Dhinakaran created DIRMINA-1084:
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Summary: 100% CPU when using IoBuffer.shrink() method in some cases
Key: DIRMINA-1084
URL: https://issues.apache.org/jira/browse/DIRMINA-1084
Project: MINA
Issue Type: Bug
Components: SSL
Affects Versions: 2.0.7
Environment: Any
Reporter: Dhinakaran
{code:java}
"socket_c2s_ssl-thread-6" daemon prio=10 tid=0x82f5a000 nid=0x1355 runnable
[0x7d618000]
java.lang.Thread.State: RUNNABLE
at
org.apache.mina.core.buffer.AbstractIoBuffer.shrink(AbstractIoBuffer.java:317)
at
org.apache.mina.filter.ssl.SslHandler.fetchOutNetBuffer(SslHandler.java:406)
at org.apache.mina.filter.ssl.SslHandler.writeNetBuffer(SslHandler.java:642)
at org.apache.mina.filter.ssl.SslFilter.initiateClosure(SslFilter.java:665)
at org.apache.mina.filter.ssl.SslFilter.filterClose(SslFilter.java:627)
- locked <0x9f31fb80> (a org.apache.mina.filter.ssl.SslHandler)
{code}
When one tries to shrink a buffer which minimal capacity is set to 0, and set
the size to 0, it enter into an infinite loop.
Bug https://issues.apache.org/jira/browse/DIRMINA-988 has created in 2.0.8 it
was a similar bug, but the code is slightly different in 2.0.7. But the problem
is same. We should acknowledge this issue is present in 2.0.7.
This is due to this loop :
{code:java}
while (newCapacity >>> 1 >= minCapacity) {
newCapacity >>>= 1;
}
{code}
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