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<base href="https://bugzilla.netfilter.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ebtables-nft help output woes"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1723">1723</a>
</td>
</tr>
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<th>Summary</th>
<td>ebtables-nft help output woes
</td>
</tr>
<tr>
<th>Product</th>
<td>ebtables
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86_64
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P5
</td>
</tr>
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<th>Component</th>
<td>ebtables-nft
</td>
</tr>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
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<th>Reporter</th>
<td>phil@nwl.cc
</td>
</tr></table>
<p>
<div>
<pre>The list of extensions returned from 'ebtables-nft -h list_extensions' is more
than incomplete:
| # ebtables -h list_extensions
| ebtables v1.8.10 (nf_tables)
| Loaded userspace extensions:
|
| Loaded targets:
| nflog
| log
|
| Loaded matches:
Listing most extensions does not work:
| # ebtables -h 802_3
| ebtables v1.8.10 (nf_tables): Extension '802_3' not found
| Try `ebtables -h' or 'ebtables --help' for more information.
Those that work, cause double free at program exit:
| # ebtables -h nflog
| ebtables 1.8.10 (nf_tables)
| [...]
| nflog options:
| --nflog : use the default nflog parameters
| --nflog-prefix prefix : Prefix string for log message
| --nflog-group group : NETLINK group used for logging
| --nflog-range range : Number of byte to copy
| --nflog-threshold : Message threshold ofin-kernel queue
| free(): double free detected in tcache 2
| zsh: IOT instruction sudo ../../../install/sbin/ebtables -h nflog
It is caused by nft_fini() freeing 'target->t' in xtables_targets list which
apparently has been freed already by ebt_cs_clean(). Maybe the
xtables_find_target() call is bad?</pre>
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