[jcifs] Deadlock in Java code.

[Allen, Michael B (RSCH)]

Is this "Found one Java-level deadlock" message being printed by the thread monitor dump? Is this reproducible?

> -----Original Message-----
> From:	Matthew Tippett [SMTP:matthew at casero.com]
> Sent:	Monday, December 02, 2002 11:01 AM
> To:	jcifs at lists.samba.org
> Subject:	[jcifs] Deadlock in Java code.
> 
> If a remote system goes down while a connection is active, the following
> deadlock seems to occur.  Derived by <CTRL-\> under Linux.
> 
> Regards,
> 
> Matthew
> 
> Found one Java-level deadlock:
> =============================
> "JCIFS-SmbTransport":
>    waiting to lock monitor 0x808749c (object 0x447c21a0, a 
> jcifs.smb.SmbTree),
>    which is held by "Thread-9"
> "Thread-9":
>    waiting to lock monitor 0x808814c (object 0x447ab990, a 
> jcifs.smb.SmbSession),
>    which is held by "JCIFS-SmbTransport"
> 
> Java stack information for the threads listed above:
> ===================================================
> "JCIFS-SmbTransport":
> 	at jcifs.smb.SmbTree.treeDisconnect(SmbTree.java:130)
> 	- waiting to lock <0x447c21a0> (a jcifs.smb.SmbTree)
> 	at jcifs.smb.SmbSession.logoff(SmbSession.java:121)
> 	- locked <0x447ab990> (a jcifs.smb.SmbSession)
> 	at jcifs.smb.SmbTransport.tryClose(SmbTransport.java:280)
> 	at jcifs.smb.SmbTransport.run(SmbTransport.java:403)
> 	at java.lang.Thread.run(Thread.java:536)
> "Thread-9":
> 	at jcifs.smb.SmbSession.sessionSetup(SmbSession.java:94)
> 	- waiting to lock <0x447ab990> (a jcifs.smb.SmbSession)
> 	at jcifs.smb.SmbSession.send(SmbSession.java:85)
> 	at jcifs.smb.SmbTree.treeConnect(SmbTree.java:123)
> 	- locked <0x447c21a0> (a jcifs.smb.SmbTree)
> 	at jcifs.smb.SmbFile.connect(SmbFile.java:496)
> 	at jcifs.smb.SmbFile.connect0(SmbFile.java:466)
> 	at jcifs.smb.SmbFile.queryPath(SmbFile.java:839)
> 	at jcifs.smb.SmbFile.exists(SmbFile.java:914)
> 	at
> com.casero.eden.service.cifs.CIFSProvider.exists(CIFSProvider.java:262)
> 	at 
> com.casero.abode.file.ZoneManagerThread.pollOpzone(ZoneManagerThread.jav
> a:145)
> 	at
> com.casero.abode.file.ZoneManagerThread.run(ZoneManagerThread.java:104)
> 	at java.lang.Thread.run(Thread.java:536)
> 
> Found 1 deadlock.
> 
> 
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