Re: Segfaults when adding rules to custom chains (2.0.8-rc2)

Op wo, 26-07-2006 te 09:21 -0600, schreef Alberto Treviño:
> I am experiencing segfaults when trying to add rules to user-defined 
> chains in ebtables v2.0.8-rc2.  I saw some similar problems were fixed 
> between rc1 and rc2, but apparently some still exist.  I provide the 
> details further down.  I am using a custom-built system based on 
> DIY-Linux (www.diy-linux.org) using kernel 2.6.17.6, glibc 2.4 and GCC 
> 4.1.1 (definitely a bleeding-edge build).
> 
> Here are the details on reproducing the problem.  You create a new 
> chain, you add a rule to a default chain to jump to the new chain, then 
> you add a rule to the new chain.  Adding a new rule to the new chain 
> will segfault:

Hi,

Thanks for the report. The attached patch should solve your problem.
How to apply it: go to the source directory of ebtables, execute
'patch -p1 <file>' followed by make and make install (change <file> to
the file name of the saved patch). If you find more problems, don't
hesitate to report them...

cheers,
Bart

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--- ebtables-v2.0.8-rc2/libebtc.c.old	2006-07-28 21:58:44.000000000 +0200
+++ ebtables-v2.0.8-rc2/libebtc.c	2006-07-28 21:58:51.000000000 +0200
@@ -1033,7 +1033,7 @@ void ebt_check_for_loops(struct ebt_u_re
 			stack[sp].e = e;
 			sp++;
 			j = -1;
-			e = entries2->entries;
+			e = entries2->entries->next;
 			chain_nr = verdict + NF_BR_NUMHOOKS;
 			entries = entries2;
 			continue;