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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/4178/">https://reviewboard.asterisk.org/r/4178/</a>
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<p style="margin-top: 0;">On December 3rd, 2014, 10:48 a.m. CST, <b>Joshua Colp</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4178/diff/2/?file=69153#file69153line1089" style="color: black; font-weight: bold; text-decoration: underline;">branches/13/res/res_pjsip_outbound_publish.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int datastore_cmp(void *obj, void *arg, int flags)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">states</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="p">}</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Is it actually possible for this to happen?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">It shouldn't, but had added based upon a previous review recommendation. However with the new changes I'll this can actually be NULL, but I'll move the check a bit later and assume if it is empty it is the initial load.</pre>
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<p style="margin-top: 0;">On December 3rd, 2014, 10:48 a.m. CST, <b>Joshua Colp</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4178/diff/2/?file=69153#file69153line1221" style="color: black; font-weight: bold; text-decoration: underline;">branches/13/res/res_pjsip_outbound_publish.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int datastore_cmp(void *obj, void *arg, int flags)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">new_states</span> <span class="o">=</span> <span class="n">ao2_container_alloc</span><span class="p">(</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="n">DEFAULT_STATE_BUCKETS</span><span class="p">,</span> <span class="n">outbound_publish_state_hash</span><span class="p">,</span> <span class="n">outbound_publish_state_cmp</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">new_states</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_ERROR</span><span class="p">,</span> <span class="s">"Unable to allocate publish states container</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="k">return</span> <span class="n">AST_MODULE_LOAD_FAILURE</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="p">}</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ao2_global_obj_replace_unref</span><span class="p">(</span><span class="n">current_states</span><span class="p">,</span> <span class="n">new_states</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ao2_ref</span><span class="p">(</span><span class="n">new_states</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This is duplicating code from above. Would it not be better to assume that states may be NULL when setting it up above?
Of course I made the assumption of the global container being used like elsewhere.
If you can't do that then this can become a non-swappable regular container I'd say.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I had done this originally since on config file reloads current states were empty and it would cause a crash on lookup, but with a bit of refactoring I can remove it from here and check for it when applying an object.</pre>
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<p style="margin-top: 0;">On December 3rd, 2014, 10:48 a.m. CST, <b>Joshua Colp</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4178/diff/2/?file=69153#file69153line1268" style="color: black; font-weight: bold; text-decoration: underline;">branches/13/res/res_pjsip_outbound_publish.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ast_cond_init</span><span class="p">(</span><span class="o">&</span><span class="n">unloading</span><span class="p">.</span><span class="n">cond</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ast_mutex_lock</span><span class="p">(</span><span class="o">&</span><span class="n">unloading</span><span class="p">.</span><span class="n">lock</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">You need to be in a loop here. It's possible for this to get spuriously triggered.
As for the time limit - can things be in a state where that is safe to do?
Some logging would also be useful so people know what is going on if it waits a bit.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">What do you mean by putting it in a loop or being spuriously triggered?
Also as far as the time limit goes I think things should be fine. If it times out then the module won't unload, so anything left could still finish up. I mainly put it in so it wouldn't potentially sit there forever if a problem occurred or something took too long.</pre>
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<p>- Kevin</p>
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<p>On November 20th, 2014, 3:43 p.m. CST, Kevin Harwell wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Kevin Harwell.</div>
<p style="color: grey;"><i>Updated Nov. 20, 2014, 3:43 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-24514">ASTERISK-24514</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">When using a non-default sorcery wizard (in this instance realtime) for outbound publishes Asterisk will crash after a stack overflow occurs due to the code infinitely recursing. The fix entails removing the outbound publish state dependency from the outbound publish sorcery object and instead keeping an in memory container that can be used to lookup the state when needed.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">On top of running the current testsuite tests I also manually tested various configurations and scenarios using a static configuration file as well as dynamic realtime. Verified that the crash no longer occurs and the potentially affected functionality works as expected (for instance, module [re]loading).</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>branches/13/res/res_pjsip_outbound_publish.c <span style="color: grey">(428498)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/4178/diff/" style="margin-left: 3em;">View Diff</a></p>
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