.1 (net)"</a>
<!-- reply="end" -->
</ul>