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<a href="https://github.com/libevent/libevent/commit/<a class=hub.com/libevent/libevent/commit/<a class="double-link" href="https://git"><a class=hub.com/libevent/libevent/commit/<a class="double-link" href="https://git"><a class=hub.com/libevent/libevent/commit/<a class="double-link" href="https://git"><a class=hub.com/libevent/libevent/commit/93913da1c4a528e0a832dc8dc163fa30f3e580d4">93913da1c">&lt;a href=&quot;https://github.com/libevent/libevent/commit/</a><a class="double-link" href="https://github.com/libevent/libevent/commit/&lt;a class=&quot;double-link&quot; href=&quot;https://git">&lt;a class=</a>hub.com/libevent/libevent/commit/93913da1c4a528e0a832dc8dc163fa30f3e580d4">93913da1c</a><a href="https://github.com/libevent/libevent/commit/93913da1c4a528e0a832dc8dc163fa30f3e580d4">&lt;a href=&quot;https://github.com/libevent/libevent/commit/93913da1c4a528e0a832dc8dc163fa30f3e580d4&quot;&gt;&amp;quot;&amp;gt;buffer: fix incorrect unlock of the buffer mutex (for deferred callbacks)

TSAN reports:
  WARNING: ThreadSanitizer: unlock of an unlocked mutex (or by a wrong thread) (pid=17111)
      #0 pthread_mutex_unlock /build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:3621 (libtsan.so.0+0x00000003b71c)
      #1 evbuffer_add &amp;amp;lt;null&amp;amp;gt; (libevent_core-2.2.so.1+0x00000000ddb6)
      ...

    Mutex M392 (0x7b0c00000f00) created at:
      #0 pthread_mutex_init /build/gcc/src/gcc/libsanitizer/tsan/tsan_interceptors.cc:1117 (libtsan.so.0+0x0000000291af)
      #1 &amp;amp;lt;null&amp;amp;gt; &amp;amp;lt;null&amp;amp;gt; (libevent_pthreads-2.2.so.1+0x000000000d46)
      ...

$ addr2line -e /lib/libevent_core-2.2.so.1 0x00000000ddb6
/src/libevent/buffer.c:1815 (discriminator 1)

Introduced-in: &amp;lt;/a&amp;gt;&amp;lt;a class=&amp;quot;double-link&amp;quot; href=&amp;quot;https://github.com/libevent/libevent/commit/&lt;/a&gt;&lt;a class=&quot;double-link&quot; href=&quot;https://github.com/libevent/libevent/commit/ae2</a>b84b2575be93d0aebba5c0b78453836f89f3c">ae2b84b25</a>">ae2b84b25</a><a href="https://github.com/libevent/libevent/commit/93913da1c4a528e0a832dc8dc163fa30f3e580d4"> (&quot;Replace
deferred_cbs with event_callback-based implementation.&quot;)</a>

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10865 of 13489 relevant lines covered (80.55%)

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